公开(公告)号：US07716978B2

公开(公告)日：2010-05-18

申请号：US11924940

申请日：2007-10-26

Applicant: Borislav J. Tchakarov ,  Peter W. Reittinger ,  Francisco Galvan-Sanchez

Inventor： Borislav J. Tchakarov ,  Peter W. Reittinger ,  Francisco Galvan-Sanchez

IPC: E21B47/00 ,  G01V3/18

CPC classification number: G01V3/20

Abstract: In a method and apparatus for estimating a downhole fluid parameter include a body having an elongated cavity defined by an electrically conductive inner surface, an central electrical conductor located coaxially within the cavity, wherein an annular region is defined by the cavity inner surface and an outer surface of the electrical conductor. A fluid is conveyed to the annular region. A first electrode is coupled to the central electrode, a second electrode coupled to the central electrode, and at least one intermediate electrode coupled to the central electrode between the first electrode and the second electrode. An input signal is applied to the central electrode and first and second output signals are emitted from the second electrode intermediate electrode. The output signals are used in part to estimate the fluid property of the fluid existing in the annular region.

Abstract translation: 在用于估计井下流体参数的方法和装置中包括具有由导电内表面限定的细长空腔的主体，同轴地位于空腔内的中心电导体，其中环形区域由空腔内表面和外部空间 电导体表面。 将流体输送到环形区域。 第一电极耦合到中心电极，耦合到中心电极的第二电极和耦合到第一电极和第二电极之间的中心电极的至少一个中间电极。 输入信号施加到中心电极，第一和第二输出信号从第二电极中间电极发射。 输出信号被部分地用于估计存在于环形区域中的流体的流体特性。

公开(公告)号：US20080078582A1

公开(公告)日：2008-04-03

申请号：US11601403

申请日：2006-11-17

Applicant: Quan V. Phan ,  Borislav J. Tchakarov

Inventor： Quan V. Phan ,  Borislav J. Tchakarov

IPC: E21B49/00

CPC classification number: E21B49/10 ,  E21B49/06

Abstract: A coring device includes a primary and a secondary bit that drill a first and second depth into a formation, respectively. The first and second bits are positioned on telescopically arranged mandrels that are rotated by a suitable rotary drive. The coring tool also includes a drive device that extends the first bit and the second bit a first depth into the formation and extends only the second bit a second depth into the formation. In arrangements, the actuating device can include a first hydraulic actuator applying pressure to extend the second bit into the formation and a second hydraulic actuator applying pressure to retract the second bit from the formation. The advancement and retraction of the first and second bits can be controlled by a control unit that uses sensor signals, timers, preprogrammed instruction and any other suitable arrangement.

Abstract translation: 取芯装置包括分别将第一和第二深度钻入地层的初级和次级钻头。 第一和第二位被定位在由适当的旋转驱动器旋转的可伸缩布置的心轴上。 取芯工具还包括驱动装置，该驱动装置将第一钻头和第二钻头的第一深度延伸到地层中，并且仅将第二钻头仅延伸到地层中的第二深度。 在布置中，致动装置可以包括施加压力以将第二钻头延伸到地层中的第一液压致动器和施加压力以将第二钻头从地层缩回的第二液压致动器。 可以通过使用传感器信号，定时器，预编程指令和任何其他合适布置的控制单元来控制第一和第二位的前进和后退。

公开(公告)号：US5348091A

公开(公告)日：1994-09-20

申请号：US107092

申请日：1993-08-16

Applicant: Borislav J. Tchakarov ,  Leon Earl

Inventor： Borislav J. Tchakarov ,  Leon Earl

IPC: E21B17/10 ,  E21B47/01

CPC classification number: E21B17/1021 ,  E21B47/01

Abstract: An oil-field tool for use in combination with a MWD tool, for deployment and retrieval of a MWD tool through a drill string, and, for rigid continuously self-adjusting, centralization of the MWD tool during drilling, includes: housing having a tapering nose; slidable shaft having a flared portion; extendable fingers pivotably attached to the slidable shaft; means for releasable attachment to a workstring; and, means for attachment to a MWD tool.Typically, the housing of the invention is attached to a MWD tool while at the surface and the combined apparatus is lowered through the drill string by wireline releasably attached to the slidable shaft. During lowering, the weight of the housing and MWD tool extends the slidable shaft, positioning the extendable fingers above the tapering nose of the housing, thereby retracting the fingers. When the MWD tool lodges downhole, the slidable shaft moves downward, causing the fingers to override the tapering nose of the housing and extend the fingers outward against the drill pipe. During drilling operations mud flowing through the drill pipe acts downwardly on flared portion of the slidable shaft inducing more forceable extension of the fingers against the drill pipe, maintaining rigid centralization of the MWD. Retrieval of the MWD is typically had by interrupting mud flow and lifting of the self-adjusting centralizer through the drill string by wireline.

Abstract translation: 一种与MWD工具结合使用的油田工具，用于通过钻柱部署和回收MWD工具，并且用于刚度连续自调节MWD工具在钻井期间的集中，包括：具有锥形的壳体 鼻子; 具有扩口部的滑动轴; 可枢转地附接到可滑动轴的可伸缩指状物; 用于可释放地连接到工作绳的装置; 和用于连接到MWD工具的装置。 通常，本发明的壳体在表面处附接到MWD工具，并且组合的装置通过可释放地附接到可滑动轴的线缆通过钻柱下降。 在下降期间，壳体和MWD工具的重量将可滑动轴延伸，将可伸展的手指定位在壳体的锥形鼻部上方，从而缩回手指。 当MWD工具埋在井下时，滑动轴向下运动，使手指超过壳体的锥形鼻部，并将手指向外延伸穿过钻杆。 在钻井操作期间，流过钻杆的泥浆向下滑动可滑动轴的扩口部分，从而引起手指抵靠钻杆的更强力的延伸，保持MWD的刚性集中。 MWD的检测通常是通过中断泥浆流动和通过钻绳通过钻绳提升自调节扶正器来实现的。

公开(公告)号：US07649357B2

公开(公告)日：2010-01-19

申请号：US11417418

申请日：2006-05-04

Applicant: James C. Hunziker ,  Borislav J. Tchakarov

Inventor： James C. Hunziker ,  Borislav J. Tchakarov

IPC: G01V3/18 ,  E21B17/00

CPC classification number: E21B47/011

Abstract: A connector for a downhole tool includes a body with one or more conductors positioned at least partially axially adjacent to an axial bore that extends at least partially through the body. In embodiments, one or more seals surrounding the body prevent fluid from flowing from a lateral opening into the interior of the downhole tool. Additionally, the body of the connector can include a circumferential or annular recess that acts as a reservoir to contain or capture fluid that might otherwise enter the sub. Leak protection can also be protected by applying a pressure compensating material around the body.

Abstract translation: 用于井下工具的连接器包括具有一个或多个导体的主体，所述一个或多个导体至少部分地轴向地邻近至少部分地穿过主体的轴向孔。 在实施例中，围绕主体的一个或多个密封件防止流体从侧向开口流入井下工具的内部。 另外，连接器的主体可以包括圆周或环形凹槽，其作为储存器以容纳或捕获否则可能进入子流体的流体。 泄漏保护也可以通过在身体周围施加压力补偿材料来保护。

公开(公告)号：US06903553B2

公开(公告)日：2005-06-07

申请号：US10388871

申请日：2003-03-14

Applicant: Gregory Itskovich ,  Alexander Bespalov ,  Borislav J. Tchakarov

Inventor： Gregory Itskovich ,  Alexander Bespalov ,  Borislav J. Tchakarov

IPC: G01V3/28 ,  G01V3/10

CPC classification number: G01V3/28

Abstract: The present invention provides a method and apparatus for performing resistivity measurements for the purpose of geo-steering with 180-degree azimuth resolution. All the measurements represent a complementary set of data acquired in two operational modes. The directional mode providing sensitivity of the received signals to the azimuth characteristics of the formation. The deep mode provides a large depth of investigation for resistivity determination and bed boundary detection. The directional mode can be implemented using one receiving coil placed in between quadruple type transmitter. The deep mode represents either array induction measurements or multiple propagation resisitivity (MPR) measurements that provide high depth of investigation for resistivity determination and bed boundary detection.

