Gas Lift Design Philosophy for Chevron’s Subsea Developments

Gas Lift Design Philosophy for Chevrons Subsea DevelopmentsShauna Noonan, Completions Engineering TeamChevron Petroleum Technology CompanyHouston, Texas

Presentation OutlineSingle Point Injection (pros and cons)Understanding the Stability IssuesUsing Transient ProgramsField examples: Kuito / Benguela-Belize-Tomboco fields, AngolaHebron Field, East Coast CanadaAlba field, North SeaExample of Whats Not RecommendedQuestions

Single Point Injection Using OrificeProshigher reliability than conventional completion using live valvesmeets zero intervention philosophy set for Chevrons subsea developmentsConsrequires a minimum gas injection rate for well stabilityrequires a higher injection pressurevalve erosion becomes a serious issue

The Challenge...Size the downhole orifice as big as possible and we can just control the gas injection rates from the FPSO - general comments heard from various Chevron engineers

THE DOWNHOLE CHOKE (aka orifice) CONTROLS THE RATE OF GAS INJECTION INTO THE TUBING, NOT THE SURFACE CHOKE!!!!!!!!

Gas Lift StabilityFor a single point system, there is a minimum surface injection rate required for the orifice to maintain sufficient annular backpressure (i.e. casing pressure consistently higher than the flowing tubing pressure) for continuous downhole gas injection.

Minimum Injection RatesThis minimum injection rate is a function of orifice size and flowing tubing pressure (aka wellhead pressure, PI, reservoir pressure, watercut, etc) What does happen at rates lower than this minimum injection rate?

The Challenge..If this stability issue exists, then how come I dont see this with my platform wells? - general comments from various Chevron engineersAnswer: Turns out they are not continuously injecting through the orifice. As these platform wells are completed with a conventional design (unloading valves), the well instability is dampened due to multipointing.

Predicting Stability Margins with Transient ProgramsOLGA is the primarily tool used within the industry for transient analysis, however it does not look at transient behavior between the surface and downhole injection chokes. DynaLift addresses the gas lift transient issue, but does a poor job of the flowline assessment. Hence, Chevron has to use both programs. Flowline/ Riser stability OLGAGas Lift stability DynaLift

OFFSHORE ANGOLA: Kuito and Benguela-Belize-Tomboco

System Overview - Kuito Development Area

Kuito 1A

Objectives of Gas lift StudyDetermine orifice size that will allow for stable production between 1.5 - 2.5 MMscfd for the 10 year life of the wellRecommend injection gas rates to minimize erosion and provide approximate time / procedures to unload the well.How will flowline slugging affect well stability?- information first presented at the 2000 Offshore Technology Conference, paper #11874

Field Parameters for Simulations

Tubing Size / Casing Size

4.5 / 9 5/8

Static Reservoir Pressure

2300 psig

Solution GOR

200 scf / bbl

API Gravity of Oil

20

Depth of Orifice

3690 feet TVD

Required Injection Rate

1.5 2.5 MMscfd

Available Injection Pressure

2220 psig

Simulation: Injection Rate vs Watercut

Port Size

(inches)

FWP

(psi)

Min Gas Rate (MMscfd)

17% wc

30% wc

50% wc

0.250

450

0.3

0.5

0.6

0.250

500

0.3

0.7

0.6

0.250

600

0.4

0.6

0.7

0.3125

450

0.6

1.0

1.0

0.375

450

1.2

1.0

1.3

Effect of Fluctuating Wellhead Pressureunstable

U-tube effect

In order to prevent erosion to the orifice, lets run two of them. Have the upper orifice the operating point and then run a REALLY large unloading orifice below it!- comments made by the reservoir engineering staff working on the projectTHE CHALLENGE ..

UPPER OPERATING ORIFICELOWER UNLOADING ORIFICEWHY THIS IDEA WILL NOT WORK .

Kuito UpdateField start-up Jan 2000Gas Lift injection began May 2000Serious Problems with Flowline StabilityEngineering currently working on next 11 producers .. Completed field testing to calibrate Olga model and the engineers using Olga and Dynalift are working as one unit.

System Overview - Subsea Well / Flowline Relationship

KU-A10

KU-A11

KU-A12

KU-A07

KU-A08

KU-A09

KU-A06

KU-A05

KU-A04

KU-A01

KU-A02

KU-A03

Test Line

Flowline 2

Flowline 1

Manifold

Wells producing to Flowline 2 (B Train)

Wells producing to Flowline 1 (A Train)

System Overview - Flowline and Riser Profile

BENGUELA-BELIZE-TOMBOCO PROPOSED DEVELOPMENT- ONLY SUBSEA WELLS EXPECTED ARE 2 WATER SOURCE WELLS EACH SUPPLYING 40,000 BWPD

Area Map

*

337 mmBBLS140 mBOPD

BBT team wanted to lift 40,000 bwpd using gas lift

valve

"Elapsed TimeTV DepthStatusMscfdBlpdPcfdPtfdPtroTempAPI C

5" 8724Open071174831393601862775

10" 8724Open097665841413201863808

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780" 8724Open619303410332001860

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795" 8724Open612403418333001860

800" 8724Open614503419333301860

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815" 8724Open579703411333301860

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835" 8724Open469803397334901860

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Chart1

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COULD NOT INCREASE DUE TO 3000 PSI INJECTION PRESSURE LIMITATION IN DYNALIFT

Well Performance

Operating Pressure

Injection Gas Rate (mscfd)

Total Fluid Produced (bfpd)

Injection Pressure at Wellhead (psi)

Benguela Water Well (50 psi sep / WHP, 0.5" orifice at 8725 ft TVD, Pr=3000 psi)

flow

"Elapsed TimePwhiPwhfSTB/dayMscfd outMscfd inTVD AnnulusTVD TubingTVD ReservoirPbhfRes InflowTemp wh"

