Reservoir Management Employing Smart Wells: A Review
- Carlos A. Glandt (Shell Intl. E&P BV)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- December 2005
- Document Type
- Journal Paper
- 281 - 288
- 2005. Society of Petroleum Engineers
- 5.6.4 Drillstem/Well Testing, 2 Well Completion, 1.2.3 Rock properties, 1.8 Formation Damage, 2.4.3 Sand/Solids Control, 3.3 Well & Reservoir Surveillance and Monitoring, 2.2.2 Perforating, 5.4.2 Gas Injection Methods, 5.6.9 Production Forecasting, 4.1.5 Processing Equipment, 5.5.8 History Matching, 5.1 Reservoir Characterisation, 5.5 Reservoir Simulation, 5.4.1 Waterflooding, 4.6 Natural Gas, 1.6 Drilling Operations, 2.3 Completion Monitoring Systems/Intelligent Wells, 5.6.11 Reservoir monitoring with permanent sensors, 3.2.2 Downhole intervention and remediation (including wireline and coiled tubing), 5.8.7 Carbonate Reservoir, 3.3.1 Production Logging, 2.4.5 Gravel pack design & evaluation, 4.1.2 Separation and Treating, 5.1.9 Four-Dimensional and Four-Component Seismic, 3.1.6 Gas Lift, 3 Production and Well Operations
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A well equipped with intelligent components is considered "smart" only whenit maximizes its value over the life of the project.The definition of theadequate level of intelligence is the outcome of a multidisciplinary discussionthat focuses on the well and reservoir management.To effectively realizethe value associated with these technologies, Shell set up a GlobalImplementation Smart Wells Team at its E&P Technical Center. Jointly withasset teams from around the world, it has reviewed more than 80 projects overthe last 3 years. The main result of this work is a faster and more-meaningfulimplementation effectively realizing the value associated with thesetechnologies. An important byproduct of this work is a list of identified welland reservoir opportunities in which smart completions can add significantvalue.This paper reviews these opportunities and provides selectedexamples.
Smart wells include a battery of completion equipment designed to do thefollowing:
• Monitor well operating conditions downhole (e.g., flow, pressure,temperature, phase composition, and water pH).
• Image the distribution of reservoir attributes away from the well (e.g.,resistivity and acoustic impedance).
• Control the inflow and outflow rates of segregated segments of thewell.
Combined with quality readings at surface of total rates and other nonwellmapping technologies, such as time-lapse seismic, smart wells also provide thetools to manage wells, identify undrained oil, and make informed decisions thatoptimize hydrocarbon recovery.1
The perceived added value associated with these technologies, theircomplexity, and the need to satisfy reliability demands have driven servicecompanies and field operators to devote staff and resources to develop new andimproved products and to explore opportunities to deploy these well-completioncomponents worldwide.
Numerous papers and technical literature dealing with field applications andcompletion specifications can be found elsewhere.2-10 This paper focusesinstead on the reservoir opportunities in which the added value can be readilyidentified. As our industry struggles to improve ultimate recovery and to makemarginal projects feasible, wells must provide cost-effective means to gatherreservoir information and produce them efficiently. Intelligent completionswill become a standard practice in years to come. Currently, that vision isslowly being realized, one well at a time.
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