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Home My WebLink AboutARCO - FLOW STATION #3,. :er:~~ri~r.®°rs.~,rei.~i~i~i.~iw~~i~~.~~wisisiriri.~i~~iri~imis~r~ir~wi~r.~r~i.~i~~~i,~~.~r.®~.mr~i~i~~~imierir~sisr~rmrrr~rrrsi.®iaimiwis~rm~~~rrrimiri.~iszrimis~~w~ri~~~irr~aaw,:~i~ z~-„ ,. AGoCC ...,, 3 a~ ac.e a~r~wi.~rp~mi.®i~~~c~sr:~z®rarierr~aeiwi.~a~riss~i~~~rmi~ri~zmW~~i~~~~rie~~~~.~irirzeriwi.~i~irrwrrioia®~•ri.~:~i~~.m~~i~i®~wc®iwi.~rrr~~w~®i~ir~ri.®i~i.~~®~~..ari~ri.~c~iri.~~*. w:~iw;zsia ;a;sr.a . ~. ~~~.' ~~ u r = ~ n r: :_ ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION (Facility FLOW STATION 3 IARCOtALASKA, INC. IEASd(TERN OPERATING AREA-PBL1IMonth/Year of Dim 97 n Disposition 1. Sold 0 2. Reinjected 0 3. Flared or vented less than 1 hour 21 4. Flared or vented greater than 1 hour (Supplemental report required-See 20 AAC 25.235) 0 5. Pilot and Purge 21,316 6. Used for lease operations Fuel Assist 992,844 12 7.Other 0 TOTAL items 1 - 7 1,014,193 8. NGL gas equivalent produced 0 9. Purchased gas 0 10. Transferred from: CGF 1,014,049 11. Transferred to: CCP 48,064,829 Remarks: I hereby certify that the fo egoing is true and correct to the best of my knowledge. .-' Signature: '~,~,'~-~_~- ~,~,~,.~^,_, ~/ l ir~~v' Title: SUPERVISOR Form 10-422 (Revised 4/95) *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 Official Use Onl --Flarir- Authorization >`<1 hr. 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psis and to a temperature of 60 degrees F. Report due by the 20th of the month following the month of disposition. Authority 20 AAC 25.235. ARCO ALASKA, IWC. CONSERVATION ORDER N0.219 GAS FLARING INgDENTS FLOW STATION #3 DECEMBER 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS ~ CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN OR EGIUAL TO i HOUR 12/06/97 1940-1945 3 Repair bearing seal repair T/C 1802. PLANNED Completed normal shutdown. • 12/08/97 0830-0835 3 T/C 1802 shutdown for maintenance. PLANNED Compressor depressured. 12/08/97 1430-1435 3 T/C 1801 shutdown for maintenance. PLANNED Compressor depressured. 12/12/97 1315-1318 3 T/C 1802 shutdown for maintenance. PLANNED Compressor depressured. 12/14/97 1630-1635 3 T/C 1801 shutdown for maintenance. PLANNED Compressor depressured. 12/21/97 1300-1305 3 T/C 1802 shutdown for maintenance. PLANNED Compressor depressured. 12/21/97 1400-1405 3 T/C 1801 shutdown for maintenance. PLANNED Compressor depressured. TOTAL • 1 HOUR 21 ~LARING EVENTS GREATER THAN 1 HOUR TOTAL > 1 HOUR 0 Flared 21 PNot/Purge 21,316 C~tinuous Assist 12 TOTAL FLARED 21,349 ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION • u Facility FLOW STATION 3 Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PB Month/Year of Disposition Nov-97 Disposition *Indicate contribution of each pool to total. 1. Sold 0 Pool Name Code Percent 2. Reinjected 0 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 116 4. Flared or vented greater than 1 hour (Supplemental report required-See 20 AAC 25.235) 0 5. Pilot and Purge 19,990 6. Used for lease operations Fuel Assist 899,442 16 7.Other 0 > ;' Official Use OnI .,-Flarin Authorization > l hr. TOTAL items 1 - 7 919,564 1. Safety MCF 8. NGL gas equivalent produced 0 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CGF 919,432 Commissioner Date 11. Transferred to: CCP 42,867,390 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the fore oing is true and correct to the best of my knowledge. ~/~ Signature: ~~l ~ `"~~' Z Title: SUPERVISOR month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised 4/95) ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION •3 NOVEMBER 1997 PLANNED DATE TIME. VOLUME MCF DESCRIPTION OF INCIDENTS tk CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN 1 HOUR 11 /10/97 1300-1310 3 Shut down T/C 1801 for maintenance. PLANNED Normal shutdown. 1802 brought on Line. 11 /15/97 7205-2215 3 Shut down T/C 1802 for maintenance. PLANNED Completed depressuring. • 11 /16/97 1745-1815 104 ExcessNe inlet gas rates Into facility. UNPLANNED Reduced IMet gas rates. 