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2013 Schrader Bluff Oil Pool
October 9, 2014 RECEIVED OCT 10 2034 -aGcC Commissioner Cathy Foerster Alaska Oil & Gas Conservation Commission 333 West 7t' Avenue, Suite 100 Anchorage, Alaska 99501 Re: Annual Reservoir Surveillance Reports Nikaitchuq Schrader Bluff Oil Pool Nikaitchuq Unit, North Slope Alaska Dear Commissioner Foerster: eni us operating enl us operating cc. Inc. 3800 Centerpoint Dr., Suite 300 Anchorage, AK 99503 — U.S.A. Tel. 907-865-3300 Fax 907-865-3380 The Alaska Oil and Gas Conservation Commission (AOGCC) approved pool rules for the Schrader Bluff oil pool within the Nikaitchuq Unit as Conservation Order 639. Rule number 12 of the order requires the filing of annual surveillance reports, which is attached hereto. Should you have any questions or require additional information please contact me. Sincerely, Robert A. Province Land Manager - Alaska cc: attachment 2013 Annual Reservoir Surveillance Report Schrader Bluff Pool Nikaitchuq Field Eni Petroleum — Alaska Development Page ' i Table of Contents 1. 2013 Development Activity Summary...................................................................................................1 1.1 OPP Summer Campaign................................................................................................................3 2. Reservoir Pressure Surveys with the Nikaitchuq Schrader Bluff Pool...................................................5 3. Pool Allocation Factors and Issues over the Year 2013........................................................................8 4. Reservoir Management Summary.........................................................................................................9 5. Tracer Surveys and Injection Monitoring Conducted in the Year 2013 ..............................................10 6. Voidage Balance by Month of Produced Fluids and Injected Fluids on a Standard and Reservoir Volume Basis with Yearly and Cumulative Volumes...................................................................................12 7. Reservoir Studies.................................................................................................................................12 8. Future Development Plans..................................................................................................................12 Attachment 1, Nikaitchuq Field - Drilling Schedule for the year 2013 (a) Oliktok Point Drilling Path. (b) SpyIsland Drilling Path................................................................................................................................14 Attachment 2. Voidage Replacement (VRR) Charts for the active Injector wells during the year 2013....16 Attachment 3. Nikaitchuq Field water cut trends: History Match vs. Real Time Data 2013 .....................17 Page j ii Eni Petroleum—Alaska Development 1. 2013 Development Activity Summary Development activities performed during year 2013 added a total of fifteen (15) new wells (4 oil producers, 3 water injectors, 1 source water well, 6 Dual lateral oil producers, 1 N sand appraisal well) to the existing well inventory for Nikaitchuq development (See Figure 1 & Attachment 1). Two drilling paths has been utilized for this purpose as follows: Oliktok Point Drilling Path contributed with four dual lateral oil producer wells (OP08-04 L1, OP14-S3 L1, OP05-06 L1, OP10-09 L1), one water well (OP22-WW03), one N sand development test well (OP19-TIN). Spy Island Drilling path contributed with three producer wells (SP05-FN7, SP22-FN1, SP36-W5), three injector wells (5132-W2, 5119FN2,S135,W4) and two dual lateral oil producer wells (SP36- W5 L1, SP08-N7 LI). (See Figure 1, Development Pattern Map up to Dec 2013) SP05-FN7 Oil Producer 1/23/2013 Spy Island SP22-FN1 Oil Producer 3/4/2013 Spy Island 5132-W2 Water Injector 5/2/2013 Spy Island 5119-FN2 Water Injector 6/30/2013 Spy Island OP08-04 L1 Dual lateral oil producer 7/2/2013 Oliktok Point Sp36-W5 Oil Producer 7/27/2013 Spy Island OP22-WW03 Source Water well 8/14/2013 Oliktok Point SP36-W5 Ll Dual lateral oil producer 8/15/2013 Spy Island OP19-TlN Appraisal Oil Producer 9/19/2013 Oliktok Point 5135-W4 Water Injector 10/1/2013 Spy Island O1314 -S3 L1 Dual lateral oil producer 10/20/2013 Oliktok Point 5P08 -N7 Oil Producer 10/27/2013 Spy Island 5P08 -N7 Ll Dual lateral oil producer 11/14/2013 Spy Island OP05-06 L1 Dual lateral oil producer 11/16/2013 Oliktok Point OP10-09 L1 Dual lateral oil producer 12/16/2013 Oliktok Point Tablel. 2013 Well placement Schedule for Nikaitchuq Field Positive response to date indicates that the oil recovery strategy chosen for this field will continue to be waterflood as the main recovery technology. In Figure 2 we can quantify the results of this recovery strategy on field production. Page 11 Eni Petroleum —Alaska Development I I SP22-FN1 Tuvaaq niKaiTznuq veveiopmeni raxwrn -mina Awj a SPISA Nik-01 1-N4 Nik 04 .03 ik 0f \ \ �P09-51 \ SEB igun \ ��s�P, \OP139 ON-%43qe�E34Ea�Paa 69 \ \ S117-SEs;P4} SPP} OP0&06 or"w' ` 4 06.05 O1Oi07 '-04 29S2 OP03PO5 0Pfr, 0- 41 POH 0 0111. Schrader Bluff OADevelO men D i000 moo soon a000 spoon Signature Date � f a� Alaska Dow. Team 08/07/2014 as000 i►s# Mswnl Figure 1. Nikaitchuq development Map showing the completed well paths and its reservoir units up to Dec 2013. green = producer, blue = injector, Dual lateral producer, purple = N Sand Appraisal well. Eni Petroleum —Alaska Development Page 12 •r1 M _m waa7 OP2S95 r M= $ 2000 7 °e:L., -� a ---a--------�-- � -- i �---�----�--�----�---r— ----—�r—�--� .--�., 7 LL O V C LL• C S r C C Ems.' 2 Y fq 2 Figure 2. Nikaitchuq Field production and events summary 1.1 OPP Summer Campaign Of particular relevance for the development of the field has been the 2013 Summer campaign at OPP. As mentioned above this campaign included the drilling of an additional water source well (OP22) to sustain waterflood growth, testing of multilateral concept for the OA sand and the drilling of a dedicated producer targeting the N Sand. Multilateral Campaign The concept of adding a second lateral in counter phase undulation to the main bore was tested initially on OP08-04 well. Figure 3, shows results or the first four wells validating that doubling the productivity could be possible. These early positive results encouraged extending the campaign beyond summer in order to target as many producers as possible on OPP. In addition, bilateral wells are currently the new development standard for OA producers. Figure 4 summarizes a typical production history for OPP wells where waterflood and multilateral intervention impact are apparent. Page 13 Eni Petroleum - Alaska Development :i Oi i i Q i M N i0 r. N N iN 20088 r •i a 18000 I 16800 — I : ' - 11000 'S :—i i i t 3 .�---{- ; 12008 10000 _— i g — t � is 8000 Woo 000 4000- 2000 2000 ? 