IMAGING USING DIRECTIONAL RESISTIVITY MEASUREMENTS
    1.
    发明申请
    IMAGING USING DIRECTIONAL RESISTIVITY MEASUREMENTS 审中-公开
    使用方向电阻测量的成像

    公开(公告)号:US20130027044A1

    公开(公告)日:2013-01-31

    申请号:US13622905

    申请日:2012-09-19

    CPC classification number: G01V3/28

    Abstract: The present disclosure relates to a method to produce an image of a subsurface formation using directional measurements. A downhole logging tool having one or more transmitters and one or more receivers, and being capable of making directional measurement, is used to measure the voltage in a particular receiver due to a particular transmitter for one or more transmitter/receiver pairs, at least one of those voltage measurements being a directional measurement. The complex (phasor) voltage recorded on a receiver coil is divided by the complex voltage recorded at another reference receiver coil. Alternatively, we can use the ratio of a receiver voltage at a particular rotation angle of the tool divided by the voltage on the same receiver when the tool has rotated by an angle of 180 degrees. The information in those ratios is combined to produce images of the resistivity of the subsurface formation surrounding the tool.

    Abstract translation: 本公开涉及使用方向测量来产生地下地层的图像的方法。 具有一个或多个发射器和一个或多个接收器并且能够进行方向测量的井下测井工具用于测量由于用于一个或多个发射机/接收机对的特定发射机的特定接收机中的电压,至少一个 那些电压测量是方向测量。 记录在接收器线圈上的复数(相量)电压除以在另一基准接收器线圈上记录的复数电压。 或者,当刀具旋转角度为180度时,我们可以使用刀具的特定旋转角度的接收器电压与同一接收器上的电压的比值。 组合这些比率的信息以产生围绕工具的地下地层的电阻率的图像。

    Imaging using directional resistivity measurements
    2.
    发明授权
    Imaging using directional resistivity measurements 有权
    使用方向电阻率测量成像

    公开(公告)号:US08294467B2

    公开(公告)日:2012-10-23

    申请号:US12563569

    申请日:2009-09-21

    CPC classification number: G01V3/28

    Abstract: The present disclosure relates to a method to produce an image of a subsurface formation using directional measurements. A downhole logging tool having one or more transmitters and one or more receivers, and being capable of making directional measurements, is used to measure the voltage in a particular receiver due to a particular transmitter for one or more transmitter/receiver pairs, at least one of those voltage measurements being a directional measurement. The complex (phasor) voltage recorded on a receiver coil is divided by the complex voltage recorded at another reference receiver coil. Alternatively, we can use the ratio of a receiver voltage at a particular rotation angle of the tool divided by the voltage on the same receiver when the tool has rotated by an angle of 180 degrees. The information in those ratios is combined to produce images of the resistivity of the subsurface formation surrounding the tool.

    Abstract translation: 本公开涉及使用方向测量来产生地下地层图像的方法。 具有一个或多个发射器和一个或多个接收器并且能够进行方向测量的井下测井工具用于测量特定接收机中由于一个或多个发射机/接收机对的特定发射机的电压,至少一个 那些电压测量是方向测量。 记录在接收器线圈上的复数(相量)电压除以在另一基准接收器线圈上记录的复数电压。 或者,当刀具旋转角度为180度时,我们可以使用刀具的特定旋转角度的接收器电压与同一接收器上的电压的比值。 组合这些比率的信息以产生围绕工具的地下地层的电阻率的图像。

    IMAGING USING DIRECTIONAL RESISTIVITY MEASUREMENTS
    3.
    发明申请
    IMAGING USING DIRECTIONAL RESISTIVITY MEASUREMENTS 有权
    使用方向电阻测量的成像

    公开(公告)号:US20110068798A1

    公开(公告)日:2011-03-24

    申请号:US12563569

    申请日:2009-09-21

    CPC classification number: G01V3/28

    Abstract: The present disclosure relates to a method to produce an image of a subsurface formation using directional measurements. A downhole logging tool having one or more transmitters and one or more receivers, and being capable of making directional measurements, is used to measure the voltage in a particular receiver due to a particular transmitter for one or more transmitter/receiver pairs, at least one of those voltage measurements being a directional measurement. The complex (phasor) voltage recorded on a receiver coil is divided by the complex voltage recorded at another reference receiver coil. Alternatively, we can use the ratio of a receiver voltage at a particular rotation angle of the tool divided by the voltage on the same receiver when the tool has rotated by an angle of 180 degrees. The information in those ratios is combined to produce images of the resistivity of the subsurface formation surrounding the tool.

