公开(公告)号：US10553927B2

公开(公告)日：2020-02-04

申请号：US13499739

申请日：2009-10-09

申请人： Luis E. San Martin ,  Evan L. Davies ,  Michael S. Bittar

发明人： Luis E. San Martin ,  Evan L. Davies ,  Michael S. Bittar

IPC分类号： H01F27/28 ,  H01Q1/04

摘要： A downhole tool including a transmitter coil assembly and a receiver coil assembly. The coil assembly includes at least one first coil having a first support member with a first single layer of wire wound therearound. The coil assembly further includes at least one second coil. The second coil includes a second support member having a second single layer of wire wound therearound. The first support member is disposed within the second support member, and the first single layer spaced apart from the second single wire by a distance of D.

公开(公告)号：US20140159731A1

公开(公告)日：2014-06-12

申请号：US14237674

申请日：2011-08-10

申请人： Evan L. Davies ,  Luis E. San Martin

发明人： Evan L. Davies ,  Luis E. San Martin

IPC分类号： G01V3/30

CPC分类号： G01V3/30 ,  G01V3/28

摘要： A logging tool and method for winding a multi-component induction (MCI) antenna is presented. The method eliminates unwanted dipole signals that are created by the voltage drop that takes place in the transmitter. The antenna is made of at least two parts physically separated, one on each side of the mandrel. The winding method is performed in a way that creates at least four windings arranged to eliminate dipole signals attributable to an asymmetric voltage distribution. The midpoint of the conductive wire that for is the antenna windings may be electrically attached to the tool body. This method is suitable for the winding of the cross-components X and Y of the MCI coil arrays.

摘要翻译： 提出了一种用于卷绕多分量感应（MCI）天线的测井工具和方法。 该方法消除了由发射器中发生的电压降产生的不需要的偶极子信号。 天线由物理分离的至少两个部分制成，一个在心轴的每一侧。 卷绕方法以产生至少四个绕组排列的方式进行，以消除归因于不对称电压分布的偶极子信号。 作为天线绕组的导线的中点可以电连接到工具主体。 该方法适用于MCI线圈阵列的交叉分量X和Y的绕组。

公开(公告)号：US07046112B2

公开(公告)日：2006-05-16

申请号：US10764781

申请日：2004-01-26

申请人： Evan L. Davies ,  Luis E. San Martin

发明人： Evan L. Davies ,  Luis E. San Martin

IPC分类号： H01F27/30

CPC分类号： H04B5/0075 ,  H01F5/02 ,  H01F27/325 ,  H01F41/098 ,  H01F2038/143 ,  H04B5/02

摘要： The present invention is directed to a logging tool induction coil form having a coating layer, which is easy to form to tight tolerances, bonded to at least a portion of the outer surface of the ceramic hollow cylindrical core. A plurality of parallel circumferential grooves are machined into the coating layer. Since the coating material is easy to machine, the parallel circumferential grooves can be machined to the tight tolerances needed in logging applications at a fraction of the time and cost of machining ceramic-only forms.

摘要翻译： 本发明涉及一种测井工具感应线圈形式，其具有易于形成为严格公差的涂层，其结合到陶瓷中空圆柱形芯的外表面的至少一部分上。 多个平行的圆周槽被加工到涂层中。 由于涂层材料容易加工，平行的周向槽可以在加工仅陶瓷形式的时间和成本的几分之一时间内加工成在测井应用中所需的严格公差。

公开(公告)号：US09568634B2

公开(公告)日：2017-02-14

申请号：US14237674

申请日：2011-08-10

申请人： Evan L. Davies ,  Luis E. San Martin

发明人： Evan L. Davies ,  Luis E. San Martin

IPC分类号： G01V3/30 ,  G01V3/28

CPC分类号： G01V3/30 ,  G01V3/28

摘要： A logging tool and method for winding a multi-component induction (MCI) antenna is presented. The method eliminates unwanted dipole signals that are created by the voltage drop that takes place in the transmitter. The antenna is made of at least two parts physically separated, one on each side of the mandrel. The winding method is performed in a way that creates at least four windings arranged to eliminate dipole signals attributable to an asymmetric voltage distribution. The midpoint of the conductive wire that for is the antenna windings may be electrically attached to the tool body. This method is suitable for the winding of the cross-components X and Y of the MCI coil arrays.

