# US 2014/0155303 A1 · Zero-leakoff gel

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- Number: US 2014/0155303 A1
- Document ID: US20140155303A1
- Status: Published application
- Kind: A1
- Application number: 14/175,205
- Filed: 2014-02-07
- Published: 2014-06-05
- Earliest claimed: 2010-08-23
- Assignees: Saudi Arabian Oil Company
- Applicants: Saudi Arabian Oil Company
- Inventors: Saleh Haif Al-Mutairi; Ali Dahmal Al-Aamri; Khalid A. Al-Dossary; Mubarak Auodah AI-Dhufairi
- Web page: https://patentgrep.com/patent/US20140155303A1

## CPC

- C09K 8/92: characterised by their form or by the form of their components, e.g. encapsulated material (C09K8/70 takes precedence)
- C09K 8/50: Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls (compositions for consolidating loose sand or the like around wells C09K8/56)
- C09K 8/78: for preventing sealing
- E21B 43/27: by use of eroding chemicals, e.g. acids
- C09K 2208/14: Double emulsions, i.e. oil-in-water-in-oil emulsions or water-in-oil-in-water emulsions
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A silicate gel composition that is useful for sealing the face of a fracture of a formation. A method of sealing a face of a fracture of a formation with the silicate gel composition and diverting an acid treatment fluid.

## Claims

### Claim 1

A silicate gel composition useful for sealing the face of a fracture of a formation that is operable to form a sealing layer upon and adhere to the face on the formation and is operable to maintain a maximum differential pressure value of at least about 50 pounds-per-square-inch-differential (psid) across the sealing layer while upon the face of the formation.

### Claim 2 (depends on 1)

The silicate gel composition of claim 1 where the silicate gel composition is operable to maintain a maximum differential pressure value in a range of from about 50 to about 700 psid across the sealing layer.

### Claim 3 (depends on 1)

The silicate gel composition of claim 1 where the silicate gel composition is operable to maintain a maximum differential pressure value in a range of from about 600 to about 700 psid across the sealing layer.

### Claim 4 (depends on 1)

The silicate gel composition of claim 1 where the silicate gel composition is operable to deny penetration of a fluid through the sealing layer of silicate gel composition when the fluid has a hydrochloric acid concentration of less than about 20 weight percent of the fluid.

### Claim 5 (depends on 4)

The silicate gel composition of claim 4 where the silicate gel composition is operable to permit penetration of a fluid through the sealing layer when the fluid has a hydrochloric acid concentration greater than about 20 weight percent of the fluid.

### Claim 6 (depends on 1)

The silicate gel composition of claim 1 where the silicate gel composition is operable to break upon introduction of a mixture comprising:
hydrochloric acid;
a mutual solvent to the silicate gel composition and water; and
water.