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Home My WebLink AboutNorthstar / BP ExplorationSTATE OF ALASKA AOGCC GAS DISPOSITION FILES YEAR: 2005 FACILITY: Northstar OPERATOR: BP EXPLORATION (ALASKA) INC STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. MonttUYear of Disposition Jan-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 6 Sold Q Total Volume. . Pool Name Pool Code Percent Reinjected 7 11 638 739 Northstar 590100 100% . , , 8 Flared or vented 1 hour or less 4 394 . , 9 Flared or vented more than t hour (see instr ) 29 331 . . , Pilot and Purge 10 Q . 11 Used for lease operations (specif in Remarks) 0 . y 12 Other (see instructions) 0 Official Use Only . Authorization >1 hr: MCF TOTAL VOLUME (ITEMS 6-12) 13 11 672 464 Safety ~~ 3 3/ 1 . , , MCF 14 NGL Gas Equivalent Lease Use . ' MCF 15 Purchased gas 1,883,508 onse n . Wa e: MCF 16. Transferred from: 17 Transferred to: (Express as a negative #) iss' a Dat . 1s. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 609,454, pilot purge 2759, injection 1,271,295 I hereby certify that the foregoing is true and cor c to the best of my knowledge. Note: All volumes must be Signature Title Mana er, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia q and to a temperature of 60o F. Printed Name Bernard W. H8 n Phone (907)564-5028 Date ~- ! !~~ Auth rlt 20 AAC25.235. ~~'' Form 10-422 Rev. 1/2004 Submit in Duplicate Start Datelrime End Date/Time Minutes Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare Planned LessT hanlHour 1/2/05 9:10 PM 1/2/05 9:12 PM 2 1 NS-31 pre-rig well work Rig work over Other LP 1/2/05 9:49 PM 1/2/05 9:55 PM 6 6 NS-31 Pre-rig well work Rig work over Other HP1 1/3/05 2:39 PM 1/3/05 2:47 PM 8 31 Normal purge during HP A restart sequence. restarted HPA Equipment Outage HP1 1/3/05 2:54 PM 1/3/05 3:02 PM 8 13 Production shutdown due to NGL accumulator high level restarted HPA HPA Star[ Gas LP switch tripped on false high signal. 1/3!05 7:23 PM 1/3/05 7:31 PM 8 33 Normal flare during HP start sequence purge.. restarted HPA Equipment Outage HP1 1/3/05 7:36 PM 1/3/05 7:44 PM 8 13 Production shutdown due to NGL accumulator high level restarted HPA HPA Start Gas LP switch tripped on false high signal. 1/18/05 7:15 AM 1/18/05 7:46 AM 31 180 Restart of pressurized HP Compressor B None: Normal start HPB Start Gas HP1 1/18/05 7:29 AM 1118/05 7:33 AM 4 6 Restart of pressurized HP Compressor B None: Normal start HPB Start Gas LP 1/19/05 3:35 PM 1/19/05 3:39 PM 4 25 S/D HPB to fix fuel control valve none Equipment Outage HP7 1/19/05 3:43 PM 1/19/05 3:46 PM 3 9 S/D HPB to fix fuel control valve none Equipment Outage HP1 1/19/05 4:04 PM 1/19/05 4:08 PM 4 6 S/D HPB to fix fuel control valve none Equipment Outage HPi 1/19/05 4:06 PM 1/19/05 4:12 PM 6 11 S/D HPB to fix fue(control valve none Equipment Outage LP 1119/05 4:48 PM 1/19/05 5:08 PM 20 252 S/D HPB to fix fuel control valve none Equipment Outage HP1 1119/05 5:09 PM 1119!05 5:13 PM 4 6 S/D HPB to fix fuel control valve none Equipment Outage LP 1/20/05 8:46 PM 1/20/05 8:50 PM 4 6 Started HP-A after plant upset. Nome: Mormal HP start HPA Start Gas LP 1/20/05 8:56 PM 1/20/05 9:07 PM 11 41 Started HP-A after plant upset. Nome: Mormal HP start HPA Purge Gas HPi 1/22/05 5:54 AM 1/22/05 6:17 AM 23 67 Depressured test separator to change out flow meter none Other HPi orifice NSTR Flare report 01-05 FINAL.xIs 1 of 3 Start Date/Time End Date/Time Minutes Minutes MCF Incident/Cause Description Remediation Taken Event Type 1/24/05 9:14 AM 1/24/05 9:17 AM 3 1 Purging contactor bridle sloped purging Other 1/24/05 9:18 AM 1/24/05 9:21 AM 3 1 Purging contactor bridle sloped purging Other 1/24/05 9:23 AM 1/24/05 9:25 AM 2 1 purging contactor bridle sloped purging Other 1/24/05 9:27 AM 1/24/05 9:31 AM 4 1 Purging contactor bridle sloped purging Other Group Total: 712 Planned GreaterThanlHour 1/2/05 8:18 PM 1/2/05 9:46 PM 88 142 NS-31 Pre-rig well work Rig work over Other Group Total: 142 Unplanned LessThaniHour Group Total: 3,682 Unplanned GreaterThanlHour 1/8/05 9:07 AM 1/5/05 11:10 AM 123 329 high scrubber level in Ip compresser ersulted in plant OS D Plant OSD Plant Integrity 1/8/05 9:08 AM 1/8/05 11:24 AM 136 1,643 high scrubber level in Ip compresser ersulted in plant OS D Plant OSD Plant Integrity 1/9/05 12:29 PM 1/9/05 6:30 PM 361 2,930 LP Comp. S/D due to 2nd stg feed back control failure. repaired controler started machine. Equipment Outage 1/9105 12:56 PM 119/05 8:08 PM 312 1,833 LP Comp. S/D due to 2nd stg feed back control failure. repaired controler started machine. Equipment Outage 1/12/05 8:45 PM 1/13/05 7:00 AM 615 2,904 1st stage suction scrubber HHL on the LP S/I wells the then restarted plant. Upset 1/12/05 8:45 PM 1/13/05 12:55 PM 970 6 659 , 1st sta a suction scrubber HHL on the LP ! S/1 wells the th res rt t. en to ed clan Upset 1/13/05 8:25 AM 1!13/05 10:33 AM 128 377 1st stage suction scrubber HHL on the LP S11 wells the then restarted plant. Upset 1/13/05 1:06 PM 1/14/05 1:40 AM 754 2,453 PCV-2121 is leaking to flare Trying to repair Plant Integrity NSTR Flare report 01-05 FINAL.xIs Flare 2of3 LP LP LP LP HP7 LP HP1 LP HP1 LP H~7 LP HP1 Start Date/Time End Date/Time Minutes Minutes MCF 1/14/05 1:52 AM 1/14/05 9:05 AM 433 1,379 1/14/05 9:32 AM 1/14/05 11:11 AM 99 403 1/14/05 9:34 AM 1/15/05 7:30 AM 1316 2,958 1/15/05 8:00 AM 1/16/05 1:59 PM 1799 3,633 1/20105 5:33 PM 1!20/05 8:43 PM 190 992 1/20/05 6:14 PM 1/20/05 8:54 PM 160 696 Group Total: 29,189 Report Total: 33,725 NSTR Flare report 01-05 FINAL.xis IncidenUCause Description Remediation Taken PCV-2121 is leaking to flare Trying to repair had NGL upset that pressured up the crude stablizer cut back on the wells PCV-2121 is leaking to flare off the contactor waiting for repairs PCV-2121 leaking to flare preparing plan to fix While putting NS-22 into Test it caused NGL upset and Shut wells in. shut down plant. While putting NS-22 into Test it caused NGL upset and Shut wells in. shut down plant ~~.. Event Type Flare Plant Integrity HP7 Upset LP Plant Integrity HP7 Plant Integrity HPi Upset LP Upset HP1 3of3 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Feb-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of ~ Total Volume. 6. Sold Pool Name Pool Code Percent 04 10 606 Northstar 590100 100% 7. Reinjected , ,5 h l 11 932 our or ess 8. Flared or vented 1 , h h i 9 197 an 1 our (see nstr.) 9. Flared or vented more t , i P 0 lot and urge 10. P l i if i R k 0 ease operat ons (spec y n emar 11. Used for s) ~ Official Use Only 12. Other (see instructions) Authorization >1 hr: Safet ~ MCF 10 62 3 y ~ ( ~ i 13. TOTAL VOLUME (ITEMS 6-12) , 7,6 3 Le U MCF 14. NGL Gas Equivalent Co ation MCF 2,388,322 15. Purchased gas W te: MCF 16. Transferred from: / // .~ / `~" f E i # ommis ' er Date erred to: ( xpress as a negat ve ) 17. Trans 1s. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 587,605, pilot purge 2492, injection 1,798,225 I hereby certify that the foregoing is true an ect to the best of my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date ~'~- - Auth rit 20 AAC 5.2 Form 10-422 Rev. 1/2004 Submit in Duplicate Start Datelrime End Date/Time Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare Planned LessThanlHour 2/1/05 1:43 AM 2/1/05 2:30 AM 47 113 NS 7 depressurization for well tree modifications. Equipment Safe Out HP1 2/1/05 7:12 AM 2/1/05 7:30 AM 18 28 NS 7 safe out for tree modification. Equipment Safe Out HP7 2/1/05 7:39 AM 2/1/05 7:45 AM 6 7 NS 7 safe out for well tree modifications. Equipment Safe Out HPi 2/2/05 4:48 PM 2/2/05 5:45 PM 57 118 NS 7 depressurization for well head repair. Equipment Safe Out HP1 2/2/05 9:44 PM 2/2/05 9:57 PM 13 35 NS 7 depressurization for well head repair. Equipment Safe Out HP1 2/3/05 10:56 AM 2/3/05 11:00 AM 4 6 HPA Start Gas LP 2/4/05 5:13 AM 2/4/05 5:20 AM 7 32 Normal purge gas during HP A restart sequence. Equipment Outage HP7 2/6/05 8:21 AM 2/8/05 9:18 AM 57 105 NS 8 depressure and safe out.. Equipment Safe Out HP1 217/05 1:27 PM 2!7/05 1:30 PM 3 4 HP A shutdown. Equipment Outage HPi 2/7/05 9:48 PM 217/05 9:56 PM 8 30 Normal purge gas during HP A start sequence. Equipment Outage HP7 2!7/05 10:00 PM 2/7/05 10:04 PM 4 7 HPA Start Gas LP 2/8/05 9:08 AM 2/8/05 9:16 AM 8 29 Normal purge gas during HP A start sequence. Equipment Outage HPi 2/8/05 9:19 AM 2/8/05 9:23 AM 4 7 HPA Start Gas LP 2/14/05 12:11 AM 2/14/05 12:30 AM 19 30 Planned facility shutdown to water wash the crude None necessary. Other LP stabilizer. 2/14/05 3:51 PM 2/14/05 4:51 PM 60 199 Planned facility shutdown to water wash the crude None necessary. Other LP stabilizer. 2/14/05 5:20 PM 2/14/05 5:26 PM 6 11 Planned facility shutdown to water wash the crude None necessary. Other HP1 stabilizer. 2/14/05 5:41 PM 2/14/05 5:45 PM 4 6 Planned facility shutdown to water wash the crude None necessary. Other HP1 NSTR Flare Report 02-2005 FINAL.xIs 1 of 4 ~„ ~ ~ ir,d~ I ii r. -- ~,~~ _... _,.. Start Date/Time End Date/Time Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare stabnizer. 2/14/05 5:47 PM 2/14/05 5:55 PM 8 17 Planned facility shutdown to water wash the crude None necessary. Other LP stabilizer. 2/14105 6:04 PM 2/14/05 6:40 PM 36 100 Planned facility shutdown to water wash the crude None necessary. Other LP stabilizer. 