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    • 2. 发明申请
    • JET ARRANGEMENT ON AN EXPANDABLE DOWNHOLE TOOL
    • 喷射装置在可膨胀的下车工具上
    • US20120298423A1
    • 2012-11-29
    • US13116777
    • 2011-05-26
    • Brian CruickshankManoj MahajanNavish MakkarSameer BhoiteCharles Dewey
    • Brian CruickshankManoj MahajanNavish MakkarSameer BhoiteCharles Dewey
    • E21B7/28E21B10/32
    • E21B10/322E21B10/60E21B17/1078
    • Various embodiments of an expandable downhole tool for use in drilling of a wellbore are disclosed. The expandable tools disclosed herein may be used as an underreamer to enlarge a borehole, or may be used to stabilize a drilling system in a previously underreamed borehole or in a borehole that is being underreamed while drilling progresses. The various embodiments of the expandable tools disclosed herein have a higher hydraulic capacity than prior art underreamers. An increase in hydraulic energy delivered to the cutting structures may advantageously improve the rate of removal of cuttings from the cutting structures (improved cuttings evacuation), may decrease cutter element wear, and may prevent damage or premature failure. Improved cuttings evacuation may also provide for improved cutting action and increased penetration rates.
    • 公开了用于钻井中的可扩展井下工具的各种实施例。 本文公开的可膨胀工具可以用作扩孔器的扩孔器,或者可以用于稳定钻井系统在预先钻进的钻孔中或在钻孔进行时正在被加热的钻孔中。 本文公开的可膨胀工具的各种实施例具有比现有技术的扩孔器更高的液压能力。 输送到切割结构的液压能量的增加可以有利地提高切割结构的切割速度(改进的切屑排出),可以减少切割器元件磨损,并且可以防止损坏或过早失效。 改进的切屑撤离也可以提供改进的切割作用和增加的渗透速率。
    • 5. 发明申请
    • APPARATUSES AND METHODS FOR STABILIZING DOWNHOLE TOOLS
    • 用于稳定井下工具的装置和方法
    • US20130146361A1
    • 2013-06-13
    • US13324265
    • 2011-12-13
    • Navish MakkarBrian CruickshankCharles DeweyMichael G. Azar
    • Navish MakkarBrian CruickshankCharles DeweyMichael G. Azar
    • E21B7/00E21B10/32
    • E21B10/32E21B7/28E21B10/322E21B17/1078
    • A secondary cutting structure for use in a drilling assembly includes a tubular body, and a block, extendable from the tubular body, the block including a first arrangement of cutting elements disposed on a first blade, a first stabilization section disposed proximate the first arrangement of cutting elements, a second arrangement of cutting elements disposed on the first blade, and a second stabilization section disposed proximate the second arrangement of cutting elements. A method of drilling includes disposing a drilling assembly in a wellbore, the drilling assembly including a secondary cutting structure having a tubular body and a block, extendable from the body, the block including at least three blades, actuating the secondary cutting structure, wherein the actuating includes extending the block from the tubular body, and drilling formation with the extended block
    • 用于钻井组件的二次切割结构包括管状主体和可从管状体延伸的块,该块包括设置在第一叶片上的切割元件的第一布置,第一稳定部分, 切割元件,设置在第一刀片上的切割元件的第二布置,以及靠近第二切割元件布置设置的第二稳定部。 一种钻井方法包括将钻井组件设置在井眼中,钻井组件包括具有管状主体和块的辅助切割结构,该主体可从本体延伸,该块包括至少三个叶片,致动第二切割结构,其中, 致动包括从管状体延伸块体,以及用延伸块体进行钻井成形
    • 6. 发明授权
    • Apparatuses and methods for stabilizing downhole tools
    • 用于稳定井下工具的装置和方法
    • US09051793B2
    • 2015-06-09
    • US13324265
    • 2011-12-13
    • Navish MakkarBrian CruickshankCharles DeweyMichael G. Azar
    • Navish MakkarBrian CruickshankCharles DeweyMichael G. Azar
    • E21B10/32E21B17/10
    • E21B10/32E21B7/28E21B10/322E21B17/1078
    • A secondary cutting structure for use in a drilling assembly includes a tubular body, and a block, extendable from the tubular body, the block including a first arrangement of cutting elements disposed on a first blade, a first stabilization section disposed proximate the first arrangement of cutting elements, a second arrangement of cutting elements disposed on the first blade, and a second stabilization section disposed proximate the second arrangement of cutting elements. A method of drilling includes disposing a drilling assembly in a wellbore, the drilling assembly including a secondary cutting structure having a tubular body and a block, extendable from the body, the block including at least three blades, actuating the secondary cutting structure, wherein the actuating includes extending the block from the tubular body, and drilling formation with the extended block.
    • 用于钻井组件的二次切割结构包括管状主体和可从管状体延伸的块,该块包括设置在第一叶片上的切割元件的第一布置,第一稳定部分, 切割元件,设置在第一刀片上的切割元件的第二布置,以及靠近第二切割元件布置设置的第二稳定部。 一种钻井方法包括将钻井组件设置在井眼中,钻井组件包括具有管状主体和块的辅助切割结构,该主体可从本体延伸,该块包括至少三个叶片,致动第二切割结构,其中, 致动包括从管状体延伸块体,以及用延伸块体进行钻井成形。
    • 8. 发明授权
    • Placement of cutting elements on secondary cutting structures of drilling tool assemblies
    • 切割元件在钻具组件的二次切割结构上的放置
    • US07954564B2
    • 2011-06-07
    • US12179469
    • 2008-07-24
    • Navish MakkarWei TangGordon WhippleTommy LairdGail Nelson
    • Navish MakkarWei TangGordon WhippleTommy LairdGail Nelson
    • E21B10/32
    • E21B10/322
    • A secondary cutting structure for sure in a drilling assembly, the secondary cutting structure including a tubular body and a block, extendable from the tubular body, the block including a first arrangement of cutting elements disposed on a first blade and a second arrangement of cutting elements disposed on a second blade, wherein the second arrangement is a modified redundant arrangement. Also, a secondary cutting structure for use in a drilling assembly, the secondary cutting structure including a leading blade disposed on a first block and a trailing blade disposed on the first block adjacent the leading blade. Additionally, the secondary cutting structure includes a unique blade disposed on a second block, wherein a gage portion of at least one of the blades has a length between 30% and 45% of a total blade length.
    • 一种用于钻井组件中的第二切割结构,所述次切割结构包括可从所述管状体延伸的管状体和块,所述块包括设置在第一叶片上的切割元件的第一布置和切割元件的第二布置 设置在第二刀片上,其中第二布置是修改的冗余布置。 另外,一种用于钻井组件的二次切割结构,该二次切割结构包括设置在第一块上的前刀片和设置在邻近前刀片的第一块上的后刀片。 另外,二次切割结构包括设置在第二块上的唯一刀片,其中至少一个刀片的计量部分具有总叶片长度的30%至45%之间的长度。