6 7 LL O V C LL• C S r C C Ems.' 2 Y fq 2 Figure 2. Nikaitchuq Field production and events summary 1.1 OPP Summer Campaign Of particular relevance for the development of the field has been the 2013 Summer campaign at OPP. As mentioned above this campaign included the drilling of an additional water source well (OP22) to sustain waterflood growth, testing of multilateral concept for the OA sand and the drilling of a dedicated producer targeting the N Sand. Multilateral Campaign The concept of adding a second lateral in counter phase undulation to the main bore was tested initially on OP08-04 well. Figure 3, shows results or the first four wells validating that doubling the productivity could be possible. These early positive results encouraged extending the campaign beyond summer in order to target as many producers as possible on OPP. In addition, bilateral wells are currently the new development standard for OA producers. Figure 4 summarizes a typical production history for OPP wells where waterflood and multilateral intervention impact are apparent. Page 13 Eni Petroleum - Alaska Development Individual .Actions 3.5 T i 3 3 WI support 2.5 4 1 1 . x � � j 1 1 � 2 1 1 a i = 1.5 6 � 1 I 0.5 I. OP08-04 OP14-53 :. OPO -09 OP05-06 ML E3 Pre-workover PI 0.83 1.03 1 OSB Post-workover PI 1.74 2.33 2.9 1.7 Ratio 2.1 2.3 2.9 2.9 Average 3.5 3 2.5 a 2 1.5 1 0.5 D Pre-workover PI Post-workover PI Figure 3, Multilateral intervention impact on productivity; first four wells at OPP area 2000 Well OP14-S3 Oil Production Rate 1800 MLT _rAultrlateraloil rate 1500 1400 2. 1200 a Iwo 800 600 400 200 4 — -Single lateral ort fate AVM oil rate Ian -11 Ju1.11 Jan -12 M-12 Jan -13 Jul -13 Jan -14 Jul -14 Itirl15 flip 15 DATE Figure 4, OPP type well response Page 14 En! Petroleum—Alaska Development T NO WI WI support support 4 1 1 . x � � j 1 1 1 1 -Single lateral ort fate AVM oil rate Ian -11 Ju1.11 Jan -12 M-12 Jan -13 Jul -13 Jan -14 Jul -14 Itirl15 flip 15 DATE Figure 4, OPP type well response Page 14 En! Petroleum—Alaska Development OPP22 Water Source Wells Positive waterflood response triggered the need for an additional third water source well to sustain water injection growth. A step change can be observed in August 2013 in Figure 2 as wells achieve injection targets. Field voidage balance has been achieved in 2013. As a result, the field accelerated its growth rate achieving 20K bopd by the end of the year - 2. Reservoir Pressure Surveys with the Nikaitchuq Schrader Bluff Pool Following the reservoir monitoring activities of previous years, during 2013 reservoir pressure was measured and monitored around the active well paths (Figure 5a, 5b). A comparison of reservoir pressure maps for the years 2012 vs 2013 shows us that the field has been developed towards the NW side of the current lease and the impact of those producer wells on the natural reservoir pressure. (See Figure 6). Patterns north, far north and west were almost complete by year's end. Figure 6, shows how intake pressures have been gradually stepped down. Sand production, GOR and pattern balance are monitored between acceleration steps. Datum, expected bubble point or pump constraints explain the spread observed. e 3000 4- 900 800 7043 off? -�.------- I —OP12-01 400 i– ... . i TOP17-02 , f[ 3004 's I 200 .I---- `r•"'--_.�..,�_a,_.._.-.. -- OPS -05 N H H t —� OP14-53 g a Figure 5a. Reservoir pressure measurements along year 2013 for the active wells at Oliktok Point Development area. Page 1 5 Eni Petroleum —Alaska Development -�.------- - —OP12-01 TOP17-02 , — OP36.03 -- OPS -05 f t OP4.0T r _ OPIS-08 —� OP14-53 OP8-S: OP3"9 OP9_51 Figure 5a. Reservoir pressure measurements along year 2013 for the active wells at Oliktok Point Development area. Page 1 5 Eni Petroleum —Alaska Development i ' izm - •� I 1101) 1000 Intake BHP 503 —SA -M5 400 SP-J1f1 j SPAV5 300 SP US 200 i ... .._... —SP -FN 8 .. _. :u _,.:.. ,... _.._. ._. — ISP -F>5 .. ...... ... a-. — SP_1;W7 ,L _SP -N1 'x SP -NS -I-SP-N7 c ` SP24-SEL 503 —SA -M5 400 SP-J1f1 j SPAV5 300 SP US 200 _—_e, ... .._... _.:....:,:...... .. _. :u _,.:.. ,... _.._. ._. _ . . .. ...... ... a-. .a ,L c 1+ L Q c a tF i y c Figure 5b. Reservoir pressure measurements along year 2013 for the active wells at Spy Island Development area On the injector side, wellhead pressures have been capped at an equivalent of 0.61psi/ft to avoid injection at flacking regimes. Page 16 Eni Petroleum—Alaska Development Nikaitchuq Pressure Map Up to Dee 2011 *. SI 0115 - Pressure Map @ Y' Nikeitchuq Pressure Map 0 uz to Dec 2012 9q0 YI svn MN ons anoM opiso po"T 001*5 -rpt I W In -pe owal, Pressure Map YE I 6 rE a,;.,L Page 17 Eni Petroleum —Alaska Development Figure 6. Comparative pressure maps of Nikaitchuq Field for the year end at 2011 to. 2013. 3. Pool Allocation Factors and Issues over the Year 2013 Production from all wells producing from the Schrader Bluff pool is commingled at the surface into a common production line. Theoretical production for individual wells from the pool is calculated on a daily basis by using well test allocation. Daily theoretical production for a well was calculated using the last valid well test and the amount of time a well was on production for a given day. For example, if we had a valid well test on the first of the month and another on the fifth of the month, the allocation factor for that well will be calculated on the first through the fourth of the month using the test on the first. Subsequently, the allocation factor will be recalculated on the fifth using the new valid test measured on the fifth. On the monthly level, our AVOCET Manager Production software sums up the allocated volumes from each time period between valid well tests. (Minutes on production/1440 minutes/day)*Daily Rate (st6/d)well test=Theoretical Daily Production The daily allocation factor for the field is calculated by dividing the actual total production for the day by the sum of the theoretical daily production for each individual well. Daily allocated Page 18 En! Petroleum —Alaska Development production is assigned to each well by multiplying its theoretical daily production by the daily allocation factor. The average daily allocation factor for 2013 was 1.04. This confirms that our well allocation method is reasonably accurate. The slight discrepancy is attributable to pressure differences between the production and test headers. 4. Reservoir Management Summary The Nikaitchuq OA reservoir development has focused in two major areas, including injection balance management and productivity improvement. As mentioned, on the second part of 2013, a new development strategy was implemented with the objective of increase the production at the field, this new development strategy consist on the addition of a lateral. The dual lateral well development project has been extended adding eight more wells from the OPP drilling path (OP08-04 L1, OP24-S31_1, OP05-06L1, OP10-091_1, OP09-SIU, OP03-051_1, OP18-08L1 & OP16-031_1) and five more wells from Spy Island drilling site (SP36-W5L1, SP08- N7L1, SP24-SEL1, SP12-SE3 L1 & SP21-NW1 1_1) The planned activity in 2009 had a total well count of 51. The well pattern and summary of the activity up to the end of year 2013 was 49 wells (including the dual lateral well paths) and it can be summarized as follows: *OPP Oliktok point development path (onshore) *SID=Spy Island Development path (offshore) SID Ext = Spy Island Western development extension wells ** the well OP -12 was drop from the drilling program Table 2. Total planned well count for Nikaitchuq Development Page 19 Eni Petroleum—Alaska Development Planned Activity (2009) Activity up to date (December 2013) OPP SID Total OPP SID