11 /26/97 1655-1705 3 Shut down T/C 1801 for maintenance. PUNNED Compressor depressured. 11/28/97 1100.1110 3 1801 Startup after 1,000 hour inspection. PUNNED 1801 Compressor depressured. TOTAL UNDER i HOUR 116 FLARING EVENTS GREATER THAN 1 HOUR ~OTAL OVER 1 HOUR 0 Flared 116 Plot/Purge 19,990 Continuous Assist .16 TOTAL FLARED 20,122 FLOW STATION 3 Disposition 1. Sold 2. Reinjected . 3. Flared or vented less than 1 hour 4. Flared or vented greater than 1 hour (Supplemental report required-See 20 AAC Pilot and Purge Used for lease operafions Other TOTAL items 1 - 7 8. NGL gas equivalent produced • 9. Purchased gas 10. Transferred from: CGF 11. Transferred to: CCP ALASKA OII, AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Operator Field(s) Month/Year of Disposition ARCO ALASKA, INC. EASTERN OPERATING AREA-PB Oct-97 O ~i 2 Go ~ ~~ rte. ~ ~ o Cy •r. cp ~ 0 0 10,108 1,881 21,064 Fuel Assist 872,341 539 0 905,933 0 0 893,267 Remarks: I hereby certify that the fo egoing is true and correct to the best of my knowledge. Signature: t `,(r~~ ~ Title: 40,537,166 SUPERVISOR *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 Official Use Only--Flarin Authorization > l hr. 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psis and to a temperature of 60 degrees F. Report due by the 20th of the month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised 4/95) -~~~v~~ ARCO ALASKA, INC. tf ~ ~ ~~~~ CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS COtfltii (~!~ ~ GdS Cans a~ ~ l FLOW STATION to . 1$ t~ OCTOBER 1997 Anchorage VOLUME PLANNED/ DATE TIME MCF DESCRIPTION OF INCIDENTS 8 CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN 1 HOUR 10/03/97 1740-1745 3 Shut down T/C 1802 for makttenance PLANNED Compressor depressured. 10/09/97 0800.0803 81 ExcessNe inlet gas rates Into fadlNy. UNPLANNED Reduced inlet. gas rates. Shut in wells 6-8 . and 7-17 to reduce gas rates. 10/12/97 t e3o-2350 1,543 1804 Turbine maintenance completed. Compressor iraln PLANNED Corrected fluctuation. Calibrated faulty (Intermittent 5o min) shutdowns due to instrumentation malfundlons. Compressor instrumentation Moore card. discharge `premature" high temp. shutdown. 10/13/97 0045.0055 99 1804 start-up assist gas. PLANNED 1804 successfully brought on Nne. 10/22/97 1215-1225 87 Depressured gas line for leak repair. UNPLANNED Line depressured; repairs completed. 10/26/97 1000-1040 .8,290 Gas transN system overpressure backing FS out. UNPLANNED Cut rates and flared to reduce pressure. Flared due to CGF ESD 8 transit line overpressure. 10/31/97 1530-1730 5 Shut down T/C 102 for makttentance PLANNED Compressor depresanred. Started 1802 ( Intermittent 15 min) otter GG inspedfon. TOTAL UNDER 1 HOUR 10,108 .FLARING EVENTS GREATER THAN 1 HOUR 10/03/97 0330-0430 410 Flaring for shutdown. PLANNED Commonline deperessuring complete. 10/11/97 1800-2320 564 FaciAty maintenance. 1804 turbine'maJor" HP shari over- PLANNED Completed "inttial' HP shaft overspsed trip (Intermittent 7a min) speed trip test and cool down cranking for maintenance. test. 10/12!97 0022-0408 907 Facility maintenance. 1804 Turbine 'mar HP and LP shafts PLANNED Completed HP & IP shafts over-speed trip (Intermittent 119 min) overspeed trip tests and cool down cranking for maintenance, tests. TOTAL OVER 1 HOUR 1,881 Flared 11,989 PiloVPurge 21,064 Continuous Assist 53.4 TOTAL FLARED 33,592 ALASKA OIL AND GAS CONSERVATION COMMISSION • • FACILITY REPORT OF PRODUCED GAS DISP (Facility ( FLOW STATION 3 Operator ( ARCO ALASKA, INC. Field(s) EASTERN OF Disposition 1. Sold 0 2. Reinjected 0 3. Flared or vented less than 1 hour 2,024 4. Flared or vented greater than 1 hour (Su lemental re rt required--See 20 AAC 25.235) 6,531 5. Pilot and Purge 19,765 6. Used for lease operations Fuel Assist 865,545 108 7.Other 0 TOTAL items 1 - 7 893,973 8. NGL gas equivalent produced 0 9. Purchased gas I~s~~ ~%1 ~ '~ ~O~iS. _L'9.