公开(公告)号：US5426368A

公开(公告)日：1995-06-20

申请号：US9467

申请日：1993-01-27

申请人： Dominique Benimeli ,  Dylan H. Davies ,  Jan W. Smits ,  Jacque R. Tabanou

发明人： Dominique Benimeli ,  Dylan H. Davies ,  Jan W. Smits ,  Jacque R. Tabanou

IPC分类号： E21B47/08 ,  G01B7/13 ,  G01V3/20 ,  G01V3/24

CPC分类号： E21B47/08 ,  G01V3/24

摘要： A logging method and apparatus for investigating the geometrical characteristics of a borehole comprises an array of circumferentially spaced apart azimuthal current electrodes (Aaz.sub.i) disposed on a sonde (21), and an annular current electrode (A) longitudinally spaced apart from the array of azimuthal electrodes. In a method of investigating the geometrical characteristics of the borehole, currents (Ic.sub.i) are emitted between the azimuthal electrodes and the annular electrode (A). Monitor electrodes (M, Maz.sub.i) are respectively associated with the current electrodes (A, Aaz.sub.i). The potential differences (Vc.sub.i) between annular monitor electrodes (MAz.sub.i) are detected. In response to the detected potential differences, output signals (Rc.sub.i) are generated indicative of the distances between the sonde and the wall of the borehole in a plurality of directions around the sonde. The technique can be applied to azimuthal resistivity measurements of earth formations for correcting said measurements for sonde eccentring and/or the irregular shape of the section of the borehole.

摘要翻译： 用于研究钻孔的几何特征的测井方法和装置包括设置在探头（21）上的周向间隔开的方位电流电极（Aazi）的阵列，以及与方位角阵列纵向间隔开的环形电流电极（A） 电极。 在研究钻孔的几何特征的方法中，在方位电极和环形电极（A）之间发射电流（Ici）。 监视电极（M，Mazi）分别与当前电极（A，Aazi）相关联。 检测环形监测电极（MAzi）之间的电位差（Vci）。 响应于检测到的电位差，产生输出信号（Rci），指示在探头周围的多个方向上探测器与钻孔壁之间的距离。 该技术可以应用于地球地层的方位电阻率测量，用于校正探测器偏心的所述测量和/或钻孔部分的不规则形状。

公开(公告)号：US20060250136A1

公开(公告)日：2006-11-09

申请号：US10527926

申请日：2003-09-17

申请人： Dominique Benimeli ,  Cyrille Levesque ,  Donald McKeon

发明人： Dominique Benimeli ,  Cyrille Levesque ,  Donald McKeon

IPC分类号： G01V3/00

CPC分类号： G01V3/20

摘要： Body (22) for measuring the resistivity of a formation (9) surrounding a well (10) equipped with a lining (11), comprising: a body (23) of a probe (22), a set of three primary voltage measurement electrodes (ea, eb, ec), an upper electrode (ea) and a lower electrode (ec) and a central electrode (eb), two electrodes (In1, In2), an upper current injection electrode (In1) and a lower current injection electrode (In2) arranged on each side of the set of primary electrodes, characterized in that it also comprises, two secondary voltage measurement electrodes (24, 26) arranged on each side of the set of primary electrodes (ea, eb, ec), and between the two current injection electrodes (In1, In2), the spacing between a secondary electrode (24, 26) and the closest primary end electrode (ea, ec) being more than 1.5 times the spacing between the primary electrodes (ea, eb, ec).