摘要翻译： 提出了一种用于卷绕多分量感应（MCI）天线的测井工具和方法。 该方法消除了由发射器中发生的电压降产生的不需要的偶极子信号。 天线由物理分离的至少两个部分制成，一个在心轴的每一侧。 卷绕方法以产生至少四个绕组排列的方式进行，以消除归因于不对称电压分布的偶极子信号。 作为天线绕组的导线的中点可以电连接到工具主体。 该方法适用于MCI线圈阵列的交叉分量X和Y的绕组。

公开(公告)号：US20100148788A1

公开(公告)日：2010-06-17

申请号：US12600501

申请日：2007-05-21

申请人： Luis E. San Martin ,  Evan L. Davies

发明人： Luis E. San Martin ,  Evan L. Davies

IPC分类号： G01V3/18

CPC分类号： G01V3/24

摘要： An apparatus and method for performing high transverse resolution voltage measurements in downhole logging tools utilized to determine the resistivity of an adjacent portion of a borehole wall Two current electrodes 508 and 509 are energized by an excitation source to create an oscillatory electric field in a borehole wall The voltage drop from each voltage electrode in a row of laterally spaced voltage electrodes 604 is measured relative to a shared voltage electrode 606 longitudinally spaced from the row of electrodes The differential voltage is used in combination with a measured current flow to determine a resistivity value for the borehole A second row of laterally spaced voltage electrodes 608 having electrodes laterally offset from the electrodes of the first row is included to provide high transverse resolution A common mode voltage at the shared voltage electrodes is measured and utilized to minimize the resistivity measurement error

摘要翻译： 用于在井下测井工具中执行高横向分辨率电压测量的装置和方法，用于确定井壁的相邻部分的电阻率。两个电流电极508和509由激发源激励以在井壁中产生振荡电场 相对于与电极行纵向间隔开的共用电压电极606测量在一排横向间隔开的电压电极604中的每个电压电极的电压降。差分电压与测量的电流结合使用以确定电阻率值 钻孔包括具有横向偏离第一排的电极的电极的横向间隔开的电压电极608的第二排以提供高横向分辨率在共享电压电极处的共模电压被测量并用于最小化电阻率测量误差

公开(公告)号：US07866407B2

公开(公告)日：2011-01-11

申请号：US11716998

申请日：2007-03-12

申请人： Luis E. San Martin ,  Evan L. Davies

发明人： Luis E. San Martin ,  Evan L. Davies

IPC分类号： E21B19/084 ,  H01B1/02

CPC分类号： H01B7/046 ,  H01B5/14

摘要： A device is provided, the device comprising a downhole tool comprising a wire comprising at least one strand comprising a low thermal expansion material. The low thermal expansion material may have a low electrical resistance material disposed thereon.

摘要翻译： 提供了一种装置，该装置包括井下工具，其包括包括至少一根包含低热膨胀材料的股线的线。 低热膨胀材料可以具有设置在其上的低电阻材料。

公开(公告)号：US07195075B2

公开(公告)日：2007-03-27

申请号：US10739550

申请日：2003-12-18

申请人： Luis E. San Martin ,  Evan L. Davies

发明人： Luis E. San Martin ,  Evan L. Davies

IPC分类号： E21B19/084 ,  H01B1/02

CPC分类号： H01B7/046 ,  H01B5/14

摘要： In some embodiments, a device includes a downhole tool comprising a wire comprising at least one strand comprising a low thermal expansion material. The low thermal expansion material may have a low electrical resistance material disposed thereon.

摘要翻译： 在一些实施例中，装置包括井下工具，其包括包括至少一根包含低热膨胀材料的股线的线。 低热膨胀材料可以具有设置在其上的低电阻材料。

公开(公告)号：US20120326825A1

公开(公告)日：2012-12-27

申请号：US13499739

申请日：2009-10-09

申请人： Luis E. San Martin ,  Evan L. Davies ,  Michael S. Bittar

发明人： Luis E. San Martin ,  Evan L. Davies ,  Michael S. Bittar

IPC分类号： H01F27/28

摘要： A downhole tool including a transmitter coil assembly and a receiver coil assembly. The coil assembly includes at least one first coil having a first support member with a first single layer of wire wound therearound. The coil assembly further includes at least one second coil. The second coil includes a second support member having a second single layer of wire wound therearound. The first support member is disposed within the second support member, and the first single layer spaced apart from the second single wire by a distance of D.