516375000150002236.26836688003918-7176

1027165089730150002692.453088004158-21577

153000509888003340.865088004166-22077

20300050944509183741.086088004166-22077

253000509033004139.295088004166-22077

303000508661004484.679088004166-22077

353000508248004849.916088004166-22077

402999507874005165.401088004166-22077

453000507459005497.404088004166-22077

503000507083005782.745088004166-22077

552999506672006081.6088004164-21877

603000506305006337.184088004162-21777

65300050589409186603.145088004161-21677

703000505520006828.886088004160-21677

753000505106007061.872088004159-21577

803000504729007257.633088004158-21577

853000504317007457.384088004156-21477

903000503940007623.027088004155-21377

953000503524007789.387088004154-21277

1003000503144007924.734088004153-21277

1053000502725008057.56088004152-21177

1103000502335008162.486088004152-21177

1153000501916008261.386088004151-21077

1203000501514008335.181088004151-21177

1253000501084008399.774088004150-21077

130300050667008441.732088004150-21077

135300050159008469.186088004150-21077

140300050-152008477.295088004149-20977

145300050-216008477.741088004149-20977

150300050-216008477.741088004149-20977

155300050-216008477.741088004149-20977

160300050-216008477.741088004149-20977

1653000500008481.903388004146-20877

1703000500008486.321288004144-20677

1753000500008493.4221688004143-20677

1803000500008501.3051588004140-20477

1853000500008505.6912488004137-20277

1903000500008510.7083188004135-20177

1953000500008519.2413188004134-20077

2003000500008524.5613588004131-19977

2053000500008528.9234488004128-19777

2103000500008536.344588004128-19777

2153000500008542.6234988004125-19577

2203000500008546.9395588004122-19377

2253000500008552.856288004121-19377

2303000500008560.3046088004119-19177

2353000500008564.3076988004116-19077

2403000500008569.6687488004115-18977

2453000500008577.4227488004113-18877

2503000500008581.4058088004110-18677

2553000500008586.5578888004109-18677

2603000500008593.7928788004107-18477

2653000500008597.8719588004104-18377

2703000500008603.1929988004104-18277

2753000500008610.6589988004101-18177

2803000500008613.41210888004098-17977

2853000500008620.17211188004098-17977

2903000500008626.14511188004095-17777

2953000500008629.31312288004094-17677

3003000500008637.11211988004092-17577

3053000500008641.13612588004089-17377

3103000500008645.36813288004089-17377

3153000500008653.10113188004086-17277

3203000500008655.36314088004083-17077

3253000500008662.27414188004083-17077

3303000500008667.15614388004080-16877

3353000500008670.89315288004079-16877

3403000500008678.09415088004077-16677

3453000500008680.41616088004074-16577

3503000500008687.82415888004074-16477

3553000500008691.08216588004071-16377

3603000500008695.56417088004071-16377

3653000500008703.19616888004068-16177

3703000500008704.46417988004066-16077

3753000500008712.66617688004065-15977

3803000500008713.9518688004063-15877

3853000500008721.32218588004062-15777

3903000500008723.80919288004061-15677

3952997500015898724.05520788004050-15077

4002992500025948724.05521988004034-14077

4052984500035508724.05523288004011-12677

4102977500042988724.05524288003988-11377

4152970500050168724.05525288003966-10077

4202963500055688724.05526088003947-8877

4252956500060698724.05526888003924-7477

4302949500065308724.05527488003903-6277

4352942500069618724.05527988003882-4977

4402936500073098724.05528388003863-3877

4452929500076958724.05528688003841-2477

4502923500080108724.05528788003822-1477

4552916500083128724.05528888003806-477

4602912500085568724.0552798800379820077

4652910500086528724.0552518800379635277

4702909500086998724.0552158800379448877

4752908500087468724.0551668800379354477

4802908500087468724.0551178800379357677

4852907500087938724.055608800379264077

4902907500087938724.05558800379264077

4952912511161086048724.0550880037861128104

5002916511771083628724.0550880037781720115

5052920512487081638724.0550880037702416126

5102921513278081128724.0550880037603184133

5152921514324080618724.0550880037484200140

5202921515337081128724.0550870237355337145

5252918516813082138724.0550839037176811149

5302915518395084118724.0550803636988392152

53529095110490086528724.05507552367310484155

54029035112783089328724.05507012364512774158

54528955215859093358724.05506279360815846160

55028855219796097218724.05505457356019774163

555286653296710104478724.05504219344029625166

560283988382008253114798724.05502073333738141170

5652821105382338968120928724.05500332239360171

57028121113874510250124198724.05500331639887172

57528071233864912783125788724.05500331739788172

58028061343832913067126108724.05500332139458173

58528061313832112757126108724.05500332139450173

59028061313832112757126108724.05500332139450173

59527971313832112609106458724.05500332139450173

60027781303832112609111438724.05500332139450174

60527671303830512609114068724.05500332139434174

61027621303818512609115008724.05500332339310174

61527601293806512422115708724.05500332439187174

62027591273800112039115938724.05500332539121174

62527591203800111607115938724.05500332539121174

63027591233800111610115938724.05500332539121174

6352757123380011161094978724.05500332539121174

6402734123380011158799408724.05500332539121174

64527211233800111587101878724.05500332539121174

65027141233789711587102928724.05500332639014174

65527111223770511555103608724.05500332938816174

66027101203764911092103778724.05500332938758174

66527091183758510791103948724.05500333038692174

67027091163760110423103948724.05500333038709173

67527081153760110428104118724.05500333038709173

6802701115376011041185028724.05500333038709173

6852680115376011041187958724.05500333038709173

6902670115375371041189378724.05500333138643173

6952664115373451041190138724.05500333338445173

7002662114371371027090398724.05500333638231173

705266211237025974190398724.05500333738116173

710266210936961943890398724.05500333838050173

715266210536921902590398724.05500333838009173

720264710636961900873748724.05500333838050173

725263210636905900875208724.05500333937992173