2/15/05 1:01 AM 2/15/05 1:07 AM 6 3 Planned facility shutdown to water wash the crude None necessary Plant Startup LP stabilizer. 2/15/05 10:09 AM 2/15/05 10:17 AM 8 41 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 2/15/05 10:19 AM 2/15/05 10:22 AM 3 5 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP7 2/15/05 10:33 AM 2/15/05 10:36 AM 3 4 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 2/15/05 12:17 PM 2/15/05 12:20 PM 3 3 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 2/15/05 4:28 PM 2/15/05 4:32 PM 4 44 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP2 2/15/05 4:28 PM 2/15/05 4:35 PM 7 56 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 2/15/05 4:40 PM 2/15/05 4:45 PM 5 20 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 2/15/05 4:57 PM 2/15/05 5:13 PM 16 46 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 2/15/05 5:07 PM 2/15/05 5:15 PM 8 13 Attempt start on HPB Compressor. None, normal start sequence. HPB Start Gas LP 2/15/05 9:41 PM 2/15/05 9:48 PM 7 54 Bringing on NS-08 caused minor flaring off of the None necessary Plant Startup HP1 Contactor and HP Separator. Group Total: 1,171 Planned GreaterThanl Hour 2/6/05 2:23 PM 2/8/05 3:38 PM 75 170 Test separator depressured for NS 8 well work. Equipment Safe Out HPi 2!14/05 3:54 PM 2/14/05 4:56 PM 62 159 Planned facility shutdown to water wash the crude None necessary. Other HP1 stabilizer. NSTR Flare Report 02-2005 FINAL.xIs 2 of 4 IrciF.. ~:..d W ai .'..~ ~xi.luv.i :xe ~ ~ s. a i ~ 1 ?` 3 ~ r ' i . . . ~,.~ d iw ~"'~!ililW I uitl i I,:,>~,ix +d x,~~,i, i~~1i~ 4 i Y,h '~:, e i ,; r w i I u~ i.w~l. iar7,~^ ~ ~ " : i k l ~ ~ ~ ~~ ' m z iii ~~:~~. ^.'rav~'~ ~ P~~' Hr„ : :~ -e , _ ~ ' -~ wrJ t s~° ,~~ h~ ~~r „~~y~,~. ' ' .. - ,.` .. 1 y , n,, u y .~;, .,k},,,~F nL'a "e4„ tl~ : ~'?, w~, I a . . 1~ r c~~ c: J ~i1w. : 1 t= ~Tau~ , _ . .wM~!^iji rw~ 7 ,, ._ ~ .,", ~,,:~,~, r b;; i ,~ r: ' , u '-- ~~r,plm "^^~cs:.w:,, ~ :., , s ~.zr n,m.,. P ~ '~ .~, ~ ~ ~ ~i ii~ ~ ~ ..t r~Gr'r` ~,. ~^r~.,.{,~~ ~ a w'sTri "~ dr ;lu Fy ~ i~ i JIWIG'li a ~ ~W~fu ~l~~ : r:: ~1L ;'u'~u'~ ~ ~ ~ r , ° ~i .~ ~a, ..., M,°~e ii ar, ... ,. _w ., , ~:i~w~~.~..V . ., ~.~ ~..~ _.~, , _,. ,~ . . . . ,. . i r ,,,~~,. w. ~ ~ N , Start Date/Time End Date/Tlme Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare 2/14/05 5:54 PM 2/14/05 11:08 PM 314 2,971 Planned facility shutdown to water wash the crude None necessary. Other HP7 stabilizer. 2/14/05 6:54 PM 2/14/05 11:05 PM 251 839 Planned facility shutdown to water wash the crude None necessary. Other LP stabilizer. 2/14/05 11:10 PM 2/15/05 1:11 AM 121 274 Planned facility shutdown to water wash the crude None necessary Plant Startup HP1 stabilizer. 2/14/05 11:12 PM 2/15/05 12:59 AM 107 375 Planned facility shutdown to water wash the crude None necessary Plant Startup LP stabilizer. Group Total: 4,788 Unplanned LessThanlHour Group Total: 10,761 Unplanned GreaterThanl Hour 2!7/05 1:48 PM 2/7/05 3:13 PM 85 610 Plant upset from HP A shutdown. 2/8/05 7:06 AM 2/8/05 8:35 AM 89 545 Plant S/D and LP Ccompressor start up. 2/8/05 7:27 AM 2/8/05 8:48 AM 81 276 LP Compressor startup. 2/10/05 1:35 PM 2/10/05 2:40 PM 65 276 Crude stabilizer carry over to LP suction scrubber caused Shut in wells and restart compressor LAHH in 1st stage suction scrubber. 2/10/05 1:36 PM 2/10/05 2:5B PM 80 217 Crude stabilizer carry over to LP suction scrubber caused Shut in wells and restart compressor LAHH in 1st stage suction scrubber. __ __ _ __. ry..._.......... _._ _ _ _ p _._. 2/10/05 8:07 PM 2/11/05 1:09 AM 302 1,112 Crude stabilizer car over to LP suction scrubber caused Shut in wells and restarted com ressor. LAHH in 1st stage suction scrubber. 2/10/05 9:14 PM 2/11/05 1:18 AM 244 746 Crude stabilizer carry over to LP suction scrubber caused Shut in wells and restarted compressor. LAHH in 1st stage suction scrubber. Upset Upset Upset Upset Upset Upset Upset 2/28/05 2:25 AM 2/28/05 4:12 AM 107 57 TEG system upset. Flaring from Glycol Skimmer OPS and engineering working on repair and Upset problems. 2/28/05 8:33 AM 2/28/05 4:04 PM 451 466 TEG system upset. Flaring from Glycol Skimmer OPS and engineering working on repair and Upset NSTR Flare Report 02-2005 FINAL.xIs HP7 HP1 LP LP HP1 LP HP1 LP LP 3of4 Q I l~ p ~ ~ Y~' r t J'I r L r. II YlT A L 'I "' 'LW J Y 'I H I. K l A'~IM Y"`r S '. '^,. '~ 'P U7M F1 ~' ~ 'Y ~ .. f.0. i z . '6 ~~ I I y I'u y '. n ! "._ " ." .,.. ~L r~',~'~ I "'~ ' ':$'Sr~~. Flu;..:.'.....n~U~.,'il "al.". a^_. ~~r. ~ ....,_"I..~ ..i . uNm ism ..1.".hi'~~:w~~.~~'~ :n "r.'~~.wl~i.:~!i;cW a auvl~6:~.:i'.n~ m Start Date/Time End Date/Time Minutes MCF IncidenUCause Description 2/28/05 5:43 PM 2/28/05 7:12 PM 89 49 TEG system upset. Flaring from Glycol Skimmer 2/28/05 7:32 PM 2/28/05 9:11 PM 99 54 TEG system upset. Flaring from Glycol Skimmer Group Total: 4,409 Report Total: 21,129 NSTR Flare Report 02-2005 FINAL.xIs Remediation Taken Event Type problems. OPS and engineering working on repair and Upset problems. OPS and engineering working on repair and Upset problems. Flare 4of4 LP LP STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Mar-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 0 Total Volume. 6. Sold Pool Name Pool Code Percent 821 14 648 Northstar 590100 100% 7. Reinjected , , 2 294 8. Flared or vented 1 hour or less , 1 903 9. Flared or vented more than 1 hour (see instr.) , 0 10. Pilot and Purge 0 11. Used for lease operations (specify in Remarks) 0 Official Use Only 12. Other (see instructions) Authorization >1 hr: Safet q ;~ I MCF 14 825 845 y (~ ~ 13. TOTAL VOLUME (ITEMS 6-12) , , Lease Use MCF 14. NGL Gas Equivalent Conservation MCF 1,714,588 15. Purchased gas Waste: MCF 16. Transferred from: _ S ~~ ~ i . Commissions Date 17. Transferred to: (Express as a negat ve #) is. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 686,615, pilot purge 2759, injection 1,025,214 I hereby certify that the foregoing is true and correct the best of my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date ~ th rit 5.2 J~;~ Form 10-422 Rev. 1/2004 Submit in Duplicate Start Date/Time End Datelrime Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare Planned LessThanl Hour 3/2/05 11:51 AM 3/2/05 11:54 AM 3 5 TEG system upset. Flaring from Glycol Skimmer OPS and engineering working on repair and Upset problems. 3/20/05 5:16 PM 3/20/05 5:20 PM 4 15 Test seperator sated out for Coil Tubing Unit to flow back Equipment Safe Out from NS 31 work. 3/20/05 5:27 PM 3/20/05 5:35 PM 8 24 Coil tubing unfit flow back during NS 31 work. Equipment Safe Out 3/20/05 5:50 PM 3/20/05 6:09 PM 19 33 Coil Tubing Unit flow back for NS 31 work. Equipment Safe Out 3/22/05 7:33 AM 3/22/05 7:41 AM 8 9 CTU flowback during work on NS 31. Equipment Safe Out 3/22/05 7:49 AM 3/22/05 8:16 AM 27 46 CTU flowback during work on NS 31. Equipment Safe Out 3/22/05 8:20 AM 3/22/05 8:24 AM 4 6 CTU flowback during work on NS 31. Equipment Safe Out 3/22/05 1:01 PM 3/22/05 1:07 PM 6 19 CTU flowback during work on NS 31. Equipment Safe Out 3/22/05 1:27 PM 3/22/05 1:35 PM 8 29 CTU flowback during work on NS 31. Equipment Safe Out 3/22/05 1:44 PM 3/22/05 2:0B PM 22 110 CTU flowback during work on NS 31. Equipment Safe Out 3/27/05 1:37 PM 3/27/05 1:55 PM 18 97 Bleed NS-24 though test seperator Finished bleeding NS-24 Equipment Safe Out 3/27/05 1:57 PM 3/27/05 1:59 PM 2 4 Bleed NS-24 though test seperator Bleed NS-24 though test seperator Equipment Outage 3/30/05 4:41 PM 3/30/05 4:45 PM 4 4 Flaring off LP seperator, suspect freezing hydrates in d/c Raise setpoint of 1st stg d/c coolers. Upset coolers. Group Total: 401 Unplanned LessThanl Hour Group Total: Unplanned GreaterThanl Hour 3/2/05 3:08 AM 3/2/05 4:44 AM NSTR Flare Report 03-2005 FINAL.xis 1,893 55 TEG system upset. Flaring from Glycol Skimmer OPS and engineering working on repair and Upset 1 of 2 LP HPi HPi HP1 HP1 HP1 HP7 HP1 HP1 HP1 HPi HPi LP LP Start Datelfime End Datelfime Minutes MCF Incident/Cause Description 3/9/05 4:06 AM 3/9/05 5:22 AM 76 434 PSHH-2056 froze and fail witch S/D the LP Comp 3/9/05 4:06 AM 3/9/05 6:12 AM 126 1,203 PSHH-2056 froze and fail witch S/0 the LP Comp 3/30/05 10:40 AM 3/30/05 12:20 PM 100 211 Flaring off LP Seperator, changing well set. Group Total: 1,903 Report Total: 4,197 NSTR Flare Report 03-2005 FINAL.xIs Remediation Taken Event Type problems. Shut In high GOR wells. fixed switch and Equipment Outage restarted plant. Shut In high GOR wells. fixed switch and Equipment Outage restarted plant. Cut back chokes. Upset Flare 2of2 LP HP1 LP STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition A r-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of l S 0 Total Volume. 6. o d Pool Name Pool Code Percent i t 7 R d 10 967 502 Northstar 590100 100% . e njec e , , Fl 1 h l 9 038 ared or vented our or ess 8. , Fl h h i 1 717 ared or vented more t an 1 our (see nstr.) 9. , i P 0 10. P lot and urge i if i R k f 0 or lease operat y n emar 11. Used ons (spec s) 1 i O h i 0 Official Use Onfy t er (see nstruct ons) 2. Authorization >1 hr: Safet MCF 10 978 257 y t 1' 13. TOTAL VOLUME (ITEMS 6-12) , , Lease Use MCF 14. NGL Gas Equivalent Conservation MCF 2,976,843 15. Purchased gas Waste: MCF 16. Transferred from: -~7 n / ""J ~ .,. ~ Date C~ 17. Transferred to: (Express as a negative #) 1a. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 604,165, pilot purge 2670, injection 2,370,008 I hereby certify that the foregoing is true and correct to the best of my knowledge. / ~ ~~ ~~ ~ ~ ~ ~~ Note: All volumes must be Signature L~VI't1i~lL ~~1~'lJ(~fx~ ~ Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psis and to a temperature of 60o F. Printed Name Bernard W. H8 n Phone (907)564-5028 Date 5 ~ ~Q5 A t Orlt 20 C .2 ~f~" ~ / Form 10-422 Rev. 1/2004 Submit in Duplicate Start Date rime End Date/Time Minutes MCF Planned LessThanlHour 412105 1:13 PM 4/2/05 1:21 PM 8 73 4/2/05 1:27 PM 4/2/05 1:30 PM 3 2 4/2/05 2:17 PM 4/2/05 2:26 PM 9 62 1 PM 4/ 2/05 7.55 12/ 7: P 4/ OS 58 M 3 6 4112/05 8:07 PM 4/12/05 8:22 PM 15 53 4/12/05 9:49 PM 4/12/05 10:08 PM 19 43 4/13/05 12:39 AM 4/13/05 12:46 AM 7 34 4113/05 12:59 AM 4/13/05 1:03 AM 4 6 4/13/05 2:29 AM 4/13/05 2:33 AM 4 6 4/13/05 3:43 AM 4/13/05 3:48 AM 5 10 4/13/05 4:04 AM 4113/05 4:10 AM 6 11 4117/05 5:49 PM 4/17/05 6:02 PM 13 14 4117/05 6:09 PM 4/17/05 6:44 PM 35 41 4/17/05 7:12 PM 4/17/05 7:17 PM 5 10 4/17!05 7:45 PM 4/17105 7:48 PM 3 8 4117/05 7:53 PM 4/17/05 7:56 PM 3 11 IncidenUCause Description Remediatlon Taken Event Type Flare Shutdown HP " B "compressor for maintenance. Flaring None, Normal shutdown sequence. Equipment Outage HP1 when machine blowdown valves opened. Shutdown HP " B "compressor for maintenance. Flaring None, Normal shutdown sequence. Equipment Outage HP1 when machine blowdown valves opened. Bleed down compressor for safe-out. Complete bleedown. Equipment Safe Out HP1 Depressure Test header for NS-24 Wellhead removal Lower Header Pressure achieved Well Outage HP1 Depressure Test header for NS-24 Wellhead removal Lower Header Pressure achieved Well Outage HPt Depressure Test header for NS-24 Wellhead removal Lower Header Pressure achieved Well Outage HP1 NS-OS start-up to depressured Test separator untill well Took well to system as soon as possible Well Outage HPt unloaded NS-OS start-up to depressured Test separator untill well Took well to system as soon as possible Well Outage HP1 unloaded NS-OS start-up to depressured Test separator untill well Took well to system as soon as possible Well Outage HP1 unloaded NS-OS start-up to depressured Test separator untlll well Took well to system as soon as possible Well Outage HP1 unloaded NS-OS start-up to depressured Test separator untill well Took well to system as soon as possible Well Outage HP1 unloaded Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP1 job flowback Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP1 job flowback Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP1 job flowback Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP1 Job flowback Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP7 job flowback NSTR Fiare Report 04-2005 FINAL.xis 1 of 4 Start Datelfime End DatelTime Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare 4/17/05 7:59 PM 4/17/05 8:03 PM 4 17 Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP1 job flowback 4/17/05 8:09 PM 4/17/05 8:12 PM 3 7 Depressure Test Separator for to unload NS-19 for post-acid put well to system as soon as possible Well Outage HP1 job flowback 4/17/05 10:52 PM 4117/05 11:14 PM 22 64 Depressure Test Separator to bleed NS-24 piping down for N/A Well Outage HP1 tree removal 4/18/05 2:19 AM 4118/05 2:43 AM 24 10 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4118/05 3:34 AM 4/18105 3:57 AM 23 9 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4118/05 4:47 AM 4/18105 5:14 AM 27 230 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HP1 13 4/18/05 5:00 AM 4/18/05 5:27 AM 2T J 50 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4118/05 5:55 AM 4/18/05 5:58 AM 3 10 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HPt 4/18/05 7:04 AM 4/18/05 7:37 AM 33 8 3rd stage discharge flange leak repair Shutdown Equipment Sate Out LP 4/18/05 7:t2 AM 4/18105 7:16 AM 4 6 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HP1 4/18/05 7:50 AM 4118/05 7:52 AM 2 3 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HP1 4/18/05 9:12 AM 4/18105 9:42 AM 30 5 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4/18/05 10:41 AM 4M8/OS 11:31 AM 50 26 3rd stage discharge flange leak repair Startup Plant Startup LP \I z) 4/18/05 11:29 AM 4118/05 11:43 AM 14 27 3rd stage discharge flange leak repair Startup Plant Startup HP1 4/18/05 4:45 PM 4/18/05 5:24 PM 38 19 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP ~) 4/18/05 5:20 PM 4118/05 5:28 PM 8` 39 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HP1 4/18/05 5:38 PM 4/18/05 6:23 PM 45 35 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP / 3 i) 4/18/05 6:07 PM 4/18/05 6:36 PM 28` 204 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HP1 4/18/05 B:37 PM 4/18/05 6:48 PM 11 23 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4/18/05 6:48 PM 4118/05 6:58 PM 10 52 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HP1 NSTR Flare Report 04-2005 FINAL.xIs 2 of 4 Start Date/Tlme End DatelTime Minutes MCF IncidenUCause Description Remediation Taken Event Type Flare 357 4H8/OS B:55 PM 4/18!05 7:33 PM 38 37 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4/18/05 7:36 PM 4/18/05 7:40 PM 4 8 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4M 8/05 7:59 PM 4/18/05 8:34 PM 35 225 3rd stage discharge flange leak repair Shutdown Equipment Safe Out HPt 4/18/05 8:08 PM M18J05 8:44 PM /0 36\~ 7 33 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4/18/05 9:12 PM 4/18105 9:43 PM 31 12 3rd stage discharge flange leak repair Shutdown Equipment Safe Out LP 4/18/05 10:21 PM 4/18/05 10:53 PM 32 14 3rd stage discharge flange leak repair Startup Plant Startup LP 4H8/OS 11:18 PM 4M8/05 11:53 PM 35 23 3rd stage discharge flange leak repair Startup Plant Startup LP 4H8/05 8:33 PM 4/19/05 8:37 PM 4 8 Depressure Test Separator for to unload NS-18 for post-acid took well to system as soon as possible Well Outage HPt Job flowback 4119/05 10:53 PM 4/19/05 11:00 PM 7 21 Depressure Test Separator for to unload NS-18 for post-acid took well to system as soon as possible Well Outage HP1 job flowback 4/19/05 11:06 PM 4/19105 11:11 PM 5 13 Depressure Test Separator for to unload NS-18 for post-acid took well to system as soon as possible Well Outage HP1 job flowback 4/20/05 6:09 AM 4/2x05 6:13 AM 4 11 Lowered test separator pressure to help unload NS18 None, normal unloading procedure. Commisstoning HP1 following acid job. 4120/05 6:44 AM 4/20/05 6:47 AM 3 7 Lowered test separator pressure to help unload NS18 None, normal unloading procedure. Commissioning HP1 following acid job. 4120/05 7:19 AM 4/20105 7:23 AM 4 9 Lowered test separator pressure to help unload NS18 None, normal unloading procedure. Commissioning HP1 following acid job. 4/20/05 8:23 AM 4/20/05 8:25 AM 2 0 Lowered test separator pressure to help unload NS78 None, normal unloading procedure. Commissioning LP following acid job. 4/20/05 8:35 AM 4/2x05 9:53 AM 18 7 Lowered test separator pressure to help unload NS18 None, normal unloading procedure. Commissioning LP following acid job. 4/20/05 10:32 AM 4/2x05 11:00 AM 28 13 Lowered test separator pressure to help unload NS18 None, normal unloading procedure. Unknown LP following acid job. 4/20/05 6:31 PM 4/20105 6:36 PM 5 24 Lowered test separator pressure to help unload NS16 None, normal unloading procedure. Commissioning HP1 following acid job. 4/20/05 6:38 PM 4120/05 6:41 PM 3 7 Lowered test separator pressure to help unload NS16 None, normal unloading procedure. Commissioning HP1 following acid job. NSTR Flare Report 04-2005 FINAL.xIs 3of4 Start Date/Time End Date/Time 4/21/05 3:43 AM 4/21/05 3:54 AM 4/21/05 3:52 AM 4/21/05 3:56 AM M21/OS 4:00 AM 4/21/05 4:02 AM 4/21/05 4:19 AM 4/21/05 4:22 AM 4/21/05 5:33 PM 4/21/05 5:36 PM 4/24/05 12:38 PM 4/2M05 12:52 PM 4/24/05 1:12 PM 4/24/05 1:21 PM 4/25/05 9:50 AM 4/25/05 9:58 AM 4/28/05 8:59 AM 4/28/05 9:04 AM 4/28/05 7:25 PM 4/29/05 7:33 PM 4130/05 11:55 PM 5/1/05 12:01 AM Group Total: Planned Greatel'Than1 Hour 4/18/05 11:33 AM 4/18/05 4:12 PM 4/18/OS 11:47 AM 4/18/05 3:55 PM Group Total: Unplanned LeSSThanlHour Group Total: Report Total: Minutes MCF Incident/Cause Description Remediation Taken Event Type Flare 11 6 Flaring off test separator, lowered to unload NS16 after acid None, complete unloading. Commissioning LP job. 4 21 Flaring off test separator, lowered to unload NS16 after acid None, complete unloading. Commissioning HP1 job. 2 4 Flaring off test separator, lowered to unload NS16 after acid None, complete unloading. Commissioning HP1 job. 3 7 Flaring off test separator, lowered to unload NS16 after acid None, complete unloading. Commissioning HP7 job. 3 5 Flaring off test separator, lowered to unload NS76 after acid None, complete unloading. Commissioning HP7 job. 14 59 Flaring off test separator, bleeding pressure off of NS9 None, return separator to normal setpoint upon Equipment Outage HP1 divert valve for maintenance. wmpletion of work 9 50 Flaring off test separator, bleeding pressure ott of NS9 None, return separator to normal setpoint upon Equipment Outage HP1 divert valve for maintenance. completion of work. 8 14 Flaring due to HP B shutting down due to fuel valve problem. Shut-in wells to mitigate flare, restart compressor. Equipment Outage LP 5 40 Depressured Test Separator to make adjustment to test Adjusted valve and put Test Separator back in Equipment Safe Out HPt header divert valve. service. 