2/11/2007 7:54 PM

2005 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary. 1

Gas Lift SystemGas Lift SystemOperation, Challenges and VisionOperation, Challenges and Vision

Mohammad A. FarooquiMohammad A. FarooquiQatar PetroleumQatar Petroleum

2007 ASME/API/ISO Gas Lift Workshop2007 ASME/API/ISO Gas Lift Workshop06 February 200706 February 2007

Marriott Hotel, Doha, QatarMarriott Hotel, Doha, Qatar

Presentation OutlinePresentation Outline

Introduction to QPIntroduction to QP’’s gas lift systemss gas lift systemsCurrent operation & practicesCurrent operation & practicesChallengesChallengesSummarySummary

Gas Lift SystemsGas Lift Systems

Type bulleted item hereType bulleted item hereType indented bullets hereType indented bullets here

Type Indented bullets hereType Indented bullets hereType Indented bullets hereType Indented bullets hereType Indented bullets hereType Indented bullets here

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Dukhan

Maydan Ma

Bul Hanine

QP-Operated Oil Fields

N

S

Al-KarkaraA-Structure El-Bunduq

Al-Khalij

Al-Shaheen

Al-Rayyan

Idd El Shargi

EPSA/DPSA Oil EPSA/DPSA Oil F

North Field

North Field (Gas)

Lift Gas Dehydration

1st Stage Separation at 170 psig

Other Stages of Separation at 40/10/0 psig

RAG Dehydration

RAG RAG

RAG toFSP

Oil to Mesaieed

Arab-CArab-DUwainat

Lift Gas

Dukhan Gas Lift SystemDukhan Gas Lift SystemDukhan Gas Lift System

Gas LiftCompressor

BoosterCompressor

Gas Gath.Compressor

Dukhan GL Remote ManifoldDukhan GL Remote Manifold

2/11/2007 7:54 PM

2005 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary. 2

Dukhan Gas Lift SummaryDukhan Gas Lift Summary

Gas compression capacity: 250 MMSCFDGas compression capacity: 250 MMSCFDInjection gas pressure: 1700 psiInjection gas pressure: 1700 psiNo. of wells on gas lift: 20% of the active wellsNo. of wells on gas lift: 20% of the active wellsProduction gain: 7Production gain: 7--8% of the total production8% of the total productionAverage gas injection rate: 0.5Average gas injection rate: 0.5--1 MMSCFD/well1 MMSCFD/well

Offshore Gas Lift SystemsOffshore Gas Lift SystemsOffshore Gas Lift Systems

ArabArab--C/D Associated GasC/D Associated Gas++

Lift GasLift Gas

MidMid--Jurassic (HP) Associated GasJurassic (HP) Associated Gas(1400 psi)(1400 psi)

Fuel GasFuel Gas

Gas LiftGas LiftDehydration Dehydration Units (2)Units (2)

ExportExport

(1400 psi)(1400 psi)CompressorCompressor(100 psi)(100 psi)

Offshore Gas Lift SummaryOffshore Gas Lift Summary

2.62.62.72.7Average Gas Average Gas Injection/wellInjection/well

75756666Production Gain (% of Production Gain (% of total field production)total field production)

21213636No. of Wells on GLNo. of Wells on GL

1400 psi1400 psi1400 psi1400 psiInjection Gas PressureInjection Gas Pressure

Maydan MahzamMaydan MahzamBul HanineBul Hanine

Overall ~25% of QP Production is from gas lifted wellsOverall ~25% of QP Production is from gas lifted wells

Current Operation & PracticesCurrent Operation & Practices

Current Operation & PracticesCurrent Operation & Practices

Development of network modelsDevelopment of network modelsRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysImproving well test data reliabilityImproving well test data reliabilityGas lift streamlining StudyGas lift streamlining StudyEvaluation of new technologies for monitoring Evaluation of new technologies for monitoring well performancewell performance

Current Operation & PracticesCurrent Operation & Practices

Development of network modelsDevelopment of network modelsRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysImproving well test data reliabilityImproving well test data reliabilityImproving well test data reliabilityGas lift streamlining studyGas lift streamlining studyGas lift streamlining studyEvaluation of new technologies for monitoring Evaluation of new technologies for monitoring Evaluation of new technologies for monitoring well performancewell performancewell performance

2/11/2007 7:54 PM

2005 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary. 3

Network Model: Network Model:

Objective was to develop comprehensive network models Objective was to develop comprehensive network models incorporating the reservoir, wellbore and surface facility incorporating the reservoir, wellbore and surface facility conditions to facilitate gas lift design and optimization.conditions to facilitate gas lift design and optimization.

