公开(公告)号：US06919724B2

公开(公告)日：2005-07-19

申请号：US10240646

申请日：2001-03-29

申请人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman ,  Abdurrahman Sezginer

发明人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman ,  Abdurrahman Sezginer

IPC分类号： G01V3/24 ,  G01V3/18

CPC分类号： G01V3/24

摘要： The present invention relates to a method of investigating the wall (2) of a borehole in a geological formation by means of two injectors (4, 5) with a potential V being applied between them and in measuring the potential difference δV between two electrically isolated measurement electrodes (6) situated between the two injectors (4, 5) and spaced apart from the formation by an insulating layer (1), in which the resistivity of the formation is obtained from the measured values of δV, V and I, with corrections being made for the effects due to the nature and the thickness of the insulating layer (1). In a first variant these corrections are based on a correction factor obtained from curves of K=Rt.I/δV as a function of the impedance V/I of the injector. In a second variant these corrections are obtained by estimating the current IF actually injected into the formation while taking account of leakage current IL, and calculating the resistivity of the formation from the equation (I). The invention also provides an investigation device enabling the values of IF and/or IL to be estimated. Rt = k c ⁢ δ ⁢   ⁢ V I F = k c ⁢ δ ⁢   ⁢ V I - I L ( I )

公开(公告)号：US06891377B2

公开(公告)日：2005-05-10

申请号：US10240639

申请日：2001-03-29

申请人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman

发明人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman

IPC分类号： G01V3/24 ,  G01V3/18

CPC分类号： G01V3/24

摘要： The present invention relates to apparatus for a tool for investigating the wall of a borehole in a geological formation, the apparatus comprising: a non-conductive pad having an inside face and an outside face for pressing against the wall; a set of measurement electrodes mounted on the outside face of the pad and means for measuring the potential difference between two measurement electrodes; and both a source electrode adapted to inject current into the geological formation and a return electrode, the set of measurement electrodes being situated between the source electrode and the return electrode for the current; the apparatus being characterized in that the pad comprises an electrically conductive portion covering the entire measurement electrode zone and electrically insulated from the measurement electrodes.

摘要翻译： 本发明涉及一种用于调查地质构造中的钻孔壁的工具的装置，该装置包括：非导电垫，其具有用于压靠壁的内表面和外表面; 安装在垫的外表面上的一组测量电极和用于测量两个测量电极之间的电位差的装置; 以及适于将电流注入地质层的源电极和返回电极，该组测量电极位于源电极和用于电流的返回电极之间; 该装置的特征在于，该垫包括覆盖整个测量电极区并与测量电极电绝缘的导电部分。

公开(公告)号：US20070030008A1

公开(公告)日：2007-02-08

申请号：US10563900

申请日：2004-07-07

申请人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman ,  Richard Bloemenkamp

发明人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman ,  Richard Bloemenkamp

IPC分类号： G01V3/00

CPC分类号： G01V3/20 ,  G01V3/38

摘要： The invention concerns an apparatus for investigating the wall of a borehole filled with non-conductive mud, said apparatus comprising: a pad having an inside face and an outside face for pressing against the wall of the borehole; a set of measurement electrodes mounted on the outside face of the pad, potentials differences being measured between said measurement electrodes in order to provide measured points representative of the resistivity of the formation; both a source electrode and a return electrode adapted to inject current into the formation, the set of measurement electrodes being situated between the source electrode and the return electrode.

摘要翻译： 本发明涉及一种用于调查填充有非导电泥浆的井眼的壁的装置，所述装置包括：垫，其具有用于压靠钻孔壁的内表面和外表面; 安装在垫的外表面上的一组测量电极，在所述测量电极之间测量电位差，以提供表示地层电阻率的测量点; 源电极和适于将电流注入地层的返回电极，该组测量电极位于源电极和返回电极之间。

公开(公告)号：US07265553B2

公开(公告)日：2007-09-04

申请号：US10563900

申请日：2004-07-07

申请人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman ,  Richard Bloemenkamp

发明人： Philip Cheung ,  Andrew Hayman ,  Dennis Pittman ,  Richard Bloemenkamp

IPC分类号： G01V3/18

CPC分类号： G01V3/20 ,  G01V3/38

摘要： The invention concerns an apparatus for investigating the wall of a borehole tilled with non-conductive mud, said apparatus comprising: a pad having an inside face and an outside face for pressing against the wall of the borehole; a set of measurement electrodes mounted on the outside face of the pad, potentials differences being measured between said measurement electrodes in order to provide measured points representative of the resistivity of the formation; both a source electrode and a return electrode adapted to inject current into the formation, the set of measurement electrodes being situated between the source electrode and the return electrode.

