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1. 发明申请

US20030056953A1 Method and apparatus for plugging a wellbore 审中-公开
公开(公告)号：US20030056953A1
公开(公告)日：2003-03-27
申请号：US10289646
申请日：2002-11-07
申请人： Weatherford/Lamb, Inc.
发明人： David Moore Tumlin , Gene K. Fugatt SR. , David Hosie , Mike Luke
IPC分类号： E21B043/116
CPC分类号： E21B43/112 , E21B33/134 , E21B43/1185 , E21B43/11852 , E21B43/11855
摘要： The present invention provides a method and apparatus for plugging a wellbore in a trip saving manner. In one aspect, the invention includes a cement retainer disposed on a run-in string and a radially expanded perforating assembly disposed below the cement retainer. In a single run, the apparatus provides for perforating a wellbore and squeezing cement through the perforations and into the formation therearound. In another aspect, a method of plugging the wellbore includes running a cement retainer and a radially expanded perforating assembly into a wellbore on a run-in string. After the cement retainer is set, a firing head is actuated to cause the perforating gun to discharge. After perforations are formed, cement is introduced from the cement retainer into the isolated area and squeezed through the perforations. Thereafter, the run-in string disengages from the cement retainer leaving behind the plug formed. In yet another aspect, a firing head capable of being actuated by different means is used to discharge the perforating assembly.

2. 发明申请

US20040069496A1 Wellbore isolation apparatus, and method for tripping pipe during underbalanced drilling 有权
标题翻译：井筒隔离装置，以及在平衡钻井期间跳闸管道的方法
公开(公告)号：US20040069496A1
公开(公告)日：2004-04-15
申请号：US10270015
申请日：2002-10-11
申请人： Weatherford/Lamb, Inc.
发明人： David Hosie , Mike A. Luke
IPC分类号： E21B034/06
CPC分类号： E21B33/1275 , E21B7/061 , E21B17/06 , E21B17/07 , E21B23/01 , E21B23/04 , E21B23/06 , E21B23/065 , E21B29/06 , E21B33/10 , E21B33/1295 , E21B41/0035 , E21B2021/006
摘要： The present invention relates to an apparatus and method for isolating a wellbore condition such as formation pressure during a wellbore operation. The invention has particular application in connection with underbalanced drilling. In one arrangement, a formation isolation apparatus is provided that serves as a selectively actuatable plug. The plug in one aspect is selectively set and released by a setting/releasing tool. The setting/releasing tool includes a system for setting the plug in the wellbore, and a system for releasing the plug from the wellbore. The setting/releasing tool is releasably connected to the plug. Thus, after the plug has been set, the setting/releasing tool may be removed from the wellbore. The plug includes a flapper valve that is restrained in its open position by the setting/releasing tool. Removal of the setting/releasing tool from the wellbore allows the flapper valve to close, thereby isolating pressures in the wellbore below the flapper valve. The plug is wireline retrievable. In another aspect, a formation isolation apparatus is provided for use during sidetrack drilling operations. The sealing element is movable from a first released position below the lateral wellbore, to a set position above the lateral wellbore.
摘要翻译：本发明涉及一种用于在井眼操作期间隔离诸如地层压力的井筒状况的装置和方法。本发明具有与欠平衡钻井有关的特殊应用。在一种布置中，提供了用作可选择性致动的塞子的地层隔离装置。一个方面的插头由设置/释放工具选择性地设置和释放。设置/释放工具包括用于将塞子设置在井眼中的系统以及用于从井眼释放塞子的系统。设置/释放工具可释放地连接到插头。因此，在塞子已经被设定之后，设置/释放工具可以从井筒中移除。塞子包括一个挡板阀，该挡板阀通过设置/释放工具被限制在其打开位置。从井筒移除设定/释放工具允许挡板阀关闭，从而隔离挡板阀下方的井眼中的压力。插头是可回收线。在另一方面，提供了一种用于侧钻钻井操作中的地层隔离装置。密封元件可从侧井筒下方的第一释放位置移动到侧井筒上方的设定位置。

3. 发明申请

US20040221986A1 Apparatus and methods for placing downhole tools in a wellbore 有权
标题翻译：将井下工具放置在井眼中的装置和方法
公开(公告)号：US20040221986A1
公开(公告)日：2004-11-11
申请号：US10848337
申请日：2004-05-18
申请人： Weatherford/Lamb, Inc.
发明人： David Hosie , Thomas Roesner
IPC分类号： E21B049/00
CPC分类号： E21B47/09 , E21B47/121
摘要： Methods and apparatus are provided that permit downhole tools to be run into a well along with logging tools that can log the downhole tools into place by real time transmission of the data to a surface location. In one aspect, an apparatus includes a telemetry tool, a logging tool in communication with the telemetry tool and a downhole tool.
摘要翻译：提供了允许井下工具与测井工具一起运行的井下工具的方法和装置，该测井工具可以通过将数据实时传输到地面位置来将井下工具记录到位。一方面，一种装置包括遥测工具，与遥测工具通信的测井工具和井下工具。

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