gas lift redesign in dual strings completion wahyu jatmiko ( bp-indonesia ) herry subekti (...

Gas Lift Redesign in Dual Strings CompletionWahyu Jatmiko ( BP-Indonesia )Herry Subekti ( BP-Indonesia )Gatut Widianoko ( Weatherford )

Presented by Henry Nickens, BP-America, Houston

* of 24

Gas Lift Redesign :To change setting pressure and port size of gas lift valves, unloading and operating valves, at existing mandrels.

* of 24

BP West Java Well WorkSand Clean OutMatrix StimPerforationGas LiftChoke OptWSOScale Clean OutZone Change

Chart5

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0.000410.0001211275.9369.807499.365306.55780.14208.1315.05164.32058

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Choke Optimization : 0 $/bbl - 15 Jobs

Fishing : $89k spent; zero benefits

Gas Lift : 0.055 $/bbl - 66 Jobs

Matrix Stimulation : 1.4 $/bbl - 10 Jobs

Other : 0.074 $/bbl - 5 Jobs

Perforation : 1.447 $/bbl - 23 Jobs

Sand Clean Out : 3.284 $/bbl - 17 Jobs

Sand Control : 176.367 $/bbl - 5 Jobs

Scale Clean Out : 2.668 $/bbl - 7 Jobs

SSSV : 0.017 $/bbl - 8 Jobs

Water Shut Off : 1.349 $/bbl - 3 Jobs

Zone Change : 0.505 $/bbl - 26 Jobs

Cuml Volume (MBBL boe) Oil + boeGas( Job Date Range = Date Range between 01 Jan 2003 and 31 Jul 2003 in Success sequence )

Cuml Cost (k$)

One Year Scorpion plot : Indonesia - WJ : All Assets : Gross : Opex : WellWork: Normal

Scorpion 03 ttl

1890.711 $/bbl

00

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&A

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Scorpion 03 ttl

0.711 $/bbl


Cuml Cost (k$)


Scorpion 03 Sol

15Choke Optimization : 0 $/bbl - 15 Jobs4Fishing : $89k spent; zero benefits66Gas Lift : 0.055 $/bbl - 66 Jobs10Matrix Stimulation : 1.4 $/bbl - 10 Jobs5Other : 0.074 $/bbl - 5 Jobs23Perforation : 1.447 $/bbl - 23 Jobs17Sand Clean Out : 3.284 $/bbl - 17 Jobs5Sand Control : 176.367 $/bbl - 5 Jobs7Scale Clean Out : 2.668 $/bbl - 7 Jobs8SSSV : 0.017 $/bbl - 8 Jobs3Water Shut Off : 1.349 $/bbl - 3 Jobs26Zone Change : 0.505 $/bbl - 26 Jobs

000000000000000000000000

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17869.778281085212687.54257957050.01KKNA-2449.80542838880.00021010437ETA-4S0.000000017184.06170724.24795442650214.21604764240.01EZC-588.49386694170.000011198504.029851365469937.861194469439900KLB-3248.1583205013128.08616462.05383640211688.0582238454920EJ-2S121.36370681851.27825203.970988018617894.81940149322350BG-3ST256.225713935425.11739180.722468281527818.312952479939448EB-8205.412490719200.954002486LC-20.454392986778.64916298.957061144911572.259513412921737KLB-1092.518779363893.847115802.78608248782219.97811856591250BZZA-9342.6734993873.123600154138EQA-7287.5453329113387.92921624.107807363215353.1165432279248.58ETA-3L75.72127166251.12458

152489.358197805108267.4443204410.1LESA-1558.07287270930.0003104474.49FK-1L0.000000017188.5354926600.883014813918886.62694051790.01EF-4L107.38049388230.000021163271.522582110244922.781033298231370BD-4L293.0811015346159.45616595.25368611782.630117062563EB-6L133.14633693553.841281234.795281703199676.70465000956076KKNA-1L455.902418585581.19349645.803771343535248.520677653957863BL-7L240.6610113966258.81700497LC-3S0.454392986779.14641041.29712810329139.320960953257415KLA-6121.6581003247151.26286140.013191588261159.4093660276964BC-5L403.83290875314.0876100964.96365483671685.12419493381750BH-1L147.40639585742.87458

