Increasing use of advanced (intelligent) completions has provided the facility for real time reservoir monitoring through use of permanent downhole instrumentation and control of production from different zones within the reservoir through use of surface operated inflow control devices. The potential for the real-time data generated by advanced completion solutions is now being exploited to a greater extent.

The paper will demonstrate that trending analysis of the pressure drop (dP trending) using the data delivered by sensors located strategically in a multi-zone horizontal or multilateral intelligent completion can identify the time and location of water influx into a well. It will be shown that "pressure drop trend signatures" can identify the location of the water influx and application of this approach will be illustrated by use of two, three and four zone completions in synthetic reservoirs. A more complex, field based example will also be employed to illustrate the robustness of the technique. Prompt recognition of the influx of unwanted fluid and its location can be achieved using the technique described in this paper.

Keywords:
production monitoring, Upstream Oil & Gas, multilateral completion, water influx, reduction, water production, production control, production logging, flow rate, Exhibition
Subjects:
Drilling Operations, Well & Reservoir Surveillance and Monitoring, Reservoir Fluid Dynamics, Formation Evaluation & Management, Information Management and Systems, Directional drilling, Production logging, Flow in porous media, Well performance, inflow performance, Completion Monitoring Systems/Intelligent Wells
Copyright 2007, Society of Petroleum Engineers
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