Methods for improving the productivity of oil producing wells
AssigneesBoard of Regents, The University of Texas System, 3M Innovative Properties Company
InventorsGary A. Pope, Jimmie R. Baran, Jr., Vishal Bang, Mukul M. Sharma
Life of this patent
Estimating the term…
Abstract
Methods for treating clastic formations bearing brine and at least one of black oil or volatile oil using a composition containing a nonionic polymer and solvent. The solvent at least one of solubilizes or displaces at least one of brine or oil in the clastic formation. Methods for treating a formation having at least one fracture using a composition containing a nonionic polymer and solvent. Methods for making a composition for treating a clastic formation bearing brine and at least one of black oil or volatile oil.
Claims20
A method of treating a formation bearing oil and brine, the method comprising:
- contacting the formation with a composition comprising solvent and a nonionic polymer, wherein the nonionic polymer comprises:
- at least one divalent unit represented by formula:
- and
- a poly(alkyleneoxy) segment;
- wherein
- Rf represents a perfluoroalkyl group having from 1 to 8 carbon atoms;
- R and R2 are each independently hydrogen or alkyl of 1 to 4 carbon atoms;
- and
- n is an integer from 2 to 10;
- wherein the solvent at least one of at least partially solubilizes or at least partially displaces at least one of the oil or the brine in the formation, wherein the oil is at least one of black oil or volatile oil, and wherein the formation has at least one of an oil permeability or a fracture conductivity that is increased after the composition contacts the formation.
A method of making a composition, the method comprising:
- selecting a geological zone of a formation bearing at least one of black oil or volatile oil, the geological zone having a temperature, a hydrocarbon composition, and a brine composition;
- receiving data comprising the temperature, the hydrocarbon composition, and the brine composition of the geological zone of the formation;
- generating a formulation comprising a nonionic polymer and solvent, wherein the nonionic polymer comprises at least one divalent unit represented by formula:
- and
- a poly(alkyleneoxy) segment;
- wherein
- Rf represents a perfluoroalkyl group having from 1 to 8 carbon atoms;
- R and R2 are each independently hydrogen or alkyl of 1 to 4 carbon atoms;
- and
- n is an integer from 2 to 10;
- wherein the formulation is generated based at least in part on compatibility information concerning the nonionic polymer, the solvent, the temperature, and at least one of the hydrocarbon composition or the brine composition of the geological zone of the formation;
- and
- making the composition according to the formulation.
Dependencies are inferred from the claim text.