发明名称 |
MULTIPLE BALL-BALL SEAT FOR HYDRAULIC FRACTURING WITH REDUCED PUMPING PRESSURE |
摘要 |
A downhole isolation tool including a sub, a sleeve disposed in the sub, and a ball seat mandrel coupled to the sleeve, the ball seat mandrel having at least two ball seats axially aligned with at least two throughbores disposed within the ball seat mandrel. A method of isolating a well, the method including running a downhole isolation system into a well, wherein the downhole isolation system includes a first downhole isolation tool, the first downhole isolation tool including a first sub, a first sleeve disposed in the sub, and a first ball seat mandrel coupled to the first sleeve, the first ball seat mandrel having at least two ball seats of a first size axially aligned with at least two throughbores disposed within the first ball seat mandrel, dropping at least two balls of a first size into the well, and seating the at least two balls of the first size in the at least two ball seats of the first ball seat mandrel. |
申请公布号 |
WO2012003419(A3) |
申请公布日期 |
2012.03.08 |
申请号 |
WO2011US42739 |
申请日期 |
2011.07.01 |
申请人 |
SMITH INTERNATIONAL, INC.;BOSCAN, JOSE, HURTADO;SHKURTI, PIRO;WOLF, JOHN, C. |
发明人 |
BOSCAN, JOSE, HURTADO;SHKURTI, PIRO;WOLF, JOHN, C. |
分类号 |
E21B43/26;E21B43/267 |
主分类号 |
E21B43/26 |
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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