发明名称 |
Floating plug pressure equalization in oilfield drill bits |
摘要 |
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. |
申请公布号 |
AU2011383300(A1) |
申请公布日期 |
2014.07.31 |
申请号 |
AU20110383300 |
申请日期 |
2011.12.14 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
CRAWFORD, MICHEAL B. |
分类号 |
E21B10/22;E21B10/18;E21B10/24;E21B10/60 |
主分类号 |
E21B10/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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