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1. 发明授权

US08978783B2 Jet arrangement on an expandable downhole tool 有权
标题翻译：喷射装置在可扩展井下工具上
公开(公告)号：US08978783B2
公开(公告)日：2015-03-17
申请号：US13116777
申请日：2011-05-26
申请人： Brian Cruickshank , Manoj Mahajan , Navish Makkar , Sameer Bhoite , Charles Dewey
发明人： Brian Cruickshank , Manoj Mahajan , Navish Makkar , Sameer Bhoite , Charles Dewey
IPC分类号： E21B7/00 , E21B10/32 , E21B10/60 , E21B17/10
CPC分类号： E21B10/322 , E21B10/60 , E21B17/1078
摘要： 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. At least one moveable arm, which translates between a collapsed and expanded position in response to a differential pressure between the axial flowbore and the wellbore, includes a borehole-engaging surface with cutting elements and at least one nozzle to direct a fluid across the borehole-engaging surface. Flow directing elements on the external surface of the tool may be used to decrease the flow area in an annulus between the tool and the wellbore and directs fluid flow in the annulus toward the borehole-engaging surface.
摘要翻译：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。响应于轴流孔和井眼之间的压差，在折叠和膨胀位置之间平移的至少一个可移动臂包括具有切割元件的钻孔接合表面和至少一个喷嘴以将流体引导穿过钻孔 - 接合面。可以使用工具外表面上的流动引导元件来减小工具和井筒之间的环形空间中的流动面积，并且将空气中的流体流引向钻孔接合表面。

2. 发明申请

US20120073879A1 DOWNHOLE REAMER ASYMMETRIC CUTTING STRUCTURES 有权
标题翻译：倒角不对称切割结构
公开(公告)号：US20120073879A1
公开(公告)日：2012-03-29
申请号：US12893652
申请日：2010-09-29
申请人： Navish Makkar , Tommy G. Ray , Manoj Mahajan , Dwayne P. Terracina , Sameer Bhoite
发明人： Navish Makkar , Tommy G. Ray , Manoj Mahajan , Dwayne P. Terracina , Sameer Bhoite
IPC分类号： E21B10/26
CPC分类号： E21B10/46 , E21B10/32 , E21B10/322 , E21B10/43
摘要： A cutting structure for use with a reamer in enlarging a borehole in a subterranean formation includes a plurality of cutter blocks, radially extendable from a reamer body away from a central axis of the reamer body, each of the plurality of cutter blocks comprising at least one cutter blade thereon, wherein an angular spacing about the central axis of the reamer body between the at least one cutter blade on each of the plurality of cutter blocks is unequal.
摘要翻译：用于扩孔钻孔的地下钻孔中的切割结构包括多个切割块，其可从铰刀主体远离扩孔器主体的中心轴线径向延伸，多个切割块中的每一个包括至少一个其中在所述多个切割器块中的每一个上的所述至少一个切割刀片之间围绕所述铰刀主体的中心轴线的角度间隔是不相等的。

3. 发明授权

US08550188B2 Downhole reamer asymmetric cutting structures 有权
标题翻译：井下铰刀不对称切割结构
公开(公告)号：US08550188B2
公开(公告)日：2013-10-08
申请号：US12893652
申请日：2010-09-29
申请人： Navish Makkar , Tommy G. Ray , Manoj Mahajan , Dwayne P. Terracina , Sameer Bhoite
发明人： Navish Makkar , Tommy G. Ray , Manoj Mahajan , Dwayne P. Terracina , Sameer Bhoite
IPC分类号： E21B10/00
CPC分类号： E21B10/46 , E21B10/32 , E21B10/322 , E21B10/43
摘要： A cutting structure for use with a reamer in enlarging a borehole in a subterranean formation includes a plurality of cutter blocks, radially extendable from a reamer body away from a central axis of the reamer body, each of the plurality of cutter blocks comprising at least one cutter blade thereon, wherein an angular spacing about the central axis of the reamer body between the at least one cutter blade on each of the plurality of cutter blocks is unequal.
摘要翻译：用于扩孔钻孔的地下钻孔中的切割结构包括多个切割块，其可从铰刀主体远离扩孔器主体的中心轴线径向延伸，多个切割块中的每一个包括至少一个其中在所述多个切割器块中的每一个上的所述至少一个切割刀片之间围绕所述铰刀主体的中心轴线的角度间隔是不相等的。