8 41 Purging HPB for restart. None, normal start sequence. HPB Purge Gas HPt 6 17 Flaring off test separator while unloading well after it was Reset flare setpoint once well begins to flow. Other HP1 acidized. 1,971 279 856 3rd stage discharge flange leak repair Startup Plant Startup LP 248 862 3rd stage discharge flange leak repair Startup Plant Startup HP7 1,717 7,067 10,755 NSTR Flare Report 04-2005 FINAL.xIs 4 of 4 Northstar Gas Disposition Subject: Northstar Gas Disposition From: Stephen Mcmains <steve mcmains ~~admin.state:ak_us> Date: Thu, 02 J~zn 2005 12:45`21 -0800 To:.'~Illl~ lie<~ler<fi~dlear~,"~ibp.~~~m:.. Ann, Jim Regg is looking at Northstar gas disposition and would like to see the unplanned < 1 Hr flare events with a gas volume of 9038 mcf of gas. The report shows 1971 mcf of the planned events but no unplanned events are listed. He needs these unplanned events to analysis the < 1 Hr events. Could you provide them to me by June 10, 2005 thanks. Steve Start Date/Time End Date/Time Minutes MCF Unplanned LessThan1Hour 4/1/05 2:25 AM 4/1/05 2:27 AM 2 3 4/1/05 5:04 AM 4/1/05 5:09 AM 5 31 4/1/05 5:11 AM 4/1/05 5:16 AM 5 15 4/1/05 5:20 AM 4/1/05 5:25 AM 5 66 4/1/05 5:28 AM 4/1/05 5:33 AM 5 65 4/1/05 5:35 AM 4/1/05 6:01 AM 26 225 4/1/05 5:46 AM 4/1/05 5:49 AM 3 34 4/1105 5:48 AM 4/1/05 5:50 AM 2 2 4/1/05 5:56 AM 4/1/05 5:59 AM 3 2 4/1/05 6:02 AM 4/1/05 6:16 AM 14 84 4/1/05 6:07 AM 4/1/05 6:10 AM 3 26 4/1/05 7:15 AM 4/1/05 7:18 AM 3 6 4/1/05 7:30 AM 4/1/05 7:35 AM 5 13 4/1/05 8:33 AM 4/1/05 8:38 AM 5 39 4/1/05 8:33 AM 4/1/05 8:37 AM 4 70 4/1/05 8:34 AM 4/1105 8:39 AM 5 13 4/1/05 2:20 PM 4/1/05 2:23 PM 3 5 4/1/05 4:40 PM 4/1/05 4:42 PM 2 3 4/1/05 4:54 PM 4/1/05 4:58 PM 4 5 4/1/05 5:22 PM 4/1/05 6:19 PM 57 132 NSTR Unplan ned LT 1 hr 04-2005.x1s Incident/Cause Description Remediation Taken Event Type Opening well following rig move. Slowed down and let import gas take the swing. Upset Opening well following rig move. Slowed down. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset HP A stepped to idle. Pt-2367 frozen. Put heater on transmitter to thaw out. Upset Flaring off of Teg contactor when bringing on well. Slowdown well beedown. Upset Flaring off of teg contactor when unloading well. Slowdown well bleedown. Upset Flaring off of teg contactor when unloading well. Slowdown well bleedown. Upset 5th stage recycle valve on HP A not working properly. Choked back on wells. Upset Flare HP1 HP1 HP7 HP1 HP1 HP1 HP2 LP LP HP1 HP2 HP1 HP1 HP1 HP2 LP HP1 HP1 HP1 HP1 1 of 6 Start Date/Time End Date/Time Minutes MCF 4/1/05 7:00 PM 4/1/05 7:15 PM 4/1/05 8:29 PM 4/1/05 8:39 PM 4/1/05 8:47 PM 4/1/05 8:51 PM 4/1/05 8:48 PM 4/1/05 8:51 PM 4/1/05 10:56 PM 4/1/05 11:00 PM 4/2/05 1:29 PM 4/2105 1:35 PM 4/2/05 2:48 PM 4/2/05 3:17 PM 4/3/05 9:02 AM 4/3/05 9:09 AM 4/4/05 8:59 PM 4/4/05 7:03 PM 4/5/05 1:43 PM 4/5/05 1:51 PM 4/5/05 1:54 PM 4/5/05 1:57 PM 4/5/05 1:57 PM 4/5/OS 2:01 PM 4/5/05 3:25 PM 4/5/05 3:33 PM 4/5/05 3:25 PM 4/5/05 3:35 PM 4/5/05 3:26 PM 4/5105 3:33 PM 4/5/05 3:43 PM 4/5/05 3:53 PM 4/5/05 3:44 PM 4/5/05 3:52 PM 4/5/05 4:34 PM 4/5/05 4:39 PM 4/5/05 4:34 PM 4/5/05 4:40 PM NSTR Unplanned LT 1 hr 04-2005.xis IncidenUCause Description Remediation Taken Event Type Flare 15 72 5th stage recycle valve on HP A not working properly. Choked back on wells. Upset HP1 10 176 5th stage recycle valve on HP A not working properly. Choked back on wells. Upset HP1 4 11 5th stage recycle valve on HP A not working properly. Shut the machine down and fixed the linkage. Upset HP7 3 3 Bleeding liquids from the 4th stage suction scrubber. Shut in the bleed Other LP 4 7 Bleeding liquids from the 4th stage suction scrubber. Shut in the bleed Other LP 6 12 Shutdown HP " B "compressor for maintenance. Flaring None, Normal shutdown sequence. Equipment Outage LP when machine blowdown valves opened. 29 239 Bleed down compressor for safe-out. Complete bleedown. Equipment Safe Out HP1 7 32 Test separator flare valve was not seated. Stroked valve. Other HP1 4 6 Test separator flare valve stuck open. Stroked valve and it re-seate Upset LP 8 40 HPB Step to Idle Reloaded HPB back up. Upset HP1 3 6 HPB Step to Idle Reloaded HPB back up. Upset HP1 4 6 HPB Step to Idle Reloaded HPB back up. Upset LP 8 129 HPB Step to Idle Reloaded HPB back up. Upset HP2 CZ~ 10 69 HPB Step to Idle Reloaded HPB back up. Upset HP1 7 ~0) PB St 17 ep to Idle H Reloaded HPB back up. Upset LP 10 61 HPB Step to Idle Reloaded HPB back up. Upset HP1 8 16~ 136 HPB St ep to Idle Reloaded HPB back up. Upset HP2 5 104 HPB Step to Idle Reloaded HPB back up. Upset HP2 8 ln~ 48 HPB St ep to Idle Reloaded HPB back up. Upset HP1 2 of 6 Start Date/Time End Date/Time Minutes MCF Incident/Cause Description Remediation Taken Event Type tr ~~ 4/5/05 4:35 PM 4/5/05 4:40 PM 5` 8 HPB Step to Idle Reloaded HPB back up. Upset 4/8/05 3:18 AM 4/6/O5 3:34 AM 16 220 Bumped HP Separator flare set point. Cut back on well to mitigate flaring. Upset 4/9/05 9:02 AM 4/9/05 9:17 AM 15 9 Taking NS-12 out of Test Sep. T777177 Upset 4/9/05 9:19 AM 4/9/05 9:30 AM 11 8 Taking NS-12 out of Test Sep. ??77777 Upset 4/9/05 10:46 AM 4/9/05 10:58 AM 12 6 Taking NS•12 out of Test Sep. 7??????? Upset 4/19/05 12:22 AM 4/19/05 12:53 AM 31 12 Worker stepped on bridal bleed valve to LP flare returned valve to normal position Other 4/20/05 7:10 PM 4/20/05 7:38 PM 28 12 Lowered test separator pressure to help unload NS16 None, normal unloading procedure. Commissioning following acid job. 4/23/05 12:29 AM 4/23/05 1:04 AM 35 317 HP B Compressor tripped off line. Started compressor back up. Upset ~a~ 4/23/05 12:29 AM 4123/05 12:35 AM 6 75 HP B Compressor tripped off line. Started compressor back up. Upset t ~ 4/23105 12:30 AM 4/23/05 12:36 AM Bi 8 HP B Compressor tripped off line. Started compressor back up. Upset 4/23/05 1:09 AM 4/23/05 1:17 AM 8 43 HP B Compressor tripped off line. Started compressor backup. Upset 4123105 1:18 AM 4/23/05 1:26 AM 8 14 HP B Compressor tripped off line. Started compressor back up. Upset 4/23105 10:26 AM 4/23/05 10:37 AM 11 3 HP B Compressor tripped off line. Started compressor back up. Upset 4/23/05 2:07 PM 4123/05 2:18 PM 11 164 HP B Compressor tripped off line. Started compressor back up. Upset 4/25/05 9:01 AM 4/25/05 9:48 AM 47 395 Flaring due to HP B shutting down due to fuel valve Shut-in wells to mitigate flare, restart comp ressor. Equipment Outage problem. 4/25/05 10:00 AM 4/25/05 10:10 AM 10 25 Flaring due to HP B shutting down due to fuel valve Shut-in wells to mitigate flare, restart compressor. Equipment Outage problem. 4/25/05 10:18 AM 4/25/05 10:30 AM 12 163 Flaring due to HP B shutting down due to fuel valve Shut-in wells to mitigate flare, restart comp ressor. Equipment Outage problem. 4/25/05 11:15 AM 4/25/05 12:07 PM 52 554 Flaring due to HP B shutting down due to fuel valve Shut-in wells to mitigate flare, restart comp ressor. Equipment Outage problem. 4/25/05 1:04 PM 4/25/05 1:11 PM 7 40 Flaring due to HP B shutting down due to fuel valve Shut-in wells to mitigate flare, restart comp ressor. Equipment Outage problem. NSTR Unplanned LT 1 hr 04-2005.xis Flare LP HP1 LP LP LP LP LP HP1 HP2 LP HP1 LP LP HP1 HP1 HP7 HP1 HP1 HP7 3 of 6 Start Date/Time End Date/Time 4/25/05 1:13 PM 4/25/05 1:21 PM 4/28/05 6:02 AM 4/28/05 6:07 AM 4/28/05 9:00 AM 4/28/05 9:03 AM 4/28/05 9:14 AM 4/28/05 9:17 AM Minutes MCF Incident/Cause Description Remediation Taken Event Type 8 14 Flaring due to HP B shutting down due to fuel valve Shut-in wells to mitigate flare, restart compressor. Equipment Outage problem. 5 1 Depressured water skimmer to facilitate pumping down of Pumped down Vent Scrubber and closed valve to Upset Glycol Reboiler Vent Scrubber. flare. 3 2 Depressured water skimmer to facilitate pumping down of Pumped down Vent Scrubber and closed valve to Upset Glycol Reboiler Vent Scrubber. flare. 3 2 HP A tripped offline due to high starter sump oil temperature Shut in two high GOR wells. Troubleshot the Equipment Outage 4/28/05 9:19 AM 4/28/05 9:25 AM 6 4/28/05 9:26 AM 4/28/05 9:32 AM 6 4/28/05 9:55 AM 4/28/05 10:16 AM 21 4/28/05 10:44 AM 4/28105 11:28 AM 44 4/28/05 11:30 AM 4/28/05 11:37 AM 4/28/05 11:40 AM 4/28/05 11:44 AM 4/28/05 11:50 AM 4/28/05 11:55 AM 4/28/05 12:02 PM 4/28/05 12:06 PM 4/28/05 12:21 PM 4/28108 12:29 PM 4/28/05 1:51 PM 4/28/05 2:35 PM 4128/05 2:36 PM 4/28/05 2:44 PM NSTR Unplanned LT 1 hr 04-2005.x1s 7 4 5 4 8 44 8 alarm. problem and restarted the compressor. 7 HP A tripped offline due to high starter sump oil temperature Shut in two high GOR wells. Troubleshot the Equipment Outage alarm. problem and restarted the compressor. 8 HP A tripped offline due to high starter sump oil temperature Shut in two high GOR wells. Troubleshot the Equipment Outage alarm. problem and restarted the compressor. 128 HP A trippetl offline due to high starter sump oil temperature Shut in two high GOR wells. Troubleshot the Equipment Outage alarm. problem and restarted the compressor. 