Patent ID: 7797996
Filing Date: 2010-09-21
Classification: E21B,G01H,G01V

Abstract:
1. A method for seismically surveying a formation around a wellbore, comprising: lowering a plurality of optically based seismic sensors disposed within clamping mechanisms into the wellbore, at least three of the sensors arranged to sense in axes orthogonally positioned to each other; coupling the sensors to the formation, wherein coupling the sensors to the formation comprises activating the clamping mechanisms to deploy at least a portion of the clamping mechanisms against a casing disposed in the wellbore; detecting one or more seismic events at each of the sensors, wherein detecting one or more seismic events at each of the sensors comprises mapping a fluid contact in a reservoir in the formation using four-dimension vertical seismic profiling; and monitoring micro-seismic events with one or more of the sensors.