~1~5tgt~ 0 10. Transferred from: CGF 885,310 11. Transferred to: CCP 41,273,960 Remarks: T herehv certif~v that. th fcrreg~ing is trne an~i cxirrP,ct. to the hest cf my lrnrtwle.~lge. Signature: ~"'( Title: SUPERVISOR orm iu~c~ ~xevi OSITION Month/Year of Disposition FRAYING AREA-PBU Sep-97 *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 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 following the month of disposition. Authority 20 AAC 25.235. R ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION fKi SEPTEMBER 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS 3 CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN 1 HOUR 09/08/97 1235-1240 3 Shut down T/C 1802 for maintenance. PLANNED Started T/C 1801. 09/09/97 1350-1355 3 Shut down T/C 1801 for stand by. PLANNED Compressor depressured. • 09/12/97 1025-1050 2,018 Gas transd system overpressure backing Flow Station out. BPX "J" Pad brou ht on line UNPLANNED Reduced inlet gas rates. FS 3 cut/shut in 4 wells totalin 126 OOOM as rate g . g , g . TOTAL UNDER 1 HOUR 2, 024 FLARING EVENTS GREATER THAN 1 HOUR ,rR.~ N gNZ !5s? ~ I`~ ~ J~/STRt ;~~ ~.J~1 ~ t! I 09/03/97 1655-1845 4,965 Electrica~nstrumentation malfunction at other facility (T&D). UNPLANNED Field reduced gas rates. Gas transit system overpressure backing fbw station out. 09/30/97 0030-0410 1,566 S/D T/C # 1804 for Hot Gas Path. Cranking 1804 to cool down PLANNED Normal depressure of compressor, coolers, the gas generator for maintenance. and suction scrubber. u TOTAL OVER 1 HOUR Flared PIIoUPurg~ Continuous Asalat TOTAL FLARED 8, 531 8,558 19, 76 S ].9 28,428 ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition FLOW STATION 3 ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU Au -97 • • Disposition 1. Sold 0 2. Reinjected 0 3. Flared or vented less than 1 hour 1,832 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.23 5,543 5. Pilot and Purge 20,903 6. Used for lease operations Fuel 868,434 7.Other 0 TOTAL items 1 - 7 903,693 8. NGL gas equivalent produced ~ 0 9. Purchased gas ~ ~QG, ~~ 0 10. Transferred from: CGF ''~G+'p~~ j`~9~' 889,311 11. Transferred to: CCP r~~' 4~~ j~~ 4n 35,270,643 Remarks: I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature: Title: SUPERVISOR Form 10-422 (Revised 4/95) *lndicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 _.... _ _...... Official Use On1 --Flarin Authorization ~ 1>hr. 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Conunissioner Date Note: All volumes must be corrected to pressure of 14.65 psis and to a temperature of 60 degrees F. Report due by the 20th of the month following the month of disposition. Authority 20 AAC 25.235. ~J ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION ff3 AUGUST 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INGDENTS 8~ CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN 1 HOUR 08/01/97 2100-2225 120 1803 shutdown on high exhaust temp; 3 failed starts. UNPLANNED Restarted 1803. (Intermittent 30 min) 08/04/97 0207-0215 240 1806 instrumentation malfunction. UNPLANNED Compressor depn~sured. 08/09/97 0150-0200 80 1803 start up after maintenance. PLANNED Compressor start up complete. 08/11/97 1700-1715 1,380 High ambient temperature. UNPLANNED Reduced inlet gas rates. 08/13/97 1600-1610 3 Shut down T/C 1802 for maintenanos. 1,000 hr. inspection. PLANNED Normal shutdown. 08/14/97 1500-1510 3 Shut down T/C 1801 for maintenance. Repair combustion can PLANNED__ - Normal shutdown. retainer pin. 08/14/97 2030.2040 3 Shut down T/C 1802 for maintenance. 1,000 hr. inspection. PLANNED Normal shutdown. 08/16/97 1000-1010 3 Shut down T/C 1801 and returned to standby status. PLANNED Normal shutdown. TOTAL UNDER 1 HOUR 1,832 FLARING EVENTS GREATER THAN 1 HOUR • 08/01/97 0110-1050 4,513 Shutdown 1806 for maintenance. (Intermittent 310 min) 08/04/97 0600-0700 380 Cold cranked 1806 to prepared for start after replacing logic card. 08/08/97 0500-0800 850 Shut down T/C 1803 fa maintenance. Flaring for drillsite shutdown. TOTAL OVER 1 HOUR 5,543 Flared 7,375 Pllot/Purge 20, 903 t,'.ontirx~ous Assist 8.981 TOTAL FLARED 35, 2 S9 PLANNED Maintenance completed. UNPLANNED Restarted 1806. PLANNED Common Gne depressure complete. ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Yeaz of Disposition rLOW STATION 3 ARCO ALASKA, INC. IiASTFRN OPfsRATING ARF,A-PIIU 7u1-97 • Disposition 1. Sold 0 2. Reinjected 0 3. Flared oc vented less than 1 hour 196 4. Flared or vented Rreater than 1 hour (Su lemental re rt aired--See 20 AAC 25.235) 0 5. Pilot and Purge 20,543 6. Used for lease operations Fuel Assist 875,220 2 301 7.Other 0 TOTAL items 1- 7 898,260 8. NGL Ras equivalent produced 0 9. Purchased Ras 0 10. Transferred from: CGF 895,76.3 11. Transferred to: CCP 37,604,940 Remazks: T herehv certify that the f regoing is tn~e and correct. to the best of my knowledge. Signature: ~~~ Title: SUPI?RVISOR ornn tu~c~ ~xevise *Indicate contribution of each pool to total. Pool Name Code Percent PRiIDti01 640150 100 Official Use Onl --Flarin Authorization > 1 hr. 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Commissioner Date pressure of 14.65 Asia and to a temperature of 60 degrees F. Report due by the 20th of We month following the month of disposition. Authority 20 AAC 25.235. ARCO ALASKA, INC. CONSERVATION ORDER NO. 219 GAS FLARING INCIDENTS FLOW STATION #3 JULY 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LES$ THAN OR EQUAL TO 1 HOUR 07/01 /97 0440-0540 96 Depressure C/L 78 & 7D for maintenance. PLANNED Depressuring completed. 07/02/97 1600.1610 3 T/C 1802 shutdown for maintenance. PLANNED Compressor depressured. 07/07/97 1100-1108 88 1801 T/C unloaded due to speed control problems. UNPLANNED Started T!C 1802 & repaired equipment. • 0 3 wn for maintenance 1801 T/C h td PLANNED Started T/C 1802 07/07/97 1155-120 . s u o . 07/31/97 1015-1025 6 Shutdown 1801 for maintenance during TAPS shutdown. PLANNED Started T/C 1802. 1230-1240 TOTAL <_ 1 HOUR 1 96 FLARING EVENTS GREATER THAN 1 HOUR TOTAL > 1 HOUR 0 Flared 1 9 6 Pilot/Purge 20, 543 Continuous Assist 2.301 TOTAL FLARED 23,040 ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition FLOW STATION 3 ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU Jun-97 • Disposition 1. Sold 0 2. Reinjected 0 3. Flared or vented less than 1 hour 10,933 4. Flared or vented Qreater than 1 hour (Supplemental report required--See 20 AAC 25.235) 30,556 5. Pilot and Pure 19,730 6. Used for lease oneradons Fuel Assist 881,626 720 7.Other 0 TOTAL items 1- 7 943,565 8. NGL Qas equivalent produced 0 9. Purchased Qas 0 10. Transferred from: CGF 901,356 11. Transferred to: CCP 39,256,144 Remarks: T herehv certify that. the fore~olnP is trne an(1 correct. to the, hest. of my knowlet[ge. Signature• ~~~~ Title: SUPERVISOR orm tu~~~ ~xevtse *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 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 following the month of disposition. Authority 20 AAC 25.235. ~ ` t ` • ~ ~:~~ ~ ~ ,e^s ~,,,, ., h,~a: ~--- ,,; .. r.~, k'~ Y ~ ~ U pp~ 6~ ;°~~` vy ns ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION ff3 JUNE 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN OR EQUAL TO 1 HOUR 06/25/97 1350-1355 3 Shutdown T/C 1802 for maintenance. Normal depressure of UNPLANNED Started T/C 1801. 1802, 2000 HR inspection. 06/25/97 2200-2230 239 ElectricaVlnstrumentation malfunction. 1801 CCC antisurge UNPLANNED Corrected E 8 I fluctuatioNtailure. CCC • 06/26/97 0100-0130 287 06/26/97 0300-0305 3 06/26/97 2305-2400 9,366 06/27/97 0230-0300 677 06/29/97 1500-1508 358 TOTAL 51 HOUR 10,933 FLARING EVENTS GREATER THAN 1 HOUR 06/24/97 1630-2010 30,556 . TOTAL> 1 HOUR 30,556 Flared 41, 489 PIIo17Purgo 19,730 Continuous Asslat ]~Q TOTAL FLARED 61,939 controller controlled erratically -idled 1801 ElectricaUlnstrumentation maNunction. 