Cold Lake: 3D Seismic Monitoring for Enhancing Thermal Recovery—Imperial Oil/Exxon
Published:January 01, 1997
A technique is illustrated which uses a single 3D seismic monitor survey along with multiple seismic attributes in conjuncture with an offset baseline survey to discriminate heated reservoir from unhealed reservoir. 3D seismic monitoring has definitively mapped steam heated regions of the reservoir at two separate geographic locations encompassing more than 150 wells in Cold Lake. Based on these maps infill wells have been drilled into those regions of the reservoir which have remained unhealed after ten years of steam injection.
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Time-Lapse Seismic in Reservoir Management
“This book, prepared for use with the first SEG / EAGE Distinguished Instructor Short Course, discusses Â"time-lapse seismicÂ" and enables geoscientists to assess the value and risk of this new technology. It covers the rationale and driving forces behind time-lapse seismic by examining the limitations of existing methods of tracking fluid flow between wells. It examines those reservoir properties that change with time and what can be observed on seismic data over elapsed time. The repeatability of seismic data and the use of Â"legacyÂ" data sets are discussed, along with a review of the seismic data acquisition schemes and data processing requirements for time-lapse analysis. The rock-physics foundation for data analysis and interpretation options also are described. A selection of industry case histories illustrates many of these points. The reader will gain an understanding of key success factors, key calibration requirements, and key uncertainties of time-lapse seismic in reservoir management.”