730262610636761900875868724.05500334037844173

735262310636481900876158724.05500334437556173

740262310536217865276158724.05500334737284173

745262410136065817376058724.05500334937128173

75026249936001786176058724.05500335037062173

75526259735985766875968724.05500335037045173

76026259435921756575968724.05500335136979173

76526219635921756860288724.05500335136979173

77026059635921756861458724.05500335136979173

77525989635785756862028724.05500335336839173

78025959635537756862238724.05500335636584173

78525969635033753362168724.05500336236065173

79025989234793692762028724.05500336535818173

79526018934577651961818724.05500336835596172

80026018734521628061818724.05500336835538172

80526028534417607061738724.05500337035431172

81026038634401607061668724.05500337035415172

81525958634401607048538724.05500337035415172

82025858634401617549138724.05500337035415172

82525818634297617549358724.05500337135307172

83025818633953617549358724.05500337634953172

83525848533313605449198724.05500338434294172

84025898332913544848978724.05500338933883172

84525928032617508748758724.05500339233578172

85025957832481489848648724.05500339433438172

85525967732401464048538724.05500339533356172

86025967632401458648538724.05500339533356171

86525867732401463337858724.05500339533356171

87025817732401471738028724.05500339533356171

87525807732401486838108724.05500339533356171

88025827831961486838068724.05500340032903171

88525877731153467237818724.05500341132071171

89025947430641410437568724.05500341731544171

89525977130385383837398724.05500342031280171

90026007130009372937278724.05500342530893171

90526046929761346937108724.05500342830638171

91026056829761324337058724.05500342830638171

91526056829761343637058724.05500342830638171

92025976929761352628528724.05500342830638171

92525956829785349628588724.05500342830662171

93025956929841361328588724.05500342730720171

93525956929841371128588724.05500342730720171

94025997028977371128498724.05500343829831171

94526096728145301028138724.05500344828974170

95026116428025028078724.05500345028850170

95526126527825285428038724.05500345228645170

EAST COAST CANADA: HEBRON

Asset Description

Field Location

Jeanne dArc Basin offshore Newfoundland.CCR Frontier: 28% interest in Hibernia, 1% in TN. Other fields discovered & have exploration prospects in JDA, Flemish Pass and offshore Nova Scotia.Hebron asset approx 325km ESE of St. Johns, Nfld.Approx. 35km from Hibernia, 10km (adjacent to) Terra Nova.

HEBRON ARTIFICIAL LIFT STUDYDETERMINE METHOD OF LIFT (ESPs or GAS LIFT)1870 m TVD, 21 API, 50 m3/m3Emulsions / Hydrates serious issuesFront-End engineering only concerned with horsepower / production relationship . not stabilityUsed both static (for emulsions) and transient programs for the gas lift portion.

SAMPLE CURVE FROM HEBRON

Example of a Well Performance Curve From Transient Analysis

8000

9000

10000

11000

12000

13000

14000

15000

16000

17000

0

2000

4000

6000

8000

10000

12000

14000

Injection Rate (mscfd)

Production rate (bfpd)

Optimum Efficiency Range for Gas Lift

(as defined by CPTC)

Maximum Gas Lift Rate

for a 0.375 orifice

Minimum Gas Injection Point

Example: Effect of Wellbore Step OutFor every set of conditions, an optimum and maximum case was done

Chart3

29395244294052443180421131804211

29202971286030032110211420752183

3500 m

1100 m

1100 0.7 / 0%

1100 0.7M / 0%

1100 0.415 / 35%

1100 0.415M / 35%

3500 0.415 / 35%

3500 0.415M / 35%

3500 0.415 / 75

3500 0.415M / 75%

m3/d fluid

Sheet1

PI (m3/m3)ESP m3/d fluidGas m3/d fluid(Q/hp) GL

0.415BC222722730.3

0.415M421323680.4

0.7270829940.2

0.70M532630030.5

Sheet1

&A

Page &P

ESP m3/d fluid

Gas m3/d fluid

(Q/hp) GL

PI (m3/m3)

m3/d fluid

Q/hp GLQ/hp ESP

Sheet2


75 / 0.415270323000.2

75/0.415M452824800.4

75 / 0.7298728800.3

75/0.7M540531300.4

Sheet2

&A

Page &P

ESP m3/d fluid

Gas m3/d fluid

(Q/hp) GL

PI

m3/d

Q/hp GLQ/hp ESP

Sheet3

StepoutPI (m3/m3)ESP m3/d fluidGas m3/d fluid(Q/hp) GL

11000.7 / 0%293929200.3

11000.7M / 0%524429710.5

11000.415 / 35%294028600.3

11000.415M / 35%524430030.5

35000.415 / 35%318021100.4

35000.415M / 35%421121140.6

35000.415 / 75318020750.5

35000.415M / 75%421121830.5

Sheet3

&A

Page &P

ESP m3/d fluid

Gas m3/d fluid

(Q/hp) GL

PI/water cut

m3/d fluid

Q/hp GLQ/hp ESP

1100 m

Sheet4


0.7 / 0293929200.3

0.7/0M524429710.5

0.415 / 35294028600.3

0.415 / 35M524430030.5

0.415 / 35318021100.4

0.415 / 35M421121140.6

0.415 / 75318020750.5

0.415 / 75M421121830.5

Sheet4

000

000

000

000

&A

Page &P

ESP m3/d fluid

Gas m3/d fluid

(Q/hp) GL

PI/water cut

m3/d fluid

Q/hp GLQ/hp ESP

3500 m

Sheet5

PIESP m3/d fluidGas m3/d fluidQ/hp

0.415213821380.3

0.415421122880.5

0.7257728090.2

0.7524428920.4

0.7429625110.3

Sheet5

000

000

000

000

000

&A

Page &P

ESP m3/d fluid

Gas m3/d fluid

Q/hp

PI

m3/d fluid

Q/hp GLQ/hp ESP

Sheet6

PI/water cutm3/d fluidm3/d fluidQ/hp) GL

0.415 / 25222722730.3

0.415 / 25M421323680.4

0.7 / 25270829940.2

0.415 / 25333929500.5

0.415 / 25421131000.3

0.7 / 254292

Sheet6

000

000

000

000

000

000

&A

Page &P

m3/d fluid

m3/d fluid

Q/hp) GL

PI/water cut

m3/d fluid

Q/hp GLQ/hp ESP

Alba Field - North Sea

SAMPLE CURVE FOR ALBA

THRU VALVE

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3672

2831

2476

1919

2008

1669

1652

1912

1642

1662

1671

1923

1699

1728

1936

1739

1748

1791

1436

1172

1121

1132

1140

1151

1260

1511

890

0

0

0

0

872

1097

1133

1128

1246

1329

1491

1714

2180

3221

3683

3150

2686

2252

1892

1646

1499

1465

1482

1498

1498

1498

1656

1826

1960

2026

2038

2050

2316

2490

2595

2653

2698

2716

2724

2733

2838

3083

3256

3360

3424

3467

3497

3521

3548

3557

3573

3580

3580

3587

3587

3755

3974

4124

4230

4301

4355

4402

4429

4451

4473

4500

4494

4500

4506

4693

4901

5027

5128

5213

5269

5307

5341

5375

5385

5398

5407

5411

5419

5427

UNLOADING WELL

UNSTABLE

Elapsed Simulation Time (minutes)

Injected Gas through the Orifice downhole (mscfd)