1801 fuel control UNPLANNED problem caused machine to ramp down. Shutdown T/C 1802 for maintenance. Normal stop 1802. UNPLANNED Gas transit system overpressure backing Flow Station out. Over UNPLANNED Over pressure during ramp up after TAPS proration. Electrical/Instrumentation maNunction. Continued governon UNPLANNED flue) control problems. Goverrror control problems wkh 1801 compressor. UNPLANNED Shutdown T/C 1803, instrumentation malfunction. \~ `~'~ antisurge controller started functioning properly. Corrected E & I Huduation. Corrected fuel control problem. Corrected E&I fluctuation/failure. 1801 fuel control problem stabilized. Stabilized facility process and operation. Repaired equipment difficulties with 1801. Corrected governor control problems. UNPLANNED Reduced inlet gas rates. - - ARCO Alaska, Inc. • Post Office Box 100360 Anchorage, Alaska 99510-0360 Telephone 907 2761215 Keith Blackburn EOC Supervisor PRB Operations PRB-6 Phone (907) 659-5566 Fax (907) 659-5061 October 1, 1997 Wendy Mahan Natural Resource Officer Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, AK 99501-3192 RE: Flow Station 3 T/C 1803 Shutdown June 24, 1997 Dear Ms. Mahan: • RECEIVEt3 OCT - 6 i~7 ~lasia0il&Anchorage tnlSSlaR This letter is in response to your September 12, 1997 correspondence requesting more information regarding actions taken to mitigate flaring at Flow Station 3 (FS3) on June 24, 1997 during the Low Pressures System (LPS) T/C 1803 operation upset. The process upset occurred when FS3 1803 LPS Compressor tripped off-line due to failure of over temperature protection micro-processing logic card. It was reported that this upset flared 30,556 MCF and your letter referenced the flaring incident occurring from 4:30 p.m. until 8:10 p.m. From our operations logs, the FS3 Compressor was down from 4:50 p.m. through 10:40 p.m., nearly 6 hours. The FS3 Flare event occurred from 4:50 p.m. through 8:10 p.m., approximately 3 hours and 20 minutes. This is 20 minutes shorter than what was referenced in your letter (The handwritten flare report copy was hard to read and may have been interpreted as 1630 hrs. vs. 1650 hrs.) Corrective action ~n~as taken immediately to mitigate the process upset. Withi.r_ the first 40 minutes of the event, FS3 Operations attempted two restarts on the machine. The turbine nearly ramped up to full speed during the first attempt before tripping off-line. This lead the FS3 operator to focus attention toward performing a second attempt to restart the compressor since the first attempt was nearly successful. After the second attempt to restart the compressor failed, the Eastern Offtake Specialist provided FS3 a list of wells to shut-in in order to reduce gas volume at FS3 and mitigate the flare event. The well list was sent to FS3 at approximately 5:30 p.m. From this time, FS3 Operations began to shut in and pinch back wells to reduce the flare volume while FS3 Maintenance and Operation continued to work on the machine. A total of 6 wells were shut in and 9 wells were pinched back during this upset to alleviate the flare event. Also note that this upset was handled during operator personnel shift. changeout. From 5:30 p.m. to 6:15 p.m., wells 6-2, 15-47, 7-23, 6-3, 15-42, 14-2, 14-19, 15-41, and 15-28 were pinched back to minimum flow for an estimated 255 MMSCFD gas cut. From 6:15 p.m. to 8:10 p.m., wells 15-21, 15-44, 15- ARCO Alaska, Inc. is a Subsidiary of AtlanticRichfieldCompany • • Page 2 46, 7-17, 7-25, and 7-20 were shut in for an estimated 45 MMSCFD gas cut. The attached production graphs show how FS3 oil rate and field gas rate were cut during the upset event. As these low pressure wells are cut back from the system, the dynamics of the system causes the pressure in the inlet vessels handling the low pressure production well to decrease. The decrease in pressure will in turn cause a momentary surge in production from the wells left on-line. This can make it difficult to realize the effects of the corrective action taken to alleviate the FS3 flare incident. However, as these wells were shut in/pinched back and the dynamics of the system stabilized, flared gas volume