Block copolymers for recovering hydrocarbon fluids from a subterranean reservoir
First Claim
1. A composition comprising:
- cross linked expandable polymeric microparticles comprising unexpanded volume average particle size diameters of about 0.05 to about 5,000 microns and cross linking agent contents of about 100 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, wherein the expandable polymeric microparticles have a block copolymer structure comprising at least two different monomers having different chemical structures.
6 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure is directed to compositions and methods that may be used for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. The compositions may include, for example, expandable cross-linked polymeric microparticles having unexpanded volume average particle size diameters of from about 0.05 to about 5,000 microns and cross linking agent contents of from about 100 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, wherein the expandable polymeric monomers have a block copolymer structure comprising at least two different monomers having different chemical structures.
-
Citations
20 Claims
-
1. A composition comprising:
cross linked expandable polymeric microparticles comprising unexpanded volume average particle size diameters of about 0.05 to about 5,000 microns and cross linking agent contents of about 100 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, wherein the expandable polymeric microparticles have a block copolymer structure comprising at least two different monomers having different chemical structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification