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    DISCRETE ELEMENT MODELING OF ROCK DESTRUCTION UNDER HIGH PRESSURE CONDITIONS
    1.
    发明专利
    DISCRETE ELEMENT MODELING OF ROCK DESTRUCTION UNDER HIGH PRESSURE CONDITIONS 未知

    公开(公告)号：CA2670181C

    公开(公告)日：2013-03-19

    申请号：CA2670181

    申请日：2007-11-29

    Applicant: BAKER HUGHES INC

    Inventor： LEDGERWOOD LEROY W

    IPC: E21B10/567 ,  E21B41/00

    Abstract: Discrete Element Modeling (DEM) of rock subject to high confining pressures, such as in a subterranean drilling environment, may be used to predict performance of cutting structures used in drill bits and other drilling tools, as well as of the tools themselves. DEM may also be used to create "virtual" rock exhibiting specific drillability characteristics with or without specific reference to any actual rock, for purposes of assessing cutting efficiency of various cutting structure configurations and orientations, as well as of drilling tools incorporating same.

    MULTI-CHAMFER CUTTING ELEMENTS HAVING A SHAPED CUTTING FACE, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS
    2.
    发明专利
    MULTI-CHAMFER CUTTING ELEMENTS HAVING A SHAPED CUTTING FACE, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS 未知

    公开(公告)号：CA2960640A1

    公开(公告)日：2016-03-17

    申请号：CA2960640

    申请日：2015-09-08

    Applicant: BAKER HUGHES INC

    Inventor： PATEL SURESH ,  STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A ,  SCOTT DANNY E ,  LEDGERWOOD LEROY W

    IPC: E21B10/42 ,  E21B10/43

    Abstract: A cutting element for an earth-boring tool includes a substrate and volume of superabrasive material positioned on the substrate. The volume of superabrasive material includes a cutting face having at least one recess extending into the volume of superabrasive material and/or at least one protrusion extending outward from the volume of superabrasive material. The volume of superabrasive material includes a first chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the first chamfer surface is located proximate a cutting edge of the volume of superabrasive material. A radial width of the first chamfer surface is between about 0.002 inch and about 0.045 inch. The volume of superabrasive material also includes a second chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the second chamfer surface is located adjacent the radially innermost edge of the first chamfer surface.

    DETRITUS FLOW MANAGEMENT FEATURES FOR DRAG BIT CUTTERS AND BITS SO EQUIPPED
    4.
    发明申请
    DETRITUS FLOW MANAGEMENT FEATURES FOR DRAG BIT CUTTERS AND BITS SO EQUIPPED 审中-公开
    DETRITUS流程管理功能用于拖拽切刀和装备

    公开(公告)号：WO2008066889B1

    公开(公告)日：2008-07-24

    申请号：PCT/US2007024574

    申请日：2007-11-29

    Applicant: BAKER HUGHES INC ,  LEDGERWOOD LEROY W

    Inventor： LEDGERWOOD LEROY W

    IPC: E21B10/54 ,  E21B10/573

    CPC classification number: E21B10/573 ,  E21B10/54

    Abstract: Rock detritus created by a drag bit cutter shearing subterranean formation material may flow under the cutter and attach itself to the side surface of the cutter barrel by differential pressure-induced sticking, and dilate. This attached material, confined by hydrostatic pressure, can create and strengthen a barrier between the cutter and the virgin rock being cut. The detritus barrier absorbs bit weight and reduces cutter efficiency by impairing contact of the cutter with the virgin rock formation. Increasing the friction between the rock detritus and the side surface of the cutter barrel for example by means of grooves or bars (140A) inhibits detritus flow, reduces build up, and allows hydrostatic pressure to contribute to, rather than inhibit, the cutting process. Similar beneficial results may be obtained when hydrostatic pressure drilling fluid is permitted to communicate through holes in the side surface of the cutter, or through an otherwise permeable side surface alleviating detritus sticking due to differential pressure effects.

    Abstract translation: 由刮刀剪切地层形成材料产生的岩屑可能在切割器下方流动，并且通过压差引起的粘附将其本身附着到切割器筒的侧表面，并扩张。 这种附着的材料受静水压力的限制，可以在切割器和被切割的原始岩石之间形成并加强一道屏障。 碎屑阻挡层通过削弱切割器与原始岩层的接触来吸收钻头重量并降低切割器效率。 例如通过凹槽或杆（140A）增加岩石碎屑与切割器筒的侧表面之间的摩擦抑制碎屑流动，减少积聚，并允许静水压力有助于切割过程而不是抑制切割过程。 当允许流体静压钻井流体通过切割器侧表面中的孔或通过另外可渗透的侧表面缓解由于压差效应引起的碎屑粘附时，可以获得类似的有益结果。