Total Injector 8 12 20 8 7 15 CL Producer 11 15 26 11 11 22 Disposal 1 1 2 1 1 2 3 Water Source 3 1 0 1 3 1 3 0 1 3 Total 23 1 28 1 51** 23 19 42 Dual Lateral Well Paths 4 2 6 *OPP Oliktok point development path (onshore) *SID=Spy Island Development path (offshore) SID Ext = Spy Island Western development extension wells ** the well OP -12 was drop from the drilling program Table 2. Total planned well count for Nikaitchuq Development Page 19 Eni Petroleum—Alaska Development 5. Tracer Surveys and Injection Monitoring Conducted in the Year 2013 Tracer surveillance analysis was conducted for the SP10-FN5 well during the year 2013. Five oil and water tracer system was installed to cover the bottom six compartments of the well. The tracer systems pairs (oil and water tracer) those tracers were deployed to assess distribution along wellbore and to determine locations of water production (Figure 7-8). I blxf 'C359rg1 '1 I i 21dd NL I WO,TaTr5O°Int -til.lt e*iLrXx a• -s r 1' w711;E UM w ST' -7-1 90,1 Tik"Wd parr L'3ds.1::; s"V twff, 11% „Inc- eni Pei SA V_$rO Oil Produoor with SSP Ot As Completer 141CWQ 1? li ?^i MO -'+ TV{} SP1x'r 51�1p LInG�' �-Ii11=]Eh>�16Ind 4 x _£f i2 ii[ ft 7vr RALa-!,, Oil 5 [ N t%- 5MRr DUIel Err Nus* G1:S3e Shoe i I L)IM A � ! xrr2ftr 1r alm 9wwl1r L47 J®Tr — ._- - — I III ;� 77010 fltfetrh 4.331!Vg t�'O..IfPtrrO il0i -W, 10JN '1.Q1 9r 111k Pr -1 SwdPirrS LR>'71 49,ZYy!. .813.r71PAC. '18TS Poo r �074ae i14ra; $J`Ngn Nirwwaelrlecs•iYS r.>i 0lr4317 ;C" EAt i Figure 7. Completion configuration for the SP10-FN5 well Page 110 En! Petroleum —Alaska Development 19.S1FoIMO.Si�1d'T�L1:'t`!nE <XM,11BMG d•4`x E' • WO 1 100 Ps. STS -I 800 ri kNwd fl 'I� !g MD- '6: 14. NO. U �vh.ufg* Ss: u:a Sub �,. tfi.26�'NL' 9.753 T4G ?s�=!ns - 8n41,,nfVWr Cea`rvaxw CerwnikTC-ESP, ,f- 186cSE' iG}i age IAp. ,1 A 11 P,aMI Sid-, F±ys hPl 111SPW vAr � 3' �r$IYI�:il.�at,�7flrtli ir.lGl ti�MK.�1i{t YlI�iIC.51 T IL j :xlflM!�q�1 !I'IL I�!!C!-ilr�1� eni Pei SA V_$rO Oil Produoor with SSP Ot As Completer 141CWQ 1? li ?^i MO -'+ TV{} SP1x'r 51�1p LInG�' �-Ii11=]Eh>�16Ind 4 x _£f i2 ii[ ft 7vr RALa-!,, Oil 5 [ N t%- 5MRr DUIel Err Nus* G1:S3e Shoe i I L)IM A � ! xrr2ftr 1r alm 9wwl1r L47 J®Tr — ._- - — I III ;� 77010 fltfetrh 4.331!Vg t�'O..IfPtrrO il0i -W, 10JN '1.Q1 9r 111k Pr -1 SwdPirrS LR>'71 49,ZYy!. .813.r71PAC. '18TS Poo r �074ae i14ra; $J`Ngn Nirwwaelrlecs•iYS r.>i 0lr4317 ;C" EAt i Figure 7. Completion configuration for the SP10-FN5 well Page 110 En! Petroleum —Alaska Development :ter ,5 i aao- a seaa ta-9.300 ft am Figure 8. The upper table summarizes the tracer systems placement and sequential naming from tow (OS -1 & WS -1) to hell (05-5 & WS -5). The figure below shows the physical location of those traces along the well bore The analysis was done in two steps: A steady state from December 2012 — February 2013 an re- start on March 2013. The results of those test show an anomaly that could potentially indicate no flow upstream of 16,000 ft MD (Figure 9); this anomaly will be considered for further investigation as a part of the scope of study on the next intervention of this well which is going to be in 2016 ir,mlar c,oOribution in tittle L_K no produebon No pfoductio n both compartments (Weak (Absent tracer) F . :-F tracer OS -3 OS -2 OS -4 Figure 9. SP10-FN5 lower completion well trayectory, showing the re -start flow distribution results based on flush -out modeling and the absence of signal from tracers below 16,000 ft MD Page 111 Eni Petroleum—Alaska Development 6. Voidage Balance by Month of Produced Fluids and Injected Fluids on a Standard and Reservoir Volume Basis with Yearly and Cumulative Volumes A total of 4.82 millions of barrels of oil was produced from the Nikaitchuq field during the year 2013 at an average daily production of 13,220 bopd. Injected volumes of water during year 2013 were about 5.24 millions of barrels at an average daily rate of 14,380 bwpd. Attachment 2 summarizes month by month bases production / injection sectors and their voidage replacement ratios. The table below summarizes the entire voidage replacement for the Nikaitchuq field. Table 3. 2013 Reservoir Pressure Report summarizing the monthly produced an injected fluids on the Nikaitchuq Field 7. Reservoir Studies A new reservoir model was produced in 2013. This is the first Nikaitchuq model to incorporate significant amount of information collected since development started (well performance and extensive well control data). The model has validated the development concept and field performance. Watercut trends have been captured; data from further 2014 validates FIM. From reservoir management and waterflood performance point of view, the most relevant feedback is that field watercut trends (through July 2014) are in line or more optimistic than modeled trends suggesting no significant by passing of oil and good conformance. Attachment 3 presents the individual well trends. 8. Future Development Plans Future development plans include the drilling of dual lateral on the existing production wells at SID drilling paths at the end of the development. On 2014 drilling activity will focus on the derisking and development of additional development area towards the West part of the field. Page 1 12 Eni Petroleum —Alaska Development MONTHLY SURFACE MONTHLYSURFACF MONTHLYSUBSURFACE LUMULATIYE5URFALE JNIECTION INSTANTANEOUS MONTHLY LUMUL4TIVE SUBSURFACE VOIDAGE VOIDAGE VOIDAGE VOIDAGE SUBSURFACEVOIDAGE VOMAGE VOIDAGE REPLACEMENT RATIOS OILGAS WATER GAS WATER OIL GAS WATER WAMUNJ PRODUCTION INJECTION PRODUCTION INJECTION I YEAR MONTH MB MMff MB OIL MB MMS MB MR MMCF M9 MR MRB MRE MRH MIRE INSTANTANEOUS CUMULATIVE Table 3. 2013 Reservoir Pressure Report summarizing the monthly produced an injected fluids on the Nikaitchuq Field 7. Reservoir Studies A new reservoir model was produced in 2013. This is the first Nikaitchuq model to incorporate significant amount of information collected since development started (well performance and extensive well control data). The model has validated the development concept and field performance. Watercut trends have been captured; data from further 2014 validates FIM. From reservoir management and waterflood performance point of view, the most relevant feedback is that field watercut trends (through July 2014) are in line or more optimistic than modeled trends suggesting no significant by passing of oil and good conformance. Attachment 3 presents the individual well trends. 8. Future Development Plans Future development plans include the drilling of dual lateral on the existing production wells at SID drilling paths at the end of the development. On 2014 drilling activity will focus on the derisking and development of additional development area towards the West part of the field. Page 1 12 Eni Petroleum —Alaska Development (Figure 10). This project, beyond original development scope, will include up to four more wells to SID. To achieve the total wells planned for this project, the remaining drilling schedule can be summarized as: ■ Year 2014: 3 Producers + 4 Injectors + 7 Dual lateral producers ■ Year 2015: 3 Producers + 2 Injectors + 7 Dual lateral producers ■ Year 2016: 3 Dual lateral producers 4[ 06 4D4=M 49M 488000 .._ } . 