    Abstract translation: 本公开涉及使用方向测量来产生地下地层图像的方法。 具有一个或多个发射器和一个或多个接收器并且能够进行方向测量的井下测井工具用于测量特定接收机中由于一个或多个发射机/接收机对的特定发射机的电压,至少一个 那些电压测量是方向测量。 记录在接收器线圈上的复数(相量)电压除以在另一基准接收器线圈上记录的复数电压。 或者,当刀具旋转角度为180度时,我们可以使用刀具的特定旋转角度的接收器电压与同一接收器上的电压的比值。 组合这些比率的信息以产生围绕工具的地下地层的电阻率的图像。

    METHOD AND APPARATUS FOR LOCATING WELL CASINGS FROM AN ADJACENT WELLBORE
    4.
    发明申请
    METHOD AND APPARATUS FOR LOCATING WELL CASINGS FROM AN ADJACENT WELLBORE 有权
    用于从相邻的井筒定位井壳的方法和装置

    公开(公告)号:US20070126426A1

    公开(公告)日:2007-06-07

    申请号:US11550839

    申请日:2006-10-19

    CPC classification number: G01V3/26 E21B47/02216

    Abstract: A wellbore tool for locating a target wellbore containing a conductive member from a second wellbore and directing the trajectory of the second wellbore relative to the target wellbore includes an electric current driver having an insulated gap; a three-axis magnetometer positioned within a non-magnetic housing that is disposed within a non-magnetic tubular, the three-axis magnetometer positioned below the electric current driver; a drill bit positioned below the three-axis magnetometer; a hollow tubular connected between the electric current driver and the three-axis magnetometer; and a measurement-while-drilling tool. The current driver generates an electric current across the gap to the portion of the tool below the insulated gap. In a method a current is generated across the insulated gap to the portion of the tool below the insulated gap to the conductive material in the target wellbore returning to a portion of the bottom hole assembly above the insulated gap thereby producing a target magnetic field. Measuring the target magnetic field at the bottom hole assembly and the earth's magnetic field; and determining the position of the second wellbore relative to the target wellbore. Then steering the bottom hole assembly to drill the second wellbore along a trajectory relative to the target wellbore.

    Abstract translation: 用于从第二井筒定位包含导电构件并且相对于目标井筒引导第二井眼的轨迹的井眼工具包括具有绝缘间隙的电流驱动器; 位于非磁性壳体内的三轴磁力计,其设置在非磁性管内,位于电流驱动器下方的三轴磁力计; 位于三轴磁力计下方的钻头; 连接在电流驱动器和三轴磁力计之间的中空管; 和钻孔测量工具。 电流驱动器通过间隙产生电流到绝缘间隙下方的工具部分。 在一种方法中,跨绝缘间隙产生的电流跨越到绝缘间隙下方的工具部分到目标井眼中的导电材料,返回到绝缘间隙之上的一部分底孔组件,从而产生目标磁场。 测量井底组件和地球磁场的目标磁场; 以及确定第二井眼相对于目标井筒的位置。 然后转向底孔组件以沿相对于目标井筒的轨迹钻第二井眼。

    APPARATUS AND METHODS FOR DETERMINING ISOTROPIC AND ANISOTROPIC FORMATION RESISTIVITY IN THE PRESENCE OF INVASION
    5.
    发明申请
    APPARATUS AND METHODS FOR DETERMINING ISOTROPIC AND ANISOTROPIC FORMATION RESISTIVITY IN THE PRESENCE OF INVASION 有权
    用于确定入侵时存在的各向异性和各向异性形成电阻率的装置和方法

