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81. 发明授权

US06564876B2 Packer 有权
标题翻译：封隔器
公开(公告)号：US06564876B2
公开(公告)日：2003-05-20
申请号：US09745973
申请日：2001-02-09
申请人： Vladimir Vaynshteyn , James D. Hendrickson , Jim B. Benton , Raghu Madhaven , Mitchell G. Willcox , Dinesh R. Patel
发明人： Vladimir Vaynshteyn , James D. Hendrickson , Jim B. Benton , Raghu Madhaven , Mitchell G. Willcox , Dinesh R. Patel
IPC分类号： E21B2304
CPC分类号： E21B43/116 , E21B33/126 , E21B33/1295 , E21B34/063
摘要： A packer for use inside a casing of a subterranean well includes a resilient element, a housing and a rupture disc. The resilient element is adapted to seal off an annulus of the well when compressed, and the housing is adapted to compress the resilient element in response to a pressure exerted by fluid of the annulus of a piston head of the housing. The housing includes a port for establishing fluid communication with the annulus. The rupture disc is adapted to prevent the fluid in the annulus from entering the port and contacting the piston head until the pressure exerted by the fluid exceeds a predefined threshold and ruptures the rupture disc.
摘要翻译：用于在地下井的壳体内使用的封隔器包括弹性元件，壳体和破裂盘。弹性元件适于在压缩时密封井的环空，并且壳体适于响应于由壳体的活塞头的环的流体施加的压力而压缩弹性元件。壳体包括用于与环形部件建立流体连通的端口。破裂盘适于防止环空中的流体进入端口并接触活塞头，直到由流体施加的压力超过预定阈值并破裂破裂盘。

82. 发明授权

US5857520A Backup shoe for well packer 失效
标题翻译：打包机备用鞋
公开(公告)号：US5857520A
公开(公告)日：1999-01-12
申请号：US748880
申请日：1996-11-14
申请人： Bryon D. Mullen , James D. Hendrickson
发明人： Bryon D. Mullen , James D. Hendrickson
IPC分类号： E21B33/12 , E21B33/128
CPC分类号： E21B33/1208 , E21B33/1216
摘要： A backup shoe for a well packer provides high pressure sealing capability without requiring a large setting force or setting stroke of the packer. In a preferred embodiment, a backup shoe has an inner portion with a relatively thin cross-section and an outer portion with a relatively thick cross-section. Additionally, the inner portion has a pivot point between its ends. In a preferred embodiment of a packer utilizing the backup shoe, an element retainer axially contacts the inner portion adjacent its pivot point, and a seal element axially contacts an inner sloping surface formed on the outer portion.
摘要翻译：用于井封包机的备用鞋提供高压密封能力，而不需要大的设定力或打包机的设定冲程。在优选实施例中，支承靴具有相对薄的横截面的内部部分和具有相对较厚横截面的外部部分。此外，内部部分在其端部之间具有枢转点。在利用支承靴的封隔器的优选实施例中，元件保持器轴向地接触靠近其枢转点的内部部分，并且密封元件轴向接触形成在外部部分上的内部倾斜表面。

83. 发明授权

US5636691A Abrasive slurry delivery apparatus and methods of using same 失效
标题翻译：砂浆输送装置及其使用方法
公开(公告)号：US5636691A
公开(公告)日：1997-06-10
申请号：US529769
申请日：1995-09-18
申请人： James D. Hendrickson , Dean S. O'Neal , Sidney J. Guillot , Ronnie D. Finley
发明人： James D. Hendrickson , Dean S. O'Neal , Sidney J. Guillot , Ronnie D. Finley
IPC分类号： E21B17/10 , E21B43/26 , E21B43/04
CPC分类号： E21B17/1085 , E21B43/26
摘要： An abrasive slurry delivery apparatus and associated method of using permit repeated and/or extended use of the apparatus in a subterranean wellbore and reduces abrasive wear of the casing during fracturing operations without requiring the disposal of expensive items of equipment after each fracturing operation. In a preferred embodiment, an abrasive slurry delivery apparatus has a tubular crossover member with an internal flow passage and side wall outlet openings, and a tubular protective member with outlet openings aligned with, but axially and circumferentially smaller than, the crossover outlet openings, coaxially disposed within the crossover.
摘要翻译：一种磨料浆料输送装置和相关方法，其允许在地下井筒中重复和/或延长使用该装置，并且在压裂操作期间减少壳体的磨损，而不需要在每次压裂操作之后处置昂贵的设备物品。在优选实施例中，磨料浆料输送装置具有带有内部流动通道和侧壁出口开口的管状交叉构件，以及管状保护构件，其具有与交叉出口开口对齐但轴向和周向小于交叉出口开口的出口置于交叉口内。

84. 发明授权

US4886113A Positive indication shear ring 失效
标题翻译：正指示剪环
公开(公告)号：US4886113A
公开(公告)日：1989-12-12
申请号：US166898
申请日：1988-03-11
申请人： Colby M. Ross , Frank Giusti, Jr. , James D. Hendrickson
发明人： Colby M. Ross , Frank Giusti, Jr. , James D. Hendrickson
IPC分类号： E21B17/06 , E21B23/02 , E21B43/04
CPC分类号： E21B23/02 , E21B17/06 , E21B43/04
摘要： A positive position indicating tool includes a snap ring mounted on a mandrel. The snap ring is blocked on the mandrel by a shear sleeve and provides a positive stop to upward retraction of a work string. The snap ring is shearably released when it is desired to retract and/or retrieve the work string. The snap ring is supported on the mandrel by a shear sleeve which is locked onto the mandrel by shear pins. An annular recess is formed in the sidewall of the mandrel between the shear pins and the snap ring. As the tension loading on the work string increases above the combined shear strength of the shear pins, the shear sleeve and positive indication snap ring are displaced downwardly along the mandrel, and the snap ring moves into the annular recess and contracts radially out of obstructing engagement. The snap ring incorporates alternating slots which permit it to expand and recover without permanent deformation. The slots are angularly displaced from a large angle at the back of the ring to progressively smaller displacement angles toward the open end portions of the ring. The slots are more widely separated and are shallower in the high stress regions of the snap ring, and are more closely located and are deeper in the low stress regions of the ring.
摘要翻译：正位置指示工具包括安装在心轴上的卡环。卡环通过剪切套筒在心轴上阻塞，并提供正向停止以向上收回工作串。当需要缩回和/或取回工作串时，卡环可以被剪切地释放。卡环通过剪切套筒支撑在心轴上，剪切套筒通过剪切销锁定在心轴上。在心轴的侧壁在剪切销和卡环之间形成环形凹部。当工作线上的拉力负载增加到剪切销的组合剪切强度以上时，剪切套筒和正指示卡环沿着心轴向下移位，并且卡环移动到环形凹部中并径向收缩以阻止接合。卡环包含交替的槽，允许其膨胀和恢复而不会永久变形。槽在环的后部从大角度角度地移位到朝向环的开口端部逐渐变小的位移角。狭缝分布更广泛，在卡环的高应力区域较浅，并且在环的低应力区域中更靠近并且更深。

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