Alba A

valve

"Elapsed TimeTV DepthStatusMscfdBlpdPcfdPtfdPtroTempAPI C

5" 4000Open017172536219401431714

10" 4000Open015102564230001431507

15" 4000Open013072596239801431305

20" 4000Open011362626247701431133

25" 4000Open0989266025470143987

30" 4000Open010862694255601431083

35" 4000Open011942723255601431191

40" 4000Open012872750255601431284

45" 4000Open013542771255601431352

50" 4000Open014102789255601431407

55" 4000Open014572805255601431454

60" 4000Open014922817255601431489

65" 4000Open015202827255601431517

70" 4000Open015482837255601431545

75" 4000Open015722846255601431569

80" 4000Open015892852255601431585

85" 4000Open016052858255601431601

90" 4000Open016122861255601431609

95" 4000Open016182863255601431615

100" 4000Open016182863255601431615

105" 4000Open016152862255601431612

110" 4000Open016122861255601431609

115" 4000Open016052858255601431601

120" 4000Open015942854255601431591

125" 4000Open015832850255601431580

130" 4000Open015512838255601431548

135" 4000Open015092823255601431506

140" 4000Open367202728253501430

145" 4000Open283102627251201430

150" 4000Open247602562247401430

155" 4000Open191902516244701430

160" 4000Open200802482243501430

165" 4000Open166902452241001430

170" 4000Open165202426237001430

175" 4000Open191202401235901430

180" 4000Open164202375231901430

185" 4000Open166202351229401430

190" 4000Open167102326228101430

195" 4000Open192302302225401430

200" 4000Open169902276222901430

205" 4000Open172802252220301430

210" 4000Open193602227216401430

215" 4000Open173902202215101430

220" 4000Open174802177212401430

225" 4000Open179102151209501470

230" 4000Open143602130209301560

235" 4000Open117202116209101620

240" 4000Open112102111208801660

245" 4000Open113202111208701670

250" 4000Open114002109208701680

255" 4000Open115102109208401690

260" 4000Open126002107207701690

265" 4000Open151102099205201700

270" 4000Open89002090207801700

275" 4000Open BC002115211801700

280" 4000Open BC002157216701700

285" 4000Open BC002201221901700

290" 4000Open BC002252226301650

295" 4000Open87202297228501620

300" 4000Open109702314229401610

305" 4000Open113302323230201610

310" 4000Open112802331231001620

315" 4000Open124602336231101630

320" 4000Open132902338230901650

325" 4000Open149102337230001670

330" 4000Open171402327227701680

335" 4000Open218002308222301690

340" 4000Open322102266206301700

345" 4000Open368302186190901710

350" 4000Open315002109190401710

355" 4000Open268602053190401710

360" 4000Open225202014191001710

365" 4000Open189201991191901710

370" 4000Open164601981192701710

375" 4000Open149901978193301710

380" 4000Open146501979193601710

385" 4000Open148201980193601710

390" 4000Open149801981193601710

395" 4000Open149801981193601710

400" 4000Open149801981193601710

405" 4000Open165601991193601710

410" 4000Open182602003193601710

415" 4000Open196002010192701710

420" 4000Open202602012192901710

425" 4000Open203802013192901710

430" 4000Open205002014192901710

435" 4000Open231602032192801710

440" 4000Open249002048191701710

445" 4000Open259502056191901710

450" 4000Open265302061191201710

455" 4000Open269802064191501710

460" 4000Open271602066191501710

465" 4000Open272402067191501710

470" 4000Open273302068191501710

475" 4000Open283802080191001710

480" 4000Open308302107190701710

485" 4000Open325602126190301710

490" 4000Open336002138190401710

495" 4000Open342402147190401710

500" 4000Open346702153190401710

505" 4000Open349702157190401710

510" 4000Open352102160190301710

515" 4000Open354802164189901710

520" 4000Open355702165189801710

525" 4000Open357302166190101710

530" 4000Open358002167190101710

535" 4000Open358002167190101710

540" 4000Open358702168190101710

545" 4000Open358702168190101710

550" 4000Open375502194190101710

555" 4000Open397402227189701710

560" 4000Open412402252189601710

565" 4000Open423002269189401710

570" 4000Open430102282189401710

575" 4000Open435502292189401710

580" 4000Open440202301189401710

585" 4000Open442902306189401710

590" 4000Open445102310189301710

595" 4000Open447302314188901710

600" 4000Open450002316189301710

605" 4000Open449402318189301710

610" 4000Open450002319189301710

615" 4000Open450602320188901710

620" 4000Open469302356189101710

625" 4000Open490102396189001710

630" 4000Open502702426188901710

635" 4000Open512802448188401710

640" 4000Open521302466188701710

645" 4000Open526902479188701710

650" 4000Open530702488188701710

655" 4000Open534102496188701710

660" 4000Open537502501188201710

665" 4000Open538502506188601710

670" 4000Open539802509188501710

675" 4000Open540702511188101710

680" 4000Open541102512188101710

685" 4000Open541902514188501710

690" 4000Open542702516188501710

WELL PERFORMANCE

02484

02393

02335

02293

02262

02235

02211

02188

02165

02143

02120

02098

02075

02052

02030

02007

01985

01962

01946

5201939

9161940

13121940

19341941

28741942

42791941

68651934

79261927

74301951

64031990

47712030

27092073

13702110

9732124

8602132

7922140

7932146

9062149

16172148

32082141

60492125

121902086

172902013

174101944

174001893

172301858

169901837

167801828

165901826

165001827

165001828

165001828

165001828

165001828

165001837

165001848

166101854

167001856

167001857

167001857

167401875

169201888

170001896

170401900

171001903

171001904

171001906

171001907

171101918

172101942

173401959

174001970

174001978

174101984

174201989

174401992

174401994

174301995

175001996

175001997

175001997

175001998

175001998

175002022

176002052

176302074

177002090

177002102

177002112

177002119

177002124

177102128

177202131

177202133

177202135

177302136

177302137

178002170

178102206

178202234

178602254

179002270

179002282

179002291

179002298

179202303

179202307

179302309

UNSTABLE

Maximum Injection for a 0.3125" orifice

Minimum injection rate required for stability

CPTC's selection for optimum operating point

Well Performance

Operating Pressure

Injection Gas Rate (mscfd)

Total Produced Fluids (bfpd)

Gas Injection Pressure at the wellhead (psi)

Alba A: (0% watercut , 700 psi whp)

flow

"Elapsed TimePwhiPwhfSTB/dayMscfd outMscfd inTVD AnnulusTVD TubingTVD ReservoirPbhfRes InflowTemp wh"

