发明名称 |
ROTARY DRILL BITS WITH PROTECTED CUTTING ELEMENTS AND METHODS |
摘要 |
<p>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.</p> |
申请公布号 |
EP2113049(A1) |
申请公布日期 |
2009.11.04 |
申请号 |
EP20080728560 |
申请日期 |
2008.01.30 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
CHEN, SHILIN;KING, WILLIAM, W. |
分类号 |
E21B10/36;E21B10/55;E21B10/567;E21B10/573 |
主分类号 |
E21B10/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|