248 HP A tripped offline due to high starter sump oil temperature Shut in two high GOR wells. Troubleshot the Equipment Outage alarm. problem and restarted the compressor. 34 HP A tripped offline due to high starter sump oil temperature Shut in two high GOR wells. Troubleshot the Equipment Outage alarm. problem and restarted the compressor. 6 Restarting HP A. Continued with startup sequence. HPA Start Gas 10 HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage third well. 10 HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage third well. 40 HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage third well. 482 HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage third well. 13 Restarting HP B. Continued with start sequence. HPB Start Gas Flare LP LP LP HP1 HP1 HP7 HP1 HP1 HP1 LP HP1 HP1 HP1 HP1 LP 4 of 6 Start Date/Time End Date/Time Minutes MCF 4/28/05 2:39 PM 4/28/05 2:58 PM 17 83 4128/05 2:59 PM 4/28/05 3:11 PM 12 62 4/28/05 3:12 PM 4/28/05 3:20 PM 8 30 4/28/05 3:33 PM 4/28/05. 3:40 PM 7 34 4/28/05 9:02 PM 4/28/05 9:34 PM 32 211 4/29/05 8:27 AM 4/29/05 9:08 AM 41 388 ~c~ 4/29/05 8:44 AM 4/29/05 8:51 AM 7 14 0 , 4/29/05 8:57 AM 4/29/05 9:00 AM 3 11 4/29/05 9:10 AM 4/29/05 9:18 AM 8 14 4/29/05 9:17 AM 4/29/05 9:22 AM 5 \4~ 9 4/29/05 9:28 AM 4/29/05 9:30 AM 4 6 4/29/05 8:17 PM 4/29/05 8:51 PM 34 453 4/29/05 7:34 PM 4/29/05 7:42 PM 8 13 4/29/05 8:18 PM 4/29/05 8:18 PM 2 2 4130/05 3:28 AM 4/30/05 3:30 AM 4 20 4/30/05 3:39 AM 4/30/05 3:42 AM 4/30/05 7:04 AM 4/30/05 7:10 AM 4/30/05 8:32 AM 4/30/05 8:35 AM 4/30/05 8:42 AM 4/30/05 8:49 AM NSTR Unplanned LT 1 hr 04-2005.x1s IncidenUCause Description Remediation Taken Event Type Flare HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage HP1 third well. HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage HP1 third well. HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage HP1 third well. HB B tripped offline due to fuel system problems. Shut in two high GOR wells and pinched back a Equipment Outage HP1 third well. Test separator flare valve off seat, while bringing on wells. Stroke flare valve to reseal. Other HP7 OSD, LAHH in water skimmer oil bucket. S/1 wells, restart plant. Equipment Outage HP1 OSD, LAHH in water skimmer oil bucket. S/1 wells, restart plant. Equipment Outage LP OSD, LAHH in water skimmer oil bucket. S/l wells, restart plant. Equipment Outage LP OSD, LAHH in water skimmer oil bucket. S/I wells, restart plant. Equipment Outage LP OSD, LAHH in water skimmer oil bucket. S/I wells, restart plant. Equipment Outage HP7 OSD, LAHH in water skimmer oil bucket. S/l wells, restart plant. Equipment Outage LP HPB S/D. Cause unknown. Choked back wells for flare mitigation, restart Equipment Outage HP7 compressor. Bringing on wells, flaring off LP separator. Slowdown well bleedown. Equipment Outage LP Flaring off HP Separator prior to compressor restart. Start HPB compressor. Equipment Outage HP1 Flaring off of test separator while unloading well. 3 5 Flaring off of test separator while unloading well 8 2 Upset in TEG system. 4 1 Upset in TEG system. 7 2 Upset in TEG system. Slow bleedown of well. Equipment Outage Slow bleedown of well. Upset Made adjustment to burner controls. Upset Made adjustment to burner controls. Upset Made adjustment to burner controls. Upset HP1 HP1 LP LP LP 5 of 6 Start Date/Time End Date/Time Minutes MCF 4/30/05 8:51 AM 4/30/05 9:05 AM 14 6 4/30/05 9:29 AM 4/30/05 9:59 AM 30 13 4/30/05 11:06 AM 4/30/05 11:21 AM 15 2 4/30/05 12:15 PM 4/30/05 12:49 PM 34 10 4/30/05 1:32 PM 4/30/05 1:41 PM 9 5 4/30/05 2:03 PM 4/30/05 2:10 PM 7 4 4/30/05 3:23 PM 4/30/05 3:57 PM 34 335 4/30/05 3:25 PM 4/30/05 3:47 PM 22 13 4/30/05 4:03 PM 4/30/05 4:11 PM 8 42 4/30/05 4:03 PM 4/30/05 4:07 PM 4 2 4/30/05 4:12 PM 4/30/05 4:20 PM 8 14 4/30/05 6:33 PM 4/30/05 6:37 PM 4 9 Group Total: 7,067 IncidenUCause Description Remediation Taken Event Type Upset in TEG system. Made adjustment to burner controls. Upset Upset in TEG system. Made adjustment to burner controls. Upset Upset in TEG system. Made adjustment to burner controls. Upset Upset in TEG system. Made adjustment to burner controls. Upset Upset in TEG system. Made adjustment to burner controls. Upset Upset in TEG system. Made adjustment to burner controls. Upset HP B tripped off line, due to fuel control trouble. Winged in NS-08, NS-09 and NS-15. Troubleshoot Upset fuel control problems. Upset in TEG system. Made adjustment to burner controls. Upset HP B tripped offline due to fuel valve problems. Tripped NS-09, NS-15, NS-O8. Troubleshooting Upset fuel valve problems. Upset in TEG system. Made adjustment to burner controls. Upset HP B starter gas. Continued with start sequence. Upset Bumped flare setpoint off of HP Separator, while bring ing on None, Condition corrected itself before corrective Upset wells following HPB restart. action could be taken. Flare LP LP LP LP LP LP HP1 LP HP1 LP LP HP1 NSTR Unplanned LT 1 hr 04-2005.x1s 6 of 6 RE: Northstar Gas Disposition Subject: RE: Northstar has 1_)i~position From: "Fiedler, Anne I~9" ~-Fir~IIcAM@R['.corli> Uatc: Wed, 08 Jun 2005 1 l :?7:=} I -OSUO To: Stephen Mcn~ains °stevemcrn~iinsra;adr»in.state.tik.us> Steve, As requested, here are the details of the unplanned < 1 hour flare events at Northstar in April. The total volume of these unplanned < 1 hour events is 7067 mscf. Note there are 3 flare tips at Northstar - LP, HP1 and HP2. Each one is metered separately so when you see. what looks to be overlapping times for different events, check the column on the far right and you will see that it is because different flare tips are flaring. Please call with any questions. Anne Fiedler Volume Accounting BP Exploration (Alaska) Inc. 907/564-5826 907/564-4094 (fax) fiedleam~~bp.com -----Original Message----- From: Stephen Mcmains [mailto:steve mcmains~wadmin.state.ak.us] Sent: Thursday, June 02, 2005 12:45 PM To: Fiedler, Anne M Subject: Northstar Gas Disposition Ann, Jim Regg is looking at Northstar gas disposition and would like to see the unplanned < 1 Hr flare events with a gas volume of 9038 mcf of gas. The report shows 1971 mcf of the planned events but no unplanned events are listed. He needs these unplanned events to analysis the < 1 Hr events. Could you provide them to me by June 10, 2005 thanks. Steve Content-Description: NSTR Unplanned LT 1 hr 04-2005.ZIP NSTR Unplanned LT 1 hr 04-2005.ZIP Content-Type: application/x-zip-compressed Content-Encoding: base64 1_of 1 6/8/2005 11:38 AM ~~~u~~ ~~.~~ ~ ~-~{ ,,~~1~`e~ I Vorthstar Flaring - ARril 3005 Regg; 7/21/05 Flared Volumes Be in Date Event Descri tion Cate o <= 1 hr Mc > 1 hr Mc 4/1/2005 HP-A frozen ressure transmitter Safet 660 HP-A 5th sta a rec cle valve Safet 391 4/17/2005 Unload NS-19; ost-acid flowbk Safet 108 4/18/2005 3rd sta a dischar a flan a leak Safe 1106 1717 4/19-20/2005 Unload NS-18; ost-acid flowbk Safe 89 4/23/2005 HP-B tri ed Safe 624 4/25/2005 HP-B fuel valve roblems Safe 1191 4/28/2005 ~-A tri ed; hi h sum tem Safe 427 HP-B fuel roblems Safe 764 4/30/2005 TEG s stem u set Safe 60 Totals 4369 1717 BP "~ 1 hr" from 10-422 (Mc 8 BP Repotted "> 1 hr" from 1Q-422 cf) '~7 C Iksposition A nt Af?GCG Adjusted Flare Volumc "<=1 hr" (Nlcf) 4€s69 AGCC Ad`ustod Flhree Volume "> l.hr" cfj STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Ma -2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of S ld 0 Total Volume. o 6. Pool Name Pool Code Percent i R 11 571 402 Northstar 590100 100% 7. e njected , , 6 105 8. Flared or vented 1 hour or less , 1 h 12 795 our (see instr.) 9. Flared or vented more than , l 0 10. Pi ot and Purge i i R k d f 0 ons (speci emar s) 11. Use for lease operat y n 12 O h i i ~ Official Use only . t er (see nstruct ons) Authorization >1 hr: Satet MCF MS 1 302 11 590 y I Z~ ~~ 13. TOTAL VOLUME (ITE 6- 2) , , L Use MCF 4 NGL i l ease 1 . va ent Gas Equ ns ati n C MCF t P h d 3,197,467 erv o o urc gas 5. ase Waste: MCF 16. Transferred from: ~ ~~~n~S i # T f E ommi sinner Date xpress as a negat ve ) 17. rans erred to: ( 1s. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 600,397, pilot purge 2759, injection 2,594,311 I hereby certify that the foregoing is tr a and correct to the best of my knowledge. Note: All volumes must be S(gnature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date ~~ t r't 2 AA 2 . ~f'.>f-~ Form 10-422 Rev. 1/2004 Submit in Duplicate Start Date/Time End Date/Time Minutes MCF IncidenUCause Description Remediation Taken Planned LessThanlHour Group Total: 1,879 Planned GreaterThanl Hour -~ ~ 5/11/05 2:33 AM 5/11/05 3:56 AM 83 227 HP-B fuel gas mapping ~/ 5/22/05 7:50 PM 5/22/05 9:58 PM 128 530 Flaring off test separator...lowerftare setpoint, attempting Return flare setpoint to normal once well to unload well. unloads. L S 5/25105 9:21 PM 5/25/05 11:45 PM 144 311 Operate test separator at low pressure to flare to unload None necessary NS-28 following scale inhibition treatment Group Total: 1,069 Unplanned LessThanlHour Group Total: 4,226 Unplanned GreaterThanl Hour --51//05 2:36 AM 5f7/05 4:28 AM 112 238 Production restart. 577/05 2:51 AM 5!7/05 4:27 AM 96 173 Production restart. ~5l7/05 10:56 PM 5/8/05 5:12 AM 376 3,123 HP B trip to idle- could not restart. 5!7/05 10:57 PM 5/8/05 3:28 AM 271 1,660 HP B trip to idle. LP Compressor shutdown. 