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公开(公告)号：US20080149350A1
公开(公告)日：2008-06-26
申请号：US11644525
申请日：2006-12-22
IPC分类号： E21B33/12
摘要： A material that reacts to produced hydrocarbons acts as a latch to retain a stored potential energy force. In a specific application, a sliding sleeve valve is held away from a circulating port to allow drilling mud to be circulated out. Later, when the well is put on production, the lock that holds collets in a groove releases as exposure to produced hydrocarbons at a retaining sleeve makes it get soft. This, in turn, allows a spring force to run the collets out of their groove and straddle the circulation port between two o-rings on the shifting sleeve to close the port. The closure of the port directs produced hydrocarbons to screens that had been bypassed when mud was circulated out due to ports being the path of least resistance.
摘要翻译： 与生成的碳氢化合物反应的材料用作锁存器以保持存储的势能。 在具体应用中，将滑动套筒阀从循环端口远离，以允许钻井泥浆循环。 后来，当油井投入生产时，将夹头夹在凹槽中的锁释放，因为在保持套筒上暴露于生产的碳氢化合物，使其变软。 这反过来又允许弹簧力将夹头从其凹槽中移出并跨越换档套筒上的两个O形圈之间的循环端口以关闭端口。 由于港口是最小阻力的路径，港口的关闭将产生的碳氢化合物引导到已经绕过泥浆的筛网。
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公开(公告)号：US07467664B2
公开(公告)日：2008-12-23
申请号：US11644525
申请日：2006-12-22
IPC分类号： E21B34/08
摘要： A material that reacts to produced hydrocarbons acts as a latch to retain a stored potential energy force. In a specific application, a sliding sleeve valve is held away from a circulating port to allow drilling mud to be circulated out. Later, when the well is put on production, the lock that holds collets in a groove releases as exposure to produced hydrocarbons at a retaining sleeve makes it get soft. This, in turn, allows a spring force to run the collets out of their groove and straddle the circulation port between two o-rings on the shifting sleeve to close the port. The closure of the port directs produced hydrocarbons to screens that had been bypassed when mud was circulated out due to ports being the path of least resistance.
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