Shoulder bed effects removal
    1.
    发明授权
    Shoulder bed effects removal 有权
    肩部床效应消除

    公开(公告)号:US07599825B2

    公开(公告)日:2009-10-06

    申请号:US11279203

    申请日:2006-04-10

    IPC分类号: G06G7/48 G01V3/18 G01V3/00

    CPC分类号: G01V3/24

    摘要: Various technologies for removing shoulder-bed effects from measurements of an earth formation made in a wellbore. In one implementation, a methodology for removing the shoulder-bed effects includes receiving the measurements and constructing a layered model of the earth formation. Each layer has a set of parameters corresponding to one or more types of the received measurements ascribed to each layer such that the set of parameters define a parameter space for the layered model. The methodology may further include dividing the parameter space into subspaces based on relationships among the parameters, selecting from the subspaces one or more starting points, minimizing a cost function using the one or more starting points to generate one or more candidate solutions having the shoulder-bed effects removed and selecting a final solution from the one or more candidate solutions.

    摘要翻译: 用于通过测量在井眼中产生的地层的各种技术来消除肩膀床效应。 在一个实施方案中,用于去除肩膀床效应的方法包括接收测量并构建地层的分层模型。 每个层具有对应于归属于每个层的接收的测量的一种或多种类型的参数的集合,使得该组参数定义分层模型的参数空间。 该方法可以进一步包括:基于参数之间的关系将参数空间划分为子空间,从子空间中选择一个或多个起始点,使用一个或多个起始点使成本函数最小化,以生成具有肩峰位置的一个或多个候选解, 床效应被消除,并从一个或多个候选解决方案中选择最终解决方案。

    Methods for visualizing distances between wellbore and formation boundaries
    2.
    发明授权
    Methods for visualizing distances between wellbore and formation boundaries 有权
    可视化井眼与地层边界之间距离的方法

    公开(公告)号:US07925483B2

    公开(公告)日:2011-04-12

    申请号:US12610942

    申请日:2009-11-02

    IPC分类号: G06G7/48 G01V1/00

    CPC分类号: G01V1/34 G01V1/40

    摘要: A method for displaying a formation model while drilling a wellbore in the formation includes operating a well logging instrument at a measurement point in the formation along a wellbore while the wellbore is being drilled. Measurement data regarding the formation are obtained from the well logging instrument. An actual orientation of a geological structure is determined from the measurement data. A trajectory of the wellbore is displayed in three dimensions as it is being drilled through the formation. While drilling the wellbore, the geological structure is displayed along the trajectory of the wellbore according to the determined actual orientation of the geological structure. The actual orientation reflects an azimuth angle of planes corresponding to the geological structure. The trajectory of the wellbore is changed in response to displaying the determined actual orientation of the geological structure relative to the trajectory.

    摘要翻译: 一种在地层钻井时显示地层模型的方法,包括在钻井时沿井身沿地层沿测量点操作测井仪器。 从测井仪器获得关于地层的测量数据。 根据测量数据确定地质结构的实际方向。 当钻井通过地层时,井眼的轨迹显示在三维之中。 在钻井时,根据确定的地质结构的实际取向,沿着井眼的轨迹显示地质结构。 实际方向反映了与地质结构相对应的平面的方位角。 响应于显示确定的相对于轨迹的地质结构的实际取向,井眼的轨迹被改变。

    METHODS FOR VISUALIZING DISTANCES BETWEEN WELLBORE AND FORMATION BOUNDARIES
    4.
    发明申请
    METHODS FOR VISUALIZING DISTANCES BETWEEN WELLBORE AND FORMATION BOUNDARIES 有权
    用于在井眼和形成边界之间可视化距离的方法

    公开(公告)号:US20100122847A1

    公开(公告)日:2010-05-20

    申请号:US12610942

    申请日:2009-11-02

    CPC分类号: G01V1/34 G01V1/40

    摘要: A method for displaying a formation model while drilling a wellbore in the formation includes operating a well logging instrument at a measurement point in the formation along a wellbore while the wellbore is being drilled. Measurement data regarding the formation are obtained from the well logging instrument. An actual orientation of a geological structure is determined from the measurement data. A trajectory of the wellbore is displayed in three dimensions as it is being drilled through the formation. While drilling the wellbore, the geological structure is displayed along the trajectory of the wellbore according to the determined actual orientation of the geological structure. The actual orientation reflects an azimuth angle of planes corresponding to the geological structure. The trajectory of the wellbore is changed in response to displaying the determined actual orientation of the geological structure relative to the trajectory.

