Reservoir evaluation apparatus and method
AssigneeInput/Output, Inc.
InventorsGeoffrey Nightingale, Peter Maxwell, Roy Devereux
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Abstract
The present invention provides a vertical seismic imaging apparatus and method for evaluation a reservoir. The invention includes a plurality of sensors disposed in a well borehole either permanently cemented in place or retrievably disposed using a series of clamps to attach the sensors to the borehole wall. Each sensor uses one or more forced balanced controlled accelerometers to detect acoustic energy in the formation.
Claims56
A seismic data acquisition apparatus for sensing acoustic energy in a formation, comprising:
- a) a plurality of sensors disposed in a well borehole drilled in the formation for detecting the acoustic energy, each sensor including at least one forced balanced feedback controlled accelerometer for providing a sensor output indicative of the acoustic energy at the sensor location.
A formation vertical seismic profiling system, comprising:
- a) a plurality of sensors disposed in a well borehole drilled in the formation for detecting acoustic energy, each sensor including at least one forced balanced feedback controlled accelerometer for providing a sensor output indicative of the acoustic energy at the sensor location;
- and
- b) a first controller coupled to the plurality of sensors for determining the parameter of interest using the sensor output of one or more of the plurality of sensors.
A method of sensing acoustic energy in a formation, comprising:
- a) disposing a plurality of sensors in a well borehole drilled into the formation each sensor including at least one force balanced feedback controlled accelerometer;
- and
- b) sensing the acoustic energy within the formation using the plurality of sensors.;
- and
- d) determining a parameter of interest using a controller coupled to the plurality of sensors, the parameter of interest being determined at least in part on the sensed acoustic energy.
Dependencies are inferred from the claim text.