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公开(公告)号：US10371781B2
公开(公告)日：2019-08-06
申请号：US13695216
申请日：2011-04-27
申请人： Dean M. Homan , Emmanuel Legendre , Reza Taherian , Jean Seydoux , Eunmi Choi , Gerald N. Minerbo , Sergiy Kryukov , Robert C. Smith
发明人： Dean M. Homan , Emmanuel Legendre , Reza Taherian , Jean Seydoux , Eunmi Choi , Gerald N. Minerbo , Sergiy Kryukov , Robert C. Smith
摘要： A method to obtain gain-corrected measurements. A measurement tool having one or more arrays is provided, wherein the arrays include two co-located triaxial transmitters and two co-located triaxial receivers. Measurements are obtained using the transmitters and the receivers. Impedance matrices are formed from the obtained measurements and the impedance matrices are combined to provide gain-corrected measurements. The apparatus may alternatively be a while-drilling logging tool having one or more arrays, wherein each array comprises a transmitter, a receiver, and a buck, and wherein the signal received by the receiver is subtracted from the signal received by the buck or vice versa. A slotted shield may be incorporated into either embodiment of the tool. The slots may form one or more island elements. A material is disposed in the slots. The islands and shield body have complementary tapered sides that confine the islands within the shield body.
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公开(公告)号：US20130191028A1
公开(公告)日：2013-07-25
申请号：US13695216
申请日：2011-04-27
申请人： Dean M. Homan , Emmanuel Legendre , Reza Taherian , Jean Seydoux , Eunmi Choi , Gerald N. Minerbo , Sergiy Kryukov , Robert C. Smith
发明人： Dean M. Homan , Emmanuel Legendre , Reza Taherian , Jean Seydoux , Eunmi Choi , Gerald N. Minerbo , Sergiy Kryukov , Robert C. Smith
CPC分类号： G01R35/005 , G01V3/18 , G01V3/28 , G06F15/00 , G21F3/00
摘要： A method to obtain gain-corrected measurements. A measurement tool having one or more arrays is provided, wherein the arrays include two co-located triaxial transmitters and two co-located triaxial receivers. Measurements are obtained using the transmitters and the receivers. Impedance matrices are formed from the obtained measurements and the impedance matrices are combined to provide gain-corrected measurements. The apparatus may alternatively be a while-drilling logging tool having one or more arrays, wherein each array comprises a transmitter, a receiver, and a buck, and wherein the signal received by the receiver is subtracted from the signal received by the buck or vice versa. A slotted shield may be incorporated into either embodiment of the tool. The slots may form one or more island elements. A material is disposed in the slots. The islands and shield body have complementary tapered sides that confine the islands within the shield body.
摘要翻译： 获得增益校正测量的方法。 提供了具有一个或多个阵列的测量工具，其中阵列包括两个共同定位的三轴发射器和两个共同定位的三轴接收器。 使用发射机和接收机获得测量结果。 阻抗矩阵由所获得的测量形成，并且阻抗矩阵被组合以提供增益校正的测量。 该装置可替代地是具有一个或多个阵列的同时钻井测井工具，其中每个阵列包括发射器，接收器和降压器，并且其中由接收器接收的信号从由降压器或副部件接收的信号中减去 反之亦然。 开槽的护罩可以并入工具的任一实施例中。 槽可以形成一个或多个岛元件。 材料设置在槽中。 岛屿和盾体具有互补的锥形边，将岛屿限制在盾体内。
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23.发明授权公开(公告)号：US07812610B2
公开(公告)日：2010-10-12
申请号：US11550839
申请日：2006-10-19
CPC分类号： G01V3/26 , E21B47/02216
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07536261B2
公开(公告)日：2009-05-19
申请号：US11279739
申请日：2006-04-13
IPC分类号： G01V3/10
CPC分类号： E21B47/026 , G01V3/28
摘要： A method to determine a parameter of a subsurface formation such as anisotropy and dip comprises making at least two cross dipole measurements and forming an anti-symmetrized combination from the at least two cross dipole measurements.
摘要翻译： 确定地下地层诸如各向异性和浸渍的参数的方法包括进行至少两个交叉偶极子测量并从所述至少两个交叉偶极子测量形成抗对称结合。
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公开(公告)号：US07414391B2
公开(公告)日：2008-08-19
申请号：US10616710
申请日：2003-07-10
CPC分类号： G01V13/00
摘要： Techniques for calibrating an electromagnetic logging tool equipped with a plurality of antennas, with at least one antenna having its axis at an angle with respect to a tool axis, include disposing a test loop about the tool such that an axis of the tool and a plane on which the test loop lies form a tilt angle that is between about 0 and 90 degrees. An induced signal is measured at one of the antennas by energizing another of the antennas. Embodiments analyze the induced signal corresponding to a max or min extrema associated with a coupling effect due to the test loop. In other embodiments a corrected signal is compared with a calculated signal.