312644M RI .y 1 S1 4 $198 (P Sp8 L �1 a p888 oP,6 2 17-0Y 0 0120-0� 4M= 484006 488000 468000 r 500000 502000 604006 0 1000 3ID0 1000 4m0 500011 510000 1:37500 wYtlL' Figure 10. Nikaitchuq map showing the West area extension concept Page 1 13 Eni Petroleum —Alaska Development Attachment 1, Nikaitchuq Field - Drilling Schedule for the year :1:013 (a) Oliktok Point Drilling Path. (b) Spy Island Drilling Path Attachment 1(a) 14 dqy IR WI 77'W" V_'V nom ................ Nth "M=wM" amw Page Eni Petroleum—Alaska Development PGI I: Ewft.w ki 14 dqy IR WI 77'W" V_'V nom ................ Nth "M=wM" amw Page Eni Petroleum—Alaska Development M 9L w.' _ Mi} 14 dqy IR WI 77'W" V_'V nom ................ Nth "M=wM" amw Page Eni Petroleum—Alaska Development Attachment -1(h) Page J 15 Eni Petroleum—Alaska Development arL Sun W35ty 3971919!3 -•-i — .. ... .. y. .. , Ssn 6•;x'.'1 •f(�t 1-t 0R 4171Ys.1% '.'ll9-F:+1-s Z,- L"'i".:S wnK^ IM yf'} 'Sd'J-F;5 &PR W1 n 100!ij d[ 01 Lt�' 3E 1 SIDIK f.L ,000. a !"I RLlpiA1:1YNN[Y #O�t'e 'ilyI ETF Srt YK 11� SW11a,41, 100— ^P 5125!Wd? 14'1k8d "lua i87f l� 10K 6J2LIV14':5 0K Irj I •,' »rd'm!5 441% 0 Ap� '�• Wd QW6 IM g l� '. ' - •- I'. I ,' .... t LT% POP r pF.1L c: Iwn s'xr rs ,1ecPI ...I 9PbE-SL7 E, .. MTm WM,1! _ _ 9% - ! —' SP1sFb a aK SRAU.h81;.1 • Id� r; --r j a r rr..r r Sw mlv --------- Fowl] ad..V241F6 dtlxa 8�taS1lfa R7,"18'Si .,�i ._ r. rrY,Syt �r Pm WAMLWM�* h+l.krr • =,1_ _I''... w�...,..^-3 Page J 15 Eni Petroleum—Alaska Development Attachment 2. Voidage Replacement (VRR) Charts for, the active Injector wells during the year 2013. Page 1 16 Eni Petroleum—Alaska Development ni petroleum Nikaitchuq Field Attachment 2, Voidage Replacement (VRR) Charts for the active injector wells year 2413 www.eni.it Nikaitchuq Field Development Voidage Replacement Cumulative 2010-2013 TOTAL 2013 4825.91 1 520.20 1 590 76 1 5056.67 1 87 34 1 592.16 1 9714.09 1 1175.71 708.42 1 5247.97 5746,17 5260.33 11344 46 7809.56 0.92 0.69 eni petroleum w 0 l n o 2 MONTHLYSURFACE VOIDAGE MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE IWECfION VOIDAGE I NSTANTAN EOUS MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SUBSURFACE VOIDAGE VOI DAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB %AIATER_INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB IINSTANTANEOUS CUMULATIVE 2013 1 304.81 30.71 1296 320.02 2.13 12.99 519299 68&22 130.62 295.30 335.14 295.99 5933.43 2845.21 0.86 0.46 2013 2 290.05 30.85 14.51 304.52 3.37 14.54 548304 717.07 145.13 296.95 322.43 29766 6255.86 3142,97 0.92 0.50 2013 3 351.78 38.56 24.41 369.33 6.51 X47 5834.82 755,62 169.54 325.74 400.40 32&51 6656.27 3459.38 0.82 0.52 2013 4 335.47 3489 28.77 35221 4.71 28.84 6170.25 790.51 198.31 31&64 385.76 317.39 7042.3 3786.77 0.82 0.54 2013 5 370.03 37.94 1 31.58 388.49 3.82 31.65 6540.32 828.45 229.89 _ 345.02 423,96 345.83 7465.99 4132.59 0.82 0.55 2013 6 364,46 37.42 1 33.76 382.64 4.00 33,84 690479 865.87 263.64 366.64 420.48 36751 788&48 4500.10 0.87 0.57 2013 7 374.22 39.49 35.77 39289 5.27 35,95 7279.01 905.36 299.42 41702 434.03 41840 8320.50 4918.10 0.95 0.59 2013 8 436.75 46.62 4&08 45854 6.68 1 4819 7715.76 95L98 347.50 47236 513.41 473.47 8833.91 539157 0.92 0.61 2013 9 46252 50.62 67.88 485.60 10.84 68.04 8178.28 1002.60 415.38 555.48 56448 556.79 939859 5948.37 0.99 0.63 2013 10 467.66 5405 10L09 490.99 9.35 10133 8645.94 1056.65 516.47 614.20 602.67 615.65 1D600,06 6560.02 L02 0.66 2013 11 484.88 5207 110.55 509.07 7.84 110.81 9130.82 1108.71 627.01 606.90 627 72 608.33 10627 78 7172.35 0.97 0.67 2013 12 583 27 6700 8141 61237 2270 8160 9714 09 117571 70842 635.71 71668 63721 11344 46 MM 56 0.89I 0.69 TOTAL 2013 4825.91 1 520.20 1 590 76 1 5056.67 1 87 34 1 592.16 1 9714.09 1 1175.71 708.42 1 5247.97 5746,17 5260.33 11344 46 7809.56 0.92 0.69 eni petroleum w 0 l n o 2 Nikaitchuq Field Development Voidage Replacement Year 2013 2413 Monthly Summary 0I07-04 Well FOTAL2013 I 127.36 1 37.74! 1 29.11 I 196.71 1 0.00 1 29.12 j 499.57 1 106.42 1 37.58 1 32243 I 225.89 1 323.19 1 625.11 1 880.83 f 1.43 1109 eni petroleum 3 MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE h10NTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE CU M ULATI VE S UBSURFACE VOIDAGE VOIDAGEREPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL M8 GAS MMCF WATER MB WATER IN1 M8 PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 13.17 2.59 L44 23.83 0.00 L44 325.38 7177 9.91 20.00 15.27 20.04 414AS 377.68 131 0.91 2013 2 1226 2.42 L65 12.67 0.00 165 337.64 74.19 1156 20.03 14.53 20.08 429.02 397.76 L30 0.93 2013 3 13.41 258 2.26 14.D8 0.00 127 35105 76,77 13.82 2256 1635 22.61 445.36 420.38 L38 0.94 2013 4 13.23 157 189 13.89 0.00 189 364.28 79,44 16.71 2136 - 16.79 21.41 462.15 441.78 1.28 0.96 2013 5 12.62 2.93 260 13.25 1 0.00 2.61 376.91 82.37 1 19.31 10.06 15.86 10.09 478.01 451,87 0.64 0.95 2013 6 11.79 2.57 272 12.38 0.00 2,73 1 388.70 84.94 2203 20.59 15.11 20.64 493.12 472.51 L37 0.96 2073 7 17.18 3.12 2.95 18.04 0.00 296 405.88 88.06 24.99 21.17 21.00 2122 514.12 493972 LOl 0.96 2013 8 19.64 3.30 272 20.62 0.00 272 425.52 91.36 27.70 29.34 23.35 29.41 937.46 523.13 1.26 0.97 2013 9 1&48 3.52 2.88 19.41 0.00 289 444.01 94.86 30.58 3728 22.29 37.36 559.76 560.50 168 LOO 2013 10 18.24 3.75 212 19.15 0.00 118 462.25 98.62 92.76 40.22 21.34 40.32 581.09 600.81 1.89 L03 2013 11 17.39 3.90 1.70 18,26 0.00 170 479.r4 10152 34.46 38.97 19.9fi 39.07 601.05 639,88 1.% 1.06 2013 12 19.93 3.90 3.13 20.92 0.00 113 499.57 106.42 3758 4D.86 24.05 4495 1 625.11 680.83 1.70 L09 FOTAL2013 I 127.36 1 37.74! 1 29.11 I 196.71 1 0.00 1 29.12 j 499.57 1 106.42 1 37.58 1 32243 I 225.89 1 323.19 1 625.11 1 880.83 f 1.43 1109 eni petroleum 3 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary 0I20-07 Well TOTAL 2013 147.61 14.81 23.58 LK97 0.00 23.64 302.84 28.82 46.30 164.00 17&61 164.38 366.84 224.00 0.92 0.61 f,8, n o kt: eno petroleum 4 MONTHLYSURFACE VOIDAGE MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SURFACE PRODUCTION VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE REPLACEMENT RATIOS YEAR MONTH OIL M6 GAS MMCF WATER MB OIL MRB GAS MRB WATER MRB OIL MB GAS MMCF WATER MB WATER INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 10.61 LLS 1.81 1113 0.00 1.81 165.84 15.16 74.53 10.38 12.% 10.41 20L38 70.03 0.80 0.35 2013 2 9.66 LD2 1.32 10.14 0.00 1.32 175.50 1617 25.&5 10.23 1L47 10.25 21264 80.28 0.89 0.38 2013 3 12.D0 1.73 1.40 12.60 0.00 140 19750 17.36 27.24 1216 10.00 12.19 226.64 92.47 0.87 0.41 2013 4 7.1.39 LLS L64 11.96 0.00 1,65 198.89 18.50 23.89 12.13 19.61 12.16 240.25 104.63 0.89 0.44 2013 5 13.99 1.32 2.00 14.27 0.00 200 212.49 1 19.82 1 30.88 13.92 M27 13,95 256.52 11&58 0.85 0.46 2013 6 L20 203 13.09 0.00 2.03 274.% 2102 3291 13,98 15.12 14.01 27164 732.59 0.93 0,49 2013 7 t12.7 -3 1.19 L99 13.37 DAO 2.OD 23768 22.21 34.90 9.26 15.36 9.29 737.01 14188 0.60 0.49 8 121 2.00 13.14 0.00 2,01 250.20 23A3 36.90 12.11 15.15 12.13 302.16 154.03 0.80 0,51 2013 9 12.42 1.20 2.13 13.04 0.00 2.13 262.62 24.63 39.03 1&14 15.17 18.19 317.33 172.20 L20 0.54 2013 10 12.70 1.37 2.2713.34 D,00 228 27532 25.99 41.30 18.25 15,61 13,30 332.94 190.49 L17 0.57 2013 11 1166 1.49 239 14.34I 00 2.40 288.98 2748 43.69 IS667.6.73 15.69 349.67 206.19 0.94 0.59 2013 12 1386 133 261 14,55 0.00 2.62 3D2.84 28.82 46.30 17.78 U. 17.82 366.84 224.00 104 0.61 TOTAL 2013 147.61 14.81 23.58 LK97 0.00 23.64 302.84 28.82 46.30 164.00 17&61 164.38 366.84 224.00 0.92 0.61 f,8, n o kt: eno petroleum 4 Nikaitchuq Field Development Voidage Replacement Year 2013 2093 Monthly Summary 0I24-08 Well TOTAL 2013 1 468.98 1 36.80 1 5232 1 49138 1 0.00 1 52.44 1. 