Methods for cementing a subterranean wellbore
US10329873B2 · kind B2 · utility
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2References
18Claims
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Key dates
| Filing date | Aug 24, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Aug 24, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for cementing a tubular member within a subterranean wellbore extending from a surface into a subterranean formation and through a hydrocarbon reservoir includes (a) injecting a gas from the surface into an annulus surrounding the tubular member within the wellbore. In addition, the method includes (b) flowing cement through a throughbore of the tubular member. Further, the method includes (c) displacing the cement from the throughbore of the tubular member into the annulus. Still further, the method includes (d) reducing a pressure of the gas in the annulus during (c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.