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1. 发明申请

WO2008063979A1 SPRING ENERGIZED DEBRIS BARRIER FOR MECHANICALLY SET RETRIEVABLE PACKER 审中-公开
标题翻译：用于机械设置可恢复包装机的弹簧式能力障碍
公开(公告)号：WO2008063979A1
公开(公告)日：2008-05-29
申请号：PCT/US2007/084480
申请日：2007-11-13
申请人： BAKER HUGHES INCORPORATED , KOSSA, Edward, J. , RAMIREZ, Rafael
发明人： KOSSA, Edward, J. , RAMIREZ, Rafael
IPC分类号： E21B33/129
CPC分类号： E21B33/1292
摘要： A debris barrier (30) for a retrievable mechanical set packer is held retracted for run in. It is held spaced apart from upper slips (18) and uses a spring bias (16) that acts on the slips to keep them energized to also energize the barrier to the extended position to keep debris out of the upper slips (18) when the packer is set. The debris barrier (30) is preferably a sleeve that is axially compressed by the setting procedure to increase in diameter and span the gap between the packer mandrel (10) and the set upper slips (18). Retrieving the packer is enabled by a retraction of the debris barrier (30) as the upper slips (18) are undermined with rotation and pickup force on the packer mandrel (10). The lack of a debris barrier (30) could prevent retrieval of the packer in well bores where debris is present and has a tendency to settle around and more critically under the upper slips (18).
摘要翻译：用于可回收的机械定型封隔器的碎片挡板（30）被缩回以用于运行。其与上滑块（18）保持间隔开，并且使用作用在滑动件上的弹簧偏压（16）以保持其通电，同时激励当封隔器被固定时，将阻挡物保持在上部滑动件（18）之外的位置以将碎屑保持在上方。碎片挡板（30）优选是通过设定步骤轴向压缩的套筒，以增加直径并跨越封隔器心轴（10）和设定的上滑动件（18）之间的间隙。通过在封隔器心轴（10）上的旋转和拾取力破坏上部滑块（18）时，通过使碎片屏障（30）回缩来实现取回封隔器。缺少碎片屏障（30）可以防止在存在碎屑的井眼中的包装机的回收，并且具有在上部滑块（18）下方并且更严重地沉降的倾向。

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