147990.203051013105073.0441662190.1KKA-1663.14591687550.00041114898.84888010281578.18270487230.1EC-2ST188.95867658710.0001211217950.801915481154745.069359991116480LLE-2447.8261708946275.936005966.4EQA-7133.14633693559.807471862.386186662951022.294192530718172LLB-8506.92471277899.36537695.329722222826763.684102778247740BM-4L267.4246954994306.55700994LC-20.454392986780.1413757.36144062279767.726622842156869EQB-1S131.4258269476208.13162627.116182272744465.2524894136964EE-3S448.29816124255.051670806.478107672950272.59945644771446EB-6L197.67899531394.32058

10031.5656934397122.41164234170.01KLA-4670.26832851780.0004254692.3456217638831.56539144960.1UB-4L227.79024197860.000221138484.436679255427323.950042271387374LLF-3ST475.1501209369363.31132712.89550499394226.155808544940461LLB-7601.1508685865139.8267261.965386525155.995424429233799EZE-4S272.5806909238340.35625146.73915773817854.1848019939113112EQB-3S149.2800117495321.24332622.714359423623162.12719519081928BC-7471.46028843776.979637795.202120517926834.5935055677994EC-5S224.51358881945.31458

90682.648856114264384.6806878410.1KKA-1734.65300920570.0005233277.747287883123627.2005743970.1EQB-3L251.4174425530.00032118156.81616497155791.339477129872175LLF-1B480.941460414435.4853713.6781395682636.71147909332350LC-3L603.7875800656142.1764646.76406463299.20248586649475BD-2L275.8798934097389.8310077018EQD-1L149.2800117495398.2612129.0654361511.63645956460BK-7472.97192489727.439619626.04968600413934.49527706291097.75EA-5S238.44808409656.41233

80292.744797805557007.84880644190.1LESA-3791.66085801210.0006229587.901027034821007.40972919470.1KLB-10272.42485228220.00042114090.31450121782904.123295864651207EQA-8ST483.8455837099486.69237203.881854863726414.756116953253707LLB-9ST630.2023361826195.883745.2421632061529.121935876358985BC-5L276.4090153456448.81600516LB-5L472.97192489727.955615770.267966063911196.89025590541443.6EZA-3L249.64497435247.85593

76836.658018873754554.02719340030.1LLA-1846.21488520550.0007227483.289818899319513.13577141850.1KLB-2L291.93798805360.0005211478.0695832865339.429404133475612KLB-2L484.185013114562.30493326.705313347366261.9607724766143467BF-3S696.464296955339.35220.6637070198156.671231984131014EZA-4L276.5656865775479.837807.25786606595543.1530849068994EA-6ST255.18812743738.84993

13934.21413857449893.29203838780.1LESA-1856.10817724390.0008221001.901757681514911.35024795390.1EJ-3S306.84933830160.0006211-5206.782984724-3696.815919154110221LLE-1B480.4881971948672.52553753.978881700838165.3250060075140983ESTA-5734.6296219611480.3330065077LE-4276.5656865775544.90717671.176723409212546.53547362052399EB-6L267.734662910911.24893

869.236190728617.15769541690.1KLC-3856.72533493930.0009220849.423656847514803.09079636170.1EF-2L321.65242909790.00072110.000001720.000001221282304EQB-4L734.6296219623562.6370041499EZB-3L276.5656865775586.40624621.290970072717481.11658875166262EQA-3L285.215779499717.51093

143628.578145193101976.290483087100LLE-2958.70162542240.10092183981.648875324130626.970701481BH-5L452.27939979940.0017211009072LLB-6L734.6296219623571.709002891EQD-2276.5656865775589.2971555.01643958621104.0616721062497BZZA-7L286.319841171818.00793

112193.29974443279657.2428185464100LLF-1B1038.3588682410.2009217068.434679563212118.58862248990.1EC-6464.39798842190.00182110068905BF-1S734.6296219623640.6140090149EZC-2S276.5656865775679.4461149.2176045287815.9444992154497UB-4S287.13578567118.50493

80184.351943964156930.8898802145100LLE-1B1095.28975812120.3009251393.861889292936489.6419413981EC-4L500.88763036330.00282110020399KLB-7734.6296219623661.0130053850BC-1L276.5656865775733.2964125.5778762929.160291962300ETA-3L290.06494596320.80493

