发明名称 |
Measuring device for a seismic profile within a well-bore |
摘要 |
A measuring device for a seismic profile within a well-bore includes resilient members such as springs which are flexible in at least two directions and are interposed between a geophone and a rigid arm connected to a measuring-tool body for applying the geophone against the wall of the well-bore during each detection of seismic waves generated at the ground surface. The elasticity of the resilient members is at least equal to the elasticity of the subsurface stratum through which the well-bore extends. The resonance frequency of the mass of the geophone with the resilient members is equal at a maximum to the resonance frequency defined by the geophone mass and elasticity of the subsurface stratum.
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申请公布号 |
US4811814(A) |
申请公布日期 |
1989.03.14 |
申请号 |
US19870009586 |
申请日期 |
1987.01.29 |
申请人 |
SOCIETE NATIONALE ELF AQUITAINE |
发明人 |
STARON, PHILIPPE;GROS, PIERRE |
分类号 |
E21B23/01;E21B47/01;G01V1/16;G01V11/00;(IPC1-7):G01V1/00;G01V1/40 |
主分类号 |
E21B23/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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