| 摘要 |
The detailed analysis of cross well seismic data for a gas reservoir in Texas revealed two newly detected seismic wave effects, recorded approximately 2000 feet above the reservoir. A tube-wave ( 150 ) is initiated in a source well ( 110 ) by a source ( 111 ), travels in the source well ( 110 ), is coupled to a geological feature ( 140 ), propagates ( 151 ) through the geological feature ( 140 ), is coupled back to a tube-wave ( 152 ) at a receiver well ( 120 ), and is and received by receiver(s) ( 121 ) in either the same ( 110 ) or a different receiving well ( 120 ). The tube-wave has been shown to be extremely sensitive to changes in reservoir characteristics. Tube-waves appear to couple most effectively to reservoirs where the well casing is perforated, allowing direct fluid contact from the interior of a well case to the reservoir.
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