-3018.5223340374-2143.15085716650.1KKNB-1L1093.1466072640.3010249024.885068932234807.66839894191FFB-2L535.69529876220.0038211003525BG-1L734.6296219623664.5380025264BC-1S276.5656865775758.56692.39650784491.60152056641490UB-1S290.556547483522.29493

34831.545296794724730.39716072421UB-3S560.42569592290.00482110017470LLD-11734.6296219623682.0080087265LE-3L276.5656865775845.82531.318601118422.2362067941732ETA-2L290.578783690323.02693

29946.325578617821261.89116081871EF-5581.68758708380.0058211001320LA-10S734.6296219623683.328-0.03956-0.028087662504EB-9276.5656584899908.329498.530992353.9570043212150LLB-8290.932740694635.17693

25348.574932578617997.48820213081FFB-7599.68507528590.0068211004530ZUG-9734.6296219623687.858362.21003784257.169126866493168.6UB-2L291.1899098215128.34553

12961.83290810749202.90136475631BB-1S608.88797665070.0078211001491ZUC-1734.6296219623689.3490.00003230.0000229331549PB-1291.1899098444129.89453

12783.33923816049076.17085909391FFB-1617.96414750970.00882110086786LLB-2ST734.6296219623776.135001532LE-4291.1899098444131.42653

1212.7981789015861.08670702010.1BE-5L618.82523421680.0089211003525BG-6S734.6296219623779.66001548LA-8291.1899098444132.97453

78753.721435755355915.142219386310LB-4STL674.74037643620.0189211-20875.907163709-14821.8940862334129803BL-3719.807727876909.463001548PB-1291.1899098444134.52253

69766.93478467149534.5236971164600MB-2S724.27490013330.6189211-86839.9700651189-61656.378746234443112ESTA-4658.1513491298952.575005474KLA-11291.1899098444139.99653

67954.350528598648247.588875305696.08BG-8S772.52248900861.3150011001443.6EZA-1S291.1899098444141.44013

88018.662701043862493.2505177411964EC-6835.01573952632.2790011001400BG-6S291.1899098444142.84013

73416.851144656452125.964312706995UB-3L887.1417038393.2740011-7752.2726203665-5504.11356046021380ETA-2S285.685796284144.22013

