发明名称 Method and apparatus for determining propagation velocities of elastic waves in a borehole
摘要 A method of measuring the propagation velocity of one or more of a plurality of different types of elastic waves in a borehole. It employs a source of elastic waves at a given location in a borehole. The elastic waves generated have a given known frequency. There are a plurality of receivers spaced at different distances from the source. The signals developed by the receivers are digitally multiplexed at a high scan rate relative to the generated frequency. Then the multiplexed signals are analyzed to determine the wave lengths of the received signals. From the wave lengths the propagation velocities, v, may be computed by using the fundamental relationship v=f lambda , in which f is the frequency and lambda is the wave length.
申请公布号 US4875197(A) 申请公布日期 1989.10.17
申请号 US19830462169 申请日期 1983.01.31
申请人 TEXACO INC. 发明人 RIETSCH, EIKE
分类号 G01V1/46 主分类号 G01V1/46
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