# US 10,309,207 B2 · Methods of controlling well bashing

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- Number: US 10,309,207 B2
- Document ID: US10309207B2
- Status: Granted
- Kind: B2
- Application number: 15/752,115
- Filed: 2015-10-02
- Published: 2018-08-23
- Granted: 2019-06-04
- Earliest claimed: 2015-10-02
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Ubong Inyang; Dipti Singh
- Web page: https://patentgrep.com/patent/US10309207B2

## CPC

- E21B 43/261: {Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation}
- C09K 8/512: containing cross-linking agents
- C09K 8/5756: {containing cross-linking agents}
- E21B 33/13: Methods or devices for cementing, for plugging holes, crevices or the like
- E21B 43/26: by forming crevices or fractures
- E21B 43/305: {comprising at least one inclined or horizontal well}
- E21B 43/267: reinforcing fractures by propping
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

Methods of preventing or minimizing communication between adjacent wells include providing a treatment fluid including a conformance chemical, a diverting agent, and a hydraulic cement, introducing the treatment fluid into a first well adjacent a second well, allowing the conformance chemical, the diverting agent, and the hydraulic cement to block fractures in the first well to prevent or minimize communication between the first well and the second well, stimulating the second well after blocking the fractures, and recovering a formation fluid from the first well, the second well, or both.

## Claims

### Claim 1

A method of preventing or minimizing communication between adjacent wells comprising:
providing a pre-pad fluid comprising a diverting agent; a silica gel; a hydraulic cement; and a conformance chemical selected from a monomer, a non-crosslinked polymer, a crosslinkable polymer system, a resin, and a silicate;
introducing the pre-pad fluid into a first well adjacent a second well;
providing a pad fluid comprising the conformance chemical, the diverting agent, the silica gel, and the hydraulic cement;
introducing the pad fluid into the first well at a rate and pressure sufficient to initiate or extend a fracture in the first well after introducing the pre-pad fluid;
allowing the conformance chemical, the diverting agent, the silica gel, and the hydraulic cement to block fractures in the first well and thereby preventing or minimizing communication between the first well and the second well; and
recovering a formation fluid from the first well, the second well, or both.

### Claim 2 (depends on 1)

The method of claim 1, further comprising drilling the first well earlier than the second well.

### Claim 3 (depends on 1)

The method of claim 1, wherein the conformance chemical comprises the crosslinkable polymer system.

### Claim 4 (depends on 3)

The method of claim 3, wherein the crosslinkable polymer system comprises (a) a copolymer of (1) an acrylamide-containing polymer or carboxylate-containing polymer and (2) a polymerizable water-soluble monomer, and (b) an organic cross-linking agent or polyvalent metal ion.

### Claim 5 (depends on 1)

The method of claim 1, wherein the diverting agent comprises a degradable polymer.

### Claim 6 (depends on 5)

The method of claim 5, wherein the degradable polymer comprises polylactide or polylactic acid.

### Claim 7 (depends on 1)

The method of claim 1, wherein the step of allowing the conformance chemical, the diverting agent, the silica gel, and the hydraulic cement to block fractures in the first well comprises stopping a fracturing operation of the first well and allowing time for the conformance chemical, the diverting agent, the silica gel, and the hydraulic cement to set and seal fractures in the first well that lead to the second well.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
providing a slurry fluid comprising the conformance chemical, the diverting agent, the hydraulic cement, and proppant particles; and
introducing the slurry fluid into the first well after the pre-pad fluid and the pad fluid to hold the fracture open.

### Claim 9

A method of preventing or minimizing communication between adjacent wells comprising:
mixing a diverting agent; a silica gel; a hydraulic cement; and a conformance chemical selected from a monomer, a non-crosslinked polymer, a crosslinkable polymer system, a resin, and a silicate with a fluid to form a pre-pad fluid and a pad fluid;
introducing the pre-pad fluid and then the pad fluid into a first well adjacent a second well, wherein the first well was drilled later than the second well and the pad fluid is introduced into the first well at a rate and pressure sufficient to initiate or extend a fracture in the first well;
introducing a flush fluid, after introducing the pad fluid, into the first well;
allowing the conformance chemical, the diverting agent, the silica gel, and the hydraulic cement to block fractures in the first well and thereby preventing or minimizing communication between adjacent fractures in the first well and the second well; and
recovering a formation fluid from the first well, the second well, or both.

### Claim 10 (depends on 9)

The method of claim 9, wherein the conformance chemical comprises the crosslinkable polymer system.

### Claim 11 (depends on 10)

The method of claim 10, wherein the crosslinkable polymer system comprises (a) a copolymer of (1) acrylamide-containing polymer or carboxylate-containing polymer and (2) polymerizable water-soluble monomer, and (b) an organic cross-linking agent or polyvalent metal ion.

### Claim 12 (depends on 9)

The method of claim 9, wherein the diverting agent comprises a degradable polymer.

### Claim 13 (depends on 12)

The method of claim 12, wherein the degradable polymer comprises polylactide or polylactic acid.

### Claim 14 (depends on 9)

The method of claim 9, further comprising:
introducing the pre-pad fluid into the second well; and
allowing the conformance chemical, the diverting agent, the silica gel, and the hydraulic cement to block fractures in the second well to prevent or minimize communication between the first well and the second well.

### Claim 15 (depends on 9)

The method of claim 9, further comprising:
mixing the conformance chemical, the diverting agent, the hydraulic cement, and proppant particles with fluid to form a slurry fluid; and
introducing the slurry fluid into the first well after introducing the pre-pad fluid and the pad fluid.

### Claim 16

A method of preventing or minimizing communication between adjacent wells comprising:
providing a pre-pad fluid comprising a crosslinkable water soluble polymer, a hydraulic cement, a silica gel, and a degradable polymer;
introducing the pre-pad fluid into a first well adjacent a second well, wherein the first well was drilled later than the second well;
providing a pad fluid comprising the crosslinkable water soluble polymer, the hydraulic cement, the silica gel, and the degradable polymer;
introducing the pad fluid into the first well at a rate and pressure sufficient to initiate or extend a fracture in the first well after introducing the pre-pad fluid;
allowing the crosslinkable water soluble polymer, the hydraulic cement, the silica gel, and the degradable polymer to block fractures in the first well and thereby preventing or minimizing communication between the first well and the second well; and
recovering a formation fluid from the first well, the second well, or both.

### Claim 17 (depends on 16)

The method of claim 16, wherein the crosslinkable water soluble polymer comprises a copolymer of acrylamide and t-butyl acrylate.

### Claim 18 (depends on 16)

The method of claim 16, wherein the degradable polymer comprises polylactide or polylactic acid.

### Claim 19 (depends on 16)

The method of claim 16, further comprising:
introducing, by a pump, the pre-pad fluid into the second well; and
allowing the crosslinkable water soluble polymer, the hydraulic cement, the silica gel, and the degradable polymer to block fractures in the second well to prevent or minimize communication between the first well and the second well.

### Claim 20 (depends on 16)

The method of claim 16, further comprising:
providing a slurry fluid comprising the crosslinkable water soluble polymer, the hydraulic cement, the degradable polymer, and proppant particles; and
introducing the slurry fluid into the first well after introducing the pre-pad fluid and the pad fluid to hold open the fracture.