    公开(公告)号:US20050088181A1

    公开(公告)日:2005-04-28

    申请号:US10707813

    申请日:2004-01-14

    CPC classification number: G01V3/28

    Abstract: A logging tool includes a tool body; a simple transmitter comprising a single antenna disposed on the tool body; four simple receivers, each comprising a single antenna, disposed on the tool body and spaced apart from the simple transmitter to form four arrays; and an electronic module for controlling operation of the four arrays, wherein the simple transmitter is configured to generate a magnetic field having a transverse component, wherein each of the four simple receivers is sensitive to the magnetic field generated by the simple transmitter, and at least one of the four simple receivers is sensitive to the transverse component of the magnetic field generated by the simple transmitter, and wherein the four arrays are configured to provide measurements at at least three depths of investigation.

    Abstract translation: 测井工具包括工具体; 简单的发射机,包括设置在所述工具主体上的单个天线; 四个简单接收器,每个包括单个天线,设置在工具主体上并与简单发射器间隔开以形成四个阵列; 以及用于控制四个阵列的操作的电子模块,其中简单发射器被配置为产生具有横向分量的磁场,其中四个简单接收机中的每一个对由简单发射机产生的磁场敏感,并且至少 四个简单接收器之一对由简单发射器产生的磁场的横向分量敏感,并且其中四个阵列被配置为在至少三个调查深度提供测量。

    Determining anisotropic resistivity
    6.
    发明授权
    Determining anisotropic resistivity 有权
    确定各向异性电阻率

    公开(公告)号:US08558548B2

    公开(公告)日:2013-10-15

    申请号:US12844929

    申请日:2010-07-28

    CPC classification number: G01V3/28

    Abstract: The present disclosure relates to a method to determine the vertical resistivity of a subsurface formation. A downhole logging tool having a plurality of spaced antennas, at least one of which is a transverse antenna, at least two of which are tilted antennas, and at least two of which are axial antennas is provided. Measurements involving the transverse and/or the tilted antennas of the downhole logging tool are obtained. Voltage ratios are formed using the measurements, and conditioning factors are formed by raising the determined voltage ratios not involving the transverse antenna to some arbitrary power. The sum of the exponents of the conditioning factors preferably equals one. A voltage ratio involving the transverse antenna is multiplied by the conditioning factors, and the vertical resistivity of the subsurface formation is determined using the resulting ratio.

    Abstract translation: 本公开涉及一种确定地下地层垂直电阻率的方法。 一种具有多个间隔天线的井下测井工具,其中至少一个是横向天线,其中至少两个是倾斜天线,并且其中至少两个是轴向天线。 获得涉及井下测井工具的横向和/或倾斜天线的测量。 使用测量形成电压比,并且通过将不涉及横向天线的确定的电压比提高到某种任意功率而形成调节因子。 调节因子的指数之和优选等于1。 涉及横向天线的电压比乘以调节因子,并且使用所得到的比率来确定地下地层的垂直电阻率。

    DETERMINING ANISOTROPIC RESISTIVITY
    7.
    发明申请
    DETERMINING ANISOTROPIC RESISTIVITY 有权
    测定各向异性电阻率

    公开(公告)号:US20120025834A1

    公开(公告)日:2012-02-02

    申请号:US12844929

    申请日:2010-07-28

    CPC classification number: G01V3/28

    Abstract: The present disclosure relates to a method to determine the vertical resistivity of a subsurface formation. A downhole logging tool having a plurality of spaced antennas, at least one of which is a transverse antenna, at least two of which are tilted antennas, and at least two of which are axial antennas is provided. Measurements involving the transverse and/or the tilted antennas of the downhole logging tool are obtained. Voltage ratios are formed using the measurements, and conditioning factors are formed by raising the determined voltage ratios not involving the transverse antenna to some arbitrary power. The sum of the exponents of the conditioning factors preferably equals one. A voltage ratio involving the transverse antenna is multiplied by the conditioning factors, and the vertical resistivity of the subsurface formation is determined using the resulting ratio.