5/8/05 3:29 AM 5/8/05 12:47 PM 558 2,196 Start attempts on LP compressor- Instrumentation reset control logic. 5/8/05 5:33 AM 5/8/05 9:37 AM 244 677 LP Compressor restart attempts ongoing. /05 12 \ / 194 969 LP t rt d HP A :54 PM 5/8/05 9:40 AM 5 8 an purge . res a 5/29/05 10:17 AM 5/29/05 1:21 PM 184 612 LP Compressor shutdown due to loose wire. Shut-in wells. `"` 5/29/05 10:17 AM 5/29/05 11:19 AM 62 514 HPA tripped offline, Shut-in wells to mitigate flare. ~l - 5/30/05 3:39 PM 5/30/05 5:41 PM 122 441 Restart LP compressor None necessary NSTR Flare Report 05-2005 FINAL.xIs Event Type Flare Other Other Other Upset Upset Equipment Outage Equipment Outage Equipment Outage Equipment Outage Equipment Outage Upset Equipment Outage LP Purge Gas HP1 HP1 HP1 LP HP1 HP7 LP LP HP1 HP1 LP HP1 LP 1 of 2 Start Date/Time End DatelTime 5/30/05 3:54 PM 5/30/05 6:09 PM Group Total: Report Total: Minutes MCF 135 1,122 11,726 18,900 IncidenUCause Description Flaring bringing plant up after OSD. Remediation Taken Event Type None necessary Plant Startup Flare HPi NSTR Flare Report 05-2005 FINAL.xIs 2 of 2 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Jun-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of l S 0 Total Volume. 6. o d Pool Name Pool Code Percent 7 R i d 10 739 236 Northstar 590100 100% . njecte e , , l Fl d t d 1 h 506 3 our or are or ven e ess 8. , Fl t th 1 h i t 9 d d 752 1 are or ven more an our (see r.) . e ns , 10 Pil t d P 0 an urge . o l ti 11 U d f if i R k 0 ease opera ons (spec . se or y n emar s) 12 h i i O ~ -` Official Use Only . t er (see nstruct ons) Authorization >1 hr: f t S - MCF 1 OTAL VOL ME ITEMS 6 12 10 744 494 y a e ~ i r SZ-- ( - ) 3. T U , , Lease Use MCF 1 NGL G E i l qu va ent 4. as ti C MCF h 15 P d 2,630,306 onserva on urc . ase gas Wast : MCF 16. Transferred from: e 7 ( r l ~G~~~~ (~.~v O ~ T ~ ~ (~`~ 17 T f d t E i # Commissioner Date . rans erre xpress as a negat ve ) o: ( 1a. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 579,318, pilot purge 2670, injection 2,048,318 I hereby certify that the foregoing is true and correct to the best of my knowledge. Note: All volumes must be Signature ~~~. ~~(,,(~a~,~.L.~, ~'1~ Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psis and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date ~ (I Zed 5 A th rit 20 AA 25.2 5. ._1'~ ~- Form 10-422 Rev. 1/2004 Submit in Duplicate Start Date rime End Date/Time Minutes MCF IncidenUCause Description Planned LessThanlHour Group Total: 1,480 Planned GreaterThanl Hour 6121/05 2:17 AM 6/21/05 5:35 AM 198 384 HPA start, purge on machine. 6/21/05 2:32 AM 6/21/05 5:35 AM 183 707 HPA start, purge on machine. Group Total: 1,091 Unplanned LessThanlHour Group Total: 2,026 Unplanned GreaterThanlHour / 6/7/05 3:14 PM 6/7/05 4:41 PM 87 197 LP Comp. 3rd stg cond. pump S/D. V 6/24/05 7:16 PM 6/24/05 8:37 PM 1 81 464 BESD from power failure. Group Total: 661 Report Total: 5,258' NSTR Fiare Report 06-2005 FINAL.xIs Remediation Taken Complete purge, start compressor. Purge LP Compressor, start machine. logic repaired Shutdown wells, restart plant. Event Type Flare Plant Startup HP1 Plant Startup LP Upset LP Equipment Outage HP1 7/11/2005 8:31 AM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Jul-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 0 Total Volume. 6. Sold Pool Name Pool Code Percent 11 666 555 Northstar 590100 100% 7. Reinjected , , 2 779 ~~ 8. Flared or vented 1 hour or less , 2 572 9. Flared or vented more than 1 hour (see instr.) , 0 10. Pilot and Purge 0 11. Used for lease operations (specify in Remarks) i 0 Official Use Only 12. Other (see instruct ons) Authorization >1 hr: Safet c7 ~ Z MCF 11 671 906 y J t 13. TOTAL VOLUME (ITEMS B-12) , , Lease Use MCF NGL G E i l 14. as qu va ent Conservation MCF P h 2,926,831 urc ased gas 15. Waste: MCF 16. Transferred from: ~` / ~ / ~~ ~ J/~~ ~~ `{-'fj ~[• 17 f d E i # T Commissioner Date . rans erre to: ( xpress as a negat ve ) 1s. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 662,527, pilot purge 27§9, injection 2,261,545 I hereby certify that the f egoing is true and correct tot best of my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psis ~} and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date -~_" ~ th ri 2 AA .2 ~l~~`~ Form 10-422 Rev. 1/2004 Submit in Duplicate Start Date/Time End Date/Time Minutes MCF IncidenUCause Description Planned LessThanlHour Group Total: 1,015 Planned GreaterThanl Hour Group Total: 0 Unplanned LessThanlHour Group Total: 1,764 Unplanned GreaterThanl Hour 7/2/05 7:51 AM 7/2/05 10:21 AM 150 2,272 Cascade control system 7/2/05 8:16 AM 7/2/05 10:18 AM 122 300 Cascade control system Group Total: 2,572 Report Total 5,351 Remediation Taken Event Type Flare Cascade system now out of service Commissioning HPt Cascade system now out of service Commissioning LP NSTR Flare Report 07-2005 FINAL.xIs 8/8/2005 10:48 AM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Au -2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 0 Total Volume. 6. Sold Pool Name Pool Code Percent 11 53 Northstar 590100 100% 7. Reinjected ,577,7 l 1 879 8. Flared or vented 1 hour or ess , 1 h 2 012 ~ our (see instr.) 9. Flared or vented more than , 0 10. Pilot and Purge i if i f 0 ons (spec y n Remarks) 11. Used or lease operat 0 Official Use Only 12. Other (see instructions) Authorization >1 hr: Safet Z MCF 644 11 581 y l ~ I 13. TOTAL VOLUME (ITEMS 6-12) , , Lease Use MCF 14. NGL Gas Equivalent Conservation MCF 2,863,139 15. Purchased gas Waste: MCF 16. Transferred from: r~-~ -~ ommissi er Date 17. Transferred to: (Express as a negative #) 18. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 656,858, pilot purge 275;}, injection 2,203,522 I hereby certify that the foregoing is true a correct o the best of my knowledge. Note: All volumes must be Signature Title Mana er, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date ~ ~~~ A th it AA J~~ Form 10-422 Rev. 1/2004 Submit in Duplicate Northstar Gas Flaring Incident Report 8/1/2005 - 8/31/2005 Start Date /Time End Date /Time Minutes Planned Less Than 1 Hour Group Total Planned Greater Than 1 Hour 08/01/2005 14:49 08/01/2005 18:48 117.00 ,,;~ 08/10/2005 02:03 08/10/2005 03:44 101.00 08/30/2005 01:56 08/30/2005 03:10 74.00 08/30/2005 03:13 08/30/2005 07:17 244.00 Group Total Unplanned Less Than 1 Hour Group Total Unplanned Greater Than 1 Hour j OS/zs/zoos 17:17 oa/2s/2005 18:36 7s.oo Group Total Report Total NSTR Flare Report 08-2005 FINAL.xIs MCF Incident Cause /Description Remediation Taken 933 68 WELLWORK NS-21 UNLOADING WELL AFTER PERF JOB. 40 Depressure NS-5 to test seperator to BOL Line-up to 3rd stage ASAP 411 Vent plant for shut down work. 675 Vent plant for shut down work. 1,195 Event Type Ftare Well Outage HPt Other LP Equipment Safe Out HP1 Equipment Safe Out HP1 946 817 817 3,891 HP-A shut down Restart HP-A ASP Upset HP1 9/8/2005 9:27 AM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Se -2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of Total Volume. 6. Sold 0 Pool Name Pool Code Percent 471 184 9 Northstar 590100 100% 7. Reinjected , , 3 968 8. Flared or vented 1 hour or less , 391 9. Flared or vented more than 1 hour (see instr.) 6, 0 '~ 10. Pilot and Purge 0 11. Used for lease operations (specify in Remarks) l~fticial Use Only 12. Other (see instructions) 0 Authorization >1 hr: Safet r MCF y ~t fi (' 13. TOTAL VOLUME (ITEMS 6-12) 9,481,543 Lease Use MCF 14. NGL Gas Equivalent Conservation MCF 2,602,660 15. Purchased gas Waste: MCF 16. Transferred from: ~ ,~-~~~ Q~ mm a Date 17. Transferred to: (Express as a negative #) 1a. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 572,541, pilot purge 2670, injection 2,027,449 I hereby certify that the foregoing is true nd c r t to the best of my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia _ ?,-ter and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (907)564-5028 Date 6 ~j Ci A th rlt 2 25.2 ~n Form 10-422 Rev. 1/2004 Submit in Duplicate Northstar Gas Flaring Incident Report 9/1 /2005 - 9/30/2005 Start Date /Time End Date /Time Minutes Planned Less Than 1 Hour Group Total Planned Greater Than 1 Hour 09/06/2005 06:38 09/06/2005 10:12 214.00 09/06/2005 07:37 09/06/2005 10:18 161.00 Group Total Unplanned Less Than 1 Hour Group Total Unplanned Greater Than 1 Hour 09/06/2005 06:28 09/06/2005 07:31 63.00 09/07/2005 12:19 09/07/2005 13:59 100.00 09/07/2005 12:20 09/07/2005 14:12 112.00 09/14/2005 18:09 09/14/2005 19:16 67.00 09/22/2005 14:00 09/22/2005 15:48 108.00 09/22/2005 14:00 09/22/2005 15:57 117.00 Group Total Report Total MCF Incident Cause /Description Remediation Taken 805 699 LP start-up 335 LP start-up 1,034 3,163 Event Type Flare LP Purge Gas LP LP Purge Gas HP1 90 Depressurize test header repairs. Equipment Safe Out HP1 416 LP Compressor shutdown on faulty temperature Shut-in wells to mitigate flaring. Upset LP switch 344 LP Compressor shutdown on faulty temperature Shut-in wells to mitigate flaring. Upset HP1 switch 203 LP suction pressure control problem caused flaring Troubleshot and corrected suction control Upset LP off of the Crude Stabilizer. problem 2,849 HPB fuel gas valve problems lose wires. Re-tightened feed back wiring Equipment Outage HP2 1,454 HPB fuel gas valve problems lose wires. Re-tightened feed back wiring Equipment Outage HP1 5,357 I ~ 10,359 NSTR Flare Report Sep 2005 FINAL.xIs 10/11/2005 4:19 PM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Oct-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 0 Total Volume. 