公开(公告)号：US20120075951A1

公开(公告)日：2012-03-29

申请号：US12893530

申请日：2010-09-29

申请人： Paul Allan JOHNSON ,  James A. TENCATE ,  Pierre-Yves LE BAS ,  Robert A. GUYER ,  Cung Khac VU ,  Christopher H. SKELT

发明人： Paul Allan JOHNSON ,  James A. TENCATE ,  Pierre-Yves LE BAS ,  Robert A. GUYER ,  Cung Khac VU ,  Christopher H. SKELT

IPC分类号： G01V1/48

CPC分类号： G01V1/46

摘要： In some aspects of the disclosure, a method and an apparatus is disclosed for investigating material surrounding the borehole. The method includes generating a first low frequency acoustic wave within the borehole, wherein the first low frequency acoustic wave induces a linear and a nonlinear response in one or more features in the material that are substantially perpendicular to a radius of the borehole; directing a first sequence of high frequency pulses in a direction perpendicularly with respect to the longitudinal axis of the borehole into the material contemporaneously with the first acoustic wave; and receiving one or more second high frequency pulses at one or more receivers positionable in the borehole produced by an interaction between the first sequence of high frequency pulses and the one or more features undergoing linear and nonlinear elastic distortion due to the first low frequency acoustic wave to investigate the material surrounding the borehole

摘要翻译： 在本公开的一些方面，公开了一种用于调查围绕钻孔的材料的方法和装置。 该方法包括在钻孔内生成第一低频声波，其中第一低频声波在材料中基本上垂直于钻孔半径的一个或多个特征中引起线性和非线性响应; 将第一序列的高频脉冲沿相对于钻孔的纵轴垂直的方向引导到与第一声波同时的材料中; 以及在由所述第一高频脉冲序列之间的相互作用产生的一个或多个接收器处接收一个或多个第二高频脉冲，以及由于所述第一低频声波而经历线性和非线性弹性失真的所述一个或多个特征 调查钻孔周围的材料

公开(公告)号：US20120075952A1

公开(公告)日：2012-03-29

申请号：US12893573

申请日：2010-09-29

申请人： Paul Allan JOHNSON ,  James A. TENCATE ,  Pierre-Yves LE BAS ,  Robert A. GUYER ,  Cung Khac VU ,  Christopher H. SKELT

发明人： Paul Allan JOHNSON ,  James A. TENCATE ,  Pierre-Yves LE BAS ,  Robert A. GUYER ,  Cung Khac VU ,  Christopher H. SKELT

IPC分类号： G01V1/46

CPC分类号： G01V1/46

摘要： In some aspects of the disclosure, a method and an apparatus is disclosed for investigating material surrounding the borehole. The method includes generating within a borehole an intermittent low frequency vibration that propagates as a tube wave longitudinally to the borehole and induces a nonlinear response in one or more features in the material that are substantially perpendicular to a longitudinal axis of the borehole; generating within the borehole a sequence of high frequency pulses directed such that they travel longitudinally to the borehole within the surrounding material; and receiving, at one or more receivers positionable in the borehole, a signal that includes components from the low frequency vibration and the sequence of high frequency pulses during intermittent generation of the low frequency vibration, to investigate the material surrounding the borehole.

摘要翻译： 在本公开的一些方面，公开了一种用于调查围绕钻孔的材料的方法和装置。 该方法包括在钻孔内产生间歇性低频振动，其以管波纵向传播到钻孔，并且在基本上垂直于钻孔的纵向轴线的材料中的一个或多个特征中引起非线性响应; 在钻孔内产生一系列高频脉冲，其指向使得它们纵向移动到周围材料内的钻孔; 并且在位于钻孔中的一个或多个接收器处接收在低频振动的间歇期间包括来自低频振动和高频脉冲序列的分量的信号，以研究钻孔周围的材料。