摘要翻译： 一种井下工具，包括发射器线圈组件和接收器线圈组件。 线圈组件包括至少一个具有第一支撑构件的第一线圈，该第一支撑构件具有缠绕在其上的第一单层线。 线圈组件还包括至少一个第二线圈。 第二线圈包括具有缠绕在其周围的第二单层线的第二支撑构件。 第一支撑构件设置在第二支撑构件内，并且第一单层与第二单线间隔开距离D.

公开(公告)号：US08299796B2

公开(公告)日：2012-10-30

申请号：US12600501

申请日：2007-05-21

申请人： Luis E. San Martin ,  Evan L. Davies

发明人： Luis E. San Martin ,  Evan L. Davies

IPC分类号： G01V3/00

CPC分类号： G01V3/24

摘要： An apparatus and method for performing high transverse resolution voltage measurements in downhole logging tools utilized to determine the resistivity of an adjacent portion of a borehole wall. Two current electrodes 508 and 509 are energized by an excitation source to create an oscillatory electric field in a borehole wall. The voltage drop from each voltage electrode in a row of laterally spaced voltage electrodes 604 is measured relative to a shared voltage electrode 606 longitudinally spaced from the row of electrodes. The differential voltage is used in combination with a measured current flow to determine a resistivity value for the borehole. A second row of laterally spaced voltage electrodes 608 having electrodes laterally offset from the electrodes of the first row is included to provide high transverse resolution. A common mode voltage at the shared voltage electrodes is measured and utilized to minimize the resistivity measurement error.

摘要翻译： 一种用于在井下测井工具中执行高横向分辨率电压测量的装置和方法，用于确定井眼壁的相邻部分的电阻率。 两个电流电极508和509由激励源激励以在井壁中产生振荡电场。 相对于与该行电极纵向间隔开的共用电压电极606测量来自一排横向间隔开的电压电极604中的每一个电压电极的电压降。 差分电压与测量的电流结合使用以确定井眼的电阻率值。 包括具有横向偏离第一行的电极的电极的第二排横向间隔开的电压电极608以提供高横向分辨率。 测量共享电压电极上的共模电压，并将其用于最小化电阻率测量误差。

公开(公告)号：US20150136387A1

公开(公告)日：2015-05-21

申请号：US14404096

申请日：2012-06-27

申请人： Evan L. Davies ,  Dustin R. Stubbs ,  David O. Torres

发明人： Evan L. Davies ,  Dustin R. Stubbs ,  David O. Torres

IPC分类号： E21B49/00 ,  E21B47/01 ,  E21B49/08 ,  G01V3/26

CPC分类号： E21B49/005 ,  E21B47/01 ,  E21B49/087 ,  G01V3/26 ,  G01V3/28 ,  Y02A90/342

摘要： A system and method for reducing borehole effects in a borehole within a subterranean formation is disclosed. The apparatus includes a fluid excluder, which includes a sleeve body and a sleeve opening defined by the sleeve body. The sleeve may be sized to fit around an induction tool. The sleeve body may include a fluid passageway therethrough, which may divert drilling fluids when the apparatus is deployed downhole. The apparatus may further include an electrode disposed within the fluid passageway for reducing the electrical current in the drilling fluid and thereby improve the readings obtained by logging devices.

摘要翻译： 公开了一种用于减少地层内钻孔的钻孔效应的系统和方法。 该装置包括一个流体排除器，它包括一个套管主体和一个由套管主体限定的套筒开口。 套筒的尺寸可以适合于感应工具周围。 套筒主体可以包括通过其的流体通道，当该装置在井下部署时，该主体可以转移钻井液。 该装置还可以包括设置在流体通道内的电极，用于减少钻井液中的电流，从而改善通过测井装置获得的读数。