51564700009602075.27180763733279-892

101624700009522159.20657263733388-1992

151686700009422237.50735463733488-2992

201740700009322301.10918063733569-3792

251795700009222358.3422463733641-4492

301848700101509112411.524063733659-4693

351899700112908992470.776063733659-4693

401950700122208872537.615063733659-4693

451997700129308752606.596063733659-4693

502042700135108622678.959063733659-4693

552086700139708492754.071063733659-4693

602127700143508362831.353063733659-4693

652167700146308232910.407063733659-4693

702205700149108102984.8063733659-4693

752241700151607963057.812063733659-4693

802274700153407833129.382063733659-4693

852308700154807703204.215063733659-4693

902340700155907563279.619063733659-4693

952370700156407433355.381063733659-4693

1002399700156707293431.337063733659-4693

1052427700156507153507.296063733659-4693

1102454700156007023583.094063733659-4693

1152480700155406883658.627063733659-4693

1202504700154306753733.759063733659-4693

1252528700153006613808.376063733659-4693

1302550700150506483896.357063733659-4693

1352572700146206343993.133063733659-4693

1402484700006844002.592763733638-4493

1452393700007304002.5921363733614-4193

1502335700009854002.5921963733589-3993

15522937000010084002.5922563733564-3693

16022627000010244002.5923063733537-3493

16522357000010384002.5923563733512-3193

17022117000010504002.5923963733487-2993

17521887000010614002.5924363733462-2693

18021657000010714002.5924763733435-2493

18521437000010814002.5925063733409-2193

19021207000010914002.5925363733384-1893

19520987000011004002.5925663733357-1693

20020757000011094002.5925863733332-1393

20520527000011184002.5926063733305-1093

21020307000011274002.5926163733280-893

21520077000011354002.5926263733253-593

22019857000011434002.5926363733227-393

22519627000011514002.5926363733202093

23019467000011574002.592386373319726093

2351939700520011594002.592063733195460114

2401940701916011594002.592063733192810126

24519407011312011594002.5920634231881312134

25019417011934011584002.5920626931831934139

25519427012874011584002.5920616031752872143

26019417014279011584002.5920599931624275147

26519347016865011604002.5920574931396853152

27019277017926178111634002.5920539531307905154

27519517017430134011564002.5920504631347407155

28019907016403134011424002.5920473131446378156

28520307014771150912694002.5920447531584750154

29020737012709134212504002.5920430931762703140

29521107011370109213784002.5920422131881368131

300212470197380013714002.592041693191973131

305213270186058213664002.592040873192859126

310214070179249213624002.592039973193792128

315214670179337813594002.592039033193792130

320214970190616513574002.592038043192905133

32521487011617013574002.5920364531861617137

33021417013208013614002.5920333531723223142

33521257016049013704002.5920271431466141148

340208670112190013904002.59201383308812677153

345201370317290604514264002.59200302719553157

350194470417410791414574002.59200302619688159

355189370517400770014794002.59200302619677160

360185870417230714414924002.59200302819485161

365183770416990662715004002.59200303019213161

370182870416780616115044002.59200303218976161

375182670316590580515054002.59200303418761162

380182770316500547415044002.59200303518659162

385182870316500549215044002.59200303518659162

390182870316500550715044002.59200303518659162

395182870316500550815044002.59200303518659162

400182870316500550815044002.59200303518659162

405183770316500554720674002.59200303518659162

410184870316500554720604002.59200303518659162

415185470316610598120574002.59200303418784162

420185670316700608120564002.59200303318885162

425185770316700609620554002.59200303318885162

430185770316700609920554002.59200303318885162

435187570316740615827774002.59200303318931162

440188870316920620227654002.59200303119134162

445189670417000671027594002.59200303019225162

450190070417040679627564002.59200303019270162

455190370417100684727534002.59200302919338162

460190470417100686227524002.59200302919338162

465190670417100687627514002.59200302919338162

470190770417100688327504002.59200302919338162

475191870417110693136924002.59200302919349162

480194270417210696536634002.59200302819462162

485195970417340744436424002.59200302719609162

490197070517400757536294002.59200302619677162

495197870517400763836194002.59200302619677162

500198470517410769236114002.59200302619688162

505198970517420773236064002.59200302619700163

510199270517440776336024002.59200302619722163

515199470517440778336004002.59200302619722163

520199570517430779735974002.59200302619711163

525199670517500782635964002.59200302519790163

530199770517500783135954002.59200302519790163

535199770517500783235954002.59200302519790163

540199870517500783935934002.59200302519790163

545199870517500784035934002.59200302519790163

550202270517500795647584002.59200302519790163

555205270517600821247034002.59200302419903163

560207470517630837946624002.59200302419937163

565209070617700851446294002.59200302320016163

570210270617700859046064002.59200302320016163

575211270617700864945884002.59200302320016163

580211970617700869045744002.59200302320016163

585212470617700872345624002.59200302320016163

590212870617710875245544002.59200302320028163

595213170617720877945484002.59200302320039163

600213370617720879245444002.59200302320039163

605213570617720880245404002.59200302320039163

610213670617730881245384002.59200302320050163

615213770617730881945364002.59200302320050163

620217070617800896659034002.59200302220129163

625220670617810917957994002.59200302220141163

630223470717820933357154002.59200302220152163

635225470717860945456504002.59200302120197163

640227070717900954656004002.59200302120242163

645228270717900960655654002.59200302120242163

650229170717900964955334002.59200302120242163

655229870617900968455134002.59200302120242163

660230370517920971554934002.59200302120265163

665230770517920973754844002.59200302120265163

670230970517930975454744002.59200302120276163

675231270517930976454644002.59200302120276163

680231370517920976954604002.59200302120265163

685231570517930977854544002.59200302120276163

690231670517930978754504002.59200302120276163

EFFECT OF WATERCUT / WELLHEAD PRESSURE FOR ALBA700 PSI750 PSI500 PSI700 PSI750 PSI500 PSIPr=3200 psiPr=2800 psi0%40%95%0%40%95%

Chart1

30300132.0132013201

26000153.8461538462

27000148.1481481481

21000190.4761904762

16000250

18500216.2162162162

&A

Page &P

Reservoir Pressure (psi) / Watercut

Total Production at 4000 mscfd injected gas (bfpd)

Injected Gas to Produced Fluid Ratio (scf/bbl)

Sheet1

minmaxminmaxGLR

32003200 / 0%700274003030012404000132

3200 / 40%750179002600011804000154

3200 / 95%500179002700013404000148

28002800 / 0%700160002100013104000190

2800 / 40%75082001600011404000250

2800 / 95%50091001850013104000216

Gas-Lift

Alba Gas-Lift Analysis

Required Data

P.I. = 100b/d/psi for all cases

Operating Range for Stable ProductionOptimal Operating Point**

Res. Press/psiw/cfthp/psiorifice depth/ftorifice size/intbg size/inmin/max production (bfpd)min/max injection rate (mscfd)bfpd / mscfd

