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Methods and compositions for controlling formation fines and reducing proppant flow-back
   
Document Number
US Patent 7318474
Issued Date
January 15, 2008
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Abstract
Provided herein are methods for controlling the migration of particulates within a portion of a subterranean formation that comprise aqueous tackifying treatment fluids, curable resin compositions, and/or noncurable resin compositions.
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Number of Claims:
5
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Published
January 15, 2008
Application Number
11/178,896
Filed
July 11, 2005
US Classification
166/280.1  
Int'l Classification
E21B   43/267   (20060101)  
Examiner
Assistant Examiner
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7507693 - Viscoelastic surfactant fluid systems comprising an aromatic sulfonate and methods of using same - Owned by Schlumberger Technology Corporation (Sugar Land, TX)

Methods of improving shear recovery time of viscoelastic surfactant fluid systems are described, one method involving providing a viscoelastic surfactant fluid system comprising a major portion of a surfactant and a rheology enhancer in a concentration sufficient to shorten shear recovery time of the fluid system compared to shear recovery time of the fluid system absent the rheology enhancer, the rheology enhancer selected from aromatic sulfonates having a molecular weight of at least 500; and injecting the fluid system down a well. The rheology enhancer may be a lignosulfonate derived from wood pulping. Viscoelastic surfactant systems including the rheology enhancer are also described.

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