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Washout of Cr(III)-Acetate-HPAM Gels From Fractures: Effect of Gel State During Placement by B.. Brattekås; S. G. Pedersen; H. T. Nistov; Å.. Haugen; A.. Graue; J. -T. Liang; R. S. Seright is a Engineering article available to read on EtoBox.

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## Summary This work investigated the blockage performance of a Cr(III)-acetate-hydrolyzed polyacrylamide (HPAM) gel after placement in open fractures, with emphasis on the effect of gel maturity during placement. Polymer gel is formed through a chemical reaction between a polymer and a crosslinking agent (in a gelant solution) that occurs during the gelation time. In field applications, gelant is generally pumped from the surface, but gelation may occur during injection because of high-temperature conditions and longer pumping times; hence, partially or fully mature gel may exit the wellbore during polymer-gel injection in a fractured reservoir. Gelation alters the solution properties significantly; hence, immature gelant and fully formed (mature) polymer gel show different behavior during placement in a fractured system, and the gels deposit differently in the fracture volume. Injection of gel at different maturities in a fracture may therefore influence the ability of the gel treatment to block fractures, and hence its performance during conformance-control operations. Placement of immature and mature gels and their ability to block fractures during subsequent waterfloods were i

Who reads Washout of Cr(III)-Acetate-HPAM Gels From Fractures: Effect of Gel State During Placement?

Author

B.. Brattekås; S. G. Pedersen; H. T. Nistov; Å.. Haugen; A.. Graue; J. -T. Liang; R. S. Seright

Publisher

Society of Petroleum Engineers (SPE)

Published

2015

Language

EN

Field

Engineering (Physical Sciences)