3200070050000.3125727400 / 3030001240 / 400028800 / 1700

4075050000.3125717900 / 260001180 / 400020700 / 1800

9550050000.3125717900 / 270001340 / 400023400 / 2500

Operating Range for Stable ProductionOptimal Operating Point**

Res. Press/psiw/cfthp/psiorifice depth/ftorifice size/intbg size/inmin/max production (bfpd)min/max injection rate (mscfd)bfpd / mscfd

2800070050000.3125716000 / 210001310 / 400019000 / 2500

4075050000.312578200 / 160001140 / 400012000 / 2200

9550050000.312579100 / 185001310 / 400014500 / 2500

Notes:

tbr:to be recommended: please detail optimal selection for operational flexibility over rate & water-cut range

*Include plots and raw data of production rate & gas injection pressure versus gas-injection rate for 0,1,2,3,4,5mmscf/d

**Verify optimal operating point i.e. production rate versus gas injection pressure versus gas injection rate

include flowing bottom hole pressure in each case

refer to attached memo for further deliverable explanation and required operating ranges

ESP 5.5"

Alba ESP Analysis

Required Data

5.5" TUBING


Operating ParametersDefinition of Operating Envelope (Upthrust / Down Thrust)

w/cfthp/psiRate/bfpdHPFrequency/HzPIPMin Rate/bfpdFreq @min rate/HzMax Rate/bfpdFreq @max rate/HzComments

3200089010000NANANA

120003134925221093045180006864-KC20000 562

15000534582490

20000NANANA

320040102010000NANANA

120003754624901176045170005887-KC20000 562

15000591532457

20000NANANA

32009568010000NANANA

12000NANANA1474045200006468-20000 562

15000430512409

20000868642356

Definition of Operating Envelope (Upthrust / Down Thrust)

Res. Press/psiw/cfthp/psiRate/bfpdHPFrequency/HzPIPMin Rate/bfpdFreq @min rate/HzMax Rate/bfpdFreq @max rate/HzComments

2800089010000NANANA

120004554821241064545158005895-KC20000 562

15000709552092

20000NANANA

280040102010000NANANA

1200050545209112000451430050122-KC20000 562

15000NANANA

20000NANANA

28009568010000NANANA

120004214820421027045169005883-KC20000 562

15000629542010

20000NANANA

NA: NOT WITHIN EQUIPMENT CAPABILITY

Notes:

The above tables should be completed for the optimal pump / motor i.e. all performance parameters assume the same pump / motor

Please define the optimum pump / motor / seal, including number of stages

If necessary two pumps may be identified i.e. a pre and post work-over pump where the latter pump is optimised for high water cut production

For each reservoir pressure case a pump operating envelope should be annotated with pump operating points over well life

Include flowing bottom hole pressure in each case

Assume max inclination of pump 65deg.


ESP 7"

Alba ESP Analysis

Required Data7" TUBING


Operating ParametersDefinition of Operating Envelope (Upthrust / Down Thrust)

w/cfthp/psiRate/bfpdHPFrequency/HzPIPMin Rate/bfpdFreq @min rate/HzMax Rate/bfpdFreq @max rate/HzComments

3200089010000NANANA

12000NANANA1262045192506573-KC20000 562

15000439522490

20000NANANA

320040102010000NANANA

12000NANANA12280451825059.586-KC20000 562

15000518512457

20000NANANA

32009568010000NANANA

12000NANANA1231045205006663-KC20000 562

15000405512409

20000814642356

Definition of Operating Envelope (Upthrust / Down Thrust)

Res. Press/psiw/cfthp/psiRate/bfpdHPFrequency/HzPIPMin Rate/bfpdFreq @min rate/HzMax Rate/bfpdFreq @max rate/HzComments

2800089010000NANANA

1200039147212411325 (upthrust)45171005994-KC20000 562

15000599532092

20000NANANA

280040102010000NANANA

12000NANANA12655451520050123-KC20000 562

15000674492059

20000NANANA

28009568010000NANANA

1200038345204211750 (upthrust)45177505789-KC20000 562

15000552502010

20000NANANA

NA: NOT WITHIN EQUIPMENT CAPABILITY

Notes:

The above tables should be completed for the optimal pump / motor i.e. all performance parameters assume the same pump / motor

Please define the optimum pump / motor / seal, including number of stages

If necessary two pumps may be identified i.e. a pre and post work-over pump where the latter pump is optimised for high water cut production

For each reservoir pressure case a pump operating envelope should be annotated with pump operating points over well life

Include flowing bottom hole pressure in each case

Assume max inclination of pump 65deg.


EXISTING SUBSEA GAS LIFT COMPLETION THAT CHEVRON DOES NOT RECOMMEND!!the name / location has been removed to protect the innocent 16/64th valve20/64th valve28/64th valveDUMMY VALVE !!In addition, the flow conduit ID goes from 3.5 (gravel pack completion) to 9 5/8 (for 700 m / 2300 ft) to 4.5 (upper completion)Available gas injection pressure = 1300 psi from 3500 m away

32-5-4

CUSTOMER : CACTMike KynochCasingTubingTubingTubing

WELL # : HZ-32-5-4SIZE9 5/8"4 1/2"3 1/2"2 7/8"