decreased. The Flow Station 3 flare event ended at 8:10 p.m. Flow Station 3 Maintenance continued to troubleshoot and work on the machine until 10:30 p.m. when personnel replaced the over temperature micro-processing card which was found to be the cause of the shutdown. The compressor was returned back to normal operation at 10:40 p.m. The wells that were previously shut in and pinched back were brought back to normal service shortly thereafter. I hope this letter provides you with additional information you need regarding the June 24, 1997 FS3 LPS compressor upset and the actions taken to mitigate the associated flare event. Sincerely, ~~~~t~~ Keith L. Blackburn EOC Supervisor Attachments cc: Steve Massey/Frank Roach Marty Lemon ARCO Alaska, Inc. is a Subsidiary of AtlanticRichfieldCompany MBBL a~ m ~ ~ ~ ~ Q Q ~ 0 ~ ~ Q 100 200 300 400 500 600 700 800 900 1000 1100 ~ 1200 3 m 1300 1400 1500 1600 1700. 1800 1900 2000 2100 2200 2300 0 r O D ~_ O z O r T TI TI W N (~ ~ ~ ~ r r r T 0 • MBBL v 100 200 300 400 500 600 700 800 900 1000 1100 ~ 1200 m 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 0 O N ~ ~ 000 O N ~P O O O O O O O O • • 2 '~ m v O a z v a O D r 0 D 000 O N0P ~ 000 O N O O O O O O O O MMSCF ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION L J FLOW STATION 3 INC. OPERATING Month/Year of Disposition Disposition 1. Sold 0 2. Reinjected 0 3. Flared or vented less than 1 hour 252 4. Flared or vented Qreater than 1 hour (Sup lemental report required--See 20 AAC 25.235) 0 5. Pilot and Purge 19,443 6. Used for lease operations Fuel Assist 908,953 2 387 7.Other 0 TOTAL items 1 - 7 931,035 8. NGL tas equivalent produced 0 9. Purchased Ras 0 10. Transferred from: CGF 928,396 11. Transferred to: CCP 38,683,223 Remarks: T berehv certify that. th , fciregmng is rrn , and cnrrP,ct. to the, hPCt. of my kn~wle~ige. ~~ G~~ ~ Signature: ~-~'( ~eti,c~y.-- Title: SUPERVISOR orm evise *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 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 following the month of disposition. Authority 20 AAC 25.235. DATE TIME VOLUME MCF FLARING EVENTS LESS THAN OR EQUAL TO 1 HOUR 05/03/97 1410-1705 9 (Intermittent 25 min) 05!06/97 1430-1435 3 • 05/23/97 1 t 05-11 t 5 240 TOTAL <_ 1 HOUR 252 FLARING EVENTS GREATER THAN 1 HOUR • ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION #3 MAY 1997 PLANNED DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED T/C 1802 shutdown for maintenance; 3 failed attempts to PLANNED start 1801 and a normal shutdown of 1802 after start on 1801. T/C 1801 shutdown for maintenance. PLANNED T/C 1806 shutdown due to instrumentation malfunction. UNPLANNED TOTAL > 1 HOUR 0 Flared 2 5 2 Pilot/Purge 19,443 Continuous Assist 2.387 t Imo' . TOTAL FLARED 22,082 ,.-` ~' ..~ .€_` e . _. `-'= ~> -,; r. ~, :~ ... ~.~ ACTION TAKEN TO ELIMINATE CAUSE Restarted T/C 1805; stabilized facility. Started 1802. Restarted T/C 1806. Replaced 2 suspected bad instrument cards. - ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition FLOW STATION 3 ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU A r-97 • Disposition 1. Sold 0 2. Reinjected 0 3. Flared or vented less than 1 hour 2,968 4. Flared or vented greater than 1 hour (Supplemental re rt required--See 20 AAC 25.235) 26,936 5. Pilot and Purge 19,904 6. Used for lease operations Fuel Assist 884,797 4 561 7.Other 0 TOTAL items 1- 7 939,166 8. NGL gas equivalent produced 0 9. Purchased gas 0 10. Transferred from: CGF 904,637 11. Transferred to: CCP 41,230,403 Remarks: T herehv certify that. th , f~renning is t/rne anti c~rmct. to the hc„ct. ~f my knnwlecTge. Signature: ~ s! ~~ Title: SUPERVISOR orm evt *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 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 following the month of disposition. Authority 20 AAC 25.235. ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION #3 APRIL 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS 8 CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN OR EQUAL TO1 HOUR 04/22/97 2303-2359 2,968 Shut down T/C 1806 due to electricaUinstrumentation UNPLANNED Started/restarted 1806. malfunction. • TOTAL 5 1 HOUR 2,968 FLARING EVENTS GREATER THAN 1 HOUR 04/15/97 1745-2120 5,600 T/C#1806 shutdown;seal oil system difficukies;4 failed start UNPLANNED Started/restarted T/C#1806; reduced inlet (Intermittent 105 .min) attempts. gas rates 04/21 /97 2104-2250 5,618 Shut down T/C 1806 due to electricaUnstrumentation UNPLANNED Started/restarted T/C 1806. malfunction. 3 S~PA~''~ ~~~ R-"T'~~~S1AR-'75 _ ZZ ' Zp = ~ `~ s7~t ~T 04/22/97 0001-0240 8,427 Shut down T/C 1806 due to electricaUinstrumentaCwn UNPLANNED Started/restarted T/C 1806. malfunction. A~pv • To Cil1 G a S ~' ®u~ oT ~"~.,a,c.~ ~NyAla~p.~ A 9 ®O~ SS~ Wiit/N CS~M>NCj $~qG~ U~A tn)t-,P~:E, ~,°.?O ~ H CJ ~' "'fb ~f~ `r.• 04/23/97 1815-1915 7,291 Shut down T/C 1806 due to instrumentation malfunction. UNPLANNED Replaced suspected bad card and installed monitoring device (Glitch catcher). Restarted T/C 1806. ` To ~~ / ~ Aye 0 s1t~ (~ J: ~~ TOTAL > 1 HOUR 26,936 ~ ~~~~ ~v~ , '~~3Rar_ .Flared 29,9oa Ci~9 ~ ~~` ~~C ~ ~'~1/~S ~~~,~,~.~ ' '°- PiloUPurge 19,904 ~!} --~,®,, (, ~' ~ ?- Continuous Assist 4.561 ~~ " ~y: /~' .~ ~ '~ '~p~ ~ j~•~~ TOTAL FLARED 54,369 ~'~ ~.~ ~ ~~ '~~ C(~j. .J ~ ~~ 7 ~ ~ ,p , ~ ~~~ st~ C~ • - ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Yeaz of Disposition FLOW STATION 3 ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU Maz-97 Disposition *Indicate contribution of each pool to total. 1. Sold 0 Pool Name Code Percent 2. Reiniected O PRUDHOE 640150 100 3. Flared or vented less than 1 hour 2,363 4. Flared or vented Greater than 1 hour 480 (Supplemental report required--See 20 AAC 25.235) 5. Pilot and Puree 20,202 6. Used for lease operations Fuel 907,94b Assist 5 606 Ufticial LJse Unl ~-`Flarin~'Auth~riratioi%,> I hr. 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Commissioner Date 11. Transferred to: CCP ~~ 43,177,157 7.Other 0 TOTAL items 1- 7 936,597 i 8. NGL Gas equivalent produced '~ ~ 0 '°' ~" ~ "'.-' 9. Purchased Gas ~. ~ _~ I=-1 1 0 ca e; ~~; `~~ .~: N ._... 10. Transferred from: CGF ~ ^ ; ~ ~~ 928,115 ® , J pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month following the month of disposition. Authority 20 AAC 25.235. orm evtsed Remarks: T herehv certify that. the oregning is mtP an~i crrrect. to the hest of my knnwlP.dge_ Signature: ~/~~ Title: SUPERVISOR ~~~ ' ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION #3 MARCH 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN 1 HOUR 03/02/97 1545-1620 361 Flaring for drill site shutdown. UNPLANNED Completed partial depressuring of DS 6/13 artificial lift line. 03/08/97 1430-1745 1,099 T/C 1802 shutdown to repair controller problems. UNPLANNED Swapped load to T/C 1801. • (Intermittent 35 min) 03/17/97 1225-1234 576 P5001SV HP cooler relief valve failed open. UNPLANNED Blocked in PSV. 03/21/97 0300-0305 60 Shutdown T/C 1803 for maintenance. UNPLANNED Normal compressor blowdown volume. 03/21 /97 1900-1905 3 Shut down T/C 1802 for maintenance. UNPLANNED Normal compressor blowdown volume upon shutdown. 03/21/97 2150-2155 120 Instrumentation malfunction. 3 aborted starts on TC 1803. UNPLANNED Normal compressor blowdown volume for (intermittent 20 min) failed start. 03/22/97 0155-0200 40 Instrumentation malfunction. Failed start attempt on T/C 1803. UNPLANNED Normal compressor blowdown volume for failed start. 03/22/97 1400-1405 2 Two failed starts on T/C 1802. UNPLANNED Normal blowdown volumes for failed starts. 1410-1415 03/22/97 1815-1820 80 Two failed starts on T/C 1803. UNPLANNED Normal blowdown volumes for failed starts. 1900-1905 • 03/23/97 1000.1005 5 5 failed starts on T/C 1802. UNPLANNED Normal compressor blowdown volumes for (intermittent 25 min) failed starts. 03/24/97 1005-1010 8 8 failed starts for T/C 1802. UNPLANNED Normal blowdown volumes for compressor. (intermittent 40 min) 03/25/97 0905-0910 6 6 failed starts on T/C 1802. UNPLANNED Normal compressor blowdown volumes for failed start. 