On the fly mixing of acids and diversion fluids with water-soluble retarding agents
US10954432B2 · kind B2 · utility
5Cited by
17References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2016 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Aug 31, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/27
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Described herein are methods for on the fly mixing of retarded acidizing fluids containing acid, a water-soluble acid retarding agent (RA), and optionally a viscoelastic surfactant (VES), and for on the fly mixing of diversion fluids containing VES and RA in the same equipment. Also described are methods of controlling the preparation of such fluids based on feedback composition analyses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.