Brunei Shell Petroleum Champion Field Gas-lift Optimization Project - FieldWare Production Universe Implementation in a Brown Field
- Thierry Wee (Brunei Shell Petroleum Company Sdn. Bhd) | Agostino Turco (Brunei Shell Petroleum Company Sdn. Bhd) | Roger McIlroy (Brunei Shell Petroleum Company Sdn. Bhd) | Frank de Boer (Shell Global Solutions International) | Ronald Cramer (Shell Global Solutions International) | Michael J. Dolan (Shell Global Solutions International)
- Document ID
- Society of Petroleum Engineers
- SPE Gulf Coast Section 2008 Digital Energy Conference and Exhibition, 20-21 May, Houston, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2008. Society of Petroleum Engineers
- 5.1.5 Geologic Modeling, 4.2 Pipelines, Flowlines and Risers, 1.6 Drilling Operations, 4.1.2 Separation and Treating, 4.1.6 Compressors, Engines and Turbines, 5.4.3 Gas Cycling, 4.6 Natural Gas, 3.1.6 Gas Lift, 5.5.8 History Matching, 4.5 Offshore Facilities and Subsea Systems, 2.3.4 Real-time Optimization, 5.2.1 Phase Behavior and PVT Measurements, 5.6.11 Reservoir monitoring with permanent sensors, 4.1.4 Gas Processing, 6.2.8 Ergonomics, 7.3.3 Project Management, 4.2.5 Offshore Pipelines, 2.3 Completion Monitoring Systems/Intelligent Wells, 5.4.2 Gas Injection Methods, 5.6.4 Drillstem/Well Testing, 4.1.5 Processing Equipment, 2.4.3 Sand/Solids Control
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Brunei Shell Petroleum (BSP) is undergoing a significant modernization of its gas-lift system in the Champion field in Brunei. With smart gas-lift flow control valves, BSP is continuously controlling the gas for gas lifted wells on remote, unmanned production facilities. Shell Global Solutions is assisting this process by the implementation of the FieldWare* Real-time Optimization (RTO) system. This system, which uses data driven models to optimize production, has already proven its value in this field during a prior pilot installation. The successful implementation of BSP Champion field gas-lift optimization is an example of the significant value that Smart Fields* implementation brings to a brown field. As a result Gas-lift efficiency has been sustainably increased by 40% in one of the implemented platforms. This paper discusses the RTO project execution, technology involved, the implementation process, its results and finally the business benefits achieved.
BSP operates the highly complex Champion field offshore Brunei - reservoirs with stacked sand/shale sequences and wells with commingled zones production. The field has been producing since the early 1970's, with 500 reservoirs, 300 well strings, 30 platforms/jackets, 5 production separation platform complexes and 185 offshore pipelines. Reservoir pressure decline means that 80% of the producers are gas-lifted. Six compressors supply lift-gas to 260 gas-lifted wells (located across 29 platforms) via the gas-lift supply pipelines network.
Historically, the gas-lift flow to each well has been controlled predominantly by the size of the orifice in the downhole operating valve. As the well conditions evolved, inappropriate orifice sizes occasionally caused lifting instability. Orifice enlargement or leaking was not picked-up as there was no real-time measurement of these rates and no ability for active gas lift gas injection control and allocation. Well and field-wide gas-lift optimization was therefore not possible. Associated gas GORs were often considered unreliable and of little value for reservoir modelling, resulting in the loss of a significant history matching variable.
* Trade marks owned and used by companies of the Shell group
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