The URL can be used to link to this page

Home My WebLink AboutBPXA - ENDICOTTState of Alaska Alaska Oil & Gas Conservation Commission 1999 Facility Report Files File Names Gas Disposition - Frd;,~fl~~r ..,.ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Jan-99 Disposition ~ Volume MCF* 1. Sold To Fuel NGL Badami 17,021 171,844 5,256 2. Reinjected 10,661,318 3. Flared or vented less than 1 hour 439 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 10,417 5. Pilot and Purge 9,784 6. Used for lease operations Assist Fuel 23,369 884 443 7. Other TOTAL items 1-7 11,783,891 8. NGL gas equivalent produced 171,844 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby ce ify t t the foregoing is true and correct to the best of Signature .~, Title/yuvrL~ t ~ ^ Date Z, ,5" *Indicate contribution of each pool Pool Name 220100 Code Percent Official Use Only-Flaring Authorza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Authority 20 AAC 25.235. Form 10-422 Rev. 4/95 2/8/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT January-99 Unplanned Events less than or equal to 1 hour .~ DATE ' TIME rVOLUME ' iDESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATEGAUSE TOTAL 457 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE ' TIME VOLUME DESCRIPTION OF' INCIDENT & CAUSE ACTION TAKEN;TO ELIMINATE<:CAUSE Plant upset; DCS failure, high separator level 1/10/99 18:20-23:50 962 alarm, All SDI wells were shut-in 1 / 11 /99 00:00-01:50 279 Booster compressor shut-down. Restarted compressor 1 /12/99 22:20-23:50 219 Booster compressor shut-down. Restarted compressor Booster compressor shut-down. Problems 1/13/99 14;30-17:00 1,431 with NGLsystem. Restarted compressor 1/15/99 01:50-04:50 300 ---- - .___,Booster compressor down, cooler froze up. Restarted compressor ,,Propane compressor system problems, NGL 1/18/99 08:20-11:30 282 ~-°._W~.- "~"~ plant upset. Restarted propane compressor 1 /21 /99 12:00-13:50 249'- ~°-"`~°-- --•-----.~..N.~, Booster compressor shut-down. Restarted compressor 1 /27/99 13:00-16:15 744 ~- ~°~--,--- -----~---.--.._ Gas booster compressor fin fans freezing up. Restarted compressor 1 /28/99 00:00-02:30 525 w._----Booster compressor shut-down. Restarted compressor 1 /29/99 13:10-23:10 2,449 ---- --------- ------~.._. Booster compressor Ashut-down. Restarted compressor .... ~ _ - ------- MGC-A Shut-down. Lost power supply due 1 /30/99 20:30-23:50 2,51 to PLC error. ALL wells shut-in. 1 /31 /99 01:40-05:00 902 Booster compressor down, plant upset. Restarted compressor TOTAL 10,860 Planned Events Less Than or Equal 1 Hour AND Not Exceeding 5000 Mcf DATE TIME ' 'VOLUME ' iDESCRIPTION OF INCIDENT & CAUSE 'ACTION TAKENTO ELIMINATECAUSE' None TOTAL 0 Planned Events Exceeding 1 Hour OR Exceeding 5000 Mcf ~~ DATE TIME': VOLUME ' DESCRIPTION OF.:.INCIDENT & CAUSE ACTION:TAKENTO ELIMINATE CAUSE None TOTAL 0 Page 1 2/8/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT January-99 TOTAL EIDR SDN ENDICOTT Volume flared less than 1 hour 457 18 0 439 Volume flared greater than 10,860 433 10 10,417 1 hour Pilot Purge 10,199 406 9 9,784 Assist Gas 24.361 970 22 23,369 TOTAL FLARED VOLUME 45,877 1,827 41 44,009 Page 2 ALASKA OIL AND GAS CONSERVATION COL~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration {Alaska) Endicott 10450 Feb-99 Disposition Volume MCF* 1. Sold To Fuel NGL Badami 15,159 160,792 42 362 2. Reinjected 8,791,886 3. Flared or vented less than 1 hour 5,885 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 4,655 5. Pilot and Purge 8,527 6. Used for lease operations Assist Fuel 20,611 718,474 7. Other TOTAL items 1-7 9,768,351 8. NGL gas equivalent produced 160,792 9. Purchased gas 10. Transferred from: 11. Transferred to: I herebv c Signature that the foregoing is true and correct to the best of Title /~(L VDL Date *Indicate contribution of each pool Pool Name Code Percent 220100 Official Use Only-Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Authority 20 AAC 25.235. Form 10-422 Rev. 4/95 3/5/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT February-99 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME ' DESCRIPTION'OF'INCIDENT'& CAUSE `ACT10N TAKEN TO ELIMWATE CAUSE TOTAL 6,359 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE TIME VOLUME 'DESCRIPTIONIO~ INCIDENT'& CAUSE 'ACTION TAKEN'T0 ELIMINATE''CAUSE Both booster compressors shut-down on high Closed louvers, circulated hot glycol until inter- 2/1 /99 0800-1630 733 temp alarms when the inter-coolers hydrated off coolers thawed out. Booster compressor shut-down unexpectedly Finally able to restart booster compressor, -ooking 2/10/99 1750-1920 303 to cause for shut-down. MI compressor commissioning upsets. Troubleshoot and tune logic controls on MI 2/17/99 2150-2300 472 compressor Temperature control valve stuck open to flare Reseated valve. 2/21 /99 2030-0000 967 header. MI compressor commissioning upsets. Reviewed MI compressor start-up procedures. 2/23/99 1510-0000 1,403 Troubleshoot and tune logic controls Startup of MGC-B after shut-down caused Review start-up procedures. 2/24/99 0000-0110 236 unexpected process upset Process upset due to large volume slug off liquid Reviewed 3-phase instability of SDI flowline and 2/24/99 0930-1430 662 from SDI, plant shut-down. standard procedure for well operation at SDI MI compressor shut-down due to problems with Controls on 1st stage suction reprogrammed 2/28/99 2040-0000 254 1 stage suction. TOTAL 5,030 Planned Events Less Than or Equal 1 Hour AND Not Exceeding 5000 Mcf DATE' TIME ' VOLUME DESCRIPTION'OF»JNCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE '' None TOTAL 0 Planned Events Exceeding 1 Hour OR Exceeding 5000 Mcf DATE TIME VOLUME ' DESCRIPTION'OF INCIDENT & CAUSE . :ACTION TAKEN'TO Ei.1M[NATE"CAUSE None TOTAL 0 Page 1 3/5/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT February-99 TOTAL EIDR SDN ENDICOTT Volume flared less than 1 he 6,359 465 9 5,885 Volume flared greater than 5,030 368 7 4,655 1 hour Pilot Purge 9,212 673 i2 8,527 Assist Gas 22.268 1.627 30 20,611 TOTAL FLARED VOLUME 42,869 3,133 58 39,678 Page 2 ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Mar-99 Disposition Volume MCF* 1. Sold Fuel NGL To Badami 16,160 116,520 38,280 2. Reinjected 5,592,020 3. Flared or vented less than 1 hour 9,174 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 9,660 5. Pilot and Purge 9,202 6. Used for lease operations Assist Fuel 22,019 571,495 7. Other TOTAL items 1-7 6,384,530 8. NGL gas equivalent produced 116,520 9. Purchased gas 10. Transferred from: - 11. Transferred to: I hereby ce ify t at the foregoing is true and correct to th~e~~be~st~ of Signature Title ~((. J~k Date YI II 4"{ *Indicate contribution of each pool Pool Name Code Percent 220100 Official Use Only- Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Authority 20 AAC 25.235. Form 10-422 Rev. 4/95 4/6/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT March-99 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 10,168 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE TIME' VOLUME "DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE MI compressor pressure control setpoint was low Adjusted pressure control setpoint accordingly. 03/01 /99 17:10-20:50 1,375 and caused flare valve to open. Booster compressor S/D for high temp caused by Booster compressor restarted. high first stage separator pressure, assist gas on 03/01 /99 22:50-00:00 88 for opacity compliance. Booster compressor SID for high motor temp Booster compressor restarted. caused by high first stage separator pressure, 03/01 /99 11:50-13:20 81 assist as on for opacity compliance, Booster compressor S/D due to motor heating up Production cut to lower first stage separator 03/02/99 00;00-01:20 52 because of high first stage separator pressure, pressure, booster compressor restarted, MI compressor upsets, Attempts start up and Troubleshoot and tune control logic. Adequate tune control system. Assist gas on for opacity production cut, but flare response lags cuts, 03/03/99 19:20-20:40 196 compliance. MI compressor upsets, High differential pressure Troubleshoot operating procedures and tune 03/04/99 09:40-11:50 895 across seals caused shutdown. control logic, MI compressor upsets. Attempts start up and Troubleshoot operating procedures and tune tune control system, Assist gas on for opacity control logic. 03/04/99 13:50-17:00 266 compliance. Shut down for high temp. in 2nd Assist gas on for opacity compliance following Troubleshoot operating procedures and tune 03/04/99 17:20-19:00 73 S/D of MI compressor earlier in day. control logic. MI compressor start up and shut-down for high Troubleshoot operating procedures and tune differential across seals. Assist gas on for opacity control logic. 03/05/99 15;00-16;00 180 compliance. Leaking valve in MI compressor skid. Assist gas Identified and fixed leaking valve, 03/08/99 13:20-15:50 254 increased for opacity compliance. MI compressor start up and shut-down for high Troubleshoot operating procedures and tune temp in 1st stage discharge. Assist gas on for control logic. 03/08/99 10:30-12:10 194 o aci com liance, Page 1 4/6/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT March-99 Lost "A"-Main when "B"-Main was already down Shut-in all production. Diagnosed and repaired for upgrades: lost water pump and low pressure anti-surge valve, booster compressor, Root cause was anti-surge 03/09/99 02:50-05:00 4,004 valve faliure on 1st stage comp. NGL plant upset, slug of NGL not absorbed in Adjusted NGL plant. low oil level in stabilizer and sent to flare, Assist 03/11 /99 08:50-10:20 29 gas on for opacity compliance, 03/12/99 10:00-13:20 2 Assist gas on for opacity compliance, Plant stablilzed, Failed seal buffer pump caused water injection Repaired faulty seal buffer pump. Flare was pump S/D, triggering plant upset that resulted in CAUSED by sudden loss in production when booster compressor and NGL reboiler S/D. Assist water injection pump S/D. Booster compressor 03/ 14/99 08:00-09:00 107 gas on for over 1 hour for opacity compliance. and NGL reboiler could not be restarted in less MI compressor startup and leaking temperature Ceased start-up attempts when problem was valve. Additional assist gas required to maintain identified. Closed manual block valve. No 03/18/99 09:30-00:00 1,163 opacity compliance. mitigation possible with production cut. MI compressor temperature control valve Closed block valve after compressor S/D when 03/19/99 00:00-02:50 73 leakin leak was identified. Booster compressor S/D due to liquid slug into Cut production to mitigate slugging, Restart 03/21 /99 07:20-08:20 37 plant. Assist gas on for opacity, booster compressor. MI compressor start up and shut-down. Assist Troubleshoot operating procedures and tune 03/23/99 14:10-15:10 31 gas on for opacity compliance. control logic. Attempted to start up MI compressor. Troubleshoot operating procedures and tune 03/24/99 09:50-12:00 81 control logic, Temperature control valve leak by in MI Valve identifed and re-seated, Troubleshoot 03/24/99 13:10-16:30 35 compressor, o erating procedures and tune control logic. MI compressor upsets Troubleshoot operating procedures and tune 03/25/99 11:30-15:50 487 control logic. MI compressor start-up. Assist gas on for opacity Troubleshoot operating procedures and tune 03/26/99 13:10-15:50 45 compliance. control logic. Plant upset. First stage separator flare valve Cut production to eliminate flaring. Diagnosed opened and first stage compressor PSV opened and repaired control problem. 