03/25/97 2010-2015 3 Shut down T/C 1801 for return to standby. UNPLANNED T/C 1802 on line; returned to standby. Normal bowdown volume. TOTAL UNDER 1 HOUR 2,363 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION #3 MARCH 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS GREATER THAN 1 HOUR 03/19/97 0030-0045 480 Shut down T/C 1806 for inspection. Depressured suction and PLANNED (intermittent 60 min) discharge piping. • TOTAL OVER 1 HOUR 480 Flared PiloUPurge Continuous Assist TOTAL FLARED 2,843 20,202 5.808 28,851 Completed depressuring. C~ \J n u ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition FLOW STATION 3 ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU Feb-97 Disposition *Indicate contribution of each pool to total. 1. Sold 0 Pool Name Code Percent 2. Reinjected 0 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 0 4. Flared or vented greater than 1 hour 0 (Sup lemental re rt aired--See 20 AAC 25.235) 5. Pilot and Purge 18,289 6. Used for lease operations Fuel 836,904 Assist 516 11. Transferred to: CCP 41,055,589 7.Other 0 TOTAL items 1 - 7 855,709 8. NGL gas equivalent produced 0 9. Purchased ~as 0 10. Transferred from: CGF 855,193 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 following We monW of disposition. Authority 20 AAC 25.235. orm evt Remarks: I herehv certify that. the c-reQ~ing is trne an~i ect. to the hest of my kn~wledQe. Signature: j~o ~itle: SUPERVISOR ~~ ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION ~3 FEBRUARY 1997 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS 8 CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING EVENTS LESS THAN 1 HOUR • i ~--~ , ~ ? ~-a~41 ~~. _ isfiN ~° _. • :~4 ~ i„ i $ TOTAL UNDER 1 HOUR 0 ~~„~ ~ T3 "'"` ~-.' ~r ~,< ", FLARING EVENTS GREATER THAN 1 HOUR ~"`` • TOTAL OVER 1 HOUR Flared 0 PIIoUPurge 18,289 Continuous Assist ~ TOTAL FLARED 18,805 ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Year of Disposition FLOW STATION 3 ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU Jan-97 u • Disposition 1. Sold 0 2. Reiniected 0 3. Flared or vented less than 1 hour 1,275 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 0 5. Pilot and Purge 20,473 6. Used for lease operations Fuel Assist 947,365 121 7.Other 0 TOTAL items 1 - 7 969,234 8. NGL gas equivalent produced 0 9. Purchased gas a Con 0 .Commission Anchors 10. Transferred from: CGF e 967,753 11. Transferred to: CCP 46,135,588 Remarks: 1 herehv certifv that t , fnre~nin~ is true anrt c~rrert to the heel ~f my knnwle~~i~e. Si nature: ~ Z. Title: SUPERVISOR orm tu-4~~ t_xevtse *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 Uflicial tJse Onl --Fhrin __ Authorization > I hr. 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Commissioner Date ote: 11 volumes must be corrected to pressure of 14.65 Asia and to a temperawre of 60 degrees F. Report due by the 20th of the month following the month of disposition. Authority 20 AAC 25.235. DATE TIME FLARING EVENTS LESS THAN 1 HOUR 01/12/97 1250-1320 01/14/97 1415-1500 • 01/15!97 0922-0952 01/22/97 0730-0740 01/24/97 1400-1410 TOTAL UNDER 1 HOUR 1,275 FLARING EVENTS GREATER THAN 1 HOUR • TOTAL OVER 1 HOUR Flared PiloUPurge Continuous Assist TOTAL FLARED 0 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING INCIDENTS FLOW STATION #3 JANUARY 1997 PLANNED VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE 3 Electrical malfunction due to BESD valve failing open. UNPLANNED Relatched BESD valve. 863 Fitting leak on commonline 1313: depressured commonline. UNPLANNED Completed depressuring. 403 T/C 1806 taken out of service for inlet filter cleaning. PLANNED Reduced inlet gas rates. 3 Shut down 1802 for 1,000 hour inspection. PLANNED Started T/C 1801. 3 Shut down 1801, put compressor in stand by. PLANNED Started T/C 1802. 1,275 I~C~h~11O~ 20,473 121 FED 21 X997 21 ,669 Alaska iii ~ Gas Cons. Commissian Anchorage