Key Success FactorsKey Success Factors

Team work and close coordinationTeam work and close coordinationCareful review of required data for availability Careful review of required data for availability and accuracyand accuracyTraining of personnel in the development and Training of personnel in the development and use of modelsuse of models

Some Immediate ApplicationsSome Immediate Applications

Validating gas lift optimization field testsValidating gas lift optimization field testsReRe--design and resizing of gas lift completionsdesign and resizing of gas lift completionsUse of the model for estimating future gas lift Use of the model for estimating future gas lift volume requirementsvolume requirementsEvaluating possible scale buildEvaluating possible scale build--up in the flowlinesup in the flowlines

Network Models: The Way ForwardNetwork Models: The Way Forward

Fully integrated real time production Fully integrated real time production management system consisting of:management system consisting of:

Real time field data gatheringReal time field data gatheringProduction allocation databaseProduction allocation databaseNetwork modelsNetwork modelsAutomated process controlAutomated process control

Real time optimization of the entire system to:Real time optimization of the entire system to:Maximize productionMaximize productionUtilize available lift gas effectivelyUtilize available lift gas effectivelyValidate well rate dataValidate well rate data

Current Operation & PracticesCurrent Operation & Practices

Development of network modelsDevelopment of network modelsDevelopment of network modelsRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysImproving well test data reliabilityImproving well test data reliabilityImproving well test data reliabilityEvaluation of new technologies for monitoring Evaluation of new technologies for monitoring Evaluation of new technologies for monitoring well performancewell performancewell performance

Using Fluid Gradient SurveysUsing Fluid Gradient Surveys

Leaking Unloading ValveLeaking Unloading Valve

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2005 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary. 4

Current Operation & PracticesCurrent Operation & Practices

Development of network modelsDevelopment of network modelsDevelopment of network modelsRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysImproving well test data reliabilityImproving well test data reliabilityEvaluation of new technologies for monitoring Evaluation of new technologies for monitoring Evaluation of new technologies for monitoring well performancewell performancewell performance

Well Rate Test Data AcquisitionWell Rate Test Data Acquisition

Offshore:Offshore:MultiMulti--phase flowmeter installed on 18 multiphase flowmeter installed on 18 multi--well well jacketsjacketsConcerted effort to improve station test separator Concerted effort to improve station test separator reliabilityreliabilityReplacement of old orifice plates in gas lift linesReplacement of old orifice plates in gas lift lines

Dukhan:Dukhan:New threeNew three--phase test separators at each stationphase test separators at each stationUse of mobile multiUse of mobile multi--phase flowmeter skidphase flowmeter skidInstallation of multiInstallation of multi--phase flowmeter at one remote phase flowmeter at one remote satellite stationsatellite station

Current Operation & PracticesCurrent Operation & Practices

Development of network modelsDevelopment of network modelsDevelopment of network modelsRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysImproving well test data reliabilityImproving well test data reliabilityImproving well test data reliabilityGas Lift Streamlining StudyEvaluation of new technologies for monitoring Evaluation of new technologies for monitoring Evaluation of new technologies for monitoring well performancewell performancewell performance

Gas Lift Streamlining StudyGas Lift Streamlining StudyConducted together with two recognized gas lift expertsConducted together with two recognized gas lift expertsCovered both engineering and operations aspectsCovered both engineering and operations aspects

Well testing and measurementsWell testing and measurementsFlowing gradient survey proceduresFlowing gradient survey proceduresFull field network modelsFull field network modelsOrganization and work flowOrganization and work flowKPIsKPIsDesign processDesign processTraining needsTraining needsGas compression system performanceGas compression system performanceSurging wellsSurging wellsWireline shops (Valve charging, testing, inventory, etc.)Wireline shops (Valve charging, testing, inventory, etc.)

Resulted in 16 specific recommendations, Resulted in 16 specific recommendations, prioritized by difficulty and costprioritized by difficulty and cost

Surging Wells Surging Wells Surge Factors:Surge Factors:

Large tubing sizeLarge tubing sizeLarge GLV port sizeLarge GLV port sizeWellhead restrictionsWellhead restrictionsInsufficient gas supplyInsufficient gas supplyHydratesHydrates

Prevention:Prevention:Operating proceduresOperating proceduresResize tubingResize tubingResize GLVsResize GLVsRemove wellhead Remove wellhead restrictionsrestrictionsAdd tubing pressure Add tubing pressure sensor on the telemetrysensor on the telemetry

F/L Temp.