    摘要翻译: 一种在地层钻井时显示地层模型的方法,包括在钻井时沿井身沿地层沿测量点操作测井仪器。 从测井仪器获得关于地层的测量数据。 根据测量数据确定地质结构的实际方向。 当钻井通过地层时,井眼的轨迹显示在三维之中。 在钻井时,根据确定的地质结构的实际取向,沿着井眼的轨迹显示地质结构。 实际方向反映了与地质结构相对应的平面的方位角。 响应于显示确定的相对于轨迹的地质结构的实际取向,井眼的轨迹被改变。

    Intelligent diagnosis of environmental influence on well logs with model-based inversion
    5.
    发明授权
    Intelligent diagnosis of environmental influence on well logs with model-based inversion 有权
    通过基于模型的反演智能诊断测井对环境的影响

    公开(公告)号:US06832159B2

    公开(公告)日:2004-12-14

    申请号:US10249612

    申请日:2003-04-23

    IPC分类号: G01V1100

    CPC分类号: G01V11/00 G01V1/50

    摘要: A method for identifying environmental effects in well log data includes selecting a plurality of models, each of the plurality of models including at least one parameter to be optimized; fitting the models to the well log data by optimizing the at least one parameter, the fitting producing a plurality of optimized models; determining an indicator of goodness of fit for each of the plurality of optimized models; and selecting a model representing a best fit of the well log data based on the indicator.

    摘要翻译: 用于识别测井数据中的环境影响的方法包括选择多个模型,所述多个模型中的每个模型包括要优化的至少一个参数; 通过优化所述至少一个参数将所述模型拟合到所述测井数据,所述拟合产生多个优化模型; 确定所述多个优化模型中的每一个的适合度的指标; 并根据该指标选择表示井测井数据的最佳拟合的模型。

    Modular downhole tool system
    6.
    发明授权
    Modular downhole tool system 有权
    模块化井下工具系统

    公开(公告)号:US07394257B2

    公开(公告)日:2008-07-01

    申请号:US10907368

    申请日:2005-03-30

    IPC分类号: G01V3/18

    摘要: A downhole tool for formation logging includes a tool body configured to move in a borehole; and at least one sensor module mounted in at least one mounting location on the tool body, wherein the at least one sensor module is interchangeable with other sensor modules that make different measurements. A downhole tool may further comprise a measurement system disposed in the tool body, wherein the measurement system is operatively coupled to the at least one sensor module.

    摘要翻译: 用于地层测井的井下工具包括构造成在钻孔中移动的工具主体; 以及安装在所述工具主体上的至少一个安装位置中的至少一个传感器模块,其中所述至少一个传感器模块可与进行不同测量的其它传感器模块互换。 井下工具还可以包括设置在工具主体中的测量系统,其中测量系统可操作地联接到至少一个传感器模块。

    Methods and apparatus for measuring characteristics of a formation
around a borehole using computed focusing
    7.
    发明授权
    Methods and apparatus for measuring characteristics of a formation around a borehole using computed focusing 失效
    使用计算聚焦测量钻孔周围地层特征的方法和装置