摘要翻译： 用于测量围绕装备有衬里（11）的井（10）的地层（9）的电阻率的本体（22），包括：探针（22）的主体（23），一组三个一次电压测量电极 （ea，eb，ec），上电极（ea）和下电极（ec）和中心电极（eb），两个电极（In 1，In 2），上电流注入电极（In 1） 布置在该初级电极组的每一侧的较低电流注入电极（In 2），其特征在于，它还包括布置在该组初级电极（ea，eb）的每一侧上的两个二次电压测量电极（24,26） ，ec），并且在两个电流注入电极（In 1，In 2）之间，二次电极（24,26）和最靠近的一次端电极（ea，ec）之间的间隔大于 初级电极（ea，eb，ec）。

公开(公告)号：US07298147B2

公开(公告)日：2007-11-20

申请号：US10527926

申请日：2003-09-17

申请人： Dominique Benimeli ,  Cyrille Levesque ,  Donald McKeon

发明人： Dominique Benimeli ,  Cyrille Levesque ,  Donald McKeon

IPC分类号： G01V3/02

CPC分类号： G01V3/20

摘要： Body (22) for measuring the resistivity of a formation (9) surrounding a well (10) equipped with a lining (11), comprising: a body (23) of a probe (22), a set of three primary voltage measurement electrodes (ea, eb, ec), an upper electrode (ea) and a lower electrode (ec) and a central electrode (eb), two electrodes (In1, In2), an upper current injection electrode (In1) and a lower current injection electrode (In2) arranged on each side of the set of primary electrodes, characterized in that it also comprises, two secondary voltage measurement electrodes (24, 26) arranged on each side of the set of primary electrodes (ea, eb, ec), and between the two current injection electrodes (In1, In2), the spacing between a secondary electrode (24, 26) and the closest primary end electrode (ea, ec) being more than 1.5 times the spacing between the primary electrodes (ea, eb, ec).

摘要翻译： 用于测量围绕装备有衬里（11）的井（10）的地层（9）的电阻率的本体（22），包括：探针（22）的主体（23），一组三个一次电压测量电极 （ea，eb，ec），上电极（ea）和下电极（ec）和中心电极（eb），两个电极（In 1，In 2），上电流注入电极（In 1） 布置在该初级电极组的每一侧的较低电流注入电极（In 2），其特征在于，它还包括布置在该组初级电极（ea，eb）的每一侧上的两个二次电压测量电极（24,26） ，ec），并且在两个电流注入电极（In 1，In 2）之间，二次电极（24,26）和最靠近的一次端电极（ea，ec）之间的间隔大于 初级电极（ea，eb，ec）。

公开(公告)号：US06545477B1

公开(公告)日：2003-04-08

申请号：US09980544

申请日：2002-03-05

申请人： Paul Beguin ,  Dominique Benimeli ,  Patrick Ehret ,  Francois Hecquet ,  Peter Van Der Wal ,  Marie-Therese Gounot

发明人： Paul Beguin ,  Dominique Benimeli ,  Patrick Ehret ,  Francois Hecquet ,  Peter Van Der Wal ,  Marie-Therese Gounot

IPC分类号： G01V302

CPC分类号： G01R27/20 ,  G01V3/20

摘要： The invention relates to a method of surveying a geological formation through which a cased borehole passes, said method being characterized by the fact that: in a first step, current is injected into the casing (11) at a first point (In1) spaced apart longitudinally from said formation so as to cause current to leak into said formation, and electrodes (a, b, c) defining two consecutive sections of casing situated at the level of said formation ,ire used to measure the respective potential drops along said sections; in a second step, current is injected into the casing at a second point (In2) spaced apart longitudinally from the formation and situated on the opposite side thereof from said first point, so as to cause current to leak into the formation, and said electrodes are used to measure the potential drops along said sections; the corresponding measurements of the two steps are combined to obtain the values corresponding to a circuit formed by the casing between the two injection points is and essentially exempt from leakage into the formation; and the current leakage that is indicative of the resistivity of the formation is determined on the basis of the measurements taken in the first step and in the second step, and of the values resulting from said combination.