03/31 /99 19:50-21:20 958 to flare due to antisur e valve control problem TOTAL 10,706 Page 2 4/6/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT March-99 Planned Events Less T han or Equal 1 Hour AND Not Exceeding 5000 Mcf DATE TIME ' VOCUMf DESCRIPTION OF INCIDENT & CAUSE ACTION'TgKEN TO ELIMINATE CAUSE None TOTAL 0 Planned Events Exceeding 1 Hour OR Exceeding 5000 Mcf DATE TIME VOLUME ' DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE None. TOTAL 0 TOTAL' EIDR Volume flared less than 1 h 10,168 977 SDN 17 ENDICOTT 9,174 Volume flared greater than 10,706 1,029 17 9,660 1 hour Pilot Purge 10,199 980 17 9,202 Assist Gas 24.404 2.345 40 22,019 TOTAL FLARED VOLUME 55,477 5,331 91 50,055 Page 3 ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Apr-99 Disposition Volume MCF* 1. Sold Fuel NGL To Badami 15,605 114,343 55,689 2. Reinjected 5,714,277 3. Flared or vented less than 1 hour 5,332 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 4,672 5. Pilot and Purge 9,102 6. Used for lease operations Assist Fuel 21,906 624,187 7. Other TOTAL items 1-7 6,565,113 8. NGL gas equivalent produced 114,343 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby ce ify hat the f regoing is true and correct to the best of Signature Title I ~UINV~[~X Date *Indicate contribution of each pool Pool Name Code Percent 220100 Official Use Only-Flaring Authoxiza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Authority 20 AAC 25.235. ~~~~ Form 10-422 Rev . 4 / 9 5 Alaska OII ~C GaS Cons. Cotrltri}~$!o~' Anchorage 5/6/99 Page 1 BP EXPLORATION (ALASKA INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT April-99 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRIPTION OFJNCIDENT'& CAUSE ACTION TAKEN TO'ELIMINATE CAUSE TOTAL 5,567 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE. TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE' ` ACTION TAKEN TO'ELIMINATE CAUSE "A"-Main shut down unexpectedly due to ground Source of ground fault was found and repaired. fault which tripped control system. "A"-main Not expected to happen again. depressurized relatively quickly (-40-50 minutes) but assist gas was needed to maintain 04/01 /99 10:20-15:30 554 compliance with EPA opacity re ulatlons. Plant processes were in an upset condition Plant processes were stabilized and assist gas was following full field shut-down. Assist gas was used no longer needed. 04/01 /99 18:50-00:00 14 to maintain compliance with EPA opacity Start-up of MI compressor. Assist gas was used as Troubleshooting and tuning controls for necessary to avoid opacity as per EPA commissioning. Flaring necessary to pressurize 04/04/99 09:30-10;50 140 re ulations. com ressor for start-u . Assist gas was used duing plant upset condition to Plant operation was stablized and assist gas as 04/04/99 13;40-14:50 206 maintain compliance with EPA o aci turned off. MI compressor was started-up with necessary use Troubleshooting and tuning of controls for of assist gas to avoid opacity as per EPA commissioning. Flaring was necessary to 04/04/99 16:00-17:50 75 re ulations. ressurize compressor for start-up. The MI compressor was initiating plant instability Troubleshooting and tuning controls for which called for use of assist gas to avoid opacity commissioning. Plant operation was stablized as per EPA regulations. MI compressor was also when MI compressor was depressurized and assist 04/04/99 18:10-20:10 199 shut-down later in this event, as was turned off. Unstable plant processes necessitated use of Plant processes were stabilized and assist gas was assist gas to maintain compliance with EPA no longer needed. 04/05/99 14:10-17:10 33 o aci re ulatlons. Plant in upset condition resulting from ramping up Plant operations stabilized and assist gas was no production affer TAPS proration. Upset condition l onger needed. Booster compressor was re- caused booster compressor to shut down started. unexpectedly requiring assist gas for compliance 04/10/99 17:50-21:10 117 with EPA o aci re ulations. 5/6/99 Page 2 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT April-99 04/15/99 115:00-17:20 04/15/99 119:20-21:00 04/17/99 09:10-10;30 04/ 17/99 13:30-15:10 04/20/99 19:20-00:00 04/26/99 19:50-20:50 TOTAL MI compressor instability led to flaring and necessary use of assist gas to avoid opacity, as 131 per EPA re ulations. Gas lift instability initiated instability in gas production rate and resulted in compressors bogging down, 860 "B"-Main shut down unexpectedly due to high pressure trip. The high pressure resulted from plant instablity initiated by the "A"-Main shut 2,302 down for u grades on the previous evenin , The plant was unstable when bringing wells back on production following complete shut-down. Upset condition required use of assist gas to avoid 42 opacity as per EPA re ulations. MI compressor shut-down led to gas release from depressurization, but the majority of the flare event duration was due to extended use of assist gas as per EPA opacity requirements. Troubleshooting and tuning controls for commissioning. High GOR production was cut, but not quickly enough to avoid the flare. The maJority of the flare volume was flared over a span of less than 30 minutes, but depressurization of the high pressure flare header lengthened duration of the All wells were shut-in automatically. "B"-Main was restarted as soon as possible and the wells were brought back on slowly to promote plant stability. Plant operations stabilized and assist gas was no longer needed, Troubleshooting and tuning controls for commissioning. The faulty control function was identified and corrected. Assist gas was used to mitigate black flare smoke resulting from MI 250 compressor shutdown. MI compressor shut-down Jed to some gas release Troubleshooting and tuning controls for from depressurization, but the duration of the commissioning. flare event was mostly determined by extended 143 use of assist as as per EPA o achy requirements. ,066 Planned Events Less Than or Equal 1 Hour AND Not Exceedina 5000 Mcf DATE 04/03/99 22:10-22:10 VOLU 113 DESCRIPTION OF INCIDENT. & CAUSE MI compressor was shut-down voluntarily, but still depressured via flaring. .ACTION TAKEN TO ELIMINATE CAUSE Troubleshooting and tuning of controls for commissioning. Flaring was necessary to safely ressurize com ressor when shuttin down. Flaring was necessary to pressurize the compression train for start-uo. 04/ 10/99 00:30-00:30 TOTAL 101 214 "B"-Main planned start-up following upgrades 5/6/99 Page 3 BP EXPLORATION (ALASKA INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT April-99 Planned Events Exceed ing 1 Hour OR Exceeding 5000 Mcf -DATE TIME VOLUME DESCRIPTION OF INCIDENT.'& CAUSE ACTION TAKEN TO ELIMINATE CAUSE None TOTAL 0 TOTAL EIDR Volume flared less than 1 h 5,781 444 SDN 5 ENDICOTT 5,332 Volume flared greater than 5,066 390 ~ 4 4,672 1 hour Pilot Purge 9,870 759 9 9,102 Assist Gas 23.754 1.827 21 21,906 TOTAL FLARE D VOLUME 44,471 3,420 39 41,012 Re: Endicott Flare Reporting Follow-up Subject: Re: Endicott Flare Reporting Follow-up Date: Thu, 08 Apr 1999 11:54:22 -0800 From: Wendy Mahan <Wendy_Mahan@admin.state.ak.us> Organization: doa-aogcc To: "McEntyre, Scott R. (END)" <mcentysr2@BP.com> Mr. McEntyre, Hi, I still need detailed explanations of all of the flaring events for both January and February. Explanations should include descriptions, including timing, of equipment problems, employees efforts to resolve the problems and any efforts made to minimize flaring. If no efforts were made to minimize flaring, please explain why. It may be helpful to use our current gas disposition regulations, 20 AAC 25.235, as a guide. Thanks, Wendy "McEntyre, Scott R. (END)" wrote: > Wendy, > The purposes of this message are to establish electronic communications with > you and follow-up on our last discussion concerning the Endicott monthly > flare reports for January and February of this year. I apologize for the > delay, but the distractions surrounding our current plant upgrade have kept > everyone here at Endicott extremely busy. Are there any outstanding issues > we still need to resolve? My notes indicate that you had questions about > our flaring on January 10th through 31st and throughout February, but I am > unsure which, if any, have already been addressed. > Please reply when you have the opportunity. > Regards, > Scott R. McEntyre > Endicott Production Coordinator > (907) 659-6544 1 of 1 4/8/99 11:55 AM '99 05~30PM BPX ENDICOTT DEVP BP EXPLORATION April 20, 1999 Ms. Wendy Mahan Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501 6F ~XpW-at10n (Alaska) Inc. 900 ~aSt BBnSOn Boulevard P,O. Box 196612 Anchorage, Alaska 99519.6812 (90~ 561.5111 Subject: Endicott Flate vent Su lament for Janua and Februa of 1999 Dear Ms. Mahan: P.2i6 In response to your letter of February 16, 1999 the following detail-specific log has been prepared for Endicott flaring events exceeding one hour in length during January and February 1999. It is our hope that this letter will allay your Concerns and help facilitate a better understanding of our operations. As referenced in our letter to the AOGCC dated 8J16/98, an operational improvement to the Endicott volume accounting methodology went into effect in the second half of last year. It was acknowledged at the time that this change was likely increase the number of flaring incidents over one hour.. We would. also like to assure you however that it is our focus at Endicott, and for BP Arnoco world-wide, to reduce flaring volumes on an ongoing basis. In 1998, Endicott total flaring volume was reduced by 21.5% from 1997 (707.82 to 555.33 mmscf). A further 10% reduction in flare volume has been targeted for i 999 versus the 1998 figures. Endicott is currently on track to deliver the 1999 target with a reduction in first quarter flare volume of 13% over the comparable period last year in spite of considerable project work on our facilities during the period. During the early months of 1999 several large-scale facility projects have been scheduled at Endicott. These projects include gas handling expansion of the main gas compressor turbines, commissioning of a new miscible injectant plant and upgrade of the water injection pumps. During a period such as this process upsets are not uncommon nor unexpected. Nevertheless, your request for flare event explanations above and beyond the norm is entirely understandable and we hope the following meets with your satisfaction. January 1999: On January 10, 1999, 