Combo hydraulic fracturing fluid concentrate having both drag reduction and sand-carrying properties
US10323177B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Oct 24, 2017 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Nov 10, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A combo hydraulic fracturing fluid concentrate, is characterized by 1) firstly preparing “water-in-water” dispersion polymer drag reducer A, which is synthesized via dispersion polymerization to obtain water-soluble macromolecular colloidal particles dispersed in an aqueous solution of inorganic salts; 2) secondly, adding a dispersion B, which is a polymeric viscosifier, having shear-thinning properties, dispersed in aqueous inorganic salt solution; wherein the percentage by weight of drag reducing agent to viscosifier dispersion B is 20-80:80-20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.