Method of treating a subterranean formation with an oil-based composition containing a polysaccharide-based water-superabsorbent material
AssigneeBJ Services Company
InventorsXiaolan Wang, Qi Qu
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Abstract
A well treating composition containing a polysaccharide-based water-superabsorbent material has particularly applicability as a thermal insulating, fracturing or acid stimulation fluid. The water-superabsorbent material is capable of absorbing, at a minimum, its own weight. Particularly effective are biodegradable materials containing guar gum and carrageenan. The composition may further contain a crosslinking agent, brine and/or a viscosifying polymer or a gelling agent. As an oil-based fluid, the crosslinking agent is absorbed onto the water-superabsorbent material and serves to effectively delay crosslinking.
Claims21
A method for enhancing the productivity of a formation comprising introducing into the formation an oil-based composition comprising a polysaccharide-based water-superabsorbent material, a crosslinking agent absorbed onto the superabsorbent material and a gelling agent.
A method of fracturing a subterranean formation comprising introducing into the formation for a time and at a pressure sufficient to fracture the formation a pumpable oil-based composition comprising a polysaccharide-based water-superabsorbent material, a crosslinking agent absorbed onto the superabsorbent material and a gelling agent.
Dependencies are inferred from the claim text.