公开(公告)号：US5836388A

公开(公告)日：1998-11-17

申请号：US893330

申请日：1997-07-16

Applicant: Borislav J. Tchakarov

Inventor： Borislav J. Tchakarov

IPC: E21B17/02 ,  E21B17/20

CPC classification number: E21B17/206 ,  E21B17/02

Abstract: A downhole measurement tool is lowered into a well through a drill pipe. The tool has at least two modules which are joined by a flexible linkage. The linkage has two subs, each of which has an electrical connector for the modules. Each sub has a hub that is threaded. A threaded retainer nut retains each connector. Each nut has a hub that is threaded and is smaller in diameter than the sub hub. A coiled inner spring threadingly engages each nut hub. A coiled outer spring surrounds and threadingly engages each sub hub. The outer spring surrounds the inner spring and is wound in an opposite direction of the inner spring. The springs are embedded within an elastomeric member. The inner spring is dimensioned such that, for a selected lateral bend prior to installation with the outer spring, the inner spring will twist a selected angle in a first twist direction. Similarly, the outer spring is dimensioned such that for the selected lateral bend, prior to installation with the inner spring, the outer spring will twist substantially the same as the selected angle, but in a direction opposite to the first twist direction so as to cancel any twist between the subs once installed and subjected to a lateral bend. When the tool encounters a curved portion of the well, the inner spring, outer spring and elastomeric member flex to improve the navigability of the tool through the curved portion.

Abstract translation: 井下测量工具通过钻杆下沉到井中。 该工具具有至少两个通过柔性连杆连接的模块。 连杆具有两个接头，每个接头具有用于模块的电连接器。 每个子都有一个线程的集线器。 螺纹保持螺母保持每个连接器。 每个螺母具有螺纹并且直径小于副轮毂的轮毂。 线圈内弹簧与每个螺母毂螺纹接合。 卷绕的外弹簧围绕并螺纹地接合每个子轮毂。 外弹簧围绕内弹簧并沿与内弹簧相反的方向缠绕。 弹簧嵌入弹性构件内。 内部弹簧的尺寸使得对于在与外部弹簧的安装之前的所选择的横向弯曲，内部弹簧将在第一扭转方向上扭转所选择的角度。 类似地，外部弹簧的尺寸使得对于所选择的横向弯曲，在安装内部弹簧之前，外部弹簧将基本上与所选择的角度相同，但是沿与第一扭转方向相反的方向扭转，以便取消 一旦安装并且经受横向弯曲之后的任何扭曲。 当工具遇到井的弯曲部分时，内弹簧，外弹簧和弹性体构件弯曲以改善工具通过弯曲部分的导航性。

公开(公告)号：US08141419B2

公开(公告)日：2012-03-27

申请号：US12323128

申请日：2008-11-25

Applicant: Borislav J. Tchakarov ,  Mohammed Azeemuddin ,  See H. Ong

Inventor： Borislav J. Tchakarov ,  Mohammed Azeemuddin ,  See H. Ong

IPC: E21B49/02 ,  G01N33/24

CPC classification number: E21B49/006

Abstract: Estimating formation properties includes a member coupled to a carrier, the member having a distal end that engages a borehole wall location, the distal end having a curved surface having a radius of curvature in at least one dimension about equal to or greater than a borehole radius. A drive device extends the first extendable member with a force sufficient to determine formation strength, and at least one measurement device providing an output signal indicative of the formation property. Articulating couplings may be used to change an angle of extension of the extendable member.