    公开(公告)号:US5852363A

    公开(公告)日:1998-12-22

    申请号:US733130

    申请日:1996-10-18

    申请人: Jan W. Smits

    发明人: Jan W. Smits

    IPC分类号: G01V3/20 G01V3/18

    CPC分类号: G01V3/20

    摘要: A method and apparatus for determining the geometrical characteristics of a well, including insertion of a sonde of elongate shape into the well, the sonde including azimuth electrodes (A.sub.azi), an annular current electrode (A.sub.0), and at least one annular current return electrode (A). The annular current electrode (A.sub.0) emits a current I.sub.0, which flows essentially in a column of mud situated inside the well and returns to the annular current return electrodes. Signals are induced in response to the current I.sub.0 from which can be determined the geometrical characteristics of the well. Alternative embodiments include an apparatus which is symmetrical about the azimuth electrodes. High resolution measurements are obtained by computed focusing. In a first effective operating mode, currents i.sub.1 and i'.sub.1 are emitted from guard electrodes A.sub.1 and A'.sub.1 located on either side of the current electrode (A.sub.0,A'.sub.0), the current I.sub.0,1 emitted by the annular current electrode being equal to 0. In a second effective operating mode, a current I.sub.0,2 is emitted from the current electrode (A.sub.0,A'.sub.0) towards the guard electrodes, the total current I.sub.t,2 emitted from the sonde into the formation being equal to 0. Computed focusing is performed on the basis of the above two effective operating modes to simulate an operating mode in which (i) a current I.sub.0.c is emitted into the surrounding formation from the current electrode (A.sub.0,A'.sub.0); and (ii) the current I.sub.0,c is focused in the formation by emitting two currents I.sub.1,c and I'.sub.1,c from respectively the guard electrodes (A.sub.1,A'.sub.1).

    摘要翻译: 一种用于确定井的几何特性的方法和装置,包括将细长形状的探头插入井中,探空仪包括方位电极(Aazi),环形电流电极(A0)和至少一个环形电流返回电极 (一个)。 环形电流电极(A0)发射电流I0,电流I0基本上在位于阱内部的泥浆柱中流动并返回到环形电流返回电极。 响应于可以确定井的几何特性的电流I0感应信号。 替代实施例包括关于方位电极对称的装置。 通过计算聚焦获得高分辨率测量。 在第一有效操作模式中,电流i1和i'1从位于当前电极(A0,A'0)任一侧的保护电极A1和A'1发射,由环形电流电极发射的电流I0,1 在第二有效操作模式中,从当前电极(A0,A'0)朝向保护电极发射电流I0,2,从发射器发射到地层中的总电流I 2从相同的角度发射 基于上述两种有效操作模式进行计算聚焦,以模拟其中(i)从当前电极(A0,A'0)将电流I0.c发射到周围地层中的操作模式; 和(ii)电流I0,c分别通过从保护电极(A1,A'1)分别发射两个电流I1,c和I'1,c来聚焦在形成中。

    Apparatus and methods for reducing stand-off effects of a downhole tool
    8.
    发明授权
    Apparatus and methods for reducing stand-off effects of a downhole tool 有权
    降低井下工具的隔离效应的装置和方法

    公开(公告)号:US07284605B2

    公开(公告)日:2007-10-23

    申请号:US10711598

    申请日:2004-09-28

    IPC分类号: E21B47/00

    CPC分类号: E21B47/01 G01V3/30

    摘要: A method for reducing stand-off effects of a downhole tool includes disposing the downhole tool in a borehole, wherein the downhole tool comprises at least one moveable section disposed between an energy source and a receiver on the downhole tool; and activating the at least one moveable section to reduce a thickness of at least one selected from a mud layer and a mudcake between the downhole tool and a wall of the borehole. A downhole tool includes an energy source and a receiver disposed on the downhole tool; at least one moveable section disposed between the energy source and the receiver; and an activation mechanism for reducing a thickness of at least one selected from a mud layer and a mudcake between the downhole tool and a wall of a borehole.

    摘要翻译: 一种用于降低井下工具的间隔效应的方法包括将井下工具设置在钻孔中,其中井下工具包括设置在井下工具上的能量源和接收器之间的至少一个可移动部分; 以及激活所述至少一个可移动部分以减小从所述井下工具和所述钻孔壁之间的泥浆层和泥饼中选出的至少一个的厚度。 井下工具包括能量源和设置在井下工具上的接收器; 设置在所述能量源和所述接收器之间的至少一个可移动部分; 以及用于减小选自井下工具和钻孔壁之间的泥浆层和泥饼中的至少一种的厚度的激活机构。

    Insulated sleeve with conductive electrodes to reduce borehole effects for an induction tool
    9.
    发明授权
    Insulated sleeve with conductive electrodes to reduce borehole effects for an induction tool 有权
    绝缘套管带有导电电极,以减少感应工具的钻孔效应