    Abstract translation: 本公开涉及一种确定地下地层垂直电阻率的方法。 一种具有多个间隔天线的井下测井工具,其中至少一个是横向天线,其中至少两个是倾斜天线,并且其中至少两个是轴向天线。 获得涉及井下测井工具的横向和/或倾斜天线的测量。 使用测量形成电压比,并且通过将不涉及横向天线的确定的电压比提高到某种任意功率而形成调节因子。 调节因子的指数之和优选等于1。 涉及横向天线的电压比乘以调节因子,并且使用所得到的比率来确定地下地层的垂直电阻率。

    Induction measurements with reduced borehole effects
    9.
    发明授权
    Induction measurements with reduced borehole effects 有权
    感应测量具有降低的井眼效应

    公开(公告)号:US07138897B2

    公开(公告)日:2006-11-21

    申请号:US10711309

    申请日:2004-09-09

    CPC classification number: G01V3/28

    Abstract: An induction tool includes a conductive mandrel; at least one array including a transmitter, a bucking coil, and a receiver disposed in an insulating tool body surrounding the conductive mandrel; and an electrode disposed on the insulating tool body at a selected location between the bucking coil and the receiver, wherein the selected location is spaced from the transmitter at a distance corresponding approximately to the harmonic mean of the distance between the transmitter and the bucking coil and the distance between the transmitter and the receiver, and wherein the electrode includes a contact forming a conductive path to the conductive mandrel. Additional electrodes may be disposed above and below each transmitter and receiver coil to reduce sensitivity to eccentricity of the tool in the borehole.

    Abstract translation: 感应工具包括导电心轴; 至少一个阵列,包括发射器,降压线圈和设置在围绕导电心轴的绝缘工具主体中的接收器; 以及电极,其设置在所述绝缘工具主体之间的所述抵消线圈和所述接收器之间的选定位置处,其中所述选定位置与所述发射器间隔开大致相当于所述发射器和所述抗弯线圈之间的距离的谐波平均值的距离;以及 发射器和接收器之间的距离,并且其中电极包括形成到导电心轴的导电路径的触点。 附加的电极可以设置在每个发射器和接收器线圈之上和之下,以降低钻孔中工具的偏心度的灵敏度。

    [METHOD OF CORRECTING TRIAXIAL INDUCTION ARRAYS FOR BOREHOLE EFFECT]
    10.
    发明申请
    [METHOD OF CORRECTING TRIAXIAL INDUCTION ARRAYS FOR BOREHOLE EFFECT] 有权
    [用于修正井眼效应的三次感应阵列的方法]

    公开(公告)号:US20050256642A1

    公开(公告)日:2005-11-17

    申请号:US10708719

    申请日:2004-03-19

    CPC classification number: G01V3/38

    Abstract: A method for modeling borehole effects of a transverse array induction tool includes selecting a formation-borehole model having a set of parameters, wherein the set of parameters comprises a direction of tool eccentering; determining initial values for the set of parameters; computing expected responses for a selected set of arrays from the plurality of arrays of the induction tool, wherein the computing is based on the formation-borehole model; comparing the expected responses with actual responses for the selected set of arrays; adjusting values of the set of parameters, if a difference between the expected responses and the actual responses is no less than a predetermined criterion; repeating the computing, the comparing, and the adjusting, until the difference between the expected responses and the actual responses is less than the predetermined criterion; determining the borehole effects from final values of the set of parameters.

    Abstract translation: 一种用于建模横向阵列感应工具的钻孔效应的方法包括选择具有一组参数的地层井眼模型,其中该组参数包括工具偏心的方向; 确定该组参数的初始值; 计算来自所述感应工具的所述多个阵列的所选阵列的预期响应,其中所述计算基于所述地层钻孔模型; 将预期响应与所选阵列的实际响应进行比较; 如果预期响应和实际响应之间的差异不小于预定标准,则调整参数集合的值; 重复计算,比较和调整,直到预期响应和实际响应之间的差小于预定标准; 从参数集合的最终值确定钻孔效应。

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