Weight materials for use in cement, spacer and drilling fluids
US9062241B2 · kind B2 · utility
10Cited by
155References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2010 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Apr 11, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A drilling fluid, spacer fluid and cementing compositions for use in subterranean wells are disclosed along with methods for making using same, where the compositions include a weighting system having an effective amount of a metal silicon alloy, mixtures of metal silicon alloys, or mixtures of metal silicon alloys and conventional weighting agents, to produce compositions having a desired high density, while retaining other fluid properties such as pumpability, gas tight sealing, low tendency to segregate, and reduced high temperature cement strength retrogression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.