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

IPC分类号： G01V3/18 ,  G06F15/00 ,  G01R35/00 ,  G01V3/28 ,  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.

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

IPC分类号： G01R35/00 ,  G06F15/00 ,  G21F3/00 ,  G01V3/18

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。