Process for selectively treating a subterranean formation...

Details Process for selectively treating a subterranean formation... Process for selectively treating a subterranean formation...

E - Fixed Constructions

21

B

166/25

E21B 43/25 (2006.01) C09K 8/84 (2006.01) E21B 43/26 (2006.01)

Patent

CA 1270188

Process for selectively treating a subterranean formation using coiled tubing without affecting or being affected by the two adjacent zones. ABSTRACT The invention consists of a new process for selectively treating a subterranean formation without affecting or being affected by the two adjacent zones (above and below). Using the invented process, the treatment fluid is injected into the formation to be treated F, at the same time as two protection fluids, whether the same or different, are injected into the two adjacent zones (above [ZS] and below [ZI]). The process can be applied even in the presence of fractures, gravel-pack and thief zones.

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