Fluid diversion composition in well stimulation

Patent metadata

Field	Value
Publication number	US-10883036-B2
Application number	US-201816193542-A
Country	US
Kind code	B2
Filing date	Nov 16, 2018
Priority date	Nov 28, 2017
Publication date	Jan 5, 2021
Grant date	Jan 5, 2021

Abstract

Described are methods and compositions for treating a subterranean formation. The method comprising introducing into the subterranean formation via a well-bore a diverter composition, the diverter composition comprising a combination of at least one deformable particle and at least one non-deformable particle; and allowing the diverter composition to block the flow of at least a portion of a treatment fluid from a first location within the well-bore to a second location.

First claim

What is claimed is:

1. A method for treating a subterranean formation, comprising:
introducing into the subterranean formation via a well-bore a first treatment fluid comprising a diverter composition, the diverter composition comprising:
a combination of deformable particles and non-deformable particles,

wherein the deformable particles are present from about 1 wt % to about 99 wt % of the diverter composition and wherein the deformable particles and non-deformable particles are degradable, and
wherein the deformable particles are selected from crosslinked copolymers of acrylamide, acrylate, and vinylformamide monomers; starch grafted with acrylonitrile and acrylate monomers; crosslinked polymers of two or more of allylsulfonates; 2-acrylamido-2-methyl-1-propanesulfonic acid; 3-allyloxy-2-hydroxy-1-propane-sulfonic acid, diallyl-dimethylammonium salts; benzyl-diallylmethylammonium salts; methacrylamidopropyltrimethylammonium salts, acrylamidopropyltrimethylammonium salts; and any combination thereof, and
wherein the non-deformable polymers are selected from polyesters; polyamides; polyethers; polycarbonates; polyurethanes; peptides, polypeptides; urea-formaldehyde copolymer; poly(lactic acid); polyethylene terephthalate; and combinations thereof; and
allowing the diverter composition to block the flow of at least a portion of the first treatment fluid from a first location within the well-bore diverting flow to a second location.

2. The method of claim 1 , wherein the diverter composition is present in the first treatment fluid at a concentration of 1,000 to 200,000 ppm.

3. The method of claim 1 , wherein the deformable particles are swellable particles.

4. The method of claim 1 , wherein the deformable particles comprise an average particle size range from about 0.05 microns to about 100,000 microns.

5. The method of claim 1 , wherein the non-deformable particles comprise poly(lactic acid) or polyethylene terephthalate.

6. The method of claim 1 , wherein the non-deformable particles are present from about 1 wt % to about 99 wt % of the diverter composition.

7. The method of claim 1 , wherein the non-deformable particles comprise an average particle size range from about 0.05 mm to 65 mm.

8. The method of claim 1 , wherein the non-deformable particles comprise polylactic acid.

9. The method of claim 1 , wherein the diverter composition withstands a pressure of 10 psi to 20,000 psi.

Assignees

• Championx Usa Inc

Inventors

• Dreyer Daniel
• Boyraskikh Vyacheslav
• Hu Yuntao Thomas
• Kurian Pious
• Street Joseph Paul
• Tonmukayakul Narongsak
• Chang Kin-Tai

Classifications

• C09K8/03 Primary

  Specific additives for general use in well-drilling compositions · CPC title

• E21B43/26

  by forming crevices or fractures · CPC title

• C09K8/516

  characterised by their form or by the form of their components, e.g. encapsulated material · CPC title

• C09K8/5086 Primary

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09K8/5083

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title