962 mscf of gas was flayed in the five hour and 30 minute time period from 18:20 to 23:50. This flare event was caused by lost control to SDI due to a Direct Control System (DCS) failure which led a high level alarm in the SDI test separator and accompanying emergency shut-down of all SDI wells. Production was cut when all SDI wells were automatically shut in for the duration of the event. Plant upsets followed the shut-in of SD1 and APR 27 '99 05~31PM BPX ENDICOTT DEVP AOGCC -Endicott Flare Event Supplement April 20, 1999 Page 2 P.3i6 added to the flare event. The root cause of the DCS failure has since been identified and corrected. A one hour and 50 minute flare event occurred on January 11, 1999, between the hours of 00:00 and 01:50, during which time 279 mscf of gas was flared. This event was caused by the unexpected shut-down of the booster compressor. When the booster compressor is down, the low pressure fuel gas is not pressurized enough to re-enter the first stage gas compressor and must be vented via flaring. Regardless of produced gas rate, the low pressure fuel gas must be supplied at a near constant pressure in order to ke®p many components of the plant in operation. for this reason, cutting production of gas is ineff®ctive in minimizing the volume or duration of a flare event caused by booster compressor shutdown. Assist gas was included in the reported total flared gas volume because it was used to avoid opacity as per EPA regulations. The flare event ended when the booster compressor was re-started. A flare event of one hour and 30 minutes between 22:20 and 23:50 on January 12, 1999, resulted in the flaring of 219 mscf of gas. This event occurred when the booster compressor shut down unexpectedly and could not be mitigated by decreasing production of gas, due to the plant necessity of stable fuel gas pressure, Associated assist gas is included in the reported total flare volume, as it was used to avoid opacity under EPA regulations. Start-up of the booster compressor ended the flare event. On January 13, 1999, a flare event occurred for two hours and 30 minutes from 14:30 to 17:00, during which time 1431 mscf of gas was flared. The causes of this flare event were an unplanned shut-down of the booster compressor and an increase in assist gas to avoid opacity during the associated NGL plant upsets. After multiple attempts, the booster compressor was re-started and the event ended. A decrease in production would not have decreased the event duration or volume flared, as the gas flared was a combination of temporarily used assist gas and low pressure fuel gas which is supplied at a steady rate and pressure, regardless of produced gas volume. For three hours from 01:50 to 04:50 on January 15, 1999, 300 mscf of gas was flared due to booster compressor fin fans freezing. A cut in production would not lessen the volume of gas flared because the flared gas was from the low pressure fuel gas line which is supplied at a nearly constant. pressure and rate regardless of produced gas rate. The flare ended when the fin fans were thawed, the booster compressor was re-started, and the low pressure fuel gas could be pressurized enough to re-enter the main gas compression train, On January 18, 1999, 525 mscf of gas was flared during the two and one-half hours from 00:00 to 02:30, This event was caused by continued down-time of the booster compressor that began the previous day. After several attempts, the booster compressor was successfully re-started, ending the flare event. Cutting production would not have lessened the severity of this event since the flared gas sources, low pressure fuel gas and associated assist gas for avoiding opacity, are independent of produced gas rates. On January 18, 1999, a flare event of three hours and ten minutes from 08:20 to 11:30 resulted in the flaring. of 292 mscf of gas due to propane compressor system difficulties and accompanying natural gas liquids (NGL) plant upsets. Upsets to the NGL process effectively cause opacity of flare smoke and mandate use of assist gas as per EPA regulations. The APR 27 '99 05~31PM BPX ENDICOTT DEVP AOGCC Endicott Flare Event Supplement April 20, 1999 Page 3 P.4i6 cause of this flare event can not be mitigated by decreasing production because the NGL processing equipment is downstream from most of the gas compression train and the effect of cutting produced gas is minimal in reducing flare volume and duration. The propane compressor system is a key component of the NGL system, but is completely independent of produced gas rates. This event ended when th® propane compressor difficulties were remedied and the NGL plant was stabilized. On January 21, 1999, a one hour and 50 minute flare event between 12:00 and 13:50 led to the release of 249 mscf of gas to the flare. An unplanned booster compressor shut-down was the cause of this event. Cutting production of gas would not result in minimizing the flare event volume or duration, because the low pressure fuel gas line was the source of the flared gas. Assist gas was also added to avoid opacity of flare smoke as per EPA regulations. The event ended when the booster compressor was re-started. From 13:00 to 16:15 (three hours and 15 minutes) on January 27, 1999, 744 mscf of gas was flared when the inter-cooler for the booster compressor froze, in turn causing the booster comer®ssors to shut-down because of inadequate cooling. During this event, the low pressure fuel gas was relieved via flaring because the low pressure fuel gas supply can not be decreased without shutting down many integral components of the plant. Associated assist gas was also added to the total flared gas volume for its use in avoiding opacity as per EPA regulations. The flare event ended when the inter-cooler was thawed and the booster compressor was re-started. During the ten hours between 13:10 and 23:10 on January 29, 2,449 mscf of gas was flared. The flare resulted from the relieving of the low pressure fuel gas system while the booster compressor was shut-down. This was an unplanned shut-down of the booster compressor. Without a booster compressor, the low pressure fuel gas system cannot enter the main gas compression trains and must be relieved via flaring. Because the low pressure fuel gas must be supplied at steady rates and pressures, a cut in production would decrease neither the duration of the event or volume flared, Assist gas also constituted a significant part of this flare volume, as it was added to avoid opacity as defined by EPA regulations. The event ended when the booster compressor was successfully re-started and the assist gas use could be decreased. A flare event occurred for three hours and 20 minutes from 23:50 on January 30 to 03:20 on January 31, during which time 2,618 mscf of gas was flared, This event was caused by de- pressurisation of the "A"-Main compression train during an emergency shut-down when power was lost due to PLC failure. The flaring of the speoified volume of gas was necessary to safely relieve the system pressure during this unplanned shut-down, All production was shut-in as a direct result, and remained shut-in for the duration of the event. The faulty PLC has since been identified and corrected. During the three hour 20 minute time period from 01:40 to Ofi:00 on January 31, 1999, 902 mscf of gas was flared. This flare event resulted from a booster compressor shut-down and other plant upsets which had carried over from the day before, January 31, 1999. The flare ended when the booster compressor was re-started and the plant was returned to stable operation. APR 27 '99 05~32PM BPX ENDICOTT DEVP AOGCC Endicott Flare Event Supplement Apri120, 1999 Page 4 P.5i6 F 1 - On February 1, 1999, 733 mscf of gas was flared during an eight hour and 30 minute period from 08:00 hours until 16:30 hours. The cause of this flare event was a combination of relieving pressure from the low pressure fuel gas supply system, and the use of assist gas to avoid opacity of flare smoke as per EPA regulations. The assist gas was necessary because both booster compressors shut-down unexpectedly with high temperatur® alarms due to formation of hydrat® plugs in the inter-cooler system. The booster compressors are necessary to compressing low pressure fuel gas and enable it to re-enter the first stage gas compressors, so when the booster compressors are down, the low pressure fuel gas line can only be relieved to the flare. Because the low pressure fuel gas is supplied independently of produced gas intake, a cut in production would have no effect in minimizing the flare event. The inter- coolers were thawed as quickly as possible and returned to service. Soon after, the booster compressor were re-started and the flare event ended. The total volume of flared gas includes assist gas used to maintain compliance with EPA opacity regulations. On February 10, 1999, 303 mscf of gas was flared during an one hour, 30 minute event from 17:50 to 19:20. This event was caused by an unplanned shut down of a booster compressor. The booster compressor shut-down because the "A"-Main gas compression train was backed down to minimum throughput for maintenance. When the "A°-Main was backed down the pressure in the first stage separator increased to a level higher than the allowed discharge pressure of the boost®r compressor, causing the shut-down. Included in the total volume of flared gas is the gas relieved from the low pressure fuel gas system and the assist gas necessary to avoid opacity, as per EPA regulations. Reduction in production accompanied the backing down of "A"-Main prior to the event. The flare event ended when the booster compressor was re-started. On February 17, 1999, 472 mscf of gas was flared from 21;50 to 23:00. This one hour and ten minute flare event was caused by MI compressor commissioning upsets. Under commissioning circumstances, flaring is necessary to pressurize the compressor for starting, and again for the compressor to safely de-pressurize when shutting down. Only high pressure fuel gas and assist gas was flared in this event, so cutting production rates would have had no effect on the volume or duration of the flare event. During the flare event, the MI compressor was running, thereby facilitating troubleshooting and tuning of the logic controls as part of the commissioning process. Assist gas used to comply with EPA opacity regulations is included in the total flare volume. On February 21, 1999, 967 mscf of gas was flared during an 2 hour and 30 minute event from 20;30 hours to 23:00. The root cause of this event was the failure of a temperature control valve on the MI compressor to close properly. Fuel gas leaked past the valve to result in the flaring event, Once the failed valve was identified, it was manually re-seated to end the flaring. A replacement valve has since been ordered and will be installed when received. Because the flared gas was fuel gas which is supplied at steady rates regardless of production rate, a production cut