摘要翻译： 本发明涉及一种对套管井眼通过的地质构造进行测量的方法，所述方法的特征在于：在第一步骤中，电流在间隔开的第一点（In1）处注入到壳体（11）中 纵向地从所述地层引起电流泄漏到所述地层中，并且限定位于所述地层水平处的壳体两个连续部分的电极（a，b，c）用于测量沿着所述区段的各个潜在的液滴; 在第二步骤中，电流在与地层纵向间隔开的第二点（In2）处注入到壳体中，并且位于与所述第一点相反的一侧上，从而使电流泄漏到地层中，并且所述电极 用于测量沿着所述部分的电位降;两个步骤的对应测量结合以获得对应于由两个注射点之间的壳体形成的电路的值 并且基本上免于泄漏进入地层; 并且基于在第一步骤和第二步骤中进行的测量以及由所述组合产生的值来确定表示地层电阻率的电流泄漏。

公开(公告)号：US06894500B2

公开(公告)日：2005-05-17

申请号：US10488665

申请日：2002-08-08

申请人： Dominique Benimeli

发明人： Dominique Benimeli

IPC分类号： G01V3/24 ,  G01V3/02

CPC分类号： G01V3/24

摘要： Apparatus for measuring the resistivity of a formation surrounding a borehole having a conductive casing comprises a tool body; first and second current injectors spaced apart on the tool body for injecting current into the casing; and an insulating body portion disposed between the current injectors, at least three ring electrodes being mounted on the insulating body portion between the current injectors. A method of determining the resistivity of a geological formation surrounding a borehole having a conductive casing comprises positioning the tool in the borehole, applying an electric current to the casing from at least one of the current injectors such that current leaks into the formation from the casing at the level of the ring electrodes; shunting the current by a feedback circuit connected to a first pair of the ring electrodes and measuring the voltage drop due to current leaking in to the formation across a second pair of the ring electrodes, the feedback circuit being configured such that the current flowing along the casing at the level of the first pair of ring electrodes is small compared with the shunt current; determining the leakage current into the formation from the voltage drop measured across the second pair of electrodes; and determining the resistivity of the formation from the leakage current.

摘要翻译： 用于测量围绕具有导电壳体的钻孔的地层的电阻率的装置包括工具主体; 在工具主体上间隔开的第一和第二电流注入器，用于将电流注入到壳体中; 以及设置在电流注入器之间的绝缘体部分，至少三个环形电极安装在电流注入器之间的绝缘体部分上。 确定具有导电壳体的井眼周围的地质层的电阻率的方法包括将工具定位在钻孔中，从电流注入器中的至少一个向外壳施加电流，使得电流从壳体泄漏到地层中 在环形电极的水平; 通过连接到第一对环形电极的反馈电路对电流进行分流，并且测量由于电流泄漏到跨越第二对环形电极的形成的电压的电压降，反馈电路被配置为使得沿着 第一对环形电极的电平与分流电流相比较小; 从跨越第二对电极测量的电压降确定进入地层的漏电流; 并从泄漏电流确定地层的电阻率。

公开(公告)号：US06667621B1

公开(公告)日：2003-12-23

申请号：US09979876

申请日：2002-02-11

申请人： Dominique Benimeli

发明人： Dominique Benimeli

IPC分类号： G01V302

CPC分类号： G01V3/20

摘要： The invention relates to a method and apparatus for studying the resistivity of a geological formation around a borehole fitted with metal casing. An electric current is applied to the casing so as to cause current to leak into said formation at a given level, and said current is shunted by a feedback circuit in contact with the casing on either side of the measurement level, said circuit being organized to ensure that the current flowing along the casing at said level is less compared with the shunt current, the difference between the voltage drops on the adjacent sections of casing situated on either side of the measurement level is determined, and the leakage current (Ifor) is deduced therefrom.

摘要翻译： 本发明涉及一种用于研究围绕安装有金属外壳的钻孔的地质构造的电阻率的方法和装置。 电流被施加到壳体，以使电流以给定的电平泄漏到所述地层中，并且所述电流由与测量水平两侧的壳体接触的反馈电路分流，所述电路被组织到 确保沿着壳体在所述电平处流动的电流与分流电流相比较小，确定位于测量电平两侧的壳体相邻部分上的电压降之间的差异，并且泄漏电流（Ifor） 从中推断出。