    公开(公告)号:US07023212B2

    公开(公告)日:2006-04-04

    申请号:US11030668

    申请日:2004-12-31

    IPC分类号: G01V3/02

    CPC分类号: G01V3/28

    摘要: A well logging tool and method are disclosed comprising a conductive mandrel, an antenna array disposed around the conductive mandrel, wherein the antenna array comprises a plurality of antennas disposed on insulating supports and at least one contact spacer, the at least one contact spacer having at least one conductor channel having a contact assembly disposed therein, a sleeve disposed over the antenna array, wherein the sleeve includes at least one electrode assembly, the at least one electrode and the contact assembly adapted to provide a radially conductive path from an exterior of the well logging tool to the conductive mandrel and wherein the electrode assembly comprises a first conductor exposed to the exterior of the well logging tool and at least one second conductor conductively connected to the first conductor and exposed to an inner surface of the sleeve, wherein at least one of the first conductor or the second conductor being in sealed contact with the sleeve to prevent the passage of fluid through the sleeve.

    摘要翻译: 公开了测井工具和方法,其包括导电心轴,设置在导电心轴周围的天线阵列,其中天线阵列包括设置在绝缘支撑件上的多个天线和至少一个接触间隔件,所述至少一个接触间隔件具有 至少一个具有设置在其中的接触组件的导体通道,设置在所述天线阵列上的套筒,其中所述套筒包括至少一个电极组件,所述至少一个电极和所述接触组件适于提供从所述天线阵列的外部的径向导电路径 测井工具到导电心轴,并且其中电极组件包括暴露于测井工具的外部的第一导体和导电连接到第一导体并暴露于套筒的内表面的至少一个第二导体,其中至少 第一导体或第二导体之一与套筒密封接触以防止 流体通过套管。

    Methods and apparatuses for measuring the resistivity of drilling mud in a borehole
    10.
    发明授权
    Methods and apparatuses for measuring the resistivity of drilling mud in a borehole 有权
    测量井眼钻井泥浆电阻率的方法和装置

    公开(公告)号:US06369575B1

    公开(公告)日:2002-04-09

    申请号:US09442854

    申请日:1999-11-18

    IPC分类号: G01V324

    CPC分类号: G01V3/20

    摘要: A method of measuring the resistivity of drilling mud in a borehole passing through a terrestrial formation includes the steps of a) inserting a sonde into the borehole, the sonde having an elongate body provided with at least one annular current electrode (A0, A′0) and at least two annular guard electrodes (A, A′, A1, A′1, A2, A′2) situated on either side of the annular current electrode; b) performing computed focusing to simulate an operating mode in which at least one current I0 is emitted into the surrounding formation from the annular current electrode, the current I0 being focused in the formation by emitting two currents I1 and I′1 from the two annular guard electrodes situated on either side of the annular current electrode; and c) producing a signal representative of the resistivity Rm of the drilling mud from the simulated operating mode. Apparatus for measuring the resistivity of drilling mud in a borehole includes the sonde, and electronic circuitry for performing computed focusing and computing a signal representative of the resistivity Rm of the drilling mud on the basis of the computed focusing.

    摘要翻译: 测量通过陆地地层的钻孔中的钻井泥浆的电阻率的方法包括以下步骤:a)将探空仪插入钻孔中,探空仪具有细长体,其设有至少一个环形电流电极(A0,A'0 )和位于环形电流电极两侧的至少两个环形保护电极(A,A',A1,A'1,A2,A'2) b)执行计算聚焦以模拟其中至少一个电流I0从环形电流电极发射到周围地层中的工作模式,电流I0通过从两个环形电极发射两个电流I1和I'1而集中在地层中 位于环形电流电极两侧的保护电极; 以及c)从模拟操作模式产生表示钻井泥浆的电阻率Rm的信号。 用于测量钻孔中钻井泥浆的电阻率的装置包括:探头和用于执行计算聚焦的电子电路,以及基于所计算的聚焦计算代表钻井泥浆的电阻率Rm的信号。