would not have minimized the duration of the flare or the volume of gas flared. Assist gas was also used during this event to comply with EPA opacity regulations and is included in the total flared gas volume. On February 23, 1999, we experienced an unplanned flare event beginning at 15:10 hours and continuing through midnight (duration of 13 hours, 50 minutes) during which time 1403 mscf of APR 27 '99 05~33PM BPX ENDICOTT DEVP AOGGC f=ndicott Flare Event Supplement Apri120.1999 Page 5 P.6i6 gas was flared. This event resulted when "B"-Main gas compression train went down and de- pressured to the flare. Assist gas was increased during this time in order to avoid opacity as per EPA regulations. The assist gas remained on until re-pressurizing the Main Gas Compression Train "B" during start up at 23;40 hours. The majority of this volume was flared during the de-pressurizing and re-pressurizing of the compression train, two steps necessary to safely shut down and start up of the compression train. On February 24, 1999, 236 mscf of gas was flared over the one hour and ten minutes from midnight to 01:10 hours due to process upsets caused by start-up of "B"-Main gas compressor. The total volume of flare gas includes the gas required to pressurize the compressor for start- up and the accompanying assist gas required to maintain EPA opacity regulations. The start- up procedures were reviewed in an attempt to identify opportunities to minimize the amount of flare gas needed to start the compressor in the future. No cut in production was performed as the necessary cuts were made previously when the compression train was shut down. Additional assist gas that was needed to maintain compliance with EPA opacity regulations is included in the total flared gas volume. On February 24, 1898, 662 mscf of gas was flared during the five hour period from 09:30 to 14:30 hours. This flare event was the result of the main gas compressors de-pressurizing during an unplanned complete plant shut-down. A slug of liquid formed in the SDI tie-line and triggered a high level alarm in the first stage separator which caused the shut down. All production was cut as all wells were automatically shut-in during this shutdown. The flare event ended when the plant was started-up again. The three phase instability of the tie-line and standard well procedures were reviewed. Assist gas was applied to the flare to comply with EPA opacity regulations, and is includ®d in the reported total flare volume. On February 28, 1999, 254 mscf of gas was flared during the three hour and 20 minute period from 20:40 to midnight. This event resulted from a commissioning run of the MI compressor when the machine shut down because of problems with first stage suction pressure. The controls on first stage suction were subsequently reprogrammed and tun®d to solve the observed problems. Because the gas flared by MI compressor commissioning is supplied at a steady rate and pressure that is not affected by produced gas off-take, a production cut would not have reduced the volume or duration of the flare event and thereby was not enacted. The total flared volume includes additional assist gas needed to comply with EPA opacity requirements. We hope that this information has been helpful to you. Please do not hesitate to contact me if you have questions or if we can provide additional information. Sinc efy, Norman Ingram Field Manager, ndic and Badami MAS/mas ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Endicott Disposition Operator IField(s) IMOnth/Year of Dispositi BP Exploration (Alaska) Endicott 10450 May-99 Volume MCF* 1. Sold Fuel NGL To Badami 16,323 155,175 45 170 2. Reinjected 8,087,493 3. Flared or vented less than 1 hour 3,519 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 1,605 5. Pilot and Purge 9,630 6. Used for lease operations Assist Fuel 22,407 805 945 7. Other TOTAL items 1-7 9,147,267 8. NGL gas equivalent produced 155,175 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby certify that the foregoing is true and correct to the best of ignature ~. %. Title f/Yt{D~ ~~ Date *Indicate contribution of each pool Pool Name 220100 Code Percent Official Use Only:-Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. ~--, LL. Form 10-422 Rev. 4/95 6/4/99 Page 1 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT May-99 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 3,726 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE MI compressor tripped to recycle several times Troubleshooting and tuning controls for before finally shutting down. commissioning. Plant operation was stablized when MI compressor was depressurized and assist 05/02/99 04:50-06:40 665 gas was turned off. Plant upset condition caused booster compressor Assist gas was returned to normal levels when shut-down, which necessitated increased use of plant operation was stabilized and opacity was assist gas to maintain compliance with opacity acceptable. Booster compressors were regulations. Note: booster compressors needed overhauled and operations were adjusted to help overhaul to operate at higher gas throughput (C them keep up with upgraded compressors. 05/15/99 20:00-21:00 93 to D upgrde) Assist gas was increased a very small ammount to Flare reporting computer was changed to not mitigate flare opacity, but overall purge, pilot, report assist gas to flare unless the PP&A is above and assist gas remained below limit of 1161 the 1161 mscf/d limit. 05/19/99 17:30-00:00 2 mscf/d, including this long duration release. Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA plant operation was stabilized and opacity was regulation. Opacity condition caused by plant acceptable. Booster compressors were upset. overhauled and operations were adjusted to help 05/21 /99 1 1:00-13:30 50 them keep up with upgraded compressors. Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA plant operation was stabilized and opacity was regulation. Opacity condition caused by plant acceptable. Booster compressors were upset. overhauled and operations were adjusted to help 05/22/99 14:10-16;40 7 them kee u with u railed com ressors. ~s„~ ~v 6/4/99 Page 2 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT May-99 Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA plant operation was stabilized and opacity was regulation. Opacity condition caused by plant acceptable, Booster compressors were upset, overhauled and operations were adjusted to help 05/22/99 17:00-18:30 26 them keep up with upgraded compressors. Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA plant operation was stabilized and opacity was regulation. Opacity condition caused by plant acceptable. Booster compressors were upset. overhauled and operations were adjusted to help 05/22/99 19:20-22:20 14 them keep up with upgraded compressors, Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA plant operation was stabilized and opacity was regulation. Opacity condition caused by plant acceptable. Booster compressors were upset. overhauled and operations were adjusted to help 05/23/99 1 1:20-13:00 28 them keep up with upgraded compressors. Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA' plant operation was stabilized and opacity was regulation. Opacity condition caused by plant acceptable. Booster compressors were upset, overhauled and operations were adjusted to help 05/24/99 13:10-14:10 32 them keep up with upgraded compressors, Plant upset condition and booster compressor Assist gas was returned to normal levels when overhaul necessitated increased use of assist gas plant operation was stabilized and opacity was .05/25/99 18:00-20:30 1 10 to avoid opacity as per EPA regulations. acceptable. Plant upset condition and booster compressor Assist gas was returned to normal levels when overhaul necessitated increased use of assist gas plant operation was stabilized and opacity was to avoid opacity as per EPA regulations. acceptable, Booster compressors were overhauled and operations were adjusted to help 05/25/99 22:40-00:00 86 them keep up with upgraded compressors, Increased assist gas use was necessary to Assist gas was returned to normal levels when mitigate opacity of flare exhaust, as per EPA plant operation was stabilized and opacity was 05/26/99 17:40-20:00 93 re ulation. O aci condition caused b lant acce table. 6/4/99 Page 3 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT May-99 5/29/99 4:40-06:00 94 Production slug to the first stage main production separator caused the booster compressors work harder and shut down because of high temperature. Compressors could not be started for over 1 hour (lockout), Assist gas was used for opacity compliance. Booster compressors were re-started when lock- out period was over. Assist gas was returned to normal levels. TOTAL 1,700 Planned Events Less Than or Equal 1 Hour AND Not Exceeding 5000 Mcf DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 0 Planned Events Exceeding 1 Hour OR Exceeding 5000 Mcf DATE TIME VOLUME DESCR1P710N OF INCIDENT & CAUSE None ACTION TAKEN TO ELIMINATE CAUSE TOTAL 0 TOTAL EIDR SDN ENDICOTT Volume flared less than 1 ho 3,726 204 3 3,519 Volume flared greater than 1,700 93 2 1,605 1 hour Pilot Purge 10,199 560 9 9,630 Assist Gas 23.731 1.302 22 22,407 TOTAL FLARE D VOLUME 39,356 2,159 36 37,161 { ~ r.. Kw t ~ $ .~c e ~' ~. Facility ,_ __~A1COtt ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Operator Field(s) Month/Year of Disposition BP Exploration (Alaska) Endicott 10450 Jun-99 Disposition Volume MCF* 1. Sold Fuel NGL To Badami 16,067 168,799 15 723 2. Reinjected 10,063,340 3. Flared or vented less than 1 hour 1,457 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 2,295 5. Pilot and Purge 9,461 6. Used for lease operations Assist Fuel 22,569 939 108 7. Other TOTAL items 1-7 11,238,819 8. NGL gas equivalent produced 168,799 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby ce ify tha the fore oing is true and correct to the best of Signature Title /~/~,~~(~, TJ4~ Date ~7I(~IQC *Indicate contribution of each pool Pool Name Code Percent 220100 Official Use Only-Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Form 10-422 Rev. 4/95 7/6/99 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT June-99 Page 1 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 1,520 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour TIME 06/10/99 111:30-12:50 88 DESCRIPTION OF INCIDENT & CAUSE Adjusting export rate for TAPS proration initiated slugging and plant instability which caused a booster compressor to trip off-line, thereby increasing need for opacity mitigation with additional assist gas. Plant upsets due to slugging production from SDI resulted in a booster compressor shut down, thereby increasing need for opacity mitigation with additional ACTION TAKEN TO ELIMINATE CAUSE The booster compressor was re-started as soon as possible to eliminate the need for and use of addtional assist gas. The booster compressor was re-started as soon as possible to eliminate the