Controlling pressure and static charge build up within an annular volume of a welllbore
US7510005B2 · kind B2 · utility
6Cited by
23References
56Claims
0Family size
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Key dates
| Filing date | Dec 21, 2007 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Dec 21, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid comprising at least one polymerizable monomer and at least one antistatic agent to control build up of static charge. The second fluid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.