Selective stimulation with selective water reduction

Details Selective stimulation with selective water reduction Selective stimulation with selective water reduction

2006-03-07

2006-03-07

Tucker, Philip C. (Department: 1712)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S203000, C507S269000, C507S271000, C507S277000, C166S292000, C166S294000, C166S295000

Reexamination Certificate

active

07008908

ABSTRACT:
A method for preferentially treating a subterranean formation having at least one primarily oil producing layer and at least one primarily water producing layer. The method involves the steps of providing a water shut-off gel into the formation to preferentially treat the water producing layers. This is followed by providing a viscoelastic fluid into the formation, where the viscoelastic fluid is broken by hydrocarbon, thereby remaining and viscosifying primarily in the water producing layers. Finally, a reactive fluid, such as an acid fluid, is provided. The reactive fluid treats primarily the oil producing layers because the viscoelastic fluid and the water shut-off gel prevent the reactive fluid from substantially entering the water producing layers.

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patent: 263896 (1989-01-01), None
Insights into Water Control: A Review—pp. 61-62,Journal of Petroleum Technology—Mar. 2003.
SPE 79012—New Insights into Water Control—A Review of the State of the Art—Part II by Gino Di Lullo, Phil Rae, and James Curtis.

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