COMPOSITIONS AND METHODS FOR SERVICING SUBTERRANEAN WELLS
摘要
Disclosed are pumpable-fluid compositions and methods for establishing hydraulic isolation in cemented subterranean wells. The fluid compositions comprise solids-free solutions of water-soluble polymers. Upon entering voids and cracks in the cement sheath and contacting the set-cement surfaces, the fluid gels and forms a seal that prevents further leakage.
申请公布号
CA2769009(A1)
申请公布日期
2011.02.03
申请号
CA20092769009
申请日期
2009.07.29
申请人
SCHLUMBERGER CANADA LIMITED
发明人
PYATINA, TATIANA;KOMOCKI, SYLWIA;MICHAUX, MICHEL;JAMES, SIMON