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Borehole Seismic

Enhancing reservoir characterization through borehole data

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Collecting borehole data for reservoir characterization

Borehole seismic data collected during and after the drilling of exploration and appraisal wells delivers valuable information for reservoir characterization. Combined with surface seismic data, borehole seismic surveys can help calibrate results and improve your predictions, as well as image specific reservoir features around the borehole. Drillpipe-conveyed systems are used to collect information on seismic velocities while drilling and to predict lithological changes ahead of the bit. Wireline-conveyed tools and systems are used to acquire high-resolution seismic images in and beyond the borehole.

Many subsurface imaging problems cannot be solved without a 3D survey, and when a survey also needs to be performed in the borehole, the solution is 3D vertical seismic profile (VSP) technology. Our new distributed acoustic sensing (DAS) system reduces VSP acquisition time from the hours required by conventional seismic operations to just minutes.

Interrogator unit of the hDVS DAS system.
Interrogator unit of the hDVS DAS system.
4D Vertical Seismic Profiling
Geophysicist Katie Mahoney discusses WesternGeco 4D VSP.

Borehole Seismic Offerings

Presurvey Design and Acquisition
Iterative workflow to optimize 3D VSP surveys
Integrate survey design, 3D synthetic data generation, and imaging.
VSP Processing
Accurate monitoring of reservoir changes caused by injection and production
Build better velocity models and reduce expenses with higher-resolution data than surface seismic.
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