Compositions of and methods for using hydraulic fracturing fluid for petroleum production

Patent metadata

Field	Value
Publication number	US-10619089-B2
Application number	US-201715800999-A
Country	US
Kind code	B2
Filing date	Nov 1, 2017
Priority date	Nov 19, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A hydraulic fracturing fluid for use in oilfield applications, where hydraulic fracturing fluid includes a spherical bead-forming liquid composition, the spherical bead-forming liquid composition comprising a micellar forming surfactant, a bead-forming compound, a non-solids bearing liquid solvent, a pH control agent, and a curing agent.

First claim

What is claimed is:

1. A hydraulic fracturing fluid formulation for use in oilfield applications, the hydraulic fracturing fluid formulation comprising:
a primary liquid precursor; and
a secondary liquid precursor,
where a mixture of the primary liquid precursor and the secondary liquid precursor forms solid, individual, spherical beads in situ in a hydrocarbon-bearing reservoir upon mixing, and
where the solid, individual, spherical beads are formed from non-solids bearing liquids and are of sufficient mechanical strength to act as a proppant in situ and hold fractures open against an overburden pressure.

2. The formulation of claim 1 , where the primary liquid precursor comprises a micellar forming surfactant.

3. The formulation of claim 2 , where the micellar forming surfactant is selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants and combinations thereof.

4. The formulation of claim 1 , where the primary liquid precursor comprises a bead-forming compound.

5. The formulation of claim 4 , where the bead-forming compound is selected from the group consisting of bis-phenol A, bis-phenol F, cycloaliphatic epoxides, glycidyl ethers, poly glycidyl ethers, novalac resins, polyurethane resins, acrylic resin, phenol-formaldehyde resin, epoxy functional resins, and combinations thereof.

6. The formulation of claim 1 , where the primary liquid precursor comprises a non-solids bearing liquid solvent.

7. The formulation of claim 6 , where the non-solids bearing liquid solvent is selected from the group consisting of water, brine containing mono and polyvalent salt, sea water, mineral oil, kerosene, diesel, crude oil, and petroleum condensate, low molecular weight alcohols, low molecular weight alcohol ethers, benzyl alcohol, and benzyl alcohol ethers, ethyl carbitol ether, γ-butyrolactone, phenol alkoxylates, alkylphenol alkoxylates, and combinations thereof.

8. The formulation of claim 1 , where the primary liquid precursor comprises an anti-foaming agent.

9. The formulation of claim 1 , where the primary liquid precursor comprises a pH control agent.

10. The formulation of claim 9 , where the pH control agent is selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium aluminate, potassium carbonate, potassium phosphate, sodium silicate, potassium silicate, organic acids, and combinations thereof.

11. The formulation of claim 1 , where the primary liquid precursor comprises a retarder.

12. The formulation of claim 1 , where the secondary liquid precursor comprises a curing agent.

13. The formulation of claim 12 , where the curing agent is selected from the group consisting of lewis acids, tertiary amines, mono ethanol amine, benzyl dimethylamine, 1,4-diaza-bicylo [2,2,2] octane, 1,8-diazabicylo [5,4,0] undec-7ene, cycloaliphatic amines, amidoamines, aliphatic amines, aromatic amines, isophorone, isophorone diamine, polyamides, boron tri-fluoride derivatives, functional resins, imidazoles, imidazolines, mercaptans, sulfide, hydrazides, amides and their derivatives.

14. The formulation of claim 1 , where the secondary liquid precursor comprises a co-curing agent.

15. The formulation of claim 14 , where the co-curing agent is selected from the group consisting of water, fatty acids, such as oleic acid, tall oil fatty acid, ricinoleic acid, benzoic acid, salicylic acid, stearic acid as well as alkoxylated alcohols, dicarboxylic acids, carboxylic acids, imidazolines, dicyandiamides, ureas, imidazoles, thiols, aliphatic polyamines, cycloaliphatic polyamides, cycloaliphatic dicarboxylic acid anhydrides, imidazoline salts, dicyandamides, phenols and alkylphenol s.

16. The formulation of claim 1 , where the secondary liquid precursor comprises a retarder.

17. The formulation of claim 1 , where upon initial mixing of the primary liquid precursor and the secondary liquid precursor, the mixture is a non-solids bearing homogenous liquid.

18. The formulation of claim 1 , where the mixture has a liquid viscosity from about 20 centipoise (cp) to about 80 cp.

Assignees

• Saudi Arabian Oil Co
• Oil Chem Tech

Inventors

• Chang Fakuen Frank
• Berger Paul D
• Lee Christie H

Classifications

• C09K8/68

  containing organic compounds · CPC title

• E21B43/267

  reinforcing fractures by propping · CPC title

• C09K8/86

  containing organic compounds · CPC title

• C09K8/64 Primary

  Oil-based compositions · CPC title

• C09K8/602

  containing surfactants · CPC title