Well completion clean-up fluids and method for cleaning-up drilling and completion filtercakes
US6263967A · kind A · utility
18Cited by
7References
10Claims
0Family size
Inventors
Key dates
| Filing date | Jun 9, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Jun 9, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for cleaning-up drilling and completion fluid filtercakes using an aqueous wash containing water and cationic salts of polyaminocarboxylic acids at neutral or acidic pH.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.