need for and use of addtional assist gas. 06/17/99 07:10-08:10 38 06/18/99 17:00-18:00 45 06/20/99 10:20-12:30 121 06/20/99 12:50-16:30 481 06/20/99 18:40-19:50 98 06/21/99 07:50-08:50 10 09:10-19:10 315 The MI compressor shut down on a recycle trip and safely depressurized to flare. This temporarily increased the need for assist gas to avoid opacity. Once the compressor and turbine was safely depressured, the assist gas was turned off. This event occurred during the commissioning phase of the MI Pressurization of M! compressor for start-up and tuning MI compressor was started up and tuned. The to set surge curves resulted in a significant need for booster compressor was then also re-started. Once additional assist gas to avoid flare smoke opacity (EPA operational stability returned, additional assist gas regulation). Simultaneous plant upset caused booster was no longer needed. Production cut during this compressor to go down also. event was not pertinent to minimizing flared volume. Pressurization of MI compressor for start-up and tuning MI compressor was started up and tuned. The to set surge curves resulted in a significant need for booster compressor was then also re-started. Once additional assist gas to avoid flare smoke opacity (EPA operational stability returned, additional assist gas regulation). Simultaneous plant upset caused booster was no longer needed. Production cut during this compressor to go down also. event was not pertinent to minimizing flared volume. Plant upsets due to slugging production from SDI The booster compressor was re-started as soon as resulted in a booster compressor shut down, thereby possible to eliminate the need for and use of increasing need for opacity miti ation with additional addtional assist as. Pressurization of MI compressor for start-up resulted in a Once the MI compressor was started, the additional significant need for additional assist gas to avoid flare assist gas was no longer needed and was eliminated. emission opacity (EPA regulation . The volume flared during this event was almost Once the knock out vessel was blown down, the completely addtional assist gas that was necessary for additional assist gas was not necessary and turned opacity mitigation while blowing liquids down from 1st off. The MI compressor operation was adjusted to sta a knock out vessel for MI com ressor. minimize li uid formation in this vessel. 7/6/99 Page 2 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT June-99 06/22/99 111:00-13:50 I 06/25/99 104:10-05:40 109 1,058 Performance testing of MI compressor increased the need for additional assist gas to mitigate flare emission opacity. MI compressor shut down and depressurized due to "O"-ring failure in tree cap of MI injection well 2-22. Additional assist gas was necessary to avoid flare smoke opacity as per EPA regulation. MI compressor shut down and depressurized due to "O"-ring failure in tree cap of MI injection well 2-22. Additional assist gas was necessary to avoid flare smoke opacity as per EPA regulation. 06/25/99 06:10-07:20 31 TOTAL 2,394 Planned Events Less Than or Equal 1 Hour AN D Not E DATE TIME VOLUME DESCRI TOTAL 0 Planned Events Exceeding 1 Hour OR Exceeding 5000 DATE TIME VOLUME DESCRI None ~ ~ TOTAL 0 Volume flared less than 1 he .Volume flared greater than I1 hour st Gas AL FLARED VOLUME TOTAL EIDR 1,520 ~ 62 2,394 97 9,870 401 23.543 955 37,327 1,515 ling 5000 Mcf OF INCIDENT & CAUS OF INCIDENT & CAU When the performance testing was complete, the additional assist gas was no longer needed and was returned to normal levels. The "O"-ring on well 2-22 was replaced with a new "O"-ring made of a material better suited to MI injection service. This change was applied to each well scheduled for MI injection service. Production cut not necessary due to proration. The "O"-ring in well 2-22 was replaced with a new "O"- ring made of a material better suited to MI injection service. This change was applied to each well scheduled for MI injection service. Production cut not necessary due to proration. ACTION TAKEN TO ELIMINATE CAUSE ACTION TAKEN TO ELIMINATE CAUSE SDN ENDICOTT 1 1,457 2 2,295 8 30 9,461 22,569 35,782 ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Jul-99 Disposition Volume MCF* 1. Sold Fuel NGL To Badami 16,126 153,701 69 341 2. Reinjected 10,260,833 3. Flared or vented less than 1 hour 5,730 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 4,852 5. Pilot and Purge 9,748 6. Used for lease operations Assist Fuel 23,349 996 921 7. Other TOTAL items 1-7 11,540,601 8. NGL gas equivalent produced 153,701 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby c i t t the fo egoing is true annnd correct to the best of Signature ~ Title (M,(~/~,`r]~~ Date ~Q *Indicate contribution of each pool Pool Name Code Percent 220100 Official Use Only-Flaring Au~horiza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. psi Cdt ~' f~= ~~ ~' ~i ? ? ~ a~ rly CJ ~ ~3 ::3 .. tv~ ~.~ ~. ~"°j ~ ... ~ ~•~~. _ .~, C:.Ca ~*m. p`-~" 1~~~~ ..,~r? Form 10-422 Rev. 4/95 8/6/1999 Page 1 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICC Unplanned Events less than ore ual to 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 5,996 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Inplanned Events gr DATE TIME 07/05/99 20:20-23:20 07/10/99 05:20-07:10 07/13/99 100:00-01:20 07/14/99 05:10-06:10 07/14/99 22:40-00:00 07/15/99 02:40-04:20 07/15/99 08:40-09:40 07/15/99 10:30-12:10 07/ 15/99 114:00-15:10 than 1 hour VOLUME 524 715 193 199 133 39 140 122 36 DESCRIPTION'OF INCIDENT"& CAUSE Combination of high ambient temperatures and new operating conditions with MI compressor were resulting in severe booster compressor problems. Assist gas was a Ifed as necessary to avoid o aci of flare emissions. Simultaneous shut down of the MI compressor and booster compressor necessitated safe depressurization vic florin and use of assist as to avoid o achy. The MI compressor tripped to recycle, initiating plant instability which caused the booster compressor to shut- down. Assist as was re uired to avoid opac' The MI compressor shut-down and depresurrized via the flare, Assist gas was used to avoid opacity as per EPA re ulation. Cause was an hydraulic leak in the ro one During start-up of MI compressor and NGL system, the booster compressor shut-down. Assist gas use was necessary to avoid opacit . The booster compressor shut-down during plant instability resulting from shutting-down the propane compressor to fix a leak. Assist gas was necessary to maintain compliance with EPA o acit re ulation. Due to the control system, the MI compressor was shut- down and depressurized via flaring. Assist gas was used to burn the rich MI gas without causing flare opacity, as per EPA re ulation. MI compressor was re-started after shutting down while commissioning new MI injection header to SDI. Assist gas was used to maintain compliance with opacity regulation during re-pressurization and start of the compressor. Plant instability from propane compressor repairs and MI compressor start-ups caused booster compressor to shut- down. Assist as was used as needed to avoid opacity. ACTIONTAKEN TO ELIMINATE CAUSE The operating conditions were adjusted to mitigate the high temperature problems with the booster compressor until the ambient temperature cooled. Assist gas use was eliminated as soon as ossible. The MI compressor was safely depressured via flaring, the booster compressor was re-started and assist gas use was terminated when o achy cleared. The MI compressor and injection wellset were adjusted until the recycle valve and controls could be tuned. leak was repaired and the MI compressor was returned service. Assist gas use was terminated as soon as Booster compressor was re-started when plant operations were stabiliized. Assist gas was used only as long as necessary to avoid opacity. The booster compressor was restarted as soon as possible while plant operation was stabilizing, Assist gas use was eliminated as soon as the flare emissions satisfied the Upon safely depressurizing the MI compressor, the control system was reset and the compressor was restarted. Assist gas was used no longer than necessary to maintain with several attempts the new inter-island MI injection 'er was purged and warmed up. The MI compressor aced more smoothly once the line was in service. The plant was stabilized and the booster compressor was re- started. Assist gas was only used as long as necessary to avoid mystery. 8/5/i999 Page 2 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT July-99 When MI gas was circulated through the tie line to the The MI compressor was slowly taken out of recycle as the MI SDI during comission(ng of the line, the MI compressor tie-line to SDI was warmed up and commissioned. Assist gas tripped to recycle and thereby necessitated flaring of rich use was terminated as soon as allowed by EPA opacity 07/15/99 16:00-17:10 45 MI as. Assist as was necessary for opacity compliance. re ulations. Assist gas was added to avoid opacity as per EPA Opacity was remedied in the first 50 minutes in which time regulations for 50 minutes, and then Jeff on inadvertantly the process was adjusted to eliminate cause of opacity. for the rest of the day. Operations staff were trained to turn set reminder alarm to 07/16/99 12:00-00:00 570 . turn assist as off after 50 minutes. The MI compressor shut-down and depresurrized via the The MI compressor was safely depressurized before trouble- flare. Assist gas was used to avoid opacity as per EPA shooting to find and remedy control system that caused the 07/17/99 19:20-21:00 370 re ulation. shut-down Assist gas was needed to manage opacity when booster Mi compressor operation was adjusted to increase booster compressor was frequently shutting down due to new compressor stability. Assist gas was used only when needed 07/19/99 17;50-18;50 54 operatin conditions imposed by MI compressor. to miti ate opaci , as per EPA re ulation. Assist gas was needed to manage opacity when booster MI compressor operation was adjusted to increase booster compressor was frequently shutting down due to new compressor stability. Assist gas was used only when needed 07/19/99 21:50-00:00 70 operating conditions imposed b MI compressor. to miti ate o aci , as er EPA re ulation. Booster compressor shut down when starved of gas MI compressor injection rate was lessened to reduce the during MI compressor performance testing. Assist gas was starvation of booster compressor, to facilitate it's restart. needed to avoid opacity. Assist gas was used as necessary to avoid opacity, but was 07/20/99 09:00-11:30 111 terminated as soon as ermissible. Well work on SDI initiated instability in the plant which Booster compressor was re-started when possible until well caused booster compressor to shut down and assist gas work, and associated instability, was past. Assist gas was 07/30/99 11:20-12:30 94 use to be required for opacity re ulation compliance. used onl when needed to avoid opacity. Unexpected shut-down of water injection pump required As soon as plant stability was restored, the booster rapid shut-in of wells, which initiated temporary plant compressor was restarted and the assist gas use was instability and caused the booster compressor to shut- terminated. 