1887

Abstract

Summary

High water production in oil and gas wells reduces significantly the recovery factor. Mechanical as well as chemical methods are applied to shut-off water productive zones. Crosslinked polymers showed high efficiency to seal off water zones in high permeability sandstone and fractured carbonate reservoirs. Moreover, emulsified polymeric formulations have been introduced for deep profile modification by changing the wettability of the rock and hence allowing selective plugging of water.

The objective of this paper is to overview types of organic and inorganic crosslinked polymers suitable for water-shut off operations for low and high temperatures applications. Furthermore, it highlights the use of reinforcement materials for the developed gel such as nanosilica. Moreover, recent advancement in relative permeability modification using emulsified gels and micro-gels are presented. Finally, factors that affect the performance of the crosslinked polymers are discussed.

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/content/papers/10.3997/2214-4609.201903133
2019-11-18
2020-08-13
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