MALAYSIA 2003 ASMEAPI GASLIFT WORKSHOP Kuala Lumpur Malaysia

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MALAYSIA 2003 ASME/API GAS-LIFT WORKSHOP Kuala Lumpur, Malaysia Gas Lift Optimization Process By Zaidah

MALAYSIA 2003 ASME/API GAS-LIFT WORKSHOP Kuala Lumpur, Malaysia Gas Lift Optimization Process By Zaidah Ibrahim Operations Manager Exxon. Mobil Exploration and Production Malaysia Inc. 1

Major Effort Required to Meet Global Energy Demand Million Barrels Per Day Oil Equivalent

Major Effort Required to Meet Global Energy Demand Million Barrels Per Day Oil Equivalent ( MBOE ) 160 Oil and Gas Demand 120 New Production 80 Existing Production 40 0 1980 1990 2000 • Half of required 2010 supply not yet on-stream - estimated industry investment exceeds $1 trillion • Continued focus to enhance production from existing facilities is just as important 2010 2

Focus on Gas Lift • Gas Lift has been and will continue to be

Focus on Gas Lift • Gas Lift has been and will continue to be a large part of our business • The majority of our artificially lifted production is gas lifted • Current production requires routine surveillance and analysis to hold the gains made from optimization • Future projects require gas lift as a means of artificial lift. Processes must be transferred to new Production Teams • Industry demographics and turnover require ongoing gas lift training to sustain awareness and competency • New gas lift technologies must be sought and leveraged where appropriate 3

Exxon. Mobil Gas Lift Production 2002 EM Gross Operated Oil Production Gas Lift 27%

Exxon. Mobil Gas Lift Production 2002 EM Gross Operated Oil Production Gas Lift 27% Rod Pump 11% Other 21% Naturally Flowing 52% Progressive Cavity Pump 6% Other 2% Electric Submersible Pump 2% 27% of EM gross operated oil production is gas lifted 4

Optimization is a Continuous Process GL Gas Quality Analysis / Redesign Metering system GLV

Optimization is a Continuous Process GL Gas Quality Analysis / Redesign Metering system GLV Design and Installation OPTIMUM GAS LIFT PRODUCTION Optimization Surface/ Subsurface Equipment Production Monitoring Surveillance Troubleshooting Competent Operators 5

Gas Lift Best Practices • Optimization efforts typically result in 5% or more increases

Gas Lift Best Practices • Optimization efforts typically result in 5% or more increases in field production. • Typically, the gains went away after a period of time. There is a need for sustained focus on gas lift surveillance and optimization to hold the gains • EM developed Gas Lift Best Practices from worldwide experiences Organizatio n Training Optimization Gas Lift Best Practices Surveillance Design Equipmen t 6

Gas Lift Key Performance Indicators Integrated effort to maximize asset performance. . . Idle

Gas Lift Key Performance Indicators Integrated effort to maximize asset performance. . . Idle Capacity Volumetric Downtime Actual Production • • Backlog of new GLV installations Backlog of GLV change- outs • Compressor availability/ capacity • Water handling capacity • Well downtime • • • Number of Active Completions Gas Lift Oil and Liquid Production Total Gas Liquid Ratio Gas Lift Consumed Well Test compliance 7

Continuous Monitoring ---> Ensure Optimum Production Gas Lift Monitoring / Metering System (GLMS) -

Continuous Monitoring ---> Ensure Optimum Production Gas Lift Monitoring / Metering System (GLMS) - Real time data acquisition for Gas Lift surveillance Constant Gas Lift Gas Constant and high Gas Lift Gas Supply Constant Casing Pressure Low and Constant Tubing Pressure 8

Exxon. Mobil’s Gas Lift Forward Plan • Continue to improve Gas Lift Best Practices

Exxon. Mobil’s Gas Lift Forward Plan • Continue to improve Gas Lift Best Practices - document proven examples that others can leverage from • Network and promote interactions to improve each Production Unit’s gas lift efficiencies • Seek out and transfer new technology, and where applicable, use it to improve gas lift processes and performance 9