摘要翻译： 本发明涉及一种用于研究用非导电泥浆填充的钻孔的壁的装置，所述装置包括：垫，其具有用于压靠钻孔壁的内表面和外表面; 安装在垫的外表面上的一组测量电极，在所述测量电极之间测量电位差，以提供表示地层电阻率的测量点; 源电极和适于将电流注入地层的返回电极，该组测量电极位于源电极和返回电极之间。

公开(公告)号：US07119544B2

公开(公告)日：2006-10-10

申请号：US10510320

申请日：2003-04-10

申请人： Andrew Hayman ,  Philip Cheung

发明人： Andrew Hayman ,  Philip Cheung

IPC分类号： G01V3/18

CPC分类号： G01V3/24

摘要： A method for electrically investigating a wall of a borehole in a geologic formation including injecting a current into the formation at a first position along the wall and returning the current at a second position along the wall, the formation current having a frequency below about 100 kHz, measuring a voltage in the formation between a third position and a fourth position along the wall, the third and fourth positions being located between the first and second positions, and determining an amplitude of a component of the voltage in phase with the current.

摘要翻译： 一种用于电学研究地质构造中的井眼的壁的方法，包括在沿着壁的第一位置处将电流注入到地层中并沿着壁返回第二位置的电流，地层电流具有低于约100kHz的频率 测量沿着所述壁的第三位置和第四位置之间的地层中的电压，所述第三和第四位置位于所述第一位置和所述第二位置之间，并且确定所述电压的分量的振幅与所述电流同相。

公开(公告)号：US08754651B2

公开(公告)日：2014-06-17

申请号：US12945928

申请日：2010-11-15

申请人： Tarek Habashy ,  Andrew Hayman ,  Yong-Hua Chen ,  Dzevat Omeragic ,  Philip Cheung

发明人： Tarek Habashy ,  Andrew Hayman ,  Yong-Hua Chen ,  Dzevat Omeragic ,  Philip Cheung

IPC分类号： G01V3/10

CPC分类号： G01V3/20 ,  E21B49/005 ,  G01V3/088 ,  G01V3/24

摘要： A system and method for imaging properties of subterranean formations in a wellbore is provided. The system comprises a formation sensor for collecting currents injected into the subterranean formations, the formation sensor positionable on a downhole tool deployable into the wellbore. The system comprises a controller for controlling the formation sensor and a formation imaging unit. The formation imaging unit comprises a current management unit for collecting data from the currents injected into the subterranean formations, the currents having at least two different frequencies. The formation imaging unit comprises a drilling mud data unit for determining at least one drilling mud parameter, a formation data unit for determining at least one formation parameter from the collected data, and an inversion unit for determining at least one formation property by inverting the at least one formation parameter.

摘要翻译： 提供了一种用于在井筒中成像地层的特性的系统和方法。 该系统包括用于收集注入到地层中的电流的地层传感器，地层传感器可定位在可部署到井筒中的井下工具上。 该系统包括用于控制地层传感器和地层成像单元的控制器。 地层成像单元包括用于从注入到地层中的电流收集数据的电流管理单元，该电流具有至少两个不同的频率。 地层成像单元包括用于确定至少一个钻井泥浆参数的钻井泥浆数据单元，用于根据所收集的数据确定至少一个地层参数的地层数据单元，以及用于通过将at 至少一个地层参数。

公开(公告)号：US20120119744A1

公开(公告)日：2012-05-17

申请号：US12945928

申请日：2010-11-15

申请人： Tarek Habashy ,  Andrew Hayman ,  Yong-Hua Chen ,  Dzevat Omeragic ,  Philip Cheung

发明人： Tarek Habashy ,  Andrew Hayman ,  Yong-Hua Chen ,  Dzevat Omeragic ,  Philip Cheung

IPC分类号： G01V3/18

CPC分类号： G01V3/20 ,  E21B49/005 ,  G01V3/088 ,  G01V3/24

摘要： A system and method for imaging properties of subterranean formations in a wellbore is provided. The system comprises a formation sensor for collecting currents injected into the subterranean formations, the formation sensor positionable on a downhole tool deployable into the wellbore. The system comprises a controller for controlling the formation sensor and a formation imaging unit. The formation imaging unit comprises a current management unit for collecting data from the currents injected into the subterranean formations, the currents having at least two different frequencies. The formation imaging unit comprises a drilling mud data unit for determining at least one drilling mud parameter, a formation data unit for determining at least one formation parameter from the collected data, and an inversion unit for determining at least one formation property by inverting the at least one formation parameter.

