Invention Grant
- Patent Title: Apparatus and methods for restricting flow in a bore
- Patent Title (中): 用于限制孔中流动的装置和方法
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Application No.: US13866650Application Date: 2013-04-19
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Publication No.: US09140093B2Publication Date: 2015-09-22
- Inventor: Daniel Ford , James Fogg
- Applicant: Weatherford/Lamb, Inc.
- Applicant Address: US TX Houston
- Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
- Current Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
- Current Assignee Address: US TX Houston
- Agency: Blank Rome LLP
- Priority: GB1017914.1 20101022
- Main IPC: E21B33/06
- IPC: E21B33/06 ; E21B34/06 ; E21B34/02 ; E21B34/10
Abstract:
Apparatus (10) for restricting a flow of fluid through a bore (14) comprises a bore sealing member (12a) and an actuation assembly for moving the bore sealing member (12a) between first and second configurations. The actuation assembly is configured to isolate first and second end portions (46, 48) of the activation member (12a) from a bore fluid (50). The apparatus (10) provides for moving the bore sealing member (12a) between the first and second configurations without a bore fluid (50) pressure acting on an end portion (46, 48) of the activation member (12a).
Public/Granted literature
- US20130228342A1 Apparatus and Methods for Restricting Flow in a Bore Public/Granted day:2013-09-05
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