QG

PG

Current Operation & PracticesCurrent Operation & Practices

Development of network modelsDevelopment of network modelsDevelopment of network modelsRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysRoutine use of flowing gradient surveysImproving well test data reliabilityImproving well test data reliabilityImproving well test data reliabilityGas Lift Streamlining StudyGas Lift Streamlining StudyGas Lift Streamlining StudyEvaluation of new technologies for monitoring well performance

2/11/2007 7:54 PM

2005 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary. 5

FiberFiber--Optic SlicklineOptic Slickline

The entire wellbore profile The entire wellbore profile obtained simultaneouslyobtained simultaneouslyTemperature anomalies Temperature anomalies against unloading valves against unloading valves shows leaking valvesshows leaking valvesPrompt corrective action Prompt corrective action possiblepossible

Acoustic Downhole MonitoringAcoustic Downhole Monitoring

CommunicationsUnit

SolarPanels

Batteries

AcousticTransceiverson Wellhead

Acoustic Downhole MonitoringAcoustic Downhole Monitoring

Gauges and acoustic relay stations at 1000, 2000, 3000, 4000, Gauges and acoustic relay stations at 1000, 2000, 3000, 4000, 5000 ft.5000 ft.Data transmitted from relay stations to the wellheadData transmitted from relay stations to the wellheadData transmitted from wellhead to engineerData transmitted from wellhead to engineer’’s desk via satellites desk via satelliteWell performance monitored real timeWell performance monitored real time

ChallengesChallenges

Compressor capacity limitationsCompressor capacity limitations

Well integrity issuesWell integrity issues

Scale depositsScale deposits

Limited Compressor CapacityLimited Compressor CapacityLimited Compressor Capacity

Associated Gas=20 + Lift Gas=55Associated Gas=20 + Lift Gas=55Gas Lift = 55 MMSCFDGas Lift = 55 MMSCFD

Export = 0 MMSCFDExport = 0 MMSCFDCompressorCompressor

55 MMSCFD55 MMSCFD

Flare = 20 MMSCFDFlare = 20 MMSCFD

Optimize GL utilization while minimizing oil production loss thrOptimize GL utilization while minimizing oil production loss through:ough:Ranking of wells by TGI/bbl of total fluid producedRanking of wells by TGI/bbl of total fluid producedNetwork modeling predictionsNetwork modeling predictionsGL completions reGL completions re--designdesignImproved operating practicesImproved operating practices

Associated Gas=20 + Lift Gas=55Associated Gas=20 + Lift Gas=55Gas Lift = 35 MMSCFDGas Lift = 35 MMSCFD

Export = 20 MMSCFDExport = 20 MMSCFDCompressorCompressor

55 MMSCFD55 MMSCFD

Flare = 0 MMSCFDFlare = 0 MMSCFD

Well Integrity IssuesWell Integrity IssuesWell Integrity Issues

Exposing production in old wells to high gas Exposing production in old wells to high gas injection pressures presents a potential well injection pressures presents a potential well integrity riskintegrity riskGas lift discontinued in highest risk wellsGas lift discontinued in highest risk wellsA comprehensive well integrity monitoring and A comprehensive well integrity monitoring and management system being put in placemanagement system being put in place

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2005 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary. 6

Offshore ScaleOffshore ScaleOffshore Scale

CaCOCaCO33 deposits in tubing cause problems in GLV deposits in tubing cause problems in GLV retrievalretrievalShort Term Solution:Short Term Solution:

Scale removed by pumping dilute HClScale removed by pumping dilute HClRevised frequency of GLV replacementRevised frequency of GLV replacement

Long Term Strategy:Long Term Strategy:A comprehensive scale removal and prevention programA comprehensive scale removal and prevention program

SummarySummarySummary

Approximately 25% of QPApproximately 25% of QP--operated oil operated oil production comes from gas lifted wellsproduction comes from gas lifted wellsQP has adopted and developed a number of best QP has adopted and developed a number of best practices to facilitate the monitoring, operation practices to facilitate the monitoring, operation and optimization of the systemand optimization of the systemQP is also evaluating new technologies to further QP is also evaluating new technologies to further enhance its monitoring and optimization enhance its monitoring and optimization capabilitiescapabilities

Thank you!Thank you!