Equipment for remote launching of cementing plugs
US8316931B2 · kind B2 · utility
5Cited by
20References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Apr 15, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/165
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Equipment for servicing subterranean wells, and in some cases, an apparatus and method for remotely launching cementing plugs during the primary cementation of a subterranean well. The top plug and bottom plug are launched by different mechanisms, thereby preventing premature release of the top plug during a cementing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.