Patent Number: 6,169,058

Title: Compositions and methods for hydraulic fracturing

Abstract: A subterranean formation is treated by introducing a fracturing treatment composition comprising a polymer treatment fluid containing a dispersion of hydrophilic water swellable particles into the formation. The water swellable particles comprise synthetic polymers that are crosslinked so that they are water insoluble, but capable of swelling in the presence of relatively small amounts of water. When used with treatment fluids containing at least a small amount of water, the particles swell and reduce fluid loss to the formation during the treatment. When used during a hydraulic fracturing treatment of a hydrocarbon bearing formation, the particles may also reduce or eliminate water production following the fracturing treatment by restricting the extension of a fracture into water-bearing formations, and/or by restricting the flow of fluids from water-bearing areas.

Inventors: Le; Hoang V. (Houston, TX), Kesavan; Subramanian (The Woodlands, TX), Dawson; Jeffrey C. (Spring, TX), Mack; David J. (Edmond, OK), Nelson; Scott G. (Edmond, OK)

Assignee: BJ Services Company

International Classification: C09K 8/64 (20060101); C09K 8/60 (20060101); C09K 8/62 (20060101); C09K 8/80 (20060101); C09K 007/02 (); C09K 003/00 (); E21B 043/26 ()

Expiration Date: 01/02/2018