228582.413403229162293.5135162933855EB-6S1049.43521735537.1290011

22996.704306089116327.6600573232500BB-3S1065.76287741267.6290011

52263.339042288437106.97072002481380EQA-1S1102.86984813279.0090011

3.74224788462.6569959980.1BE-5L1102.87250512879.0091011

25203.970988018617894.8194014932795.52BG-8L1120.76732453029.8046211

77394.933881671654950.40305598692523LLA-3S1175.717727586112.3276211

42013.553381524629829.62290088251400LB-4STS1205.54735048713.7276211

39827.017007355828277.18207522261350BB-1L1233.824532562215.0776211

37688.090947475526758.54457270761446EQA-91260.58307713516.5236211

32797.846698690523286.47115607021445EB-51283.86954829117.9686211

9213.87943339026541.854397707497.17FFB-2L1290.411402688718.4657911

54903.150249429538981.23667709492982BK-6S1329.392639365821.4477911

9653.56733343946854.032806742600MBA-1S1336.246672172622.0477911

20814.548918575714778.32973218881491.5KLA-141351.025001904823.5392911

8152.52070848755788.2897030261600MBA-2S1356.813291607824.1392911

55447.834666362139367.96261311714338BK-3S1396.181254220928.4772911

2904.18377285012061.9704787236250LLD-81398.243224699628.7272911

9546.68907522216778.1492434077964EB-11405.02137394329.6912911

24052.439618973817077.23212947142891BF-4S1422.098606072532.5822911

11526.08959885258183.52361518531400LB-4STL1430.282129687733.9822911

4696.47548518623334.4975944822600MBA-3S1433.616627282234.5822911

17807.657539425912643.43685299242485KLB-101446.260064135237.0672911

15262.114574924110836.10134819612237.25FD-1S1457.096165483439.3045411

5006.40309710353554.5461989435964BF-1L1460.650711682340.2685411

4166.92100616492958.51391437711400LB-11463.609225596741.6685411

7017.139259024982.16887390422485LLD-51468.591394470644.1535411

5889.42934674414181.49483618832250BM-21472.772889306846.4035411

6851.8430663634864.80857711772750BC-6L1477.637697883949.1535411

8813.58977332966257.6487390644363EB-4S1483.89534662353.5165411

785.3794868611557.6194356714497.17FFB-2S1484.452966058654.0137111

2957.80754371482100.04335603752409EQC-4L1486.553009414756.4227111

0.000006880.0000048848745EJ-11486.553009419657.1677111

0.00002580.0000183183849.6EQB-2L1486.553009437961.0173111

002485FG-3L1486.553009437963.5023111

001443.6EZE-4S1486.553009437964.9459111

001032LB-5L1486.553009437965.9779111

00500BH-1S1486.553009437966.4779111

008375ETA-4S1486.553009437974.8529111

-4676.7668682912-3320.5044764867994LA-9L1483.232504961475.8469111

-107581.775316381-76383.06047463051446BF-1L1406.849444486877.2929111

&A

Page &P

Scorpion 03 Sol


Fishing : $89k spent; zero benefits





Sand Clean Out : 3.284 $/bbl - 17 Jobs

Sand Control : 176.367 $/bbl - 5 Jobs

Scale Clean Out : 2.668 $/bbl - 7 Jobs


Water Shut Off : 1.349 $/bbl - 3 Jobs



Cuml Cost (k$)


