IP Library Granted Patent US 11,739,257
Granted Patent B2
US 11,739,257 · App. 17/329,673 · Granted Aug 29, 2023

Hydraulic fracturing fluid

Inventors: Donald Curtis Van Slyke (Houston, TX); Shawn Shaohua Lu (Houston, TX)
Assignee: SHELL USA, INC.
C09K8/64C09K8/604
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Quick Facts
Patent No.
US 11,739,257
App. No.
17/329,673
Granted
Aug 29, 2023
Kind
B2
Abstract

The present invention relates to a hydraulic fracturing fluid composition comprising a homogeneous non-aqueous organic phase mixture which mixture comprises a base fluid and one or more surfactants.

Claims (6)

1. An aqueous based hydraulic fracturing fluid composition comprising, based on a total amount of hydraulic fracturing fluid composition, at least 90 vol. % water and 0.2 vol. %, based on a total amount of hydraulic fracturing fluid composition, of a homogeneous non-aqueous organic phase mixture comprising 85 vol. % of a Gas-to-Liquids (GTL) synthetic paraffin having from 10 to 16 carbon atoms, a density at 15° C. according to ASTM D4052 of 767 kg/m 3 , a Saybolt colour according to ASTM D156 of +30 Min, an initial boiling point of 202° C. and a final boiling point of 256° C. according to ASTMD86, a sulphur content according to ASTM D3120 of less than 1 ppm, aromatics content according to SMS 2728 of 0.04%, a flashpoint according to ASTM D93 of 83° C., a pour point according to ASTMD97 of −39° C. and a kinematic viscosity at 40° C. according to ASTMD445 of 1.8 mm 2 /s, 12 vol. % POE (2) Oleylamine, and 3 vol. % fatty acid amine, based on the amount of the homogenous non-aqueous organic phase mixture in the hydraulic fracturing fluid composition.

2. A process to prepare a hydraulic fracturing fluid, which process comprises:

(a) blending one or more surfactants into a Gas-to-Liquids (GTL) synthetic paraffin to form a homogeneous non-aqueous organic phase mixture which comprises a base fluid and one or more surfactants; and

(b) blending the mixture of step (a) with aqueous hydraulic fracturing fluid to form a hydraulic fracturing fluid composition,

wherein the hydraulic fracturing fluid composition comprises, based on a total amount of hydraulic fracturing fluid composition, at least 90 vol. % water and 0.2 vol. %, based on a total amount of hydraulic fracturing fluid composition, of a homogeneous non-aqueous organic phase mixture comprising 85 vol. % of a GTL synthetic paraffin having from 10 to 16 carbon atoms, a density at 15° C. according to ASTM D4052 of 767 kg/m 3 , a Saybolt colour according to ASTM D156 of +30 Min, an initial boiling point of 202° C. and a final boiling point of 256° C. according to ASTMD86, a sulphur content according to ASTM D3120 of less than 1 ppm, aromatics content according to SMS 2728 of 0.04%, a flashpoint according to ASTM D93 of 83° C., a pour point according to ASTMD97 of −39° C. and a kinematic viscosity at 40° C. according to ASTMD445 of 1.8 mm 2 /s, 12 vol. % POE (2) Oleylamine, and 3 vol. % fatty acid amine, based on the amount of the homogenous non-aqueous organic phase mixture in the hydraulic fracturing fluid composition.

3. A method for applying a homogenous non-aqueous organic phase mixture to a shale surface within fractures, the method comprising dispersing a homogenous non-aqueous organic phase mixture comprising a base fluid and one or more surfactants in aqueous fracturing fluid, in a stage of hydraulic fracturing selected from a pad stage, a proppant placement stage, and combinations thereof, wherein the dispersing provides a hydraulic fracturing fluid composition comprising, based on a total amount of hydraulic fracturing fluid composition, at least 90 vol. % water and 0.2 vol. %, based on a total amount of hydraulic fracturing fluid composition, of a homogeneous non-aqueous organic phase mixture comprising 85 vol. % of a Gas-to-Liquids (GTL) synthetic paraffin having from 10 to 16 carbon atoms, a density at 15° C. according to ASTM D4052 of 767 kg/m 3 , a Saybolt colour according to ASTM D156 of +30 Min, an initial boiling point of 202° C. and a final boiling point of 256° C. according to ASTMD86, a sulphur content according to ASTM D3120 of less than 1 ppm, aromatics content according to SMS 2728 of 0.04%, a flashpoint according to ASTM D93 of 83° C., a pour point according to ASTMD97 of −39° C. and a kinematic viscosity at 40° C. according to ASTMD445 of 1.8 mm 2 /s, 12 vol. % POE (2) Oleylamine, and 3 vol. % fatty acid amine, based on the amount of the homogenous non-aqueous organic phase mixture in the hydraulic fracturing fluid composition.

Assignments (2)
CHANGE OF NAME Recorded Jun 15, 2023
From: SHELL OIL COMPANY
To: SHELL USA, INC.
Reel/Frame 064003/0610 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 29, 2021
From: VAN SLYKE, DONALD CURTIS; LU, SHAWN SHAOHUA
To: SHELL OIL COMPANY
Reel/Frame 058229/0691 →
Continuity (1)
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