1089.20 1 84.94 1 74.92 1 464.72 1 544.82 1 465.82 1 1200.78 1 653.86 1 0.85 1 0.54 eni petroleum 5 MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB 1VATER_INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION j MRB INJECTION MRB 1INSTANTANEOUS CUMULATIVE 2113 1 33.50 170 1.98 35.17 0.00 199 633.72 50.84 24.58 35.33 37.16 35.42 693.12 223.46 D.95 D.32 2013 2 3033 2.44 L81 3185 0.00 182 664.05 53,28 2699 31.99 33.66 32.07 726.78 255.52 D.95 D.35 2113 3 38.24 190 2.56 40.15 0.00 2.56 702.29 56.18 28.95 35.29 4271 35.37 769.49 290.89 0.83 0.38 2013 4 37.52 288 2.82 38.40 0.00 2.82 739.82 59.07 31.77 35.59 42.22 35.67 811.71 326.56 D.84 0.40 2013 5 37.45 292 348 39.31 0.00 3.48 777.26 1 61.99 35.24 3749 42.80 37.58 854.51 364.15 D.88 0.43 2013 6 38.28 291 3.25 40.19 0.00 3.95 815.54 64.90 39.20 36.06 44.15 36.17 898,6fi 400.31 0.82 0.45 2013 7 31.99 222 3.38 33.58 0.00 3.38 847.53 6712 42.57 36.36 36.97 36.45 935.62 436.76 0.99 D.47 2019 8 42.44 3.33 1 4,69 1 44.56 0.00 4.70 889.97 70.45 47.26 40.07 49.25 40.17 984.88 476.92 D.82 0.48 2013 9 44.66 5.55 46.89 0.00 5.56 934,63 73.86 5280 44.55 52.45 44.66 1037.33 521.58 D.85 0.5D 2013 10 44.86 q3.457 6.91 47.M 0.00 6.92 979.49 77.69 59.71 44.41 54.02 44.51 1091.35 566.09 0,82 0,52 2013 11 44.06 8A2 46.26 0100 8.04 1023.55 8150 67.73 43.64 5430 43.75 1145.65 609.84 D. 0.53 2019 12 45.65 19 47.93 0.00 720 1069.20 84.94 7492 43.91 55.14 44.02 1200.78 653.86 0.80 M. TOTAL 2013 1 468.98 1 36.80 1 5232 1 49138 1 0.00 1 52.44 1. 1089.20 1 84.94 1 74.92 1 464.72 1 544.82 1 465.82 1 1200.78 1 653.86 1 0.85 1 0.54 eni petroleum 5 Nikaitchuq Field Development Voidage Replacement Year 2013 2093 Monthly Summary OP -12 Well TOTAL 2M I 295.83 1 25.85 1 5474 1 310.59 1 0.00 1 54.87 I 699.41 1 524.72 1 365.46 1 525.96 1 W&22 1 SM67 I L44 I1.06 AAM- eIfnQ eno petroleum 11 MONTHLY SURFACE VOIDAGE MONTH;YSUBSURFACE VOIDAGE CUMULATIVE SURFACE PRODUCTIONVOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOI DAGE CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER M8 OIL MRS GAS MRS WATER MRS OIL MB GAS MMCF WATER MB WATER INJ M$ PRODUCTION MRS INJECTION MRS PRODUCTION MRS INJECTION MRS 1INSTANTANEOUS CUMULATIVE 2013 1 22.00 196 2.15 23.10 0.00 2-16 42558 36.83 12.48 28.55 25.26 28.62- 463.02 352.33 1.19 476 2113 2 19.98 L77 203 20.97 0.00 2.03 445.56 38.60 14.51 29.35 23.00 29.42 486.02 381.75 1.28 0.79 2013 3 2296 1.97 2.78 24.10 0.00 2-79 46&52 40.57 17.29 34.96 2689 35.04 512.91 416.79 1.30 0.81 2013 4 2,&33 L97 3.11 1 24.50 400 3.12 491.85 42.54 20.40 27.51 35.73 540.53 452.52 1.29 0.84 2033 5 23.72 203 3.55 24.91 0.00 3.5fi 515.57 44.57 2395 2846 43.80 568.99 496.32 1.54 0.87 2013 6 2294 L97 3.72 24.09 0.00 3.73 SM51 46,54 27.67 27.82 41.87 596.81 538.20 1.51 0,90 2013 7 19.91 L64 3.64 20.90 0.00 3.64 558.42 48.18 3131 24.54 40.17 521.35 578.37 L64 0.93 2013 8 26.21 2.27 4.92 27.52 0.00 4.93 584.63 50.45 36.22 H41.78 3145 45.26 653.80 623.62 1.39 0.96 2033 9 2841 232 5.24 29.83 om 5,26 69.3.05 5277 4147 35.09 55.13 688.89 67&75 1.57 0.99 2013 10 30.06 183 7.36 3156 0.00 738 64311 55.50 4883 3894 57.24 727.82 735.99 1.47 1.01 2013it 27.80 265 7.43 29.19 0.00 7.45 670.9158.25 5625 X. 5628 764.47 792.27 1,54 1.04 2013 12 2&50 248 8.81 29.92 0.00 8.83 69941 60.72 65.07 5726 3&75 57.40 803.22 849.67 1.48 1.06 TOTAL 2M I 295.83 1 25.85 1 5474 1 310.59 1 0.00 1 54.87 I 699.41 1 524.72 1 365.46 1 525.96 1 W&22 1 SM67 I L44 I1.06 AAM- eIfnQ eno petroleum 11 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary 0111-01 well TOTAL 2013 299.43 30.81 4&34 314.36 0.00 48.46 I 763.20 1 78.82 1 60.71 444.69 362,82 445.73 677.12 907.75 1.23 103 eni petroleum MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SUBSURFACE VOIDAGE VOI DAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB WATER_INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 13.47 L21 150 14.14 0.00 L50 477.24 49.22 13.87 27.82 15.64 27.88 529.94 489.90 1.78 0,92 2013 2 1215 L07 L97 1275 0.00 L37 469.39 50.29 15.24 2601 14.13 26.07 544.07 515.97 1.85 0.95 2013 3 14.08 120 163 14.78 0.00 L82 503.47 5149 17.05 29.15 S6.W 75.22 560.67 545.19 1.76 a97 2013 4 14.58 123 2.09 15.30 0.00 109 518.04 52.72 1914. 27.04 17.40 27.11 578.06 $72.30 1.56 0.99 2013 5 14.64 1,26 1 2.31 15.37 0.00 231 532.68 53.98 2L45 29.02 17.68 29.08 595.75 60L38 1.64 1.01 2033 6 14.41 L24 2.37 15.13 0.00 137 547.10 55.22 23.91 26.68 17.51 2&74 613.25 628.13 1.53 L02 7013 7 29.05 294 3.81 30.50 0.00 3.81 57615 58.16 27.62 27.44 34,32 27.50 647.57 655.63 0.80 L01 2013 8 38.11 4.09 5.24 40.02 0.00 5.25 614.25 62.25 3186 4500 45,27 45.11 692.84 700.74 3,00 L01 2013 9 38.18 192 SAS 40.09 0.00 5.47 65144 66.17 38.32 4711 45.56 47.22 738.40 747.95 104 101 2013 10 3786 4.41 70S 39.75 0.00 7.07 690.31 70.58 45,37 50.96 46.82 SLOB 785.22 799.03 1.09 1.02 2013 11 37.11 4.37 6.73 38.96 0.00 6.74 727.42 74,96 5210 53.03 45.70 53.15 930.92 852.18 1.16 L03 2013 12 35.78 3.86 8.61 3757 0.00 8.63 763 20 78.82 60.71 5544 46,20 55.57 877.12 907.75 L20 1.03 TOTAL 2013 299.43 30.81 4&34 314.36 0.00 48.46 I 763.20 1 78.82 1 60.71 444.69 362,82 445.73 677.12 907.75 1.23 103 eni petroleum Nikaitchuq Field Development Voidage Replacement Year 201:3 2013 Monthly Summary 0I13-03 Well TOTAL 2013 259.97 2136 60.55 27294 0.00 60.69 605.22 5132 65.89 29340 333.63 294.09 704.96 486.25 0.88 0.70 eni �etr®Aeumm s MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACEVOIDAGE CU M ULATI VE 5 UBSURFACE VOIDAGE VOI DAGE REPLACEMENT RATI OS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB MATER INJ MB PRODUCTION MRB INJECTION MRS PRODUCTION MRS INJECTION MRS INSTANTANEOUS CUMULATIVE 2013 1 20.21 L82 0.91 2122 0.00 0.91 365.46 31.78 6.25 17,84 2213 17.88 393.46 220.04 0.81 0.56 2013 2 1759 L60 0.85 18.47 0.00 0.85 363.96 33.38 710 15.78 19.32 15.82 412.78 235.86 0.82 037 2013 3 19.52 172 L30 20.49 0.00 131 40257 35.10 8,40 1B.62 2180 16.66 434.58 254.52 0.86 0.59 2013 4 19.06 I L67 131 20.01 0.00 1 1.31 42164 36.77 9.71 19.80 21,32 19.95 455.90 274.37 0.93 0.60 2013 5 2L41 LBS L57 22.48 0.00 158 443,05 38.63 1128 23.01 24.06 2107 479.96 297.44 0,96 062 2013 6 20.50 3,78 1-73 2L52 0.00 173 463.54 40.41 13.01 22.91 23.25 2196 503.21 320.40 0.99 0.64 2013 7 17.31 L43 L42 18.17 0.00 L42 480.65 4LB4 14.43 22.53 19.59 2258 522.80 342.98 L15 0,66 2013 B 23.93 2.04 3.50 25.12 0.00 3.51 504.79 43.88 17.93 24.74 28.63 24.80 551.44 367.79 0.87 0.67 2013 9 27.78 223 8.20 29.16 0.00 8.22 532.56 46.11 26.13 28.80 37.38 23.67 588.82 396.65 0.77 0,67 2013 10 27.08 255 15,35 28.43 DAO 15.38 559.63 48,67 4L48 35.87 43,81 35.96 fi32.63 432.61 0.82 0.68 2013 11 20.19 1.8.5 17.16 2L20 0.00 17.20 579.82 50.52 58.64 33.43 38AO 33.51 fi7L03 466.12 0,87 0.69 2013 12 2540 180 7.25 26.66 0.00 7.26 fi65.22 5232 65.89 30.0fi 33.93 30.13 704.95 486.25 0.89 0.70 TOTAL 2013 259.97 2136 60.55 27294 0.00 60.69 605.22 5132 65.89 29340 333.63 294.09 704.96 486.25 0.88 0.70 eni �etr®Aeumm s Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary 0106-05 Well