Invention Grant
- Patent Title: Floating plug pressure equalization in oilfield drill bits
- Patent Title (中): 油田钻头浮塞压力均衡
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Application No.: US13705658Application Date: 2012-12-05
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Publication No.: US08800689B2Publication Date: 2014-08-12
- Inventor: Michael B. Crawford
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Smith IP Services, P.C.
- Priority: WOPCT/US2011/064945 20111214
- Main IPC: E21B10/25
- IPC: E21B10/25 ; E21B10/24 ; E21B10/60 ; E21B10/00
Abstract:
A drill bit of the type used to drill a wellbore in the earth can comprise a bore formed in the drill bit, and a plug sealingly and reciprocably disposed in the bore, whereby the plug prevents fluid communication between sections of the bore in the drill bit. The plug can comprise a spherically-shaped member. The plug can comprise a floating plug sealingly and reciprocably disposed in the bore, whereby pressure in the different sections of the bore on respective opposite sides of the plug is substantially equalized.
Public/Granted literature
- US20130153304A1 FLOATING PLUG PRESSURE EQUALIZATION IN OILFIELD DRILL BITS Public/Granted day:2013-06-20
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