07/31/99 11:50-13:20 391 down. Assist as was used as necessary to avoid opaci Unexpected shut-down of water injection pump required As soon as plant stability was restored, the booster rapid shut-in of wells, which initiated temporary plant compressor was restarted and the assist gas use was instability and caused the booster compressor to shut- terminated. 07/31 /99 13:40-15:00 386 down, Assist gas was used as nedesaar to avoid o acit . TOTAL 4,192 Planned Events Less Than or Equal 1 Hour AN D Not Exceeding 5000 Mcf DATE, TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 0 8/5/1999 Page 3 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT July-99 Planned Events Exceeding 1 Hour OR Exceeding 5000 Mcf DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE The booster compressors were shut-down for cleaning in The boosters were returned to service as soon as possible an effort to make them more reliable at high ambient after washing and the assist gas use was discontinued when temperatures and operating condition with MI no longer needed. 07/10/99 13:00-15:10 885 compressor. Assist as use was the dominant source and TOTAL 885 TOTAL EIDR SDN ENDICOTT Volume flared less than 1 h 5,996 259 7 5,730 Volume flared greater than 5,077 219 6 4,852 1 hour Pilot Purge 10,199 440 11 9,748 Assist Gas 24.430 1.054 27 23,349 TOTAL FLARED VOLUME 45,702 1,972 51 43,679 ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Aug-99 Disposition ~ Volume MCF* 1. Sold Fuel NGL To Badami 14,437 146,343 125 765 2. Reinjected 9,798,859 3. Flared or vented less than 1 hour 3,231 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 6,407 5. Pilot and Purge 9,870 6. Used for lease operations Assist Fuel 23,637 994 246 7. Other TOTAL items 1-7 11,122,795 8. NGL gas equivalent produced 146,343 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby c ify t the for oing is true and correct to the best of Signature c Title +rVV~ 1~ Date 9 ~~ *Indicate contribution of each pool Pool Name Code percent 220100 Official Use Only-Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Form 10-422 Rev. 4/95 9/3/1999 Page 1 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRIPTION-0F INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 3,159 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events Greater than 1 hour DATE 08/01 /S 08/01 /S ME DESCRIPTION OF INCIDENT-& CAUSE The booster compressor shut down due to high ambient temperatures and required several attempts to restart. Assist gas was used to maintain opacity compliance. High ambient temperatures caused the booster compressor to shut down. Assist gas use was required to maintain opacity A small amount of assist gas was required to mitigate a small amount of black flare emissions, to maintain compliance with opacity regulation. The assist gas valve failed to completely seat when commanded to close. MI compressor recycle trips, shut downs, and re-starts caused some flaring for safe depressurization of the compressor, which necessitated use of assist caps to avoid flare emission opacity, as ACTION TAKEN TO ELIMINATE CAUSE The booster compressor was restarted and assist gas use was eliminated as soon as possible. Approximately 40% of the flared volume was assist gas required for opacity compliance. The booster compressor was restarted and assist gas use was eliminated as soon as possible. The majority of the assist gas usage was for the cause of avoiding flare emission opacity. When the small flow of gas was discovered, the valve was researted to eliminate undesired use of assist gas. The MI compressor control logic was diagnosed and tuned to promote more stable performance. Assist gas usage was eliminated as soon as opacity compliance was attained. The MI compressor was restarted and assist gas use was eliminated as soon as permitted by opacity regulation. Cutting gas production does not effect the amount of gas flared during MI compressor startup. The assist gas use was eliminated when it was discovered that it had been flaring unintentionally. It was immediately shut-in. MI compressor control logic was diagnosed to facilitate more stable performance. Assist gas usage was eliminated as soon as opacity compliance was restored. 573 16:00-18:20 I 233 08/03/99 101:50-03:00 08/04/99 119:00-21:40 I 31 08/04/99 22:00-00:00 226 08/04/99 05:50-12:00 21 08/05/99 00:00-01:20 68 08/05/99 10:30-14:20 485 08/07/99 08:30-20:40 2,49 The Mi compressor tripped to recycle, shut down, and was re- started. Flaring was necessary to safely depressurize the compressor during the shutdown. Assist gas use was required for A small plant upset created black flare smoke which necessitated use of assist gas to maintain compliance with opacity regulation. Upon eliminating assist gas use, the valve did not fully seal and a very small amount of assist gas continued to The MI compressor shut down and depressured safely via flaring. Assist gas use was necessary to maintain compliance with A booster compressor shut down due to ambient temperature swing and plant instability. Assist gas was used to mitigate flare opacity as per regulation, Both booster compressors shut down and required major repairs before they could be restarted. Flared gas included what is usually handled by the booster compressor and the associated assist gas as necessary to maintain opacity compliance. Production was cut to attain plant stability and the assist gas use was eliminated as soon as permitted by the opacity The booster compressor that was repaired first was re-started and the assist gas use was eliminated as soon as opacity was in compliance. Cutting back on production does not decrease the volume of gas flared when the booster 9/3/1999 Page 2 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT August-99 The booster compressor shut down due to high ambient The booster compressor was re-started and the assist gas use temperatures and required several attempts to restart. Assist gas was eliminated as soon as permissible by the opacity was used to maintain opacity compliance. regulation. Production cuts are not useful in minimizing flaring 08/09/99 08:30-09:40 171 from booster compressor downtime. MI compressor tripped to recycle, causing partial depressurization The MI compressor operation was stabilized, the cause of and necessitating usage of assist gas to maintain opacity black flare emissions was eliminated, and assist gas usage 08/11/99 14:40-16:20 92 compliance. was eliminated as soon as permitted by opacity regulation. A load shed on the main power generators caused the When electircal power was restored, the booster compressor electrically driven booster compressors to shut down. Assist gas was restarted and assist gas use was eliminated soon after. was necessary to achieve clean combustion and maintain Approximately 40% of the flared volume was assist gas 08/11/99 08:50-10:30 251 compliance with opacity regulation, required for opacity compliance. A plant upset required assist gas to be applied to the flare in The assist gas use was eliminated when it was discovered that order to maintain compliance with opacity regulation. When it had been left on longer than needed to maintain opacity the root cause of the black smoke was eliminated, the assist gas compliance, 08/12/99 05:20-12:00 540 was not turned off for the duration of the flare event. The MI compressor tripped to recycle several times and The MI compressor was safely shut-down and depressurized, eventually shut down, depressurizing safely via flaring. Each plant stability was restored, and assist gas usage was recycle trip caused instability that necessitated assist gas use to eliminated as soon as permitted by opacity regulation. 08/15/99 13:40-17:10 170 maintain o acity compliance. The MI compressor was purged, repressurized, and re-started as The MI compressor was restarted and assist gas use was per normal cold start up procedure. The purge and eliminated as soon as permitted by opacity regulation. repressurization stages created black smoke necessitated use of 08/16/99 09:00-10;10 214 assist as to maintain compliance with o acity re ulation. During a day of plant instability, a small amount of assist gas was When plant operation was stabilized, the assist gas use was used to mitigate small instances of flare emission opacity that eliminated. 08/16/99 14:20-16:30 6 would occur at erratic, intermittant times. Instability in the MI/NGL systems caused opacity of flare emissions Assist gas use was eliminated immediately following and necessitated use of assist gas to restore and maintain permission by opacity regulation. 08/16/99 21:00-22:10 33 compliance with the opacity re ulation. A plant upset required assist gas to be applied to the flare in As soon as opacity compliance permitted, the assist gas 08/17/99 11:10-12:10 38 order to maintain compliance with opacity re ulation. usage was eliminated. Assist gas use was required to maintain compliance with opacity When the control system accepted the command to regulation during a very short booster compressor shut down, but decrease use of assist gas, it was eliminated. The fault in the could not be turned off immediately when permitted; the control control system has since been identified and remedied. 