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1. 发明授权

US09863217B2 Magnetic cleaning tool 有权
公开(公告)号：US09863217B2
公开(公告)日：2018-01-09
申请号：US14414746
申请日：2013-07-17
申请人： Servwell Engineering Limited
发明人： Ruairidh Andrew Cooper
IPC分类号： E21B37/00 , E21B31/06
CPC分类号： E21B37/00 , E21B31/06
摘要： A magnetic cleaning tool for collecting ferrous debris in a wellbore and a method of cleaning a wellbore. The magnetic cleaning tool has a tool body for attachment in a work string, one or more magnets supported on the tool body, and a sleeve located around the tool body which is arranged to be moveable along the body to provide selective coverage of the magnets. Embodiments are described providing shear pins and spring loaded balls to hold the sleeve either over the magnets or free of the magnets. An expandable piston, moveable by action of a drop ball, is described to release the sleeve. The sleeve is arranged so that the magnets can be covered and therefore effectively inactive on run-in and during downhole operations, and uncovered to be active when pulled out of the wellbore.

2. 再颁专利

USRE46286E1 Downhole mixing tool 有权
标题翻译：井下混合工具
公开(公告)号：USRE46286E1
公开(公告)日：2017-01-24
申请号：US15071595
申请日：2016-03-16
申请人： Servwell Engineering Limited
发明人： Richard Alvin Armell , Ruairidh Andrew Cooper
IPC分类号： E21B27/00 , E21B37/00 , E21B43/12 , E21B43/29 , B01F3/12 , B01F5/04
CPC分类号： E21B43/124 , B01F3/12 , B01F5/0463 , E21B43/29
摘要： A downhole mixing tool and method for removing sand and other debris from a wellbore which combines the sand with a treatment fluid so that the sand is lifted to the surface of the well for removal. The tool includes a chamber into which the sand laden fluid is drawn and the treatment fluid is introduced. Ports into the chamber are arranged to provide a pressure drop to draw the sand laden fluid into the chamber and a mixing time within the chamber before sand laden fluid of lower viscosity exits the chamber to travel to the surface. Additional features include blades on the tool for breaking up obstructions prior to being drawn into the chamber and a lubricating line through the tool to introduce lubricating fluid to the blades.
摘要翻译：一种井下混合工具和从井筒中除去沙子和其他碎屑的方法，其将砂与处理液结合在一起，以使砂被提升到井的表面以除去。该工具包括一个腔室，吸入含沙液体并引入处理流体。进入腔室的端口被布置成提供压降以将含沙的流体吸入腔室中，并且在较低粘度的含沙流体离开腔室之前在腔室内的混合时间移动到表面。附加特征包括刀具上的刀片，用于在被吸入腔室之前破坏障碍物，以及通过该工具的润滑管线将润滑流体引入刀片。

3. 发明申请

US20150192000A1 Magnetic Cleaning Tool 有权
标题翻译：磁性清洁工具
公开(公告)号：US20150192000A1
公开(公告)日：2015-07-09
申请号：US14414746
申请日：2013-07-17
申请人： Servwell Engineering Limited
发明人： Ruairidh Andrew Cooper
IPC分类号： E21B37/00
CPC分类号： E21B37/00 , E21B31/06
摘要： A magnetic cleaning tool for collecting ferrous debris in a wellbore and a method of cleaning a wellbore. The magnetic cleaning tool has a tool body for attachment in a work string, one or more magnets supported on the tool body, and a sleeve located around the tool body which is arranged to be moveable along the body to provide selective coverage of the magnets. Embodiments are described providing shear pins and spring loaded balls to hold the sleeve either over the magnets or free of the magnets. An expandable piston, moveable by action of a drop ball, is described to release the sleeve. The sleeve is arranged so that the magnets can be covered and therefore effectively inactive on run-in and during downhole operations, and uncovered to be active when pulled out of the wellbore.
摘要翻译：用于在井眼中收集铁质碎屑的磁性清洁工具和清洁井眼的方法。磁性清洁工具具有用于附接在工作串中的工具主体，支撑在工具主体上的一个或多个磁体和位于工具主体周围的套筒，该套筒布置成沿主体可移动以提供对磁体的选择性覆盖。描述了实施例，其提供剪切销和弹簧加载的球以将套管保持在磁体上或不存在磁体。描述了可通过落球的动作移动的可膨胀活塞以释放套筒。套筒被布置成使得磁体可以被覆盖并且因此在井下操作期间和在井下操作期间被有效地不起作用，并且当被拉出井眼时被揭开为有效的。

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