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Real-Time Gas Lift Optimization 2001 ASME/API Gas Lift Workshop - Aberdeen Tommy White Artificial Lift Business Development Mgr.

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Presentation on theme: "Real-Time Gas Lift Optimization 2001 ASME/API Gas Lift Workshop - Aberdeen Tommy White Artificial Lift Business Development Mgr."— Presentation transcript:

1 Real-Time Gas Lift Optimization 2001 ASME/API Gas Lift Workshop - Aberdeen Tommy White Artificial Lift Business Development Mgr.

2 2TMW Content Gas Lift Optimization – Focused on Service Delivery Field trial of a new method – real time optimization The added value New solutions Conclusions

3 Virtuous Circle Artificial lift engineering Data acquisition and comparison Artificial lift products and services Data acquisition

4 4TMW Gas Lift Service A service that optimizes gas lifted wells using multiphase flow-metering technology This service encompasses – artificial lift engineering expertise – multiphase well testing equipment and expertise – (real time production measurement) – implementation products and services – artificial lift products and services.

5 5TMW Multiphase Metering Benefits leading to Production Optimization – –Real time data Extensive data base in short period of time Quick turn around time for decision making – –Resolution Accuracy – –Dynamic response Accurate data and independent of flow regime

6 6TMW Gas Lift Service Field Trial Well application in Venezuela

7 7TMW Gas Lift Service Slickline unit performing flowing gradient survey

8 8TMW Gas Lift Service Portable three-phase tester tied to a gas lift well production line

9 9TMW Gas Lift Service Control bay interprets real time data

10 10TMW Gas and total fluid result Gas Lift Analysis Inside control bay during multi-rate test on gas lift well 03691215 Time (hr) Oil and water rate (BOPD) 800 700 600 500 400 300 200 100 Total fluid Total gas

11 11TMW Inside control bay during multi-rate test on gas lift well Oil and water result Gas Lift Analysis Total oil Total water 03691215 Time (hr) Oil and water rate (BOPD) 800 700 600 500 400 300 200 100

12 12TMW Gas Lift Analysis Flowing gradient survey provides real valve injection points Stable flow measured by PhaseTester Flowing gradient survey result 5075100125150175200225250 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 TVD (ft) Temperature (º F)

13 13TMW Lift gas performance curves Gas Lift Diagnosis Inside artificial lift engineering office during diagnosis Operating rate (STB/D) Lift gas injection rate (MMscf/D) 0.30.3750.450.5250.6

14 14TMW Existing gas injection location Gas Lift Diagnosis Inside artificial lift engineering office during diagnosis 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 5075100125150175200225250 Temperature (º F) TVD (ft)

15 15TMW Gas Lift Diagnosis Inside artificial lift engineering office during diagnosis NODAL* production system model match to real well data 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 Temperature (º F) 5075100125150175200225250 TVD (ft)

16 16TMW Gas Lift Diagnosis Artificial lift equipment selection Venturi gas lift orifice valve minimizes injected gas increases well stability by injecting subcritical gas into tubing optimizes use of limited gas supplies maintains the deepest point of injection.

17 17TMW Gas Lift Diagnosis Inside artificial lift engineering office during diagnosis Modeled location of Venturi gas lift valve 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 5075100125150175200225250 Temperature (º F) TVD (ft)

18 18TMW Gas Lift Implementation Slickline installation of the Venturi gas lift valve in the deepest mandrel

19 19TMW Gas Lift Validation Inside artificial lift engineering office during validation Gradient survey validates predictions 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 5075100125150175200225250 Temperature (º F) TVD (ft)

20 20TMW Gas Lift Validation Real-time data acquisition validates production increase and stability Inside artificial lift engineering office during validation 800 Time (hr) 01230123 700 600 500 400 300 200 100 0 Oil and water rate (BOPD )Before Injected Gas Rate 0.715 MMSCF/d After Injected Gas Rate 0.675 MMSCF/d

21 21TMW Added Value Field example of Artificial Lift operation Maximizing productivity through: – technology – people – process. Actual gas lift well application results: – – 16% increase in production – – 6% decrease in injected gas – – cost of operation recovered in 20 days

22 22TMW Gas Lift System Optimization SEPERATOR Well Focus Gas Injection Well Focus GL Design Gas Lift Design Performanc e SEPERATOR Well Focus 3-Phase Flow 3-Phase Measurement And Stability Monitor Well Focus

23 23TMW Real Time Optimization Benefits Real gains can be seen very quickly through –placing a focus on lift optimization –use of real time data acquisition which minimizes the cycle time for optimum data analysis and solution applications –application of accepted technology Extending product knowledge to add value –identify the right path to take the solution further –implementing a path of long term lift optimization

24 24TMW The Future of Gas Lift

25 25TMW Decision Making Software Tools Instructions Actuate and Control The Optimization Process Data Manipulation and Storage Office Monitoring Field SCADA TransmissionInterACT

26 Automated AL - The Future


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