发明名称 |
DISSOLVING FILTER CAKE |
摘要 |
<p>Methods are presented to induce a screenout during a subterranean formation fracturing or combined fracturing and gravel packing treatment having a viscoelastic surfactant-based carrier fluid by laying down a filter cake at least a portion of which is a base-soluble material, injecting proppant slurry, and causing hydrolysis and dissolution of the solid base-soluble material by adding base so that leak-off increases, the concentration of proppant in the fracture increases, and the proppant screens out. A method of gravel packing with a viscoelastic surfactant-based carrier fluid by laying down a filter cake at least a portion of which is a base-soluble material, injecting gravel, and causing hydrolysis and dissolution of the solid base-soluble material by adding base. Methods of slowing or accelerating the hydrolysis and dissolution are given, and addition of bridging-promoting materials is included.</p> |
申请公布号 |
WO2005047643(A1) |
申请公布日期 |
2005.05.26 |
申请号 |
WO2004IB52396 |
申请日期 |
2004.11.11 |
申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;SULLIVAN, PHILIP;BONEY, CURTIS |
发明人 |
SULLIVAN, PHILIP;BONEY, CURTIS |
分类号 |
C09K8/52;C09K8/62;C09K8/70;C09K8/74;C09K8/80;(IPC1-7):E21B37/06;E21B43/267 |
主分类号 |
C09K8/52 |
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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