Managed pressure cementing
US9249646B2 · kind B2 · utility
23Cited by
41References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Jun 1, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/001
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of cementing a tubular string in a wellbore includes: deploying the tubular string into the wellbore; pumping cement slurry into the tubular string; launching a cementing plug after pumping the cement slurry; propelling the cementing plug through the tubular string, thereby pumping the cement slurry through the tubular string and into an annulus formed between the tubular string and the wellbore; and controlling flow of fluid displaced from the wellbore by the cement slurry to control pressure of the annulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.