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32 条记录 (耗时 0.027 秒)

    Drilling with casing
    1.
    发明授权
    Drilling with casing 有权
    用套管钻

    公开(公告)号：US07334649B2

    公开(公告)日：2008-02-26

    申请号：US11103186

    申请日：2005-04-11

    申请人： Chen-Kang D. Chen ,  M. Vikram Rao

    发明人： Chen-Kang D. Chen ,  M. Vikram Rao

    IPC分类号： E21B7/20

    CPC分类号： E21B7/067 ,  E21B7/20 ,  E21B10/26 ,  E21B17/08 ,  E21B17/1092

    摘要： A borehole may be drilled utilizing the bottom hole assembly 10, 50 with a downhole motor 14, 110, which may offset at a selected bend angle. A bend for directional drilling may be provided by a PDM, or by a RSD. A gauge section 36 secured to the pilot bit 18 has a uniform diameter bearing surface along an axial length of at least 60% of the pilot bit diameter. The bit or reamer 16 has a bit face defining the cutting diameter of the drilled hole. The axial spacing between the bend and the bit face is controlled to less than fifteen times the bit diameter. The downhole motor, pilot bit and bit may be retrieved from the well while leaving the casing string in the well.

    摘要翻译： 可以利用底孔组件10,50钻出钻孔，井下电机14,110可以以选定的弯曲角度偏移。 用于定向钻孔的弯曲可以由PDM或RSD提供。 固定到导向钻头18的标尺部分36沿着导向钻头直径的至少60％的轴向长度具有均匀的直径支承表面。 钻头或铰刀16具有限定钻孔的切割直径的钻头面。 弯头与钻头面之间的轴向间距被控制在钻头直径的十五倍以下。 井下电机，导向钻头和钻头可以从井中取出，同时将套管柱留在井中。

    Expanded liner system and method
    2.
    发明授权
    Expanded liner system and method 有权
    膨胀衬管系统和方法

    公开(公告)号：US07213643B2

    公开(公告)日：2007-05-08

    申请号：US10421135

    申请日：2003-04-23

    申请人： Chen-Kang D. Chen ,  Daniel D. Gleitman ,  M. Vikram Rao

    发明人： Chen-Kang D. Chen ,  Daniel D. Gleitman ,  M. Vikram Rao

    IPC分类号： E21B23/00 ,  E21B7/00

    CPC分类号： E21B7/20 ,  E21B7/067 ,  E21B7/068 ,  E21B10/26 ,  E21B43/103

    摘要： A borehole may be drilled utilizing the bottom hole assembly 10, 50 with a downhole motor 14, which may offset at a selected bend angle. A gauge section 34 is secured to the bit 16 has a uniform diameter bearing surface along an axial length of at least 60% of the bit diameter. The axial spacing between the bend and the bit face is controlled to less than fifteen times the bit diameter. After drilling a section of the well with the BHA according to the present invention, a tubular may be inserted in the well by passing the tubular through an upper tubular, then the inserted tubular expanded while downhole to a diameter substantially equal to the expanded tubular.

    摘要翻译： 可以利用底孔组件10,50钻出钻孔，井下电机14可以以选定的弯曲角度偏移。 标尺部分34被固定到钻头16上，沿钻头直径的至少60％的轴向长度具有均匀直径的支承表面。 弯头与钻头面之间的轴向间距被控制在钻头直径的十五倍以下。 在根据本发明的BHA钻井一段井后，可以通过使管通过上管而将管状物插入井中，然后将插入的管在井下扩展至基本上等于膨胀管的直径。

    Drilling with casing
    5.
    发明授权
    Drilling with casing 有权
    用套管钻

    公开(公告)号：US06877570B2

    公开(公告)日：2005-04-12

    申请号：US10320164

    申请日：2002-12-16

    申请人： Chen-Kang D. Chen ,  M. Vikram Rao

    发明人： Chen-Kang D. Chen ,  M. Vikram Rao

    IPC分类号： E21B7/06 ,  E21B7/20 ,  E21B10/26 ,  E21B17/08 ,  E21B17/10

    CPC分类号： E21B7/067 ,  E21B7/20 ,  E21B10/26 ,  E21B17/08 ,  E21B17/1092

    摘要： A borehole may be drilled utilizing the bottom hole assembly 10, 50 with a downhole motor 14, which may offset at a selected bend angle. The motor housing is preferably run slick, and a gauge section 36 secured to the pilot bit 18 has a uniform diameter bearing surface along an axial length of at least 60% of the pilot bit diameter. The bit or reamer 16 has a bit face defining the cutting diameter of the drilled hole. The axial spacing between the bend and the bit face is controlled to less than fifteen times the bit diameter. The downhole motor, pilot bit and bit may be retrieved from the well while leaving the casing string in the well.