摘要翻译： 提供了一种用于在井筒中成像地层的特性的系统和方法。 该系统包括用于收集注入到地层中的电流的地层传感器，地层传感器可定位在可部署到井筒中的井下工具上。 该系统包括用于控制地层传感器和地层成像单元的控制器。 地层成像单元包括用于从注入到地层中的电流收集数据的电流管理单元，该电流具有至少两个不同的频率。 地层成像单元包括用于确定至少一个钻井泥浆参数的钻井泥浆数据单元，用于根据所收集的数据确定至少一个地层参数的地层数据单元，以及用于通过将at 至少一个地层参数。

公开(公告)号：US20050179437A1

公开(公告)日：2005-08-18

申请号：US10510320

申请日：2003-04-10

申请人： Andrew Hayman ,  Philip Cheung

发明人： Andrew Hayman ,  Philip Cheung

IPC分类号： G01V1/00 ,  G01V3/24 ,  G01V3/00 ,  G01V3/02

CPC分类号： G01V3/24

摘要： A method for electrically investigating a wall of a borehole in a geologic formation including injecting a current into the formation at a first position along the wall and returning the current at a second position along the wall, the formation current having a frequency below about 100 kHz, measuring a voltage in the formation between a third position and a fourth position along the wall, the third and fourth positions being located between the first and second positions, and determining an amplitude of a component of the voltage in phase with the current.

摘要翻译： 一种用于电学研究地质构造中的井眼的壁的方法，包括在沿着壁的第一位置处将电流注入到地层中并沿着壁返回第二位置的电流，地层电流具有低于约100kHz的频率 测量沿着所述壁的第三位置和第四位置之间的地层中的电压，所述第三和第四位置位于所述第一位置和所述第二位置之间，并且确定所述电压的分量的振幅与所述电流同相。

公开(公告)号：US08933700B2

公开(公告)日：2015-01-13

申请号：US13124852

申请日：2009-10-22

申请人： Andrew Hayman

发明人： Andrew Hayman

IPC分类号： G01V3/00

CPC分类号： G01V3/24

摘要： The invention is concerned with a tool for imaging a formation, the tool comprising: a pad capable of alignment adjacent a wall of the formation. The pad has located thereon an imaging electrode for injecting current into the formation. There is a first return electrode separated from the imaging electrode for receiving the injected current. There is at least one recessed electrode that is located at a different distance from the wall of the formation as the other electrodes.

摘要翻译： 本发明涉及用于对地层进行成像的工具，该工具包括：能够在地层的壁附近对准的垫。 该垫已经位于其上用于将电流注入到地层中的成像电极。 存在与用于接收注入电流的成像电极分离的第一返回电极。 至少有一个凹陷电极与地层的壁位于与其他电极不同的距离处。

公开(公告)号：US20110241689A1

公开(公告)日：2011-10-06

申请号：US13124848

申请日：2009-10-22

申请人： Andrew Hayman

发明人： Andrew Hayman

IPC分类号： G01V3/18

CPC分类号： G01V3/24

摘要： The invention is concerned with a tool and method for imaging a formation through a substantially non-conductive medium. The tool comprises first circuitry for injecting a current into the formation, wherein a complex impedance to the current is measured. Second circuitry for determining a phase angle of an impedance of the non-conductive medium and third circuitry for determining a component of the complex impedance that is orthogonal to the phase angle.

摘要翻译： 本发明涉及用于通过基本上非导电介质成像地层的工具和方法。 该工具包括用于向地层注入电流的第一电路，其中测量到电流的复阻抗。 用于确定非导电介质的阻抗的相位角的第二电路和用于确定与所述相位角正交的复阻抗的分量的第三电路。