Method of treating flow conduits and vessels with foamed composition
US7918281B2 · kind B2 · utility
4Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2009 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The annular surface between the tubing and casing of an oil or gas well as well as flow conduits and vessels may be contacted with a foamed treatment composition containing a gas, a foaming agent and a treatment agent. The treatment agent may be an inhibitor or removal agent for scales, corrosion, salts, paraffins or asphaltenes. The foam, upon destabilization, renders a thin film of concentrated treatment agent on the external surfaces of the tubing, inside the casing and in the perforations of the oil or gas well or on the flow conduits or vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.