    A METHOD AND APPARATUS FOR COLLECTING FLUID SAMPLES DOWNHOLE
    5.
    发明申请
    A METHOD AND APPARATUS FOR COLLECTING FLUID SAMPLES DOWNHOLE 审中-公开
    一种用于收集流体样品池的方法和装置

    公开(公告)号：WO2007145841A2

    公开(公告)日：2007-12-21

    申请号：PCT/US2007012853

    申请日：2007-05-31

    Applicant: BAKER HUGHES INC

    Inventor： DIFOGGIO ROCCO ,  LEDGERWOOD LEROY W

    IPC: E21B49/08

    CPC classification number: E21B49/08 ,  E21B49/10

    Abstract: In one embodiment an apparatus is disclosed that includes a tool in a wellbore. A probe is extendable from the tool to contact a wall of a formation surrounding the wellbore. A tube substantially surrounds the probe wherein the tube is extendable into the formation surrounding the wellbore. In another embodiment a method for reducing contamination of a sample of a formation fluid is disclosed that includes extending a probe to contact a wall of a formation. A barrier tube that substantially surrounds the probe is extended into the formation thereby restricting a flow of a contaminated reservoir fluid that would otherwise come from near-wellbore regions above and below the probe from going toward the probe.

    Abstract translation: 在一个实施例中，公开了一种在井眼中包括工具的装置。 探头可从工具延伸以接触围绕井眼的地层的壁。 管基本上围绕探针，其中管可延伸到围绕井眼的地层中。 在另一个实施方案中，公开了一种减少地层流体样品污染的方法，其包括使探针延伸以接触地层的壁。 基本上围绕探针的阻挡管延伸到地层中，从而限制污染的储存器流体的流动，否则污染的储存器流体将来自探针上方和下方的近井筒区域，以朝向探针。

    DISCRETE ELEMENT MODELING OF ROCK DESTRUCTION UNDER HIGH PRESSURE CONDITIONS
    6.
    发明申请
    DISCRETE ELEMENT MODELING OF ROCK DESTRUCTION UNDER HIGH PRESSURE CONDITIONS 审中-公开
    高压条件下岩石破坏的离散元素建模

    公开(公告)号：WO2008066895A3

    公开(公告)日：2011-01-20

    申请号：PCT/US2007024596

    申请日：2007-11-29

    Applicant: BAKER HUGHES INC ,  LEDGERWOOD LEROY W

    Inventor： LEDGERWOOD LEROY W

    IPC: E21B10/00 ,  E21B49/00

    CPC classification number: E21B10/00 ,  E21B10/08 ,  E21B10/55 ,  E21B49/00

    Abstract: Discrete Element Modeling (DEM) of rock subject to high confining pressures, such as in a subterranean drilling environment, may be used to predict performance of cutting structures used in drill bits and other drilling tools, as well as of the tools themselves. DEM may also be used to create 'virtual' rock exhibiting specific drillability characteristics with or without specific reference to any actual rock, for purposes of assessing cutting efficiency of various cutting structure configurations and orientations, as well as of drilling tools incorporating same.

    Abstract translation: 受到高围压的岩石的离散元素建模（DEM），例如在地下钻井环境中，可用于预测钻头和其他钻孔工具以及工具本身中使用的切割结构的性能。 为了评估各种切割结构配置和方向的切割效率以及结合其的钻孔工具的目的，也可以使用DEM来创建具有或不具体参考任何实际岩石的特定可钻性特征的“虚拟”岩石。

    MULTI-CHAMFER CUTTING ELEMENTS HAVING A SHAPED CUTTING FACE, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS
    7.
    发明专利
    MULTI-CHAMFER CUTTING ELEMENTS HAVING A SHAPED CUTTING FACE, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS 未知

    公开(公告)号：CA2960640C

    公开(公告)日：2019-06-04

    申请号：CA2960640

    申请日：2015-09-08

    Applicant: BAKER HUGHES INC

    Inventor： PATEL SURESH ,  STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A ,  SCOTT DANNY E ,  LEDGERWOOD LEROY W

    IPC: E21B10/42 ,  E21B10/43

    Abstract: A cutting element for an earth-boring tool includes a substrate and volume of superabrasive material positioned on the substrate. The volume of superabrasive material includes a cutting face having at least one recess extending into the volume of superabrasive material and/or at least one protrusion extending outward from the volume of superabrasive material. The volume of superabrasive material includes a first chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the first chamfer surface is located proximate a cutting edge of the volume of superabrasive material. A radial width of the first chamfer surface is between about 0.002 inch and about 0.045 inch. The volume of superabrasive material also includes a second chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the second chamfer surface is located adjacent the radially innermost edge of the first chamfer surface.

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