Compositions and methods for improving proppant conductivity

Patent metadata

Field	Value
Publication number	US-2018334615-A1
Application number	US-201816049191-A
Country	US
Kind code	A1
Filing date	Jul 30, 2018
Priority date	Dec 29, 2014
Publication date	Nov 22, 2018
Grant date	—

Abstract

Compositions and methods for improving proppant conductivity are disclosed herein. The compositions can include a proppant composition for use in hydraulic fracturing, the composition containing a plurality of particulates. At least one particulate of the plurality of particulates can contain at least one nutrient. The at least one nutrient can separate from the at least one particulate located inside a fracture of a subterranean formation after a period of time.

First claim

What is claimed is:

1 . A method of hydraulic fracturing a subterranean formation, comprising:
injecting a first fluid into a subterranean formation at a rate and pressure sufficient to open a fracture therein; and injecting a second fluid comprising a proppant composition into the fracture, the proppant composition comprising:
a plurality of particulates, each particulate comprising from 0.1 wt % to 10 wt % of a nutrient, the plurality of particulates having a long term permeability measured in accordance with ISO 13503-5 at 7,500 psi of about 10 Darcies or greater.

2 . The method of claim 1 , wherein the nutrient is selected from the group consisting of proteins, carbohydrates, lipids, monocalcium phosphate, dicalcium phosphate, phosphoric acid, ammonium chloride, potassium nitrate, ammonium nitrate, urea, and nitratine, and any combination thereof.

3 . The method of claim 2 , wherein the nutrient is selected from the group consisting of ammonium chloride, potassium nitrate, ammonium nitrate, urea, and nitratine, and any combination thereof.

4 . The method of claim 1 , wherein the nutrient is selected from the group consisting of glycolipids, lipopeptides, phospholipids, fatty acids, neutral lipids, vitamin A, vitamin D, vitamin E, vitamin K, monoglycerides, diglycerides, and triglycerides, and any combination thereof.

5 . The method of claim 1 , wherein the nutrient is selected from the group consisting of monocalcium phosphate, dicalcium phosphate, and phosphoric acid, and any combination thereof.

6 . The method of claim 1 , wherein the nutrient is configured to support propagation and/or colonization of a native microorganism inside the fracture of the subterranean formation.

7 . The method of claim 1 , wherein the particulates comprise a coating selected from the group consisting of polylactic acid, water-soluble polymers, and cross-linkable water-soluble polymers, and any combination thereof.

8 . The method of claim 1 , wherein the particulates comprise a coating selected from the group consisting of phenol formaldehyde, polyurethane, cellulose ester, polyamides, vinyl esters, and epoxies, and any combination thereof.

9 . The method of claim 8 , wherein the coating is a phenol formaldehyde.

10 . The method of claim 1 , wherein the particulates comprise from about 60 wt % to about 95 wt % alumina.

11 . The method of claim 1 , wherein the particulates have an internal interconnected porosity of from about 5% to about 35%.

12 . The method of claim 1 , wherein the second fluid further comprises non-porous ceramic proppant.

13 . A hydraulic fracturing composition, comprising:
an aqueous solution; and a plurality of particulates, each particulate comprising from 0.1 wt % to 10 wt % of a nutrient, the plurality of particulates having a long term permeability measured in accordance with ISO 13503-5 at 7,500 psi of about 10 Darcies or greater.

14 . The composition of claim 13 , wherein the nutrient is selected from the group consisting of proteins, carbohydrates, lipids, monocalcium phosphate, dicalcium phosphate, phosphoric acid, ammonium chloride, potassium nitrate, ammonium nitrate, urea, and nitratine, and any combination thereof.

15 . The composition of claim 14 , wherein the nutrient is selected from the group consisting of ammonium chloride, potassium nitrate, ammonium nitrate, urea, and nitratine, and any combination thereof.

16 . The composition of claim 13 , wherein the nutrient is selected from the group consisting of glycolipids, lipopeptides, phospholipids, fatty acids, neutral lipids, vitamin A, vitamin D, vitamin E, vitamin K, monoglycerides, diglycerides, and triglycerides, and any combination thereof.

17 . The composition of claim 13 , wherein the nutrient is selected from the group consisting of monocalcium phosphate, dicalcium phosphate, and phosphoric acid, and any combination thereof.

18 . The composition of claim 13 , wherein the at least one particulate further comprises a coating selected from the group consisting of polylactic acid, water-soluble polymers, and cross-linkable water-soluble polymers and any combination thereof.

19 . The composition of claim 13 , wherein the at least one particulate further comprises a coating selected from the group consisting of phenol formaldehyde, polyurethane, cellulose ester, polyamides, vinyl esters, and epoxies, and any combination thereof.

20 . The composition of claim 19 , wherein the coating is a phenol formaldehyde.

21 . The composition of claim 13 , wherein the particulates comprise from about 60 wt % to about 95 wt % alumina.

22 . The composition of claim 13 , wherein the particulates have an internal interconnected porosity of from about 5% to about 35%.

23 . The composition of claim 13 , further comprising non-porous ceramic proppant.

Assignees

• Carbo Ceramics Inc

Inventors

• Lehman Lyle
• Cannan Chad

Classifications

• C09K8/80

  Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open · CPC title

• C09K8/68

  containing organic compounds · CPC title

• C09K8/805 Primary

  Coated proppants · CPC title