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公开(公告)号：EP1585994A1
公开(公告)日：2005-10-19
申请号：EP04703065.5
申请日：2004-01-16
CPC分类号： G01V1/523 , Y10S367/911
摘要： An acoustic isolator for attenuating through-tool acoustic signals comprises a plurality of u-shaped link members (11), where each link member has two sets of ears (17, 18) . A plurality of yoke members (12) are adapted to fit between cooperating sets of ears. A plurality of pins (13) connect the plurality of u-shaped link members (11) to the plurality of yoke members (12) for providing limited flexural compliance. The isolator may be made from metallic and /or composite materials.
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公开(公告)号：EP3060754A1
公开(公告)日：2016-08-31
申请号：EP14856371.1
申请日：2014-10-21
摘要： An embodiment of a method of estimating characteristics of an earth formation includes: disposing an acoustic tool in a borehole in an earth formation, the acoustic tool including an acoustic multipole transmitter and at least one multipole acoustic receiver; transmitting acoustic signals into the borehole, the acoustic signals generating at least one acoustic body wave that radiates away from the borehole into a far-field formation region; measuring reflected signals including body waves reflected from reflective boundaries in the far-field formation region; identifying a reflective boundary in the formation and reflection attributes associated with the reflective boundary; and estimating at least one of a thickness, distance and a lateral extent of a hydrocarbon formation feature based on the reflected signals and the reflection attributes.
摘要翻译： 估计地球特征的方法的实施例包括：将声学工具设置在地层中的钻孔中，所述声学工具包括声学多极发射器和至少一个多极声学接收器; 将声信号传输到所述钻孔中，所述声信号产生从所述钻孔向远场形成区域辐射的至少一个声体波; 测量包括从远场形成区域中的反射边界反射的体波的反射信号; 识别与反射边界相关联的形成和反射属性中的反射边界; 以及基于反射信号和反射属性来估计碳氢化合物形成特征的厚度，距离和横向范围中的至少一个。
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公开(公告)号：EP3014060A1
公开(公告)日：2016-05-04
申请号：EP14818165.4
申请日：2014-06-20
CPC分类号： E21B47/101 , E21B43/26
摘要： A method of estimating fractures in an earth formation includes: disposing an acoustic tool in a cased borehole in an earth formation, the acoustic tool including a multipole acoustic transmitter and an acoustic receiver; transmitting an acoustic signal into the borehole; measuring deep shear wave (DSW) signals generated from shear body waves reflected in the formation in a far-field region of the formation around the borehole; and estimating at least a location and an orientation of a fracture in the formation based on the DSW signals.
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公开(公告)号：EP1585994B1
公开(公告)日：2007-01-03
申请号：EP04703065.5
申请日：2004-01-16
CPC分类号： G01V1/523 , Y10S367/911
摘要： An acoustic isolator for attenuating through-tool acoustic signals comprises a plurality of u-shaped link members (11), where each link member has two sets of ears (17, 18) . A plurality of yoke members (12) are adapted to fit between cooperating sets of ears. A plurality of pins (13) connect the plurality of u-shaped link members (11) to the plurality of yoke members (12) for providing limited flexural compliance. The isolator may be made from metallic and /or composite materials.
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