摘要翻译： 用于校准配备有多个天线的电磁测井工具的技术，其中至少一个天线具有相对于工具轴线成一定角度的轴线，包括设置围绕所述工具的测试环，使得所述工具的轴线和平面 测试环位于其上形成约0和90度之间的倾斜角。 通过对另一个天线通电来在一个天线处测量感应信号。 实施例分析由于测试环路而与耦合效应相关联的最大或最小极值对应的感应信号。 在其他实施例中，将校正信号与计算出的信号进行比较。
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公开(公告)号：US07026813B2
公开(公告)日：2006-04-11
申请号：US10605375
申请日：2003-09-25
CPC分类号： G01V3/28
摘要： A composite shell adapted to cover a source or sensor, particularly for subsurface applications. The shell provides transparency to the passage of signals to or from the source or sensor. The shell is adapted with a uniform semi-conductive surface providing a path for electric currents flowing within a subsurface borehole to short near the source or sensor.
摘要翻译： 适用于覆盖源或传感器的复合外壳，特别是用于地下应用。 外壳提供信号到源或传感器通过的透明度。 壳体适配于均匀的半导电表面，为在地下钻孔中流动的电流提供路径，以在源极或传感器附近短路。
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27.发明授权Method and system for determining formation anisotropic resistivity with reduced borehole effects from tilted or transverse magnetic dipoles 有权用倾斜或横向磁偶极子减小钻孔效应来确定地层各向异性电阻率的方法和系统公开(公告)号：US06556015B1
公开(公告)日：2003-04-29
申请号：US09975411
申请日：2001-10-11
申请人： Dzevat Omeragic , Gerald N. Minerbo
发明人： Dzevat Omeragic , Gerald N. Minerbo
IPC分类号： G01V326
CPC分类号： G01V3/28
摘要： Systems and methods are provided for determining subsurface formation properties using an antenna system disposed within a borehole traversing the formation. A logging system includes a well tool implemented with an antenna system having transverse or tilted magnetic dipoles. One antenna implementation uses a set of three coils having non-parallel axes. Through mechanical or electromagnetic rotation of an antenna about its axis in order to maximize or minimize couplings, the systems and methods are used to estimate formation anisotropic resistivity, providing reduced borehole effects in vertical and small deviation wells. This invention may also be applied in deviated wells when the borehole is perpendicular to the strike direction, as is often the case in wireline logging.
摘要翻译： 提供的系统和方法用于使用设置在穿过地层的钻孔内的天线系统来确定地下地层特性。 测井系统包括用具有横向或倾斜磁偶极子的天线系统实现的井具。 一个天线实现使用一组具有非平行轴的三个线圈。 通过围绕其轴线的天线机械或电磁旋转以使耦合最大化或最小化，系统和方法用于估计形成各向异性电阻率，在垂直和小偏差井中提供降低的井眼效应。 当钻孔垂直于冲击方向时，本发明也可以应用于偏斜井中，如在电缆测井中通常情况。
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28.发明授权公开(公告)号：US06509738B1
公开(公告)日：2003-01-21
申请号：US09617528
申请日：2000-07-14
IPC分类号： G01V328
CPC分类号： G01V3/28
摘要： An induction logging instrument is disclosed which includes at least one induction transmitter arranged as an axial magnetic dipole and at least one differential axial magnetic dipole receiver disposed at a selected axial distance from the at least one induction transmitter. In one embodiment, the receiver includes a pair of coils, each wound on an axis substantially parallel to an axis of the instrument. Each of the coil axes is displaced from the instrument axis by a substantially equal lateral distance in opposite directions. Each of the pair of coils is disposed at substantially the same axial position along the instrument, and the coils are interconnected in inverse series. In another embodiment, the receiver includes two pairs of coils, each wound on an axis substantially parallel to the axis of the instrument. Each of the coil axes in each pair is displaced from the instrument axis by a substantially equal lateral distance an in opposed directions. The pairs are substantially orthogonal to each other. Each of the coils is disposed at substantially the same axial position along the instrument, and the coils in each pair are connected to circuits adapted to determine a difference between signals induced in each of the coils.
摘要翻译： 公开了一种感应测井仪器，其包括布置为轴向磁偶极子的至少一个感应发射器和设置在距所述至少一个感应发射器所选轴向距离的至少一个差动轴向磁偶极子接收器。 在一个实施例中，接收器包括一对线圈，每个线圈绕基本上平行于仪器的轴线的轴线缠绕。 每个线圈轴在仪器轴线上以相反方向基本相等的横向距离移位。 一对线圈中的每一个被设置在沿着仪器的基本相同的轴向位置处，并且线圈以相反的顺序相互连接。 在另一个实施例中，接收器包括两对线圈，每对线圈缠绕在基本上平行于仪器轴线的轴上。 每对中的每个线圈轴线在仪器轴线上以相反的方向从基本相等的横向距离a移位。 这些对基本上彼此正交。 每个线圈沿着仪器设置在基本相同的轴向位置，并且每对线圈中的线圈连接到适于确定在每个线圈中感应的信号之间的差异的电路。
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