US 9,809,742 B2
Hydraulic fracturing composition, method for making and use of same
Jia Zhou, Spring, TX (US); Hong Sun, Houston, TX (US); Qi Qu, Spring, TX (US); and Michael Guerin, Spring, TX (US)
Assigned to BAKER HUGHES, A GE COMPANY, LLC, Houston, TX (US)
Filed by Jia Zhou, Spring, TX (US); Hong Sun, Houston, TX (US); Qi Qu, Spring, TX (US); and Michael Guerin, Spring, TX (US)
Filed on May 7, 2013, as Appl. No. 13/888,457.
Prior Publication US 2014/0332213 A1, Nov. 13, 2014
Int. Cl. E21B 43/267 (2006.01); C09K 8/80 (2006.01); C09K 8/68 (2006.01)
CPC C09K 8/805 (2013.01) [C09K 8/685 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A process for disposing a plurality of proppant particles in a fracture, the process comprising:
disposing a hydraulic fracturing composition in a downhole environment, the hydraulic fracturing composition comprising:
a superabsorbent polymer in an expanded state and configured to break in response to a breaking condition, such that a decomposed polymer is formed from the superabsorbent polymer; the superabsorbent polymer comprising particles having a size from 50 pm to 1000 pm prior to being in the expanded state; the particles having internal crosslinks derived from ethyleneglycol diacrylate, polyethyleneglycol diacrylate, trimethylopropane trimethacrylate, ethoxylated trimethylol triacrylate, ethoxylated pentaerythritol tetracrylate, or a combination comprising at least one of the foregoing but no intra-particle crosslinks; the superabsorbent polymer including a repeat unit derived from an acrylate, an acrylamide, a vinylpyrrolidone, a vinyl acetate, a 2-acrylamide-2-methylpropanesulfonic acid, an acrylic acid salt, a derivative thereof, or a combination thereof;
a plurality of proppant particles disposed in a space between adjacent superabsorbent polymer particles prior to release of the plurality of proppant particles from the space between the adjacent superabsorbent polymer particles in response to breaking the superabsorbent polymer;
a fluid to expand the superabsorbent polymer into the expanded state; and
a breaker, the superabsorbent polymer and the breaker being selected such that the breaker reacts with the superabsorbent polymer to break a bond in a polymer chain of the super absorbent polymer, a bond in a crosslink of the superabsorbent polymer, a bond between the crosslink and the polymer chain, or a combination thereof;
forming a fracture in the downhole environment;
disposing the hydraulic fracturing composition in the fracture;
breaking the superabsorbent polymer after forming the fracture with the breaker; and
releasing the plurality of proppant particles from the space between adjacent superabsorbent polymer particles to dispose the plurality of proppant particles in the fracture;
wherein the hydraulic fracturing composition is free of a viscose polymer selected from guar; polysaccharide; xanthan gum; a derivative of starch, guar, or cellulose, and a combination thereof, and the hydraulic fracturing composition is free of a crosslinking agent.