Method of treating well with foamed composition
US7475730B2 · kind B2 · utility
7Cited by
10References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2007 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Mar 10, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/524
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The annular surface between the tubing and casing of an oil or gas well may be contacted with a foamed well treatment composition containing a gas, a foaming agent and a liquid well treatment agent, such as a scale inhibitor, corrosion inhibitor, salt inhibitor, scale remover or biocide. The foam, upon destabilization, renders a thin film of concentrated well treatment agent on the external surfaces of the tubing, inside the casing and in the perforations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.