Scorpion 02 ttl

2311.042 $/bbl

00

204291.201458195151788.3626834390.1LESA-4151.78836268340.0001

63168.351484293846934.08515283031UA-1S198.72244783630.0011

46230.487334088934349.25208922811KB-6S233.07169992550.0021

30765.415379418122858.70362690761EH-2S255.93040355240.0031

111308.62472874282702.308173455510LLB-3S338.63271172590.0131

8196.01219153946089.63705831381UA-1L344.72234878420.0141

74147.283009091955091.431275755310KKNA-1L399.81378005990.0241

56215.211932262441767.902465670910EZE-5441.58168252560.0341

300223.224921933223065.856116996100UYA-4S664.64753864260.1341

2664.84409756791979.9791644931LB-6STL666.62751780710.1351

22031.783876258716369.615420060210EQSA-2S682.99713322710.1451

9606.037137.2802910KKNA-1L690.13441351710.1551

81539.552686902960583.8876463688100BA-7L750.71830116350.2551

106287.93405759778971.9350047946154.8FZA-2829.69023616830.4099

118581.72519163488106.2218173842460MRA-2S917.79645798570.8699

89320.301095450466364.9837139197460LE-1S984.16144169961.3299

84774.688935315662987.5938789395460ZUG-61047.14903557861.7899

411037.493965567305400.8580164162300LLB-6S1352.5498935954.0899

150127.323296885111544.601209586900BE-6L1464.09449480464.9899

65938.947680848348992.6381268703516BM-31513.08713293145.5059

191470.791475288142262.7980661391500HZEA-41655.34993099767.0059

193128.194884064143494.248798861548BQA-11798.84417979648.5539

88327.28772700265627.1747811625774EQA-1L1864.47135457769.3279

201438.25796098149668.6256650081840LLD-52014.139980242611.1679

141594.201974751105204.492067241445MRA-1S2119.344472309812.6129

64954.447764177848261.1546887841723EQC-3S2167.605626998613.3359

159521.892001242118524.7657569231800BE-7ST2286.130392755515.1359

78537.843782088358353.6179300916964EQB-3L2344.484010685616.0999

41551.976129978830873.1182645742516FNA-12375.357128950216.6159

217774.13494275161806.1822624632891EA-6ST2537.163311212719.5069

70318.876874562652246.92551781033HZEA-12589.410236730520.5399

101625.52274242375507.76339762011575MRA-1L2664.918000128122.1149

66156.655852558949154.39529845131032BM-32714.072395426523.1469

116444.24727859986518.07572799912040LNA-32800.590471154525.1869

78586.614338883958389.85445379071445.5EB-32858.980325608326.6324

50807.256071981337749.7912614821964KLB-32896.730116869827.5964

94314.737047896770075.84962658721840EQA-1S2966.805966496429.4364

78347.494316036958212.18827681541548EZA-1L3025.018154773230.9844

36147.963817352726857.9371162931723BE-4L3051.876091889531.7074

83383.594435449761954.01066553921704EQB-3S3113.83010255533.4114

48510.869631384236043.5761361185994.33BH-4L3149.873678691234.40573

82590.385560285961364.65647129251800MRA-1L3211.238335162536.20573

164149.252202373121962.8943863633612LE-5S3333.201229548839.81773

136640.010987214101523.52816353100FK-1L3434.724757712342.91773

144275.08509559107196.3882260233372EZC-53541.921145938446.28973

70838.138927874652632.73722341081840LB-6STL3594.553883161848.12973

87879.008287640165294.10315771662485UXA-4S3659.847986319550.61473

71718.783119253653287.05585760542064HZEA-23713.135042177152.67873

17241.934313454612810.7571948968497UXA-4L3725.94579937253.17573

81667.813508469360679.18543679272556LB-6STL3786.624984808855.73173

62393.33780723946358.24999077861988LD-43832.983234799657.71973

44337.454634321632942.72879330091446BH-4S3865.925963592859.16573

105230.20866959878186.04504151153480LNA-23944.112008634462.64573

13805.593456561810257.5559382254482EJ-3S3954.369564572663.12773

40307.891585285429948.76344786711446EQC-4L3984.318328020564.57373

18241.433737706313553.3852671158671.83EQC-2L3997.871713287665.24556

48357.196932511935929.39732085631800KLB-94033.801110608467.04556

85714.777141665763686.07941625763373KA-2L4097.487190024770.41856

92848.847822633268986.69393221653680LE-44166.473883956974.09856

34094.330912901725332.08786828591380EQA-3L4191.805971825275.47856

23333.421768001417336.7323736251964EQA-94209.142704198876.44256

62625.10246530.4507862598LB-6STS4255.673154984879.04056

29538.501263081921947.10643846991380BL-94277.620261423380.42056

20561.561472790615277.2401742834963.67EA-3L4292.897501597681.38423

42920.493636202631889.92677169852064KLB-2L4324.787428369383.44823

56126.020129240541701.63295602572892EZA-2L4366.489061325386.34023

94078.129860611769900.05048643454875ESTA-44436.389111811791.21523

37084.624950893127553.87633851362040BE-6L4463.942988150293.25523

580392.344227654431231.51176114733804LESA-14895.1744999114127.05923

23415.609539316617397.79788771221380EQD-1S4912.5722977991128.43923

12051.96674636968954.6112925526737BE-3L4921.5269090916129.17623

16703.243807450712410.51014893591032KB-1S4933.9374192406130.20823

36419.865612932427059.96015040882300BL-5S4960.997379391132.50823

24463.184887229118176.14637121121549FG-54979.1735257622134.05723

198549.137916333147522.00947183613048MRA-5S5126.695535234147.10523

7693.0885715.964384516LB-6STS5132.411499618147.62123

65163.837400516148416.73118858354400LLD-85180.8282308066152.02123

22018.917674136516360.05583188341548.99KLA-145197.1882866385153.57022

20476.721788642515214.20428896131446EJ-3S5212.4024909275155.01622

11372.34140762918449.6496658684866UXA-4L5220.8521405933155.88222

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&A

Page &P

Scorpion 02 ttl

1.042 $/bbl

Cuml Volume (MBBL boe) Oil + boeGas( Job Date Range = Year 2002 in Success sequence )

Cuml Cost (k$)


Scorpion 02 Sol

7Choke Optimization : 0 $/bbl - 7 Jobs8Fishing : 0.216 $/bbl - 8 Jobs93Gas Lift : 0.094 $/bbl - 93 Jobs26Matrix Stimulation : 0.745 $/bbl - 26 Jobs2N2 Kick Off : $122k spent; zero benefits13Other : 0.109 $/bbl - 13 Jobs12Perforation : 0.786 $/bbl - 12 Jobs5Rig W/O : 17.521 $/bbl - 5 Jobs8SSSV : 0.074 $/bbl - 8 Jobs20Tubing Clean Out : 3.193 $/bbl - 20 Jobs37Zone Change : 0.282 $/bbl - 37 Jobs

0000000000000000000000

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Scorpion 02 Sol


Fishing : 0.216 $/bbl - 8 Jobs



N2 Kick Off : $122k spent; zero benefits



Rig W/O : 17.521 $/bbl - 5 Jobs


Tubing Clean Out : 3.193 $/bbl - 20 Jobs


Cuml Volume (MBBL boe) Oil + boeGas( Job Date Range = Year 2002 in Success sequence )

Cuml Cost (k$)