6. Sold Pool Name Pool Code Percent 46 Northstar 590100 100% 7. Reinjected 12,709,7 167 6 8. Flared or vented 1 hour or less , 10 282 9. Flared or vented more than 1 hour (see instr.) , 10. Pilot and Purge 0 11. Used for lease operations (specify in Remarks) 0 Official Use Oily 12. Other (see instructions) 0 Authorization >1 hr: Safet MC:F 2 26 1 5 y I Of ~ w Z 13. TOTAL VOLUME (ITEMS 6-12) 1 ,7 , 9 lease Use MCF 14. NGL Gas Equivalent Conservation MCF 2,696,125 15. Purchased gas Waste: MCF 16. Transferred from: /~ J~~~~ ( ~! Date Co ss ner 17. Transferred to: (Express as a negative #) 1a. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 667,911, pilot purge 2759, injection 2,025,455 I hereby certify that the foregoing is true d corre to the best of my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia and to a temperature of 60o F. Printed Name Bernard . Ha'n Phone (907)564-5028 Date ~'~ A th rit 25.235. JXl~<!`- Form 10-422 Rev. 1/2004 Submit in Duplicate Northstar Gas Flaring Incident Report 10/1/2005 -10/31/2005 Start Date /Time End Date /Time Minutes MCF Incident Cause /Description Remediation Taken Event Type Flare Planned Less Than 1 Hour Group Total 486 Planned Greater Than 1 Hour 10/09/2005 19:44 10/09/2005 20:55 71.00 90 Unloading NS-21 into the test separator N/A Well Outage HP1 10/09/2005 21:40 10/09/2005 23:35 115.00 343 Unloading NS-21 into the test separator N/A Well Outage HP1 Group Total 432 Unplanned Less Than 1 Hour Group Total 5,881 Unplanned Greater Than 1 Hour 10/05/2005 18:09 10/05/2005 20:04 115.00 478 LP Compressor s/d from 5th stg inlet TAHH. S/i wells to mitigate flare.. restart compressor. Equipment Outage LP 10/05/2005 19:16 10/05/2005 22:51 215.00 1,247 LP Compressor s/d from 5th stg inlet TAHH. S/i wells to mitigate flare..restart compressor. Equipment Outage HPi 10/19/2005 19:31 10/20/2005 00:03 272.00 611 LP Compressor/Plant S/D Repair HP A and restart LP Upset LP 10/19/2005 19:31 10/20/2005 00:03 272.00 2,685 HP A /LP /Plant S/D Repair HP A, Repair start logic on LP Upset HP1 10/20/2005 14:00 10/20/2005 15:06 66.00 1,947 HP A fuel vent valve signal fail. Repair and check shutdown parameters in Upset HP2 10/20/2005 14:00 10/20/2005 15:02 62.00 1,125 HP A S/D. Upset HP1 10/28/2005 06:35 10/28/2005 07:59 84.00 891 HP B shutdown. Equipment Outage HP1 10/31/2005 05:22 10/31/2005 06:27 65.00 36 Glycol system upset Stabilize Glycol system Upset LP 10/31/2005 06:30 10/31/2005 23:59 1,050.00 715 Glycol system upset Stabilize glycol system. Upset LP 10/31/2005 22:44 10/31/2005 23:59 76.00 115 LP compressor upset. Cut rates and trouble shoot. Upset HPt Group Total 9,850 Report Total 18,449 NSTR Flare Rpt Oct 2005 FINAL.xIs 11/9/2005 11:19 AM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Nov-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 0 Total Volume. 6. Sold Pool Name Pool Code Percent 402 768 1 Northstar 590100 100% 7. Reinjected , 3, 620 5 8. Flared or vented 1 hour or less , h 1 h i 26 267 nstr.) our (see 9. Flared or vented more t an , 0 10. Pilot and Purge / if 0 y in Remarks) 11. Used for lease operations (spec 0 Official Use Only 12. Other (see instructions) Authorization >1 hr: Safet MGF 13 434 655 y ~/ 13. TOTAL VOLUME (ITEMS 6-12) , , Lease Use MCF 14. NGL Gas Equivalent Conse ti n MCF 2,938,329 rva o 15. Purchased gas Waste: MCF 16. Transferred from: ~"~~~~ d # f ti E Commissione Date ) xpress as a nega ve 17. Trans erred to: ( 1s. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 667,674, pilot purge 267 ,Injection 2,267,985. ~~C~~ ~ JJJ~~ I hereby certify that the foregoing is true an rr the best of my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psis and to a temperature of 60o F. Printed Name Bernard W. Ha'n Phone (so7)5s4-5o2e Date ~ .. ~ h rit 2 AAC25.235. ~g~ Form 10-422 Rev. 1/2004 Submit in Duplicate Northstar Gas Flaring Incident Report 11 /1 /2005 - 11 /30/2005 Start Date /Time End Date /Time Minutes MCF Incident Cause /Description Remediation Taken Event Type Flare Planned less Than 1 Hour Group Total 226 Unplanned Less Than 1 Hour Group Total 5,394 Unplanned Greater Than 1 Hour 11/01/2005 00:00 11/01/2005 08:19 499.00 340 Glycol system upset Stabilize glycol system. Upset LP 11/04/2005 19:01 11/04/2005 21:27 146.00 541 tried to unload NS-16 shut in NS-16 Upset LP 11/05/2005 15:37 11/05/2005 18:35 178.00 289 Glycol reboiler venting excess vapors during well changes. Stablized Glycol System Upset LP 11/06/2005 05:29 11/06/2005 07:28 119.00 128 Glycol System upset Stablized Glycol System Upset LP 11/06/2005 12:09 11/06/2005 13:14 65.00 559 Ambient temp fluctuating, too much produced gas in system S/I NS-24 Upset HP1 11/06/2005 15:10 11/06/2005 16:33 83.00 78 Ambient temp fluctuating, too much produced gas in system S/I NS-24 Upset LP 11/07/2005 19:47 11/08/2005 03:23 456.00 295 Glycol System upset Stablized Glycol System Upset LP 11/08/2005 03:26 11/08/2005 07:43 257.00 168 Glycol System upset Stablized Glycol System Upset LP 11/08/2005 08:11 11/08/2005 14:03 352.00 291 Glycol System upset Stablized Glycol System Upset LP 11/08/2005 14:06 11/08/2005 16:19 133.00 120 Glycol System upset Stablized Glycol System Upset LP 11/08/2005 16:22 11/09/2005 08:20 958.00 613 Glycol System upset Stablized Glycol System Upset LP 11/09/2005 15:51 11/09/2005 19:24 213.00 144 Glycol System upset Stablized Glycol System Upset LP 11/09/2005 19:32 11/10/2005 00:07 275.00 195 Glycol System Stablized Glycol System Upset LP 11/10/2005 00:14 11/10/2005 07:41 447.00 306 Glycol System Stablized Glycol System Upset LP 11/10/2005 07:52 11/10/2005 16:50 538.00 370 Glycol System Stablized Glycol System Upset LP 11/10/2005 16:55 11/10/2005 18:13 78.00 56 Glycol System Stablized Glycol System Upset LP 11/10/2005 18:22 11/10/2005 22:34 252.00 180 Glycol System Stablized Glycol System Upset LP 11/10/2005 22:37 11/11/2005 01:02 145.00 98 Glycol system venting in excess of 0.5 MMSCFD. Engineering working problem. Upset LP 11/1 t/2005 01:19 11/11/2005 03:59 160.00 107 Glycol system venting in excess of 0.5 MMSCFD. Engineering working problem. Upset LP 11/11/2005 04:05 11/11/2005 05:09 64.00 35 Glycol system venting in excess of 0.5 MMSCFD. Engineering working problem. Upset LP 11/11/2005 05:15 11/11/2005 20:42 927.00 740 Glycol system venting in excess of 0.5 MMSCFD. Engineering working problem. Upset LP 11/12/2005 04:44 11/12/2005 07:34 170.00 73 Glycol System upset Engineering working problem Upset LP 11/12/2005 07:59 11/12!2005 09:03 64.00 38 Glycol System upset Engineering working problem Upset LP 11/12/2005 10:13 11/12/2005 13:32 199.00 118 Glycol System upset Engineering working problem Upset LP 11/13/2005 00:59 11/13/2005 02:04 65.00 24 Glycol System upset Engineering working problem Upset LP 11/13/2005 03:32 11/13/2005 06:06 154.00 68 Glycol System upset Engineering working problem Upset LP 11/13/2005 12:43 11/13/2005 15:33 170.00 89 Glycol System upset Engineering working problem Upset LP 11/13/2005 15:35 11/13/2005 17:49 134.00 86 Glycol System upset Engineering working problem Upset LP 11/13/2005 21:09 11/13/2005 22:22 73.00 69 Glycol System upset Engineering working problem Upset LP 11/14/2005 02:40 11/14/2005 05:03 143.00 89 Glycol System upset Engineering working problem Upset LP 11/14/2005 06:40 11/14/2005 12:24 344.00 276 Glycol System upset Engineering working problem Upset LP 11!14/2005 12:47 11/15/2005 05:41 1,014.00 855 Glycol System upset Engineering working problem Upset LP 11/15/2005 06:40 11/15/2005 07:45 65.00 27 Glycol System upset Engineering working problem Upset LP 11/15/2005 08:19 11/15/2005 12:21 242.00 143 Glycol System upset Engineering working problem Upset LP 11/15/2005 13:50 11/15/2005 15:49 119.00 63 Glycol System upset Engineering working problem Upset LP 11/15/2005 15:51 11/15/2005 23:00 429.00 311 Glycol System upset Engineering working problem Upset LP 11/15/2005 23:15 11/16/2005 01:17 122.00 84 TEG system upset Engineering working on issue. Upset LP 11/16/2005 05:29 11/16/2005 06:53 84.00 50 TEG system upset. Engineering working on solution. Upset LP 11/16/2005 11:17 11/17/2005 03:20 963.00 734 TEG system upset Engineering working on issue. Upset LP NSTR Flare Reprt Nov 2005 FINAL.xIs 1 of 2 12/9/2005 8:14 AM Northstar Gas Flaring Incident Report 11 /1 /2005 - 11 /30/2005 Start Date /Time End Date /Time Minutes MCF Incident Cause /Description Remediatton Taken Event Type Flare 11/17/2005 03:25 11/17/2005 05:20 115.00 91 TEG system upset Engineering working on issue. Upset LP 11/17/2005 09:41 11/17/2005 11:35 114.00 68 TEG system upset Engineering working on issue. Upset LP 11/17/2005 11:42 11/17/2005 15:32 230.00 219 TEG system upset Engineering working on issue. Upset LP 11/17/2005 16:47 11/17/2005 18:01 74.00 89 Plant power failure and besd ongoing. All wells shut in Equipment Outage HP1 11/17/2005 21:24 11/18/2005 06:09 525.00 2,405 Plant Start-up None necessary LP Purge Gas LP 11/17!2005 21:38 11/18/2005 06:17 519.00 995 Plant shut-down Repair and restart plant Equipment Outage HP1 11/19/2005 12:33 11/19/2005 15:58 