发明名称 |
Rotary Drill Bits with Protected Cutting Elements and Methods |
摘要 |
A rotary drill bit with cutting elements operable to control depth of cut and rate of penetration during formation of a wellbore are provided. Respective sets of secondary cutting elements and primary cutting elements may also be disposed on exterior portions of a rotary drill bit. A number of blades may extend from exterior portions of the drill bit with a number of cutting elements disposed on exterior portions of each blade. Each cutting element may include a substrate with a cutting surface disposed thereon. A respective protector may extend from the cutting surface of one or more cutting elements to limit depth of penetration of the associated cutting element into adjacent portions of a downhole formation and/or to control rate of penetration of an associated rotary drill bit.
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申请公布号 |
US2010000800(A1) |
申请公布日期 |
2010.01.07 |
申请号 |
US20080525249 |
申请日期 |
2008.01.30 |
申请人 |
CHEN SHILIN;KING WILLIAM W |
发明人 |
CHEN SHILIN;KING WILLIAM W. |
分类号 |
E21B10/567;E21B10/42;E21B10/55;G06F17/50 |
主分类号 |
E21B10/567 |
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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