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West Java Field OverviewWest Java Reservoir OverviewWest Java Dual CompletionWhy redesign gas lift Process flow to redesign gas lift valves Summary

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West Java Overview

BP-West Java area is located offshore of the north of Java Island in Indonesia. Initial oil production was in 1971. West Java field covers an area of some 18,000 square-kilometers with total wells around 700. 75% of total wells are producing under gas lift system. Current production rate of 40,000 BOPD and 300 MMscfd of gas (~ 75 bopd/600 Mscfd per well)

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West Java Business Unit

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West Java Reservoir OverviewWest Java reservoir is multi stacked sandstone and carbonate reservoir.Mostly oil was producing from main, massive, baturaja and talang akar formation. The rest of formation are gas producing.Liquid productivity index is 1-5 bbl/day/psia, average TGOR of 500-1000 scf/stb and current liquid production about 500-1000 BLPD.No reservoir pressure maintenance

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West Java Dual Completionoptimise oil productionavoid cross flowbe able to allocate production dataperform well workdo reservoir monitoring Dual completion was selected to :

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Why redesign gas lift valves Periodically gas lift valve design is needed to : maintain liquid production due to declining reservoir pressure.response to the change of gas lift source pressure.increase gas injection rate due to increasing water cut.solve gas lift robbing problemLiquid production keep decliningGLV redesign was done

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Process flow to redesign Survey current gas lift performanceObtain field and reservoir dataMatching well test to estimate- gas oil ratio - productivity indexRedesign for best point of injection, setting valve pressure Optimize injection rate on short and long string

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Process flow to redesign Survey current gas lift performance

Gas lift gradient survey should be done prior to redesign gas lift to make sure there is no leaking in the tubing and to check gas lift performance.Dummy valves are leaking(~ 20% of wells)

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Process flow to redesign Field and Reservoir Data

To redesign gas lift, the following data is required :

Current reservoir pressure data Flowing gradient survey Well test data Latest gas lift valves report Setting pressure report Productivity Index Latest gas oil ratio

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Process flow to redesign Matching well test

Stable well test is selected for well test matching.For the dual completion, well test data does not give gas lift injection rate data.

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Process flow to redesign Matching well test

To estimate productivity index, well modeling is built using nodal analysis with the input :

total liquidwater cutflowing tubing pressure total GLR reservoir pressure

Injection rate estimated from

Qgas,inj = Qgas,total GORform x Qoil

Sensitivity on productivity index is performed to match liquid rate with well test.

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Process flow to redesign Matching well testProductivity index from well test matching is used to estimate gas oil ratio.

If GORform not available, then sensitivity on GLR until no intersection between IPR and tubing hydraulic was reached.

Then, current gas oil ratio could be calculated based on the result of the GLR sensitivity.

Gas liquid ratio with no intersection,GOR = GLR*Liquid/oil

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Process flow to redesign Design best point injection and setting pressure

Once productivity index and gas oil ratio could be estimated, the gas lift curve is generated to determine optimum gas injection rate.

Optimum injection rateShortLong

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Process flow to redesign Dual strings gas lift injection rate optimisation

Spreadsheet to check valve performance after new design is installed.

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Process flow to redesign Case I (operating valve depth and flowing tubing pressure are similar )

Gas robbing potentially occur To avoid gas robbing use similar port size

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Process flow to redesign Case II (operating valve depth and flowing tubing pressure are not similar )

Gas robbing potentially occurUse different port size to avoid gas robbing

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Process flow to redesign Example

Redesign Result

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Process flow to redesign Example

Well Test after and before gas lift redesignTarget: 6 redesigns/monthProduction~ 80 bopd increase Injection Gas~ 200 mscf/d decrease

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Summary Uncertainty on gas lift injection rate each string, current gas oil ratio and productivity index in dual strings completion could be estimated using nodal analysis.It is difficult to reach optimum gas lift injection rate in both string as gas injection rate in both string should be balance.Gas lift robbing is the main problem in dual completion but it could be avoided by:using similar port size in both string when flowing tubing pressure and operating injection point depth are similar.using different port size between short and long strings when flowing tubing pressure is different.Ideally, gas lift gradient survey is performed regularly to prevent gas lift robbing.

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Contact for further information:

Wahyu [email protected]

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gas lift redesign in dual strings completion wahyu jatmiko ( bp-indonesia ) herry subekti (...

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