TOTAL 2013 150.07 1 73.11 2.95 1 157.55 1 33.11 1 296 1 408 63 290.11 5.30 247 74 193.62 248.32 689.49 457.10 Z72 0.67 eni petroleum 4 I - . Ica:n0 9 MONTHLYSURFACE VOIDAGE MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SURFACE PRODUCTION VOIDAGE MONTHLY SURFACE II4JECTION VOIDAGE I NSTANTANEO US MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE REPLACEMENT RATIOS YEAR MONTH OIL M8 GAS MMCF WATER MB OIL MRB GAS MRB WATER MRB OIL MB GAS MMCF WATER MB 1M1ATER_INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 7.45 3.55 0.06 7.83 150 0.06 266.02 220.55 241 1726 9.39 17.30 500,26 22648 L84 0,45 2013 2 5.37 212 0,08 669 0.00 0.08 272.39 22267 2„49 15.28 6.76 15.32 507.02 241.39 226 0,48 2013 3 12.65 6.59 0.17 13.28 3.46 0.17 725.04 229.26 2.65 17.38 16.91 17.42 523.93 258.81 L03 0.49 2013 4 12.89 5.89 0.18 13.53 2.21 0.18 297.93 235.15 2.84 16.84 15.92 16.88 539.85 275.69 L06 0.51 2013 5 19217 6.06 0.20 1333 126 0.20 31120 24120 3.04 18.67 16.39 18,71 556.24 294.41 L14 0.53 2013 6 13.15 604 0.28 13.80 230 0.28 324.35 247.24 3.32 19.01 1&38 19.05 572.69 313.46 L26 0.55 2013 7 13.49 6.23 0.18 1416 242 1 0.18 337.83 253.48 3.50 1 19.52 M76 19.57 589.39 333.03 L270.57 2013 8 13.60 6.45 0.29 14.28 2.71 0.29 351.43 259.93 3.78 23.48 17.28 23.54 606.66 356.56 L36 0.59 2013 9 13.72 763 0.31 1440 4.52 0.31 365.15 26756 4.09 25,62 19.23 25.68 625.89 382.24 1-33 0.61 2013 10 1139 5.78 0,25 11.96 287 0.25 376.54 273.34 4.39 25.45 15.08 25.51 640.97 407.74 L69 0.64 2013 it 11.24 4.91 0.25 11.80 155 0.25 387.78 278.74 4.59 23.01 13.60 23.07 654.57 430.81 L70 0.66 2013 12 10.85 1287 0.71 2L89 722 1 0 72 408.63 290.11 5 30 26 23 29.92 26.29 684.49 457.10 0.88 j 0.67 TOTAL 2013 150.07 1 73.11 2.95 1 157.55 1 33.11 1 296 1 408 63 290.11 5.30 247 74 193.62 248.32 689.49 457.10 Z72 0.67 eni petroleum 4 I - . Ica:n0 9 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary OI15-S4 Well YEAR MONTH MONTHLYSURFACE VOIDAGE OIL GAS WATER M$ MMCF MB MONTHLY SUBSURFACE VOIDAGE OIL GAS WATER MRB MRB MRB CUMULATIVE SURFACE PRODUCTION VOIDAGE OIL GAS WATER MB MMCF MB MONTHLY SURFACE INJECTION VOIDAGE 'NATER INJ MB INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE PRODUCTION INJECTION MRB MRB CUMULATIVE SUBSURFACE VOIDAGE PRODUCTION INJECTION MRB MRB VOI DAGE REPLACEMENT RATIOS INSTANTANEOUS CUMULATIVE 2013 2013 1 2 2133 18.69 L91 L68 0.45 0.37 22.40 19.62 0.00 0.00 0.45 D.37 fi2155 640.24 50.05 5173 23.05 23.42 35.33 31.99 22,85 20.00 35,42 32.07 678,81 698.80 223A6 255.52 1,55 160 0,33 0.37 2013 3 20,99 L82 D.54 22.04 0.00 0,54 65123 59.55 23.96 35.29 22.58 35.37 721.38 290.89 L57 0.40 2013 4 20.71 L80 OAS 2174 000 048 68194 55.35 2404 35.59 22.22 35.67 743.60 326,56 1.61 0.44 2013 5 24.76 210 0.61 2400 0.00 0.62 706.70 5745 25,05 3749 26.61 37.58 770.21 364.15 L41 D.47 2013 6 23.77 200 D.66 24.96 0.00 11.66 730.47 59A5 25,71 3608 25.62 36.17 795.83 400,31 1.41 0.50 2013 7 24.50 199 0.73 25.72 0.00 0.73 754.97 6144 26.44 36.36 26.45 3445 822.28 436.76 1.38 D.53 2013 8 1 24A2 199 0.7D 25.64 0.00 0.70 779.40 63,43 2715 40.07 26.35 40.17 848.63 476.92 1.52 D.56 2013 2013 9 10 1247 18.76 104 1.64 D.59 0.75 1309 1,9,69 0.00 0.00 0.59 0.75 791.87 810.62 64.47 66.12 27.73 28.48 44.55 44.41 13.89 20.44 44,66 44.51 862.32 882.76 521.58 566.09 3.26 2.18 0.60 D.64 2013 11 31.88 2.56 0.86 33.47 0.00 0.8fi 842,Sp 68.67 29.34 43.64 34,33 43.75 917.09 609.84 1.27 0.66 2013 12 34.66 2.44 122 35.36 0.00 122 876.19 7111 30.56 43.91 36.58 44.02 953.67 653.86 1.20 0.64 TOTAL2O13 1 275.97 1 2297 1 7.96 1 289.73 1 0.00 1 7.98 1 876.19 1 71.11 1 30.56 1 464.72 1 297.71 1 465.82 1 953.67 1 653.86 1 1.56 1 0.69 �r g.%, n (I eno petroleum 10 Nikaitchug Field Development Voidage Replacement Year 2013 2093 Monthly Summary SI29-S2 Well TOTAL 2013 374.40 T 34.70 1 2220 1 393.08 0.00 1 2225 I 910.06 1 77.98 1 28.45 39167 415.33 392.59 888,76 653.76 0.95 0.74 eni petroleum 11 MONTHLY SURFACE MONTHLYSURFACE MONTHLY SUBSURFACE CUMULATIVE SURFACE II4JEcri0N I NSTANTAN EOUS MONTHLY CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE PRODUCTIONVOIDAGE VOIDAGE SUBSURFACE VOIDAGE VOIDAGE VOI DAGE REPLACEMENT RATIOS OIL GASWATER OIL GAS WATER OIL GAS WATER WATER INJ PRODUCTION INJECTION PRODUCTION INJECTION YEAR MONTH MB MMCF MB MRS MRS MRS MB MMCF MB MB MRS MRB MRS MRS INSTANTANEOUS CUMULATIVE 2013 1 27.68 2.67 114 29,06 0.00 1.14 563.34 45.95 7.39 30,60 30.21 30.67 503.64 291.84 1.02 0.58 2013 2 25.45 247 111 2672 040 1.12 58879 48.43 8.51 28.70 27.83 28.76 531.47 320.61 L03 O.EO 2013 3 28.60 2.68 1.56 30.09 0.00 156 617.39 5111 M07 28.60 31.59 28.67 563.06 349,28 0.91 0.62 2013 4 28,71 2.72 179 3014 0.00 1.79 646.10 53.83 11.85 25.67 31.93 25.73 594.99 375,00 D.81 0.63 2013 5 30.77 1.14 1.75 32,30 0.00 1.75 676.86 5696 13.60 32.23 34.05 32.30 629.04 407.31 0.95 0.65 2D13 6 33.09 3.00 212 34.74 1 0.00 2.13 709,95 59.96 15.72 31.00 36.87 31.08 665.91 438.38 0,84 Q65 2013 7 33.41 29D 2.10 35.08 0.00 210 743.36 6286 17.82 36.56 37.18 36.65 703.09 47543 0,99 0,68 2013 8 3269 2.90 221 34.32 040 222 776.06 65.76 20.03 3261 35.54 32.69 739.63 507.72 0.89 0.69 2013 9 20.42 1 1.86 177 2144 0.00 L77 79647 67.61 21.80 38.37 23.21 38.46 762.84 546.18 1.66 0.72 2013 10 25.43 255 175 2670 0.00 175 821.91 70.17 23.54 3621 28,45 36.29 791.29 582A7 1.28 0.74 2013 11 44.46 4.04 233 46.68 0.00 234 866.37 74.20 25.88 34.10 49.02 34.18 $40.32 616.65 0.741 0.73 2013 12 43.69 3.78 2.57 45.87 0.00 258 910.06 77.98 1 28.45 37.03 48.44 1 37.11 588.76 653.76 0.77 1 0.74 TOTAL 2013 374.40 T 34.70 1 2220 1 393.08 0.00 1 2225 I 910.06 1 77.98 1 28.45 39167 415.33 392.59 888,76 653.76 0.95 0.74 eni petroleum 11 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary SI35-W4 Well TOTAL 2013 189.98 11.45 174.87 199.46 0.00 115.14 276.26 16.17 115,00 89.20 314.60 89.411 513.34 89A1 0.28 0.17 en i eni pekroleum 12 MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SUBSURFACE VOIDAGE VOIDAGEREPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB WATER INJ MB PRODUCTION MRS INJECTION MRS PRODUCTION MRS INJECTION MRS INSTANTANEOUS CUMULATIVE 2013 1 11.74 0.68 0.06 12,33 0.00 D.06 98.02 5.40 0.19 0.00 1238 0.00 21112 0.00 0.00 0.00 2D13 2 9.66 0.58 0.04 10.14 0.00 0.04 107.68 5.95 0.22 0.00 10.78 0.00 221.30 0.00 0.00 0.00 2013 3 10.33 0.60 0.05 10.94 0.0D 0.05 11a01 6.58 D.27 0.00 10.89 0.00 232.19 O.DO 0.00 0.00 2013 4 9.12 0.54 0.02 9.56 0.00 O.D2 127 19 712 0.29 D.00 9.59 0.00 241.78 0.00 0.00 0.00 2013 5 9.73 1 0.56 0.05 9.69 0.00 D,D5 136.36 7.67 0.34 0100 9.74 0.00 251.53 0.00 0.00 0.00 2013 6 8.50 0.51 0.07 &92 0.00 D.D7 144.86 8.19 0.41 0.00 &D0 0.00 260.52 0.00 0.00 0.00 2013 7 9,21 0.55 0.12 9.66 0.D0 0,12 15406 8.73 0.53 0100 9.78 0.00 270.31 0.D0 0.00 0.00 2D13 8 14.48 O.B5 4.54 15.20 D.OD 4.55 16&54 9.58 EW D.DO 19.75 0.00 290.06 0.00 0.00 0.00 2D13 9 27113 1.66 1742 28.38 0.00 17.46 195.57 11.24 22.49 0.00 45.84 0.00 335.90 0.00 0.00 0.00 2013 10 1915 1.55 3747 20.63 D.DD 37.55 215.23 12.79 59.96 24.42 58.19 24.48 394.09 24AB 0.42 0.06 2013 11 24.81 1.52 42.64 2605 0.00 42.74 240.04 U. 10260 3L95 68.79 32.03 46288 56.51 0.47 0.12 2D13 12 36.22 1B7 12.41 36.03 DO0 7244 276.26 16.17 11500 3282 50.46 32.90 513.34 89.41 0.65 t 0.17 TOTAL 2013 189.98 11.45 174.87 199.46 0.00 115.14 276.26 16.17 115,00 89.20 314.60 89.411 513.34 89A1 0.28 0.17 en i eni pekroleum 12 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary S132 -W2 Well TOTAL= 413.83 1 29.04 1 3.80 434.47 I 0.00 1 3.80 1 624.86 40.77 4.15 331.86 438.28 33265 656.02 332.65 0.76 0.51 *Yfoio' eni en i petroleum 13 MONTHLYSURFACE VOIDAGE MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SURFACE PRODUCTIONVOIDAGE MONTHLY '.URFACE INJECTION VOIDAGE I NSTANTANEOUS MONTHLY SUBSURFACE VOI DAGE CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MRS GAS MRS WATER MRS I OIL MB GAS MMCF WATER MB WATER INJ MB PRODUCTION MRS INJECTION MRS PRODUCTION MRS INJECTION MRS 1INSTANTANEOUS CUMULATIVE 2013 1 31.77 215 O.D6 33.35 0.00 0.08 2428013,88 0A1 0.00 33.41 0.00 25115 0.00 0.00 D.00 2013 2013 2 3 26.42 2720 1.90 1.92 DA6 0.10 27.74 2&56 O.OD DAO 0.06 0.10 269.21 796.41 15.78 1770 O.46 0.56 9.00 0.00 27.79 28.65 0.00 0.00 278.94 307.59 0.00 D.DO 0.00 0.00 0.00 0.00 2013 4 24.29 1.76 0.05 25.51 0.00 0,05 320.71 19.46 0.61 0.00 - 25.56 400 333.15 O,DO 0.00 D.00 2613 5 24.38 1.77 0.13 25.