08/20/99 06:50-10:40 358 system rejected the command to eliminate use of assist gas. The MI compressor tripped to recycle, initiating NGL system The MI compressor was safely and partially depressured. instability that necessitated assist gas usage to keep flare Once the need ceased to use assist gas to maintain opacity emissions in compliance with opacity regulation. compliance, however, human error led to a 1.5 hours delay 08/24/99 13:00-16:00 113 in the elimination of assist as usa e. 9/3/1999 Page 3 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT August-99 8/27/99 7:00-13:10 13 The MI compressor tripped to recycle and eventually shut down, safely depressuring to flare and causing plant instability which resulted in black smoke emission from the flare. Assist gas was required to maintain compliance with opacity regulation. The MI comprssor was re-started and the NGL system was stabilized. Assist gas use was eliminated as soon as permitted via opacity regulation. TOTAL 6,533 Planned Events Less Than or Equal 1 Hour A ND Not Exceeding 5000 Mcf DATE TIME VOLUME.. DESCRIPTION OF INCIDENT & CAUSE Flaring resultant from required emissions testing on MI compressor 08/29/99 17:00-17:30 180 turbine; Assist as use was not necessary. ACTION TAKEN TO ELIMINATE CAUSE Emissions testing was completed and stable operation resumed for the MI compressor. TOTAL 180 Planned Events Exceeding 1 Hour OR Exceeding 5000 Mcf DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE Deaerator (DA) gas was diverted from booster compressor to flare instead to experiment with operating conditions to minimize 08/10/99 08:00-10:00 87 overall flaring associated with booster compressor downtime. ACTION TAKEN TO ELIMINATE CAUSE When sufficient data was collected, the DA gas was re- routed back to the booster compressor. TOTAL 87 TOTAL. EIDR SDN ENDICOTT Volume flared less than 1 3,339 105 3 3,231 Volume flared greater tha 6,620 207 6 6,407 1 hour Pilot Purge 10,199 319 10 9,870 Assist Gas 24.423 763 23 23,637 TOTAL FLARED VOLUME 44,581 1,394 42 43,145 ALASKA OIL AND GAS CONSERVATION CONII~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Sep-99 Disposition ~ Volume MCF* 1. Sold Fuel NGL To Badami 13,537 137,233 98 161 2. Reinjected 9,739,215 3. Flared or vented less than 1 hour 4,400 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 629 5. Pilot and Purge 9,430 6. Used for lease operations Assist Fuel 22,507 933 942 7. Other TOTAL items 1-7 10,959,054 8. NGL gas equivalent produced 137,233 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby c ify at the f regoing is true and correct to the best of Signature Title I,~/~IL~~(~X Date ~0 *Indicate contribution of each pool Pool Name 220100 Code Percent Official Use Only-Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Form 10-422 Rev. 4/95 10/6/1999 Page 1 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT September-99 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 4,380 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE A sharp ambient temperature swing resulted in decreased gas Production was cut to match decreased gas handling handling capacity which necessitated flaring of process gas and capacity. The booster compressor was restarted and assist assist gas to keep visible emissions within EPA regulation. gas use was eliminated as soon as possible. 09/05/99 16:20-17:20 198 Additional as flared when the booster compressor S/D. 09/11 /99 03:10-07:00 73 Severe plant upset while ramping down production for TAPS slowdown required use of assist gas to maintain compliance with EPA opacity regulation. Once prorated production levels were achieved, plant operation smoothed out and assist gas use was eliminated as soon as it was no longer needed for opacity compliance 9/20/99 5:20-16:40 9 Severe slugging through SDI inter island tie-line caused booster compressors to bump flare; assist gas was needed to ensure the richer gas from the boosters was combusted in compliance with EPA Opacity regulation, Production was cut to mitigate slugging and eliminate flaring from the booster compressors. The assist gas use was eliminated as soon as possible, given compliance with Opactiy re ulation. 09/21 /99 06:30-07:40 45 B booster compressor shut down when slugging from SDI initiated instability in the plant. Assist gas was needed to mitigate flare opacity as per EPA regulation. A booster compressor was restarted and assist gas use was eliminated as soon as possible. 09/21 /99 20:30-21:30 210 The MI compressor was started up, requiring purge and pressurization which ncessitated flaring. Assist gas was used as necessary to maintain compliance with EPA opacity regulations. The MI compressor was started once it was purged and pressurized. Assist gas was turned off as soon as possible. 09/29/99 16:50-18:00 63 Start-up of propane compressor caused instability and the boostercompressor shut down; both operations required used of assist gas to mainain opacity compliance. Troubleshooting of the Propane compressor once it was re- started facilitated smooth operation. Booster was re-started and assist gas use was eliminated as soon as possible. TOTAL 658 Planned Events Less Than or Equal 1 Hour A ND Not Exceeding 5000 Mcf DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE Planned "A"-Main shut down for TAPS slowdown. Compressed Production was cut for slowdown. "A"-Main was re-started 09/11 /99 01:40-01:40 104 gas safely depressured via flaring. following completion of maintence work. 09/28/99 09:50-09:50 121 "Planned" shutdown MI compressor for calibration of instrumentation for performance diagnoses. Some assist gas use was necessary to maintain opacity compliance. Flared volume minimized, data gathered from the calibrated instruments to be used to improve performance of MI compressor and thereby decrease future flaring. TOTAL 225 10/6/1999 Page 2 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT September-99 Planned Events Exceeding 1 Hour OR Exceed ing 5000 Mcf DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 0 TOTAL EIDR SDN ENDICOTT Volume flared less than 1 4,605 202 3 4,400 Volume flared greater tha 658 29 0 629 1 hour Pilot Purge 9,870 434 6 9,430 Assist Gas 23.556 1.035 14 22,507 TOTAL FLARED VOLUME 38,689 1,700 23 36,966 ~~~~ ALASKA OIL AND GAS CONSERVATION CONIl~lISSION 1~OV 1~~~~~ FACILITY REPORT OF PRODUCED GAS DISPOSITION Facili ~"~`"~~' Field(s) Month/Year of Disposition ~!~at;~(~ Qt~ gt ~~r C~n~. (`0~' I - Aerator Endicott ~' BP Exploration (Alaska) Endicott 10450 Oct-99 Disposition ~ Volume MCF* 1. Sold Fuel NGL To Badami 14,263 164,267 84 078 2. Reinjected 11,702,445 3. Flared or vented less than 1 hour 3,024 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 2,561 5. Pilot and Purge 10,193 6. Used for lease operations Assist Fuel 24,138 1 092 144 7. Other TOTAL items 1-7 13,097,113 8. NGL gas equivalent produced 164,267 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby ce >f t t the foregoing is true ands-,ec~otrrect to the best of Signature Titleiit.~i~ tri!S Date ~( *Indicate contribution of each pool Pool Name 220100 Code percent Official Use Only-Flaring Authoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Form 10-422 Rev. 4/95 11/3/1999 Page 1 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT October-99 Unplanned Events less than or equal to 1 hour DATE '71ME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTIOIJ TAKEN TO ELIMINATE CAUSE TOTAL 2,252 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Unplanned Events greater than 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO`ELIMINATE CAUSE The booster compressor shut-down. Use of assist gas was The booster compressor was restarted. Use of assist gas was 10/03/99 12:00-15:00 258 minimized. minimized. The booster compressor shut-down and assist gas was used to The error was identified and the assist gas use was eliminated. maintain opacity compliance. Assist gas was inadvertantly leff on 10/06/99 11:00-18:30 65 for ap roximately 6 hours. Upsets in the NGL system resulted in the MI compressor shutting The MI compressor was re-started once the NGL system was down and needing to be restarted. Assist gas use was necessary lined out. Assist gas use was eliminated as soon as opacity 10/09/99 16:50-19:10 150 for o achy compliance. compliance would allow. Logging MI injection well 2-22 caused MI compressor upsets which The logging operation was completed and MGC-"B" was re- led to assist gas flaring for opacity compliance. Logging also started. Assist gas use was eliminated as soon as opacity was 10/11/99 10:30-14:30 1,029 caused MGC"B" to shut down at 14:00 and depressure via flaring. clear. The MI compressor shut down while commissioning the MI injection The MI compressor safely depressured via flaring until the next header to SDI. Assist gas was used as needed to mitigate opacity attempt to re-comission the SDI MI header. Assist gas use 10/26/99 11:00-12:30 189 re ulation. was eliminated as soon as possible. The MI compressor shut down while commissioning the MI injection The MI compressor safely depressured via flaring until the next header to SDI. Assist gas was used as needed to mitigate opacity attempt to re-comission the SDI MI header. Assist gas use 10/26/99 13:00-14:00 67 re ulation. was eliminated as soon as possible. The MI compressor shut down while commissioning the MI injection The MI compressor safely depressured via flaring until the next header to SDI. Assist gas was used as needed to mitigate opacity attempt to re-comission the SDI MI header. Assist gas use 10/27/99 20:50-21:50 98 re ulation. was eliminated as soon as ossible. The MI compressor shut down while commissioning the MI Injection The MI compressor safely depressured via flaring until the next header to SDI. Assist gas was used as needed to mitigate opacity attempt to re-comission the SDI MI header. Assist gas use 10/28/99 12;40-13:40 148 re ulation. was eliminated as soon as possible. "A" Booster S/D because hydrates formed in the intercooler. Assist Thelouvre control that affects booster compressor intercooler gas was used as necessary to maintain compliance with opacity temperature was identified to be broken and was fixed. The regulations. booster compressor was returned to service and assist gas use 10/31 /99 15:00-19:00 558 was eliminated. . TOTAL 2,562 11/3/1999 Page 2 BP EXPLORATION (ALASIC~,) INC. ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT October-99 Planned Events Less Than or Equal 1 Hour A ND Not Exceeding 5000 Mcf DATE TIME VOLUME bESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE MI compressor shut-down during performance testing. Assist gas Performance test data was collected and MI compressor was was used as necessary to maintain compliance with opacity re-started. Assist gas use was eliminated as soon as opacity 10/01/99 14:30-15:00 129 re ulations. re ulation was satisified. 10/02/99 08:20-08:40 209 MI compressor shut-down during performance testing. Assist gas was used as necessary to maintain compliance with opacity regulations. Performance test data was collected and MI compressor was re-started. Assist gas use was eliminated as soon as opacity re ulation was satisified. 10/02/99 21:10-21:50 160 MI compressor shut-down during performance testing. Assist gas was used as necessary to maintain compliance with opacity re ulations. Performance test data was collected and MI compressor was re-started. Assist gas use was eliminated as soon as opacity re ulation was satisified. 10/05/99 17:10-17:20 160 MI Compressor was shut-down intentionally for operator training. MI compressor was started up again. Assist gas use was eliminated when opacity compliance was re-established. 10/05/99 19:40-20:00 115 MI compressor was re-started for operator training, Operators were trained in start-up procedure of MI compressor in ho es that future flaring would be reduced. TOTAL 773 Planned Events Exceeding 1 Hour OR Exceed ing 5000 Mcf DATE.. _ _ TIME VOLUME DESCRIPTION OF INCIDENT.& CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 0 TOTAL' . EIDR SDN ENDICOTT Volume flared less than 1 3,025 0 _ 1 , 3,024 Volume flared greater tha 2,562 0 1 2,561 1 hr Pilot Purge 10,199 0 6 10,193 Assist Gas 24,151 0 13 24,138 TOTAL FLARED VOLUME 39,937 0 21 39,916 ALASKA OIL AND GAS CONSERVATION CONIl~IISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Nov-99 Disposition ~ Volume MCF* 1. Sold To Fuel NGL Badami 14,295 149,889 103 165 2. Reinjected 11,090,740 3. Flared or vented less than 1 hour 6,228 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.23.5) 3,347 5. Pilot and Purge 9,862 6. Used for lease operations Assist Fuel 23,200 1 040 684 7. Other TOTAL items 1-7 12,441,410 8. NGL gas equivalent produced 149,889 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby cer ify th t the foregoing is true and correct to Signature Title i•vVu,`~'~~( Date the best of LZ *Indicate contribution of each pool Pool Name 220100 Code Percent Official Use Only- Flaring Autnoriza 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. 5.:,. r.': =:- Form 10-422 Rev. 4/95 12/6/1999 Page 1 BP EXPLORATION (ALASKA) INC, ADMINISTRATIVE APPROVAL NO. 202.4 GAS FLARING INCIDENT REPORT - ENDICOTT November-99 Unplanned Events less than or equal to 1 hour DATE TIME VOLUME DESCRfPT10N OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE. TOTAL 6,233 Not required for unplanned events which ~ Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Un tanned Events reater than 1 hour '..DATE TIME VOLUME DESCRIPTION OFJNCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE The booster compressor shut down and could not be restarted, Assist gas The booster compressor was restarted. Assist gas use was 11 /Ol /99 13:50-15:50 226 was necessary to ensure compliance with flare emissions opacity eliminated as soon as permitted by opacity re ulation. The booster compressor shut down because hydrates had formed in the Once the intercooler was thawed out, the booster compressor intercooler, thereby inhibiting the cooling of the compressors. Assist gas was restarted, Assist gas was eliminated as imediately upon 11 /02/99 19:10-21:20 291 necessary for opacity compliance. meetin opaci compliance, An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of MI compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt. Assist gas use was eliminated as soon as permitted 11 /03/99 13:50-15:10 369 opacity. by flare emission opacity. A successful attempt at re-starting the MI compressor. Flare gas necessary As soon as the MI compressor was successfully started, the to purge and pressurize compressor during start-up sequence, Assist gas flaring was no longer necessary. Assist gas use was eliminated 11 /03/99 15:50-16:50 367 use necessary for flare emission opacity compliance. as soon as permitted by opacity regulations. An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of Ml compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt. Assist gas use was eliminated as soon as permitted 11 /04/99 09:40-10:50 116 opacity. by flare emission opacity. Difflcuftles encountered when restarting the Propane compressor resulted The propane compressor was restarted, the assist gas use was 11 /11 /99 11:50-13:40 14 in assist gas use to facilitate compliance with opacity regulation, no longer needed and was immediately eliminated. Multiple attempts were made to restart the MI compressor. Booster The flared volumes of gas that were necessary during the start- compressor shut down during the attempts and did not immediately re- up and shut-down were eliminated when the MI compressor start. Significant assist gas was used to mitigate flare opacity. was successfully started. The booster compressor was also 11 /11 /99 14:30-21:30 723 successfully restarted and assist gas use was eliminated. MI compressor start-up attempt and booster compressor downtime. Gas The booster compressor was restarted. The MI compressor was flared during MI compressor start-up procedure and as assist gas to operating parameters were adjusted slightly for a greater avoid flare opacity. chance of success on the next re-start attempt. Assist gas use 11 /14/99 09:40-12:30 103 was eliminated as soon as permitted by flare emission opacity. MI compressor start-up attempt and booster compressor downtime. Gas As soon as the MI compressor was successfully started, the was flared during MI compressor start-up procedure and as assist gas to flaring was no longer necessary, Assist gas use was eliminated 11 /14/99 15:10-16:20 81 avoid flare opacity. as soon as permitted by opacity regulations. The MI compressor tripped to recycle because of control system. Assist Refinement of the control system for the MI compressor is gas was necessary for flare opacity compliance. ongoing, Steps were taken to mitigate re-occurrence of the reason for tripping to recycle. Assist gas was used only as long 11 /15/99 12:00-13:00 101 as necessar to miti ate flare o aci N N O 6 a P O- P ,o N -6 O ~ N } ~ U ~M O N ~ M N ~ O N n CMO N 6 :p 7 o N Q N o } o U c0 O M O~ N ~ ~ p ~~ C ~ p O W O o C -- -y C9 - y >. 7 7 0 _O } o N N ~n H N p t ~ C > ~ p o~;= O -a o- ~ =y E U `'`" ~~ 9 a O C fq N N N Q N Q N N _ ti 0 " > U > C U O a 3 ~ } ~ O- N 3 E N c O O p 6 H N 3 E a d -p }- F Imo- ~a~y ~°' z z a p Q ~ ~ ~ N ~ ~ _~ _ C G. _ C H C ~ h c > o f w 3 o ~ U o~ m $ o 0 ~~ y 7 o O c W O aw _ ~ O E N~ O U p ~ ~. O N oo _ O -6 - o N 3 a z z C Q t c~ ~ 6 3 y 7 Y a Y}} a p 0 c 3 ~ N C E ° } ° 0 -vas F ~- z I - ~ z~ Z o~o ~ ~ - ca~~a N 7 7~3 -O 0 0~~ ' ~ h L ~ O ~ O ~ O V U~ D Q~ a ~ 3 3~ a Q a a Q~ t ~^ Z. ~ N M OI M o ~ ~ p ~ c'> v O -N ~ r O ~ ° Q O O N Q 3 3 CJ a Q~ c o ~~ Noa~ ~ N 7 O 3 7~ 0 N p ~ O y O ~-O t a N 0 C) O N u. 7 C O- O O~ O H ~ _ ~ 7 C y U N ° 2 -~ O ti N ~ o N O h o> ~ y O p N Z O W a ~ ~ Q ti E c Y ~ N 7 C t 0 O 0 -O C O 7~~ C a Q J ~ 0 0 - O~ O- ~ 0 6 p Q O p Q Q O O Q ~ W ~ ~ U~ OU c 6 O~ p 7 -O ~ C~ d N ~ ~, ~, ;n t C O Q z ~ ~ U "- J p a N s W N W ~Na ~ O a ¢ > - ° U ~ O ~ ° o } z m o c U ~ ~-. ¢ (~ a ~ 3 U O O J F- Q ~ z Z N t ao O N N 0 of N C U °~ C O ~ oa - O ~ p-a} p p W N W ~ U~ O O O p N O W W O~~ a ? o O N - ' D > mo ~ N o ~ ° o ~a~~ QI 2r ° J LL N _ Q ,~ O j Q C 7 ,L„ 7 0 ,~ ~ U Z U O- O N Z E Q tq ~ „ E ~ Q~ - 0 C C ~ O ~ N ~ N LL O LL p~ C O~ p 0 O -O Z' ~ W ~ w t d Z ~-- V Z~ O O j c O m c C O -~ N V W p a ^Z O > N a ~ ~ U ~ m ~ ~ - _ m ~- ~ ___ c ~ ~ U U ~ O Q C ~ Q C Q E 7 U Q Q ~ E ~ Z V.. Ln V -C N Q Q C "' p~ Q.-7 p O O p c000 O ~U Z W ° C L W L 7 p °F-3tiE Q ~ a: 0 0 0 0l o ~ w 0 7 O X W 2 W ~ r 0 M M' O d0 O 3 W y W ~ Q N d M ~ N tD c+) c~ O~ a n W ~ O ~ = ~ c0 ~ ~ M ~ ~ O O M ~ M N N V' ~ N ~ L J ~ r M 0 0 r p C > R C t f" y O d g i i O V ~o J Q N d W J Q V k W (V O Q ~ +- ~ w . r ~ J ~_ H W ~ p !- ~ ~ 0 0 0 0 Y F O F o 0 ~, ° ' o ~ J O <%i .- v ~ ~ _ ~ ui o - ~ a ~ P a a ~ 'C P ~ a ~ O N ~ O c N caOV N ~ Q ~ Q ""~ N N w 7 7 Q ~ a a > > ~ 'a Q ~ ALASKA OIL AND GAS CONSERVATION CON~lISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition Endicott BP Exploration (Alaska) Endicott 10450 Dec-99 Disposition Volume MCF* 1. Sold To Fuel NGL Badami 14,590 143,867 0 2. Reinjected 10,964,500 3. Flared or vented less than 1 hour 6,686 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 5,449 5. Pilot and Purge 10,191 6. Used for lease operations Assist Fuel 23,742 1,056,433 7. Other TOTAL items 1-7 12,225,458 8. NGL gas equivalent produced 143,867 9. Purchased gas 10. Transferred from: 11. Transferred to: I hereby certify that the foregoing is true and correct to the best of Signature e Title (~g~. Yj~~( Date ~ LOQp *Indicate contribution of each pool Pool Name Code Percent 220100 Official Use Only-Flaring Authorize 1. Safety MCF 2. Lease MCF 3. Conserv. Purpos MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of the month folowing the month of disposition. Authority 20 AAC 25.235. Form 10-422 Rev. 4/95 1/5/2000 Page 1 BP EXPLORATION (ALASKA) INC. ADMINISTRATIVE APPROVAL N0.202.4 GAS FLARING INCIDENT REPORT - ENDICOTT December-99 Unplanned Events less than ore ual to 1 hour DATE TIME i' VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION TAKEN TO ELIMINATE CAUSE TOTAL 6,691 Not required for unplanned events which Not required for unplanned events which are less than or equal to 1 hour are less than or equal to 1 hour Un tanned Events reater than 1 hour DATE TIME VOLUME DESCRIPTION OF INCIDENT & CAUSE ACTION'TAKEN TO ELIMlNATE'CAUSE An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of MI compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt, Assist gas use was eliminated as soon as permitted 12/09/99 04:50-05:50 199 opacity. by flare emission opacity. An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of MI compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt. Assist gas use was eliminated as soon as permitted 12/09/99 06:10-07:40 94 opacity. by flare emission opaci An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of MI compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt. Assist gas use was eliminated as soon as permitted 12/09/99 12:30-14:20 125 opaci by flare emission opaci An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of MI compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt, Assist gas use was eliminated as soon as permitted 12/09/99 15:10-16:10 419 opacity. by flare emission opacity. An attempt to restart the MI compressor was unsuccessful. Flare volume The MI compressor operating parameters were adjusted due to purging, pressurization, depressurization, of MI compressor. Assist slightly for a greater chance of success on the next re-start gas was used for the duration of this event to mitigate flare emission attempt. Assist gas use was eliminated as soon as permitted 12/09/99 19;40-20:50 202 o achy. by flare emission o aci DCS (Digital Control System) failure prevented the reduction of assist gas Repeated commands to reduce assist gas rate finally. to normal rates after short period of increased volume. accepted by DCS, Controls system engineer notified of 12/11 /99 11:50-22;50 313 problem with system. Main gas compressor inlet air filters plugged up with snow during blizzard Crews cleared inlet air filters and MGC's were restarted. forcing shutdown of entire field. Gas injection well back-flowed into plant 12/30/99 01:50-03:40 384 to provide fuel gas. Main gas compressor inlet air filters plugged up with snow during blizzard Crews working to clear MGC inlet air filters were unlable to forcing shutdown of entire field, Gas injection well back-flowed into plant keep up with blizzard. Waiting on weather to abate. 12/30/99 19:20-00:00 1,001 to rovide fuel gas, Main gas compressor inlet air filters plugged up with snow during blizzard Crews working to clear MGC inlet air filters were unlable to forcing shutdown of entire field. Gas injection well back-flowed into plant keep up with blizzard. Waiting on weather to abate. 12/31/99 00;00-23:59 2,116 to provide fuel gas. TOTAL 5,453 0 °o N o~ U co ~n o r i o co p N eh Z w W N UJ N U U z a'` z ~_` ~ J W J W'r ~ Q N Z Y 2 Y Fa- ~ p a' a Z ~ ~ M O I ~ p N c~ N a V U N ~ Z Z O LLl Z J ~ O O W Q z a 2 ~ L d ~ €'; o a w ~ N N O ~ Z D V V ~ V a ~ f- C7 ~ ~- "~ F- w N ~ ° w o W< m ~ J ~ U V' D Q LL to C ? Z ~ ~ O, p K ~ ~ V ~ ~ O' W a o a Z ~ ~ ~ Z ~ p A a N ~ O O O OI O L d p O X w 2 W T ~ - O Q ~- ~ M M ~ O O N O tp L ~ L p w Q CO O c0 ~t ~ o ~ M ~ U t L. ' J O 2 ? J O ~-- N C ~ O C O ~ r O 7 r ~ ~' X J C ~ ~ } N W Q w w m > ~ ; °~ ~ ~ > W W ~ a N ~ . O p p ~ c d c a ~ ` ~ t' m E a E ~ ° ~ LL ~ o C ~ n > ? a ~ Q ° - a >° >° ~ a Q ~