Composition for oil and gas recovery
AssigneeS.P.C.M. SA
InventorCédrick Favero
Life of this patent
Estimating the term…
Abstract
Provided is a composition for preparing injection fluid in oil and gas recovery comprising an inverse emulsion of a water-soluble polymer A comprising acrylamide monomer units, and solid particles of a water-soluble polymer, wherein water-soluble polymer B is obtained by a polymerization step of at least acrylamide and 1 and 15 mol % of acrylamido tertiary butyl sulfonic acid (ATBS), and/or salts thereof, and a subsequent post treatment step of the resulting polymer. Also provided is a method of treating a portion of subterranean formation comprising providing the composition, preparing an injection fluid with at least the composition, introducing the injection fluid into portion of the subterranean formation. The composition is particularly useful to prepare fracturing fluid in fracturing operations.
Claims30
A composition for preparing an injection fluid in oil and gas recovery comprising:
- i) an inverse emulsion of a water-soluble polymer A comprising acrylamide monomer units, and
- ii) solid particles of a water-soluble polymer B, and
- wherein water-soluble polymer B is obtained by a polymerization step of at least acrylamide and 1 to 15 mol % of acrylamido tertiary butyl sulfonic acid (ATBS), and/or salts thereof, and a subsequent post treatment step of the resulting polymer.
Dependencies are inferred from the claim text.