4. 发明授权

US08337085B2 Air circulation ports in rotary rock bit journal bearing 有权
标题翻译：旋转钻头轴颈轴承中的空气循环端口
公开(公告)号：US08337085B2
公开(公告)日：2012-12-25
申请号：US12436710
申请日：2009-05-06
申请人： Mahavir Nagaraj , Jeremy Marcus , Vincent Wayne Shotton , Sameer Bhoite
发明人： Mahavir Nagaraj , Jeremy Marcus , Vincent Wayne Shotton , Sameer Bhoite
IPC分类号： F16C33/00 , F16C31/00 , E21B10/00
CPC分类号： E21B21/16 , E21B10/22 , E21B10/23
摘要： A thrust bearing system for a roller cone rock bit includes at least one roller cone disposed on a leg having an air channel therethrough, the thrust bearing system including a primary thrust bearing surface on the leg configured to contact a corresponding primary bearing surface on the roller cone, wherein the primary thrust bearing surface on the leg includes at least one air circulation port in fluid communication with the air channel. The thrust bearing system further includes a secondary thrust bearing surface on the leg configured to contact a corresponding secondary bearing surface on the roller cone, wherein the secondary thrust bearing surface on the leg includes at least two air circulation ports located at specified locations in the secondary bearing surface and in communication with the air channel, and wherein a first circulation port is located in an upper half of the secondary thrust bearing surface and a second circulation port is located in a lower half of the secondary thrust bearing surface.
摘要翻译：用于滚子锥形岩石钻头的止推轴承系统包括设置在具有穿过其中的空气通道的腿部上的至少一个辊锥体，所述推力轴承系统包括腿上的主推力支承表面，其构造成接触所述辊上的对应的主轴承表面锥体，其中腿部上的主推力承载表面包括与空气通道流体连通的至少一个空气循环端口。推力轴承系统还包括腿上的次级止推轴承表面，其构造成接触在辊锥上的对应的次级支承表面，其中腿上的次级止推轴承表面包括至少两个空气循环端口，位于次级的指定位置轴承表面并与空气通道连通，并且其中第一循环端口位于次级止推轴承表面的上半部中，并且第二循环端口位于次级止推轴承表面的下半部中。

5. 发明申请

US20100284636A1 AIR CIRCULATION PORTS IN ROTARY ROCK BIT JOURNAL BEARING 有权
标题翻译：旋转岩石轴承中的空气循环孔
公开(公告)号：US20100284636A1
公开(公告)日：2010-11-11
申请号：US12436710
申请日：2009-05-06
申请人： Mahavir Nagaraj , Jeremy Marcus , Vincent Wayne Shotton , Sameer Bhoite
发明人： Mahavir Nagaraj , Jeremy Marcus , Vincent Wayne Shotton , Sameer Bhoite
IPC分类号： F16C19/10 , E21B10/22
CPC分类号： E21B21/16 , E21B10/22 , E21B10/23
摘要： A thrust bearing system for a roller cone rock bit includes at least one roller cone disposed on a leg having an air channel therethrough, the thrust bearing system including a primary thrust bearing surface on the leg configured to contact a corresponding primary bearing surface on the roller cone, wherein the primary thrust bearing surface on the leg includes at least one air circulation port in fluid communication with the air channel. The thrust bearing system further includes a secondary thrust bearing surface on the leg configured to contact a corresponding secondary bearing surface on the roller cone, wherein the secondary thrust bearing surface on the leg includes at least two air circulation ports located at specified locations in the secondary bearing surface and in communication with the air channel, and wherein a first circulation port is located in an upper half of the secondary thrust bearing surface and a second circulation port is located in a lower half of the secondary thrust bearing surface.
摘要翻译：用于滚子锥形岩石钻头的止推轴承系统包括设置在具有穿过其中的空气通道的腿部上的至少一个辊锥体，所述推力轴承系统包括腿上的主推力支承表面，其构造成接触所述辊上的对应的主轴承表面锥体，其中腿部上的主推力承载表面包括与空气通道流体连通的至少一个空气循环端口。推力轴承系统还包括腿上的次级止推轴承表面，其构造成接触在辊锥上的对应的次级支承表面，其中腿上的次级止推轴承表面包括至少两个空气循环端口，位于次级的指定位置轴承表面并与空气通道连通，并且其中第一循环端口位于次级止推轴承表面的上半部中，并且第二循环端口位于次级止推轴承表面的下半部中。

6. 发明申请

US20120298423A1 JET ARRANGEMENT ON AN EXPANDABLE DOWNHOLE TOOL 有权
标题翻译：喷射装置在可膨胀的下车工具上
公开(公告)号：US20120298423A1
公开(公告)日：2012-11-29
申请号：US13116777
申请日：2011-05-26
申请人： Brian Cruickshank , Manoj Mahajan , Navish Makkar , Sameer Bhoite , Charles Dewey
发明人： Brian Cruickshank , Manoj Mahajan , Navish Makkar , Sameer Bhoite , Charles Dewey
IPC分类号： E21B7/28 , E21B10/32
CPC分类号： E21B10/322 , E21B10/60 , E21B17/1078
摘要： 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.
摘要翻译：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。

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