Method for scale inhibitor squeeze application to gas and oil wells
US5655601A · kind A · utility
15Cited by
25References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1995 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | Oct 5, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/528
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for inhibiting scale formation in an oil or gas well is provided. Specifically, the method is a novel "squeeze" application. The squeeze comprises injecting three solutions into the oil or gas well: (1) the preflush solution, (2) the pill solution, and (3) the overflush solution. After the injection of the three solutions, the well is shut-in for about 24 to about 48 hours. The squeeze application is useful regardless of whether the mechanism for inhibitor fixation is adsorption or precipitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.