FIELD : HUI ZHOUPage 1 of 2.Weight47.0012.759.306.40

PROVINCE : SHENZHENGradeN-8013cr13cr13cr

COUNTRY : CHINAThreadButtressNK3SBNK3SBNVAM

DATE : 1st April 1999Prepared by: MIKE KYNOCH

ITEMDESCRIPTIONLengthO DI DDEPTH

NANHAI # 2 ELEVATION ( ROTARY TABLE TO DATUM DEPTH )135.640-0.000

1FMC ACTIVE TUBING HANGER LENGTH0.49018.6403.913135.640

2FMC HANGER BELOW LOAD SHOULDER0.78818.6403.913136.130

34 1/2" NK3SB BOX x PIN PUP JOINT1.1354.5003.958136.918

44 1/2" NK3SB BOX x PIN TUBING ( 11 JOINTS )105.5204.5003.958138.053


6FLOW COUPLING 4 1/2" NK3SB BOX x PIN1.8255.1753.958248.048

73.81" 'TE-5' SAFETY VALVE WITH 'B' NIPPLE PROFILE (824-83-3851 193818-1)1.6357.1003.810249.873




114 1/2" 'FMHO-1.5' SIDE POCKET MANDREL WITH 16/64ths GAS LIFT VALVE.2.5557.3503.937657.483



Mike Kynoch144 1/2" NK3SB BOX x PIN PUP JOINT1.7904.5003.958945.378


Mike Kynoch164 1/2" NK3SB BOX x PIN PUP JOINT1.7854.5003.958949.723







234 1/2" 'FMHO-1.5' SIDE POCKET MANDREL WITH DUMMY VALVE.2.5557.3503.9371246.773


254 1/2" NK3SB BOX x PIN TUBING JOINT9.5704.5003.9581251.113


273.75" 'AOF' SUR-SET NIPPLE PROFILE (801-94-5609 701644 s/n.1)0.6455.1853.7501261.918


29190-48 'LE-22' LOCATOR SEAL ASSEMBLY WITH 60,000 lbs. SHEAR RING0.2706.7003.9381264.888

30194-48 'SBG-3' HYDRAULIC SET PERMANENT PACKER (409-06-1950)1.1908.1204.8751265.158

31190-48 SEAL BORE EXTENSION2.5306.2304.8751266.348

32SEAL BORE EXT. CROSSOVER WITH 6 5/8" NEW VAM PIN0.1508.0355.7911268.878

33CROSSOVER 6 5/8" NEW VAM BOX x 4 1/2" NK3SB PIN0.2507.3953.9581269.028




373.688" 'AOF' SUR-SET NIPPLE PROFILE (801-94-5408 17-1k s/n.1)0.5055.3353.6881281.333


394 1/2" NK3SB BOX WIRELINE ENTRY GUIDE0.1505.2153.9581291.343

12 each Cross coupling and 12 each mid-joint Lasalle control line protectors run.Bottom1291.493

COMPLETION STRING WEIGHTS

PICK-UP WEIGHT: 155,000 LBS.Note: 2.25" 'RZG' Blanking Plug, set inside modified tree cap.

SLACK-OFF WEIGHT: 155,000 LBS.

BLOCKS WEIGHT: 110,000 LBS.

NOTE: PLEASE SEE PAGE 2 FOR ITEMS 40 THROUGH 84 AND 'A' THROUGH 'K'.

5 1/2" 230 Micron Excluder Screen with 12-20 USM Sand Size.

ITEM 'i' 2.31" 'F' Nipple contains, a 2.31" 'FGD' Choke with 28/64ths ceramic bean.

LOWER ZONE INNER STRING.

CUSTOMER : CACTMike KynochCasingTubingTubingTubing

WELL # : HZ-32-5-4SIZE9 5/8"4 1/2"3 1/2"2 7/8"

FIELD : HUI ZHOUPage 2 of 2.Weight47.0012.759.306.40

PROVINCE : SHENZHENGradeN-8013cr13cr13cr

COUNTRY : CHINAThreadButtressNK3SBNK3SBNVAM

DATE : 1st April 1999Prepared by: MIKE KYNOCH

ITEMDESCRIPTIONLengthO DI DDEPTH

40MODEL 'B' WIRELINE ENTRY GUIDE SIZE 8 1/8" X 3 1/2" EUE 8rd PIN DOWN0.2308.1252.9922002.960

413 1/2" EUE 8rd BOX x PIN PUP JOINT1.8703.5002.9922003.190

42190-47 'S-22' SNAP LATCH SEAL ASSEMBLY WITH 3 1/2" EUE 8rd BOX UP0.3306.0003.0002005.060

42a190-47 SPACER SEAL ASSEMBLY WITH 1/2 MULESHOE4.0404.7503.0002009.430

43SIZE 96A4-47 MODEL 'SC-1R' HYDRAULIC PACKER WITH 6 5/8" LTC BOX DOWN1.7308.4654.7502005.390

44MODEL 'S' GRAVEL PACK EXTENSION WITH SLIDING SLEEVE 6 5/8" STC PIN x PIN8.3307.0004.7502007.120

45MODEL 'A' INDICATOR SUB SIZE 4.2" WITH 6 5/8" LTC BOX x STC PIN0.4207.3904.2002015.450

46EXTENSION, 6 5/8" STC PIN x PIN2.2906.6255.6752015.870



49CROSSOVER SUB 6 5/8" LTC BOX x 5 1/2" STC PIN0.2207.3904.8902022.090

50SHEAR-OUT SAFETY JOINT WITH 5 1/2" LTC BOX x STC PIN ( 43,000 lbs. Min. shear )0.4806.0604.8902022.310

