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1. 发明授权

US07401788B2 High pressure and temperature seal for downhole use 有权
标题翻译：高压和高温密封用于井下使用
公开(公告)号：US07401788B2
公开(公告)日：2008-07-22
申请号：US11842728
申请日：2007-08-21
申请人： Ronald D. Williams , Edward Wayne Welch, Jr.
发明人： Ronald D. Williams , Edward Wayne Welch, Jr.
IPC分类号： E21B33/128
CPC分类号： E21B33/1208 , E21B2033/005 , F16J15/181 , F16J15/3236
摘要： A seal for use in temperature and pressure extremes is disclosed. It features springs internal to the sealing members and the ability to seal against pressure differentials from opposed directions. A spacer ring prevents contact from oppositely oriented seal components and at the same time prevents spring and seal collapse under extreme loading conditions. The seal assembly is self-centering in a downhole seal bore and can be used on tools delivered on wireline, where the insertion forces available are at a minimum. The seal can withstand pressure differentials in excess of 13,500 PSI and temperatures above 350 degrees Fahrenheit.
摘要翻译：公开了用于温度和压力极限的密封件。它具有密封件内部的弹簧以及从相对的方向密封压差的能力。间隔环防止相对定向的密封部件接触，同时防止在极端负载条件下的弹簧和密封件塌陷。密封组件在井下密封孔中是自定心的，并且可以用于在电缆上传送的工具上，其中可用的插入力是最小的。密封件可以承受超过13,500 PSI和高于350华氏度的温度的压力差。

2. 发明授权

US06779600B2 Labyrinth lock seal for hydrostatically set packer 失效
标题翻译：用于静液压封隔器的迷宫式锁紧密封
公开(公告)号：US06779600B2
公开(公告)日：2004-08-24
申请号：US09916985
申请日：2001-07-27
申请人： James King , Edward Wayne Welch, Jr.
发明人： James King , Edward Wayne Welch, Jr.
IPC分类号： E21B2306
CPC分类号： E21B33/1295
摘要： A hydrostatically set packer is disclosed. The actuating piston is locked for run in by a lock sleeve and lock dog arrangement. When the desired depth is reached well pressure is built up to break a rupture disc to allow hydrostatic pressure to act on one side of a lock sleeve. The other side of the lock sleeve is exposed to a chamber under atmospheric or low pressure. Movement of the lock sleeve releases the lock dog allowing piston movement to set the packer. The lock sleeve has a labyrinth seal so that seal leakage below a predetermined level will not prematurely activate the piston lock and prematurely set the packer. A variety of designs for the labyrinth are described.
摘要翻译：公开了一种静压式封隔器。致动活塞被锁定以通过锁定套筒和锁定装置进入。当达到所需的深度时，建立了压力以打破破裂盘，以允许静水压力作用在锁定套筒的一侧上。锁定套筒的另一侧在大气压或低压下暴露于室内。锁定套的移动释放锁定爪，允许活塞移动来设置封隔器。锁定套筒具有迷宫式密封，使得低于预定水平的密封泄漏不会过早地激活活塞锁并且过早地设置封隔器。描述了迷宫的各种设计。

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