® 0,00 0.13 345.09 2L22 0.74 116 25.73 1.17 358.88 1.17 0.06 8.06 2D13 6 28.17 2.34 0.18 29.57 0.00 0118 373.26 23.57 0.92 23.70 2%75 23.75 388.63 24.92 D.80 0.06 2D13 2913 7 8 28.70 35.75 2.25 2.51 0.33 0,36 3D.13 37.53 0.00 1 0100 0.33 0.36 4DL96 43771 25,82 2&32 1.25 161 3746 38.26 30.47 37.89 37.55 38.35 439,10 456.99 62.47 100.82 L23 L01 0.15 0.22 2013 9 4144 2.79 0.34 43.51 0.00 0.34 479.15 31.12 1.95 53167 43.84 53.80 500.84 154.62 L23 4,31 2013 10 43.13 3.00 0.60 45.28 0.00 0.60 522.27 34.12 2.55 61.14 45.88 GL28 546,72 215.90 L34 6,39 2013 11 49.69 3,61 0.55 5217 0.00 0,55 57197 3773 3.11 5&06 52.72 58.19 599,44 274,10 LID OA6 2013 12 52.89 3.04 1.04 55.53 0.00 1.04 624.86 4077 4.15 5841 5&57 5&55 656.02 332.65 L03 &.91 TOTAL= 413.83 1 29.04 1 3.80 434.47 I 0.00 1 3.80 1 624.86 40.77 4.15 331.86 438.28 33265 656.02 332.65 0.76 0.51 *Yfoio' eni en i petroleum 13 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary SI25-N2 Well TOTAL2013 1 401.57 1 38.25 1 5.37 1 42160 1 0.00 5.38 729.34 6&98 1 6.45 1 404.02 1 42&98 400.97 1 775.85 1 499.72 1 0.95 1 0.64 eni petroleum 14 MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION '/OIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOIDAGE CUMULATIVESUBSURFACE VOIDAGE VOI DAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB VNATER_INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 3L38 249 0.20 32,94 0.00 0.20 359.15 3122 1.28 21.45 33.75 21.50 382.02 116.25 0.65 0.30 2013 2 28.38 2.85 0122 29.79 0.00 0.22 387,52 34.07 150 24.47 30.01 24.53 412.03 140.78 9.82 0.34 2013 3 28.96 2.79 0.17 30.40 0.00 0.17 416.48 36.86 1.68 28.29 30.58 2&35 442.60 169.14 0.93 0.38 2033 4 20.29 1.45 0.12 2191 0.00 0.12 436.77 38.31 1.80 2761 21.43 27.67 464.03 196.81 1.29 0.42 2013 5 35.50 2.80 0.14 97.27 0.00 0.14 47228 4112 1.94 33.61 37.41 33.69 501.45 230.49. 0.90 0.46 2073 6 33.28 2.48 0.17 34.95 0.00 0.17 505.56 43.60 2.11 33.76 35.12 33.83 536.56 264.33 0.96 0.49 2013 7 34.05 3.04 0.35 35.75 0.00 0.35 539.61 46.64 245 4025 35.09 40.35 572.66 304.68 1.12 0.53 2013 8 38.45 3.93 0.33 40.38 0.00 50.57 278 37.57 40,71 37.6fi613.37 342.34 0.93 0.56 2013 9 41.73 4.69 0.50 43.81 0.00 19.80 55.25 3.28 3&76 44.31 36.85 657.68 379.18 0.83 0.58 3040.71 5.20 0.58 4275 0.00 n0.3357&07 80.51 60.45 3.86 38.81 43.33 3&90 70L01 418.08 0.90 0.60 11 20.63 2.51 L38 2L65 0.00 8114 62.96 5.24 39.00 23.03 39.09 724.04 457.38 1.70 0.53 2013 12 48.20 4.02 L21 50.60 0.00 9.34 6&98 6.45 4144 51.81 42.54 775.85 1 499.72 0.82 0.64 TOTAL2013 1 401.57 1 38.25 1 5.37 1 42160 1 0.00 5.38 729.34 6&98 1 6.45 1 404.02 1 42&98 400.97 1 775.85 1 499.72 1 0.95 1 0.64 eni petroleum 14 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary SI20-N4 Well TOTAL 2013 225.38 1 33.61 157 1 2Mr.3-r 17.71 T 3SB 1 454.06 1 6177 1 451 33112 257.92 33L90 513.21 527.26 129 103 eni petroleum 15 MONTHLYSURFACE VOIDAGE MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SURFACE PRODUCfIONVOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOI DAG E CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MRB GAS MRB WATER MRB OIL MB GAS MMCF WATER MB WATER INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 19.06 2.08 0.39 20.02 0.28 0.39 277.74 30.24 1.33 23.03 20.68 23.09 275.9s 218.45 1.12 0.79 2013 2 16.13 2.26 0.20 16.93 103 0.2D 263.87 32.50 1.53 2190 18.16 2L95 294,14 240A0 3,21 0,82 2013 3 75,39 2.15 0.16 16.16 0.97 016 279.26 34.64 1.68 23,99 17.29 24A5 311.42 264.45 1.3.9 0.85 2013 4 10.10 1.48 0.32 10.60 0.75 0.32 289.36 36.12 2.01 23.97 11.68 24.D3 323.10 288.48 2.06 0.89 2D13 5 21.36 2.45 0.32 21.37 1 0.66 D.32 309.72 38.57 2.33 2&25 22.36 28.31 345.46 316.79 1.27 0,92 2013 6 18.79 1.95 0.23 19.72 0.11 0.23 32&51 40.52 2.56 2776 20.07 27.03 365.53 344.62 139 0.94 2013 7 19.12 2.51 0.31 20.08 0.95 0.31 347.63 43.03 2.87 31.73 2133 3LB0 386.86 376.42 3.49 0.97 2013 8 20.94 3.13 0.29 21.99 165 D.30 36657 46.16 3.29.30 23.94 29.37 410.80 405.78 1.23 0.99 2013 9 21.51 3.50 0.31 22.58 2.16 0.31 390.08 49.65]A1729,72 25.05 29,79 435,84 435.57 119 100 2013 10 21.84 4.21 0.34 22.93 325 0.34 41191 53.87 2&83 26.51 28.90 462.36 464.47 L09 LOO 2118 4.16 0.30 22,23 3.27 D.30 433.09 5&03 2916 25.81 29.23 488.17 493.70 113 1.01 12 20,97 3.74 0.40 2202 2.62 DAG 454.06 6177 4 33.48 N. 33.56 513.21 527.26 134 L03 TOTAL 2013 225.38 1 33.61 157 1 2Mr.3-r 17.71 T 3SB 1 454.06 1 6177 1 451 33112 257.92 33L90 513.21 527.26 129 103 eni petroleum 15 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary SI14-N6 Well TOTAL 2013 143.80 1 25.61 1 &04 1 150.97 1 17.98 1 &06 1 27x49 1 44.61 1 6.66 0,00 177.01 am 323.73 0.00 0.00 0.00 An as petroleum 16 MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOI DAGE CUMULATIVE SUBSURFACE VOIDAGE VOI DAG E REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MS OIL MB GAS MMCF WATER MB WATER INJ MB PRODUCTION MRB INJECTION MRB PRODUCTION MRB INJECTION MRB INSTANTANEOUS CUMULATIVE 2013 1 7.93 0.90 0.15 &33 0.18 a15 134.62 19.90 0.77 DAO &66 MW 155.38 0.00 0.00 am 2013 2 6.92 L09 0.11 7.26 0.63 0.21 141.54 20.99 0.96 D.DO &10 0.00 163.48 0.00 0.00 0.00 2013 3 7.95 0.90 0.36 &34 0.16 0.35 149.48 2189 L35 am &87 0.00 17235 0.00 0.00 am 2033 4 8.14 L01 0.32 &54 1 0.31 0.32 157.62 22.89 1.67 0.00 9.17 0.00 181.52 0.00 0.00 0.00 2013 S 7.73 0.78 D.51 &11 1 0.02 0.51 165.35 23.68 2.18 D.00 &65 0.00 190.17 D.00 0.00 0.00 2013 6 8,40 L03 0.54 &81 0.30 0.54 173.74 24.70 272 D.D0 9.66 0.00 199.82 MOD 0,00 0.00 2013 7 8.34 L03 0.78 &76 0.31 0.78 18209 25.73 3.5D am 9.85 0.00 209.67 0.00 0.00 0.00 2013 8 9.45 128 0.73 9.92 0.53 0.74 191.54 27.01 4,24 IN 11.19 0.00 220.86 0.00 0.00 0.W 2013 9 50.15 170 0.71 10.66 LOB 0.71 20169 2&70 4.95 DAO 12.46 0.00 233.32 0.00 0.00 am 2013 10 10.90 156 0.62 1144 0.75 0.62 21259 30.26 5.56 0.00 12,81 0.00 246.14 0.00 0.00 am 2033 11 16,38 2.54 0.74 17.20 144 0.74 228.97 32.81 6.30 &W 1938. 