51BLANK PIPE 5 1/2" LTC BOX x STC PIN24.5906.0504.8922022.790

52CROSSOVER SUB 5 1/2" LTC BOX x 5 1/2" SEAL-LOCK HT PIN0.2206.0504.8922047.380

Mike Kynoch53EXCLUDER SCREEN 5 1/2" SEAL-LOCK HT BOX x PIN ( 230 MICRON )11.3406.5404.8922047.600

54CROSSOVER SUB 5 1/2" STC PIN x 5 1/2" SEAL-LOCK HT BOX0.2206.0504.8922058.940

Mike Kynoch55192-47 MODEL 'SB' SNAP LATCH SEAL ASSEMBLY WITH 3.25" POLISHED BORE0.3806.0003.2502059.160

56192-47 SEAL ASSEMBLY WITH 1/2 MULESHOE0.6904.7303.2502060.230


58MILLOUT EXTENSION 6 5/8" STC PIN x PIN1.0706.6255.6752061.060

59CROSSOVER SUB 6 5/8" LTC BOX x 3 1/2" NK3SB PIN0.2807.3902.9922062.130


612.75" MODEL 'F' TOP NO-GO SEATING NIPPLE WITH 3 1/2" NK3SB BOX x PIN0.3904.3132.7502065.510

62WIRELINE ENTRY GUIDE WITH 3 1/2" NK3SB BOX UP0.1804.2503.0002065.900

63MODEL 'B' WIRELINE ENTRY GUIDE SIZE 8 1/8" X 3 1/2" EUE 8rd PIN DOWN0.2408.1252.9922186.080

643 1/2" EUE 8rd BOX x PIN PUP JOINT1.8603.5002.9922186.320

65190-47 'S-22' SNAP LATCH SEAL ASSEMBLY WITH 3 1/2" EUE 8rd BOX UP0.3306.0003.0002188.180

A190-47 SEAL UNIT0.4004.7503.0002188.510

B190-47 SPACER TUBE2.8904.2502.9922188.910

C190-47 TUBING SEAL NIPPLE WITH 3 1/2" NK3SB BOX x PIN0.7004.7502.9922191.800

D3 1/2" NK3SB BOX x PIN PUP JOINT2.0004.2502.9922192.500

E3 1/2" NK3SB BOX x PIN PERFORATED PUP JOINT3.1204.2502.9922194.500

FCROSSOVER SUB 3 1/2" NK3SB BOX x 2 7/8" NEW VAM PIN0.2404.2502.4412197.620

G2 7/8" NEW VAM BOX x PIN TUBING ( 3 JOINTS )28.8003.2502.4412197.860

HBLAST JOINTS WITH 2 7/8" NEW VAM BOX x PIN ( 2 JOINTS )12.1203.2502.4412226.660

I2.31" MODEL 'F' TOP NO-GO SEATING NIPPLE WITH 2 7/8" NEW VAM BOX x PIN0.3403.1882.3132238.780

J80-32 LOCATOR SUB WITH 2 7/8" NEW VAM BOX UP0.2503.4382.4302239.120

K80-32 SEAL ASSEMBLY WITH 1/2 MULESHOE1.5503.2402.4302239.370


67MODEL 'S' GRAVEL PACK EXTENSION WITH SLIDING SLEEVE 6 5/8" STC PIN x PIN8.3307.0004.7502190.240





72CROSSOVER SUB 6 5/8" LTC BOX x 5 1/2" STC PIN0.2307.3904.8902205.210

73SHEAR-OUT SAFETY JOINT WITH 5 1/2" LTC BOX x STC PIN ( 63,000 lbs. Min. shear )0.4806.0604.8902205.440

74BLANK PIPE 5 1/2" LTC BOX x STC PIN27.6306.0504.8922205.920

75CROSSOVER SUB 5 1/2" LTC BOX x 5 1/2" SEAL-LOCK HT PIN0.2206.0504.8922233.550

76EXCLUDER SCREEN 5 1/2" SEAL-LOCK HT BOX x PIN ( 230 MICRON )5.6606.5404.8922233.770

77CROSSOVER SUB 5 1/2" STC PIN x 5 1/2" SEAL-LOCK HT BOX0.2306.0504.8922239.430

78192-47 MODEL 'SB' SNAP LATCH SEAL ASSEMBLY WITH 3.25" POLISHED BORE0.3806.0003.2502239.660

79192-47 SEAL ASSEMBLY WITH 1/2 MULESHOE0.6904.7303.3502240.730

80194-47 MODEL 'DB' PACKER WITH 6 5/8" LTC BOX DOWN0.8808.1254.7502240.040

81MILLOUT EXTENSION 6 5/8" STC PIN x PIN1.8206.6255.6752240.920

82CROSSOVER SUB 6 5/8" LTC BOX x 2 7/8" NEW VAM PIN0.4507.3902.4412242.740

83PUP JOINT WITH FLOW COUPLINGS AND 2.31" 'F' NIPPLE 2 7/8" NEW VAM9.1402.8752.3132243.190

0.000

2

4

3

5

6

7

8

9

10

Perfs.@ 2747.6mto2751.6mOHRKB

2

4

3

5

6

7

8

9

10


4

3

5

6

7

8

9

10

11

12

13

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16

1

2

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

41

44

K

40

42

39

38

37

36

K-082371m.to2375m.meters

J-222049m.to2056.5m.meters

J-50 2234m.to2237m.meters

43

44

52

51

50

49

48

47

46

45

8453

5953

5853

5753

5653

5553

5453

5353

6553

6453

6353

6253

6153

6053

6553

6453

6353

7253

7153

7053

6953

6853

6753

6653

7953

7853

7753

7653

7553

7453

7353

8353

8253

8153

8053

J

i

H

G

F

E

D

C

B

A

42a

2

4

3

5

6

7

8

9

10


2

4

3

5

6

7

8

9

10


4

3

5

6

7

8

9

10

11

12

13

14

15

16

Horizontal Tree

1

2

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

41

44

40

42

39

38

37

36




43

44

52

51

50

49

48

47

46

45

8453

5953

5853

5753

5653

5553

5453

5353

6553

6453

6353

6253

6153

6053

7253

7153

7053

6953

6853

6753

6653

7953

7853

7753

7653

7553

7453

7353

8353

8253

8153

8053

2

4

3

5

6

7

8

9

10


2

4

3

5

6

7

8

9

10


4

3

5

6

7

8

9

10

11

12

13

14

15

16

1

2

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

41

44

40

42

39

38

37

36




43

44

52

51

50

49

48

47

46

45

8453

5953

5853

5753

5653

5553

5453

5353

6553

6453

6353

6253

6153

6053

7253

7153

7053

6953

6853

6753

6653

7953

7853

7753

7653

7553

7453

7353

8353

8253

8153

8053

42a

84

WIRELINE ENTRY GUIDE WITH 2 7/8" NEW VAM BOX UP

.30

3.019

2.4411

2252.33

80

81

82

83

2252.63

XXXX

XXXX

XXXX

MBD00003592.doc

MBD00009250.doc

Thank You For ListeningCanada(PCP/GL/BP/ESP)USA(PCP/GL/BP/ESP/JP)Venezuela(BP/ESP/PCP)Colombia(PCP)North Sea(ESP/GL)Kuwait(PCP)Angola(GL/PCP/CTESP)Nigeria(ESP/GL)China(ESP/GL)Indonesia(ESP/BP/PCP/GL)Australia(GL/BP)Argentina(BP/ESP/ GL)Thailand(GL)Chevrons World of Artificial Lift

Good Morning. It's nice to be back home.Chevron is not a huge heavy oil producer but we do have areas that we have operated in for quite some time. The three main areas are Venezuela, Indonesia and California. We do have some heavy stuff in the Brooks area but I thought you have seen past presentations on that so I threw in Hebron for a quick discussion.

In order to squeeze this presentation into 30 minutes, I will focus on operating practices and downhole equipment that is working well for us. I could talk for days on all the things we tried that did not work. If you want to know more details than what is presented here, catch me sometime during the next few days and I will be glad to discuss them with you.

That ends my presentation. Once again, I would like to thank the organizers for letting me present today. Now, iIf there is some equipment or method that you did not see here, chances are it did not work for us or we were unable to get it into country. For those vendors in the audience who have a product that you know is applicable and we have not tried it, catch me during the next few days to talk. Now, does anyone have any questions on what was just presented?

Documents

Gas Lift Design Philosophy for Chevron’s Subsea Developments