    摘要翻译： 可以利用底孔组件10,50钻出钻孔，井下电机14可以以选定的弯曲角度偏移。 电动机壳体优选流动滑动，并且固定到导向钻头18的量规部分36沿着导向钻头直径的至少60％的轴向长度具有均匀的直径支承表面。 钻头或铰刀16具有限定钻孔的切割直径的钻头面。 弯头与钻头面之间的轴向间距被控制在钻头直径的十五倍以下。 井下电机，导向钻头和钻头可以从井中取出，同时将套管柱留在井中。

    Method and apparatus for detecting boundary stratum and adjusting the direction of drilling to maintain the drill string within a bed of interest
    6.
    发明授权
    Method and apparatus for detecting boundary stratum and adjusting the direction of drilling to maintain the drill string within a bed of interest 失效
    用于检测边界层并调整钻孔方向以将钻柱保持在感兴趣的床内的方法和装置

    公开(公告)号：US5495174A

    公开(公告)日：1996-02-27

    申请号：US113969

    申请日：1993-08-30

    申请人： M. Vikram Rao ,  Paul F. Rodney

    发明人： M. Vikram Rao ,  Paul F. Rodney

    IPC分类号： E21B7/04 ,  E21B47/02 ,  G01V3/18 ,  G01V3/30 ,  G01V3/20

    CPC分类号： E21B47/02 ,  E21B7/046 ,  G01V3/18

    摘要： Methods and apparatus for detecting the approach of a boundary stratum while drilling in a substantially horizontal subsurface zone using sensor tools having sensors with different depths of investigation. The two depths of investigation signals are used to reduce spurious signals. In some cases, dips or angles of the boundary strat with the borehole may be determined. In alternative embodiments, one or more electromagnetic energy transmitters are used with a single receiver pair to generate a characteristic signature of approaching boundary stratum.

    摘要翻译： 用于使用具有不同深度调查的传感器的传感器工具在基本水平的地下区域中钻探时检测边界层的接近的方法和装置。 调查信号的两个深度用于减少杂散信号。 在某些情况下，可以确定边界与钻孔的倾角或角度。 在替代实施例中，一个或多个电磁能量发射器与单个接收器对一起使用以产生接近边界层的特征签名。

    Method and system for the early detection of the jamming of a core sampling device in an earth borehole, and for taking remedial action responsive thereto
    9.
    发明授权
    Method and system for the early detection of the jamming of a core sampling device in an earth borehole, and for taking remedial action responsive thereto 失效
    用于早期检测地球钻孔中的核心采样装置的干扰的方法和系统，以及对其采取补救措施

    公开(公告)号：US5417295A

    公开(公告)日：1995-05-23

    申请号：US78702

    申请日：1993-06-16

    申请人： M. Vikram Rao ,  Bobby T. Wilson ,  Laban M. Marsh

    发明人： M. Vikram Rao ,  Bobby T. Wilson ,  Laban M. Marsh

    IPC分类号： E21B21/08 ,  E21B25/00 ,  E21B47/09

    CPC分类号： E21B21/08 ,  E21B25/00

    摘要： A drill string having a core sampling device at its lower end is suspended in an earth borehole by a rotary drilling rig at the earth's surface. Drilling fluid pulsations are monitored in the drilling fluid standpipe to generate characteristic signatures of normal coring operations and a precursor, abnormal, signature when the core sampling device first begins to jam, before catastrophic jamming has occurred. Responsive to the abnormal signature, remedial action is commenced, such as reducing WOB, RPM, or terminating the coring operation. The system is also used to determine that an activatable downhole tool has one or more of its parts moved from a first position to a second position.

    摘要翻译： 在其下端具有芯取样装置的钻柱由地球表面的旋转钻机悬挂在地球钻孔中。 在钻井液立管中监测钻井液脉动，以在发生灾难性堵塞之前，当核心取样装置首次开始堵塞时，产生正常取芯操作和前体异常特征的特征。 响应于异常签名，开始采取补救措施，如减少WOB，RPM或终止取芯操作。 该系统还用于确定可激活的井下工​​具的一个或多个部件从第一位置移动到第二位置。

    Nonconducting thread lubricant
    10.
    发明授权
    Nonconducting thread lubricant 失效
    不导电螺纹润滑剂

    公开(公告)号：US4613443A

    公开(公告)日：1986-09-23

    申请号：US625381

    申请日：1984-06-28

    申请人： M. Vikram Rao ,  Manmohan S. Kalsi ,  Patricio D. Alvarez

    发明人： M. Vikram Rao ,  Manmohan S. Kalsi ,  Patricio D. Alvarez

    IPC分类号： C10M171/00 ,  C10M131/04 ,  C10M141/00

    CPC分类号： C10M171/00

    摘要： A nonconducting pipe thread lubricating composition for use in a drill string capable of transmitting electrical signals from a downhole location to the surface of the earth. The composition includes hard and soft moderately deforming materials such as polyphenylene sulfide and talc, and a lubricating solid such as polytetrafluoroethylene dispersed in a viscous lubricating base preferably a lithium based grease.

    摘要翻译： 一种用于钻柱的不导电管螺纹润滑组合物，其能够将电信号从井下位置传递到地球表面。 该组合物包括硬质和柔软的中等变形材料如聚苯硫醚和滑石，以及润滑固体如聚四氟乙烯分散在粘性润滑基料中，优选为锂基润滑脂。