0.00 265.52 MOD 0,00 D.00 2013 32 4152 11.81 236 43.59 1225 236 270.49 44.61 &66 O.00 58.21 0.00 323.73 0.00 a0p 0,00 TOTAL 2013 143.80 1 25.61 1 &04 1 150.97 1 17.98 1 &06 1 27x49 1 44.61 1 6.66 0,00 177.01 am 323.73 0.00 0.00 0.00 An as petroleum 16 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary SI11-FN6 Well TOTAL 2013 1 220.02 1 33.59 I 123.48 1 231.00 1 19.54 1 1878 1 751.21 1 34.60 1 123.63 1 0.00 1 373.31 1 0.00 1 405.87 1 0.00 1 0.00 1 0.00 D 0 ein e 0 eno petroleum 17 MONTHLY SURFACE MONTHLYSURFACE MONTHLY SUBSURFACE CUMULATIVE SURFACE IMECTION I NSTANTANEO US MONTHLY CUMULATIVE SUBSURFACE VOIDAGE VOIDAGE PRODUCTION VOIDAGE VOIDAGE SUBSURFACE VOIDAGE VOIDAGE VOI DAGE REPLACEMENT RATIOS OIL GAS WATER OIL GAS WATER OIL GAS WATER WATER IN1 PRODUCTION INJECTION PRODUCTION INJECTION YEAR MONTH MB MMCF MB MRB MRB MRB M8 MMCF MB MB MRB MRB MRB MAB INSTANTANEOUS CUMULATIVE 2013 1 7.93 0.90 0.15 8,33 0.18 0.15 39.12 1.91 0.29 0.00 8.66 0.00 41.22 0.00 0.00 0.00 2013 2 23.20 3.39 2.71 24.36 L71 2.72 62.32 S.3D 3.01 0100 28.79 0.00 70.01 0.00 0.00 0.00 2013 3 22.70 3,53 736 23.83 202 7.38 85.02 8.84 10.37 0.00 33.29 0.00 103,24 D.00 0,00 000 2013 4 17.87 269 10.64 18.76 1 L44 10.67 I 10289 11.53 21.01 0.00 30.87 0.00 134.11 0.00 0.00 0.00 2013 5 16.25 210 11.17 17.06 0.88 1119 119.14 1370 32.18 0.00 29.14 0.00 163.25 0.00 0,00 0.00 2013 6 17.70 258 11.39 18.59 130 1141 13685 16.23 43.56 0.00 31.30 0.00 194.55 0.00 0.00 0.00 2013 7 16.75 2.67 1134 1759 1.60 1136 153.60 18,96 54.90 0.00 30,55 0.00 225.10 0.00 0.00 0.00 2013 B 19.18 3.03 12.95 20.14 178 1298 17278 21.99 67.85 0.0D 34.89 0.00 259.99 0.00 0.00 OAO 2013 9 18.98 3.82 13,25 19.92 3.07 13.28 191.76 25.80 81.09 0.00 36.Z7 0.00 296.26 0.00 0.00 0.00 2013 10 20.57 3.61 13,90 2159 2.48 13.93 21233 29,41 94.99 0.00 38.01 0.00 334.27 0.00 0.00 0.00 2013 11 17.1 2.74 13,67 16.51 1.57 13.71 X29.96 32.15 108.67 D.DO 33.79 0.00 368.05 0.00 0.00 0.00 2013 12 21.25 2.44 14.96 223E 0.51 15.00 251.21 30.60 123.63 0.00 97.82 0.00 405.87 0,00 0.00 0.00 TOTAL 2013 1 220.02 1 33.59 I 123.48 1 231.00 1 19.54 1 1878 1 751.21 1 34.60 1 123.63 1 0.00 1 373.31 1 0.00 1 405.87 1 0.00 1 0.00 1 0.00 D 0 ein e 0 eno petroleum 17 Nikaitchuq Field Development Voidage Replacement Year 2013 2013 Monthly Summary SI13-FN4 Well 70TAL2013 271.51 1 X2,38 I 16.60 I 285,05 I 0.00 I 16.64 I 385.02 I 27.67 I 17.35 458,30 1 301.E 1 459.38 1 423.63 1 467.31 1 1152 1 L10 eni petroleum 18 MONTHLYSURFACE VOIDAGE MONTHLYSURFACE VOIDAGE CUMULATIVE SURFACE VOIDAGE MONTHLY SURFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOI DAGE CUMULATIVE SUBSURFACE VOIDAGE VOI DAGE REPLACEMENT RATIOS YEAR MONT14 OIL MB GAS MMCF WATER M8 OIL MB GAS MMCF WATER MB OIL MB GAS MMCF WATER MB V4ATER_INJ MB PRODUCTION MRS INJECTION MRS PRODUCTION MRS INJECTION MRS JINSTAINTANEOUS CUMULATIVE 2013 1 16.75 L43 0.34 1758 0.00 0.34 233.26 6.72 109 2770 17.92 27.77 139.86 35.70 1,55 0.26 2013 2 16.90 L64 0.34 1774 0.00 0.34 150.15 8.36 143 4122 18.08 41.32 157.94 77.02 2.28 0.49 2013 3 20.02 L81 0.65 21.02 0,00 0.65 170,17 10.17 2.08 39.46 21.67 39.55 179.61 116.57 L83 0.65 2013 1 4 19.06 L60 0.63 20.01 0.00 0.63 189.23 1177 2.71 35.40 20.64 35.49 200.25 152.05 172 0.76 2013 5 19.82 1.43 0.81 1 20,81 0.00 0.81 209.05 13.20 3.52 3641 21.62 36.49 221,87 188.54 1E.9 0,85 2013 6 19,96 166 0.99 20.96 0.00 1.00 229.01 14.86 4.51 33.32 21.95 33.40 243.82 221.94 L52 0.91 2013 2013 7 8 20.56 23,61 170 2.04 L44 154 21.58 24.79 0.00 0.00 L44 L55 249.57 273.18 16.56 18.60 5.95 748 36.20 35.90 23.03 26.33 36.29 35.99 266.85 293.18 258.23 294.22 137 L58MIL03 2013 9 27.10 252 166 2.45 0.00 165 300.28 21.12 9.15 39.88 30,11 39.98 323,29 334.20 L332013 10 28.63 2.51 138 30.06 D.00 188 328.91 2163 1103 4279 31.94 42.89 355.23 377.09 L342013 11 26.53 2.03 2.18 2785 0.00 2,19 355.43 M65 13.21 43.50 30.04 43.60 385.27 420.® L452013 12 32,59 2.01 4,24 34.21 0.00 4.15 388.02 27.67 f735 46.52 38.36 46.63 423.63 467.31 L22 70TAL2013 271.51 1 X2,38 I 16.60 I 285,05 I 0.00 I 16.64 I 385.02 I 27.67 I 17.35 458,30 1 301.E 1 459.38 1 423.63 1 467.31 1 1152 1 L10 eni petroleum 18 Nikaitchuq Field Development Voidage Replacement Year 201:3 2013 Monthly Summary ST 19-FN2 Well TOTAL 2013 1 500.22 I 27.61 I 13.27 1 525.18 1 0.00 1 13.30 1 585.55 1 31.89 1 ?.3.89 1 315.38 1 538.48 I 316.12 1 627.85 1 316.12 1 0.59 10.50 Weni eni petroleum 19 MONTHLYSURFACE VOIDAGE MONTHLY SUBSURFACE VOIDAGE CUMULATIVE SURFACE PRODUCTION VOIDAGE MONTHLY URFACE INJECTION VOIDAGE INSTANTANEOUS MONTHLY SUBSURFACE VOI DAGE CUMULATIVE SUBSURFACE VOIDAGE VOI DAGE REPLACEMENT RATIOS YEAR MONTH OIL MB GAS MMCF WATER MB OIL MRS GAS MRS WATER MRS OIL MS GAS MMCF WATER MB WATER_INJ MB PRODUCTION MRS INJECTION MRS PRODUCTION MRB INJECTION MRS JINSTANTANEOUS CUMULATIVE 20]3 1 8.81 OS3 D.18 9.25 0.00 0.78 94.11E 4.81 0.80 0.00 914 0.00 98,81 0.00 0.00 0.0D 2013 2 9.98 0.56 0.13 10.48 0.00 0.13 104.13 5.36 0.94 0.00 10.61 0.00 108.42 0.00 0.00 0.00 2013 3 36.80 2.22 118 38.63 0.00 118 140.92 7.58 2.11 0.00 39.81 0.00 149.23 0.00 0.00 0.00 2073 4 45.17 2.38 0.37 4743 0.00 1 0.37 18609 9.95 2.48 0.00 47.80 0.00 197.03 0.00 0.00 0.OD 2013 5 44.53 1 236 0.38 46.75 0.00 0.38 230.62 12.32 2.87 0.00 47.13 0.00 244.16 0.00 0.00 0.00 2013 6 39.27 2.15 0.59 4123 0.00 0.59 269.89 14.47 3.4n 0.00 41.82 0.00 285.98 0.00 0.0D D.00 2013 7 37.94 108 0.93 39.83 0.00 0.93 307.83 16.55 4.38 2210 40.76 2215 326.74 22.15 0.54 0.07 2013 8 41.30 227 107 43.36 0.00 107 349.12 18.82 5.45 38.75 44.42 38.84 371.16 60.99 0.87 0.16 2013 9 5804 183 L57 60.94 0.00 158 407.16 21.65 702 56.03 62.51 56.17 433.68 117.16 0.90 0.27 2013 10 55.85 3.70 L86 58.53 0.00 186 463.01 25.34 8.88 55.34 60.49 65.49 494.17 182.65 LOS 0.37 2073 u 60.24 3.39 221 63.24 0.00 222 SU25 28.73 1110 63.60 65.46 63.75 559.63 24610 0.97 0.44 2013 12 6231 3.16 2.80 65.42 0.00 280 585.55 31.89 13.89 69.55 69.22 69.71 627.85 31.6.12 L02 0.50 TOTAL 2013 1 500.22 I 27.61 I 13.27 1 525.18 1 0.00 1 13.30 1 585.55 1 31.89 1 ?.3.89 1 315.38 1 538.48 I 316.12 1 627.85 1 316.12 1 0.59 10.50 Weni eni petroleum 19 Attachment 3. Nikaitchuq Field water cut trends: History Match vs. Real Time Data 2013 Page 117 Eni Petroleum—Alaska Development Nikaitchuq Field Attachment 3, Nikaitchuq Field water cut trends: History Match vs. Real Time Data ** gni petro&eum en0 OPP Watercut Match 0.500 0400 .0300 E z S0 200 0 0 0100 0.000 0.500 0 A00 ,0300 E s ?0700 0.500 —7 0 AOO I .0300 E s 0 200 rj 9 0.000 0.100 0 AOO 0300 F a 200 0100 eni petroleum eni OPP Watercut Match Mco 0400 .0300 E 0 200 01000 0-5Qu 0400 E 0 300 0.500 0 400 ,0200 0100 0.000 0.500 C 400 200 '0700 O 0.000 %eni petroleum eni 3 OPP Watercut Match C"500 0.500 0400 - 0400 Foreign Water '0300 -0.300 E 200 - !0200 0 0100 — 41b 00706 db 0 10000 1000 1/1/11 1/1/13 1/1/14 0.509 0 400 0300 E 0 100 V0.000 3 AOAM— en V - :7- 0.500 -1 0400 0 300 Ao 1 1/1712 em petrokum SID Watercut Match 0.500 0 400 F 0 300 -H3:2TEPJ?T.T .5. �A72 lfi:V?_Fld_,LY-p5�1 4mf3w eni petroleum ON ds. CITE T.IAKI _LY}71y 0.500 _ .... .. .... o a 4 .. 0400 Foreign Water 8 y E 0 300 r g 0400 6 Q. r t 16 E 0 +00 t . _. S 0.000 1/1/11 1/1/12 1/1/13 1/1/14 0.500 0 400 F 0 300 -H3:2TEPJ?T.T .5. �A72 lfi:V?_Fld_,LY-p5�1 4mf3w eni petroleum ON SID Watercut Match 0.500 0400 ' 0.300 E 0100 0,500 0400 0300 E 0 200 0100 0.000 Ao-�- TQQ eni UPOU 0400 0 100 Y1 i 0.000 0.500 0 AOO E 0 300 0200 0.000 eni petroleum P., SID Watercut Match 0.$09 E 0.300 n z r {r$a o Toa ? 0100 n n 0.000 �ru'C^9PS7. pyy i=, GTiE nll'�L�}ieLYp:i; 0.500 0 400 F 0 300 3 T a O 200 � 0100 0.000 0.500 0 400 g� E 0 300 3 d a 0200 N 2 0 100 en 0.000 --t�n'crs�sva v.. anrenl� MA1LY}J}c 0.500 Foreign Water 0 400 0 0 300 a 0200 0700 n N 0.000 /7/11 t 1/1/1 1/1/ 4 eni petro�eumnt