Abstract translation: 估计地层特性包括联接到载体的构件，所述构件具有接合钻孔壁位置的远端，所述远端具有弯曲表面，曲面半径在至少一个尺寸上等于或大于钻孔半径 。 驱动装置用足以确定地层强度的力来延伸第一可延伸构件，以及至少一个测量装置，其提供指示地层特性的输出信号。 可以使用铰接联接器来改变可延伸构件的延伸角度。

公开(公告)号：US20100051347A1

公开(公告)日：2010-03-04

申请号：US12323187

申请日：2008-11-25

Applicant: Borislav J. Tchakarov ,  James C. Hunziker ,  Quan V. Phan ,  Mohammed Azeemuddin ,  See H. Ong

Inventor： Borislav J. Tchakarov ,  James C. Hunziker ,  Quan V. Phan ,  Mohammed Azeemuddin ,  See H. Ong

IPC: E21B49/00 ,  E21B47/00 ,  E21B49/02

CPC classification number: E21B49/06 ,  E21B49/006

Abstract: A method and apparatus for estimating one or more formation properties using in-situ measurements conducted at or near a coring location include a coring tool adapted to cut a core sample in a formation, a member having a distal end that engages a borehole wall substantially adjacent the core sample, and a drive device that engages the member to the borehole wall with a force sufficient to estimate formation strength.

Abstract translation: 用于使用在取芯位置处或其附近进行的原位测量来估计一个或多个地层特性的方法和设备包括适于在地层中切割芯样品的取芯工具，具有远端的构件，所述远端接合基本相邻的钻孔壁 核心样品和驱动装置，其以足以估计地层强度的力将该构件接合到井壁。

公开(公告)号：US20090133486A1

公开(公告)日：2009-05-28

申请号：US12323128

申请日：2008-11-25

Applicant: Borislav J. Tchakarov ,  Mohammed Azeemuddin ,  See H. Ong

Inventor： Borislav J. Tchakarov ,  Mohammed Azeemuddin ,  See H. Ong

IPC: E21B49/00

CPC classification number: E21B49/006

Abstract: Estimating formation properties includes a member coupled to a carrier, the member having a distal end that engages a borehole wall location, the distal end having a curved surface having a radius of curvature in at least one dimension about equal to or greater than a borehole radius. A drive device extends the first extendable member with a force sufficient to determine formation strength, and at least one measurement device providing an output signal indicative of the formation property. Articulating couplings may be used to change an angle of extension of the extendable member.

Abstract translation: 估计地层特性包括联接到载体的构件，所述构件具有接合钻孔壁位置的远端，所述远端具有弯曲表面，曲面半径在至少一个尺寸上等于或大于钻孔半径 。 驱动装置用足以确定地层强度的力来延伸第一可延伸构件，以及至少一个测量装置，其提供指示地层特性的输出信号。 可以使用铰接联接器来改变可延伸构件的延伸角度。

公开(公告)号：US20090107666A1

公开(公告)日：2009-04-30

申请号：US11924940

申请日：2007-10-26

Applicant: Borislav J. Tchakarov ,  Peter W. Reittinger ,  Francisco Galvan-Sanchez

Inventor： Borislav J. Tchakarov ,  Peter W. Reittinger ,  Francisco Galvan-Sanchez

IPC: E21B47/12

CPC classification number: G01V3/20

Abstract: In a method and apparatus for estimating a downhole fluid parameter include a body having an elongated cavity defined by an electrically conductive inner surface, an central electrical conductor located coaxially within the cavity, wherein an annular region is defined by the cavity inner surface and an outer surface of the electrical conductor. A fluid is conveyed to the annular region. A first electrode is coupled to the central electrode, a second electrode coupled to the central electrode, and at least one intermediate electrode coupled to the central electrode between the first electrode and the second electrode. An input signal is applied to the central electrode and first and second output signals are emitted from the second electrode intermediate electrode. The output signals are used in part to estimate the fluid property of the fluid existing in the annular region.

Abstract translation: 在用于估计井下流体参数的方法和装置中包括具有由导电内表面限定的细长空腔的主体，同轴地位于空腔内的中心电导体，其中环形区域由空腔内表面和外部空间 电导体表面。 流体被传送到环形区域。 第一电极耦合到中心电极，耦合到中心电极的第二电极和耦合到第一电极和第二电极之间的中心电极的至少一个中间电极。 输入信号施加到中心电极，第一和第二输出信号从第二电极中间电极发射。 输出信号被部分地用于估计存在于环形区域中的流体的流体特性。