E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/17 (2006.01) C09K 8/62 (2006.01) C09K 8/64 (2006.01) C09K 8/80 (2006.01)
Patent
CA 2239599
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.
Dawson Jeffrey C.
Kesavan Subramanian
Le Hoang V.
Mack David J.
Nelson Scott G.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Bj Services Company
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