205.00 2,954 HP-A shut down Restart HP-A Equipment Outage HP2 11/19/2005 12:33 11/19/2005 15:16 163.00 351 HP-A shut down Restart HP•A Equipment Outage HP1 11/20/2005 00:33 11/20/2005 02:51 138.00 76 Glycol system upset Engineering working this issue Upset LP 11/20/2005 05:19 11/20/2005 06:41 82.00 39 Glycol system upset Engineering working this issue Upset LP 11/21/2005 01:48 11!21/2005 03:01 73.00 73 TEG System Engineering working this issue Upset LP 11/21/2005 03:06 11/21/2005 04:07 61.00 38 TEG System Engineering working this issue Upset LP 11/21/2005 04:25 11/21/2005 05:43 78.00 46 TEG System Engineering working this issue Upset LP 11/21/2005 05:45 11/21/2005 06:54 69.00 38 TEG System Engineering working this issue Upset LP 11/21/2005 07:05 11/21/2005 08:19 74.00 41 TEG System Engineering working this issue Upset LP 11!21/2005 08:23 11/21/2005 11:29 186.00 114 TEG System Engineering working this issue Upset LP 11/21/2005 17:37 11/23/2005 22:10 3,153.00 2,389 TEG System Engineering working this issue Upset LP 11/23/2005 22:19 11!23/2005 23:41 82.00 59 TEG System Engineering working this issue Upset LP 11/23/2005 23:48 11/24/2005 07:12 444.00 302 TEG System Engineering working this issue. Upset LP 11/24/2005 07:17 11/24/2005 13:31 374.00 235 TEG System Engineering working this issue. Upset LP 11/24/2005 13:50 11/24/2005 20:04 374.00 237 TEG System Engineering working this issue Upset LP 11/24/2005 20:29 11/25/2005 03:26 417.00 319 TEG System Engineering working issue. Upset LP 11!25/2005 03:33 11/25/2005 06:12 159.00 117 TEG System Engineering working issue Upset LP 11/25/2005 08:04 11/25/2005 16:13 489.00 363 TEG System Engineering working issue. Upset LP 11/25/2005 16:25 11/26/2005 14:24 1,319.00 985 TEG System Engineering working issue. Upset LP 11/26/2005 15:56 11/27/2005 03:01 665.00 391 TEG System Engineering working issue. Upset LP 11/27/2005 04:35 11/27/2005 10:12 337.00 223 TEG System Engineering working issue. Upset LP 11/27/2005 11:41 11/28/2005 02:04 863.00 585 Teg System Engineering working issue. Upset LP 11/28/2005 02:18 11!28/2005 04:38 140.00 85 Teg System Engineering working issue. Upset LP 11/28/2005 04:40 11/28/2005 08:05 205.00 140 Teg System Engineering working issue. Upset LP 11/28/2005 08:11 11/29/2005 03:52 1,181.00 898 Teg System Engineering working issue. Upset LP 11/29/2005 03:55 11/29/2005 16:34 759.00 741 Teg System Engineering working issue. Upset LP 11/29/2005 16:41 11/29/2005 22:43 362.00 260 Teg System Engineering working issue. Upset LP 11/29/2005 22:57 11/30/2005 17:29 1,112.00 1,043 Flaring from LP Separator due to feed gas coolers freezing Heated up feed gas coolers. Upset LP off and restricting flow. 11/30/2005 20:29 11/30/2005 22:02 93.00 302 Flaring from LP Separator due to feed gas coolers freezing Heated up feed gas coolers. Upset LP off and restricting flow. 11/30/2005 22:26 12/01/2005 00:02 96.00 103 Flaring from LP Separator due to feed gas coolers freezing Heated up feed gas coolers Upset LP off and restricting flow. Group Total 28,267 Report Total 31,887 Additional information regarding the Glycol/TEG events: Excessive NGL carryover into the glycol system caused the upsets. The level on NGL carryover was greater than that which occurs during normal operations and resulted in a greater than normal amount of gas to be flared from the vessels. The operating temperature of the feed gas cooler has been increased to reduce to amount of NGL carryover which will result in reduced flared gas volumes. NSTR Flare Reprt Nov 2005 FINAL.xIs 2 of 2 12/9/2005 8:14 AM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 1. Facility Number 0290000025 2. Facility Name N1 3. Field Northstar 4. Operator BP 5. Month/Year of Disposition Dec-2005 Disposition Volume MCF 20. For production from multiple pools, list contribution of each pool as a percent of 0 Total Volume. 6. Sold Pool Name Pool Code Percent 2 5 105 Northstar 590100 100% 7. Reinjected ,7 1 9, ~ 8. Flared or vented 1 hour or less 7,161 201 30 9. Flared or vented more than 1 hour (see instr.) , 10. Pilot and Purge 0 0 11. Used for lease operations (specify in Remarks) 0 Offici2l Gse Orly 12. Other (see instructions) authorization >1 hr: Saf t ~ MCF 12 796 467 y e ~~ ~ 13. TOTAL VOLUME (ITEMS 6-12) , , Lease Use MCF 14. NGL Gas Equivalent Conservation MCF 2,559,449 15. Purchased gas Waste: MCF 16. Transferred from: ~ f ~~ /~D~ ( / Commissioner Date 17. Transferred to: (Express as a negative #) 16. Remarks: Blocks 6 - 13 include only produced gas from Northstar (i.e. no purchased gas). Gas purchased from PBU was used as follows (all in mscf): fuel gas 670,066, pilot purge 2 j59, injection 1,886,624. I hereby certify that the foregoing is true nd o ct to the best df my knowledge. Note: All volumes must be Signature Title Manager, Production Taxes and Royalties Alaska corrected to pressure of 14.65 psia and to a temperature of 60o F. Printed Name Bernard W. Han Phone (907)564-5028 Date ~ "~ th rlt 2 25.23 . ~~ Form 10-422 Rev. 1/2004 Submit in Duplicate Northstar Gas Flaring Incident Report 12/1 /2005 - 12/31 /2005 Start Date /Time End Date /Time Minutes MCF Incident Cause /Description Remediation Taken Event Type Flare Planned Less Than 1 Hour Group Total 226 Planned Greater Than 1 Hour 12/08/2005 22:32 12/09/2005 02:31 239.00 624 unloading NS-18 after wireling work. N/A Other HP1 12/26/2005 14:23 12/26/2005 20:52 389.00 305 Safe out of NS 14 tubing and flow header in Equipment Safe Out HP1 preparation for plug installation and flow line removal. 12/26/2005 20:57 12/26/2005 22:09 72.00 37 Depressure NS 14 flowline for safeout. Equipment Safe Out HP1 12/27/2005 03:10 12/27/2005 05:09 119.00 63 NS 14 safeout. Divert valve not seating. Greasing flow line divert valve. Equipment Safe Out HPi Group Total 1,029 Unplanned Less Than 1 Hour Group Total 6,935 Unplanned Greater Than 1 Hour 12/01/2005 00:06 12/01/2005 02:11 125.00 355 Flaring from LP Separator due to feed gas coolers Heated up feed gas coolers Upset LP freezing off and restricting flow. 12/01/2005 00:52 12/01/2005 01:55 63.00 157 Plant OSD, PAHH 2410 on NGL Surge Tank, shut Shut-in wells to mitigate flaring. Reset and attempt Equipment Outage HP1 in all welts and Compressors also went down. to restart plant. 12/02/2005 00:26 12/02/2005 03:27 181.00 2,286 Attempt restart on HPB Compressor. None, normal start sequence. HPB Start Gas HP1 12/02/2005 03:42 12/02/2005 13:06 564.00 4,325 Attempt restart on HPB Compressor. None, normal start sequence. Equipment Outage HP1 12/02/2005 04:43 12/02/2005 07:10 147.00 252 LP compressor down due to plant shutdown. Restart plant. Equipment Outage LP 12/02/2005 07:11 12/02/2005 12:49 338.00 1,412 LP compressor down due to plant shutdown. Restart plant. Equipment Outage LP 12/02/2005 20:00 12/02/2005 22:47 167.00 1,316 Attempt restart on HPA Compressor. None, normal start sequence. HPA Start Gas HP1 12/04/2005 08:00 12/04/2005 15:13 433.00 6,447 Plant OSD-Caribou Crossing shutdown causing PIC logic shutin all wells. Upset HP1 import XV to close causing subsequent plant shutdown. 12/04/2005 08:41 12/04/2005 10:18 97.00 371 Plant OSD-Caribou Crossing shutdown causing PIC logic shutin all wells. Upset LP import XV to close causing subsequent plant shutdown. 12/04/2005 10:32 12/04/2005 13:08 156.00 985 Flaring off contactor while bringing on wells for Slow bleedown to minimize flare. Plant Startup HP2 startup. 12/04/2005 10:33 12/04/2005 15:00 267.00 659 Unplanned maintenance re-start attempt. None needed. HPB Purge Gas LP 12/04/2005 17:47 12/04/2005 20:09 142.00 227 Purge and pressurization for start attempt. None needed. HPA Purge Gas HP1 12/04/2005 22:37 12/05/2005 03:23 286.00 201 Bleed off HP8 5th stg suction scrubber, left open None.....waiting on process to level out. Other LP till process levels out. 12/05/2005 06:36 12/05/2005 07:40 64.00 38 Bleed off HPB 5th stg suction scrubber, left open None.....waiting on process to level out. Other LP till process levels out. 12/05/2005 08:48 12/05/2005 10:05 77.00 41 Bleed off HPB 5th stg suction scrubber, left open None.....waiting on process to level out. Other LP till process levels out. Flarelnciden tDetails DeC 2005 FI NAL.xIs 1 of 2 1/6/2006 10:55 AM Northstar Gas Flaring Incident Report 12/1/2005 - 12/31/2005 Start Date !Time End Date /Time Minutes MCF Incident Cause /Description Remediation Taken Event Type Flare 12/05/2005 12:35 12/05/2005 14:50 135.00 1,371 Facility BESD caused well shut-downs and All wells shut in due to BESD. Equipment Outage HP1 compressor outages 12/05/2005 12:54 12/05/2005 15:08 134.00 431 Facility BESD caused well shut-downs and All wells shut in due to BESD. Equipment Outage LP compressor outages 12/05/2005 14:55 12/05/2005 16:02 67.00 231 HP Compressor purging for restart. None, normal restart. Plant Startup HP1 12/05/2005 16:48 12/06/2005 07:05 857.00 4,336 Flaring off TEG contactor while bringing on wells Slow well bleedown. Other HP1 12/24/2005 01:51 12/24/2005 03:36 105.00 2,540 HP A shutdown Restart attempt. Equipment Outage HP2 12/24/2005 01:51 12/24/2005 03:30 99.00 1,193 HP A shutdown. Restart attempt failed. Turbine tech investigating Equipment Outage HP1 Group Total 29,172 Report Total 37,362 FlarelncidentDetails Dec 2005 FINAL.xIs 2 of 2 1/6/2006 10:55 AM