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公开(公告)号：US08511375B2
公开(公告)日：2013-08-20
申请号：US12772313
申请日：2010-05-03
CPC分类号： E21B37/02
摘要： A wellbore cleaning device having a unitary tool mandrel surrounded by a retaining sleeve that is rotatable with respect to the mandrel. A locking ring is used to secure the retaining sleeve to the mandrel. Cleaning blades are retained within recesses in the retaining sleeve and are biased radially outwardly from the recesses by springs.
摘要翻译： 井眼清洁装置具有由可相对于心轴旋转的保持套筒包围的整体工具心轴。 使用锁定环将固定套固定在心轴上。 清洁刀片保持在保持套筒的凹槽内并且通过弹簧从凹部径向向外偏压。
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公开(公告)号：US20110265988A1
公开(公告)日：2011-11-03
申请号：US12772313
申请日：2010-05-03
IPC分类号： E21B37/00
CPC分类号： E21B37/02
摘要： A wellbore cleaning device having a unitary tool mandrel surrounded by a retaining sleeve that is rotatable with respect to the mandrel. A locking ring is used to secure the retaining sleeve to the mandrel. Cleaning blades are retained within recesses in the retaining sleeve and are biased radially outwardly from the recesses by springs.
摘要翻译： 井眼清洁装置具有由可相对于心轴旋转的保持套筒包围的整体工具心轴。 使用锁定环将固定套固定在心轴上。 清洁刀片保持在保持套筒的凹槽内并且通过弹簧从凹部径向向外偏压。
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公开(公告)号：US20080190620A1
公开(公告)日：2008-08-14
申请号：US11705367
申请日：2007-02-12
申请人： Lisa L. Posevina , Gregory L. Hern
发明人： Lisa L. Posevina , Gregory L. Hern
CPC分类号： E21B21/103
摘要： A circulating sub is run in with the circulating port closed. A dart blocks a central passage and moves two concentric pistons in tandem to open the circulation port while retaining the dart. The outer piston shoulders out in the circulation port open position. A second dart lands on the first and with applied pressure moves the inner piston relative to the shouldered outer piston to close the circulation port and only then discharge both darts. Subs can be used in tandem as long as higher located subs accept larger darts than lower subs and preferably the two darts for each sub are the same size. The ejected darts can be used to pressure actuate a downhole tool like a packer.
摘要翻译： 循环子程序运行在循环端口关闭。 飞镖阻挡中央通道并串联移动两个同心活塞以打开循环口，同时保持飞镖。 外部活塞在循环端口打开位置。 第二个飞镖首先降落，施加的压力使内部活塞相对于肩部的外部活塞移动以关闭循环端口，然后仅释放两个飞镖。 只要较高的位置接受较大的飞镖而不是较低的下限，并且优选地，每个子的两个飞镖的大小相同，则可以串联使用。 弹出的飞镖可用于压力启动井下工具，如封隔器。
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公开(公告)号：US07934559B2
公开(公告)日：2011-05-03
申请号：US11705367
申请日：2007-02-12
申请人： Lisa L. Posevina , Gregory L. Hern
发明人： Lisa L. Posevina , Gregory L. Hern
IPC分类号： E21B34/06
CPC分类号： E21B21/103
摘要： A circulating sub is run in with the circulating port closed. A dart blocks a central passage and moves two concentric pistons in tandem to open the circulation port while retaining the dart. The outer piston shoulders out in the circulation port open position. A second dart lands on the first and with applied pressure moves the inner piston relative to the shouldered outer piston to close the circulation port and only then discharge both darts. Subs can be used in tandem as long as higher located subs accept larger darts than lower subs and preferably the two darts for each sub are the same size. The ejected darts can be used to pressure actuate a downhole tool like a packer.
摘要翻译： 循环子程序运行在循环端口关闭。 飞镖阻挡中央通道并串联移动两个同心活塞以打开循环口，同时保持飞镖。 外部活塞在循环端口打开位置。 第二个飞镖首先降落，施加的压力使内部活塞相对于肩部的外部活塞移动，以关闭循环端口，然后仅释放两个飞镖。 只要较高的位置接受较大的飞镖而不是较低的下限，并且优选地，每个子的两个飞镖的大小相同，则可以串联使用。 弹出的飞镖可用于压力启动井下工具，如封隔器。
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公开(公告)号：US20100096122A1
公开(公告)日：2010-04-22
申请号：US12578727
申请日：2009-10-14
IPC分类号： E21B37/00
摘要： Non-rotating tubular wellbore cleaning devices are described which include a central tool mandrel with radially surrounding stabilizers and a cleaning member subassembly. A rotational bearing is provided that is partially radially recessed, thereby improving the overall strength of the cleaning device.
摘要翻译： 描述了非旋转管状井眼清洁装置，其包括具有径向围绕的稳定器的中心工具心轴和清洁构件子组件。 提供部分径向凹入的旋转轴承，从而提高清洁装置的整体强度。
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