发明名称 |
METHODS FOR REMOVING RESIDUAL POLYMER FROM A HYDRAULIC FRACTURE |
摘要 |
Viscoelastic surfactant (VES) gelled aqueous fluids containing water, a VES in an amount effective to increase the viscosity of the water, and an internal breaker may be useful in removing a residual polymer from a hydraulic fracture. Optionally, a pseudo-crosslinker may be present to further improve the properties related to treatment fluid placement and polymer clean-up. A plurality of aliquots of VES gelled fluid may be injected into a subterranean formation. A stop-start interval may exist between the injection of each aliquot. The VES gelled fluid may contact at least some of the residual polymer in the hydraulic fracture, and a broken fluid is formed once the viscosity of the VES gelled fluid is reduced with the internal breaker. At least a portion of the residual polymer and a majority of the broken fluid may be removed. |
申请公布号 |
WO2013106059(A3) |
申请公布日期 |
2013.09.12 |
申请号 |
WO2012US32913 |
申请日期 |
2012.04.10 |
申请人 |
BAKER HUGHES INCORPORATED;CREWS, JAMES, B.;HUANG, TIANPING |
发明人 |
CREWS, JAMES, B.;HUANG, TIANPING |
分类号 |
C09K8/588;E21B43/22 |
主分类号 |
C09K8/588 |
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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