Cementing in deep water offshore wells
US6244343A · kind A · utility
108Cited by
33References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/473
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved method of cementing casing in a deep water offshore formation penetrated by a well bore comprising the steps of preparing a foamed cement composition comprised of calcium aluminate cement, a set accelerating additive, a thickening time increasing additive, water, a gas, and a mixture of foam forming and foam stabilizing surfactants; placing the cement composition in the annulus between the casing and well bore; and allowing the cement composition to set into a hard impermeable mass therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.