Methods and compositions for forming permeable cement sand screens in well bores
US6202751A · kind A · utility
148Cited by
16References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2000 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jul 28, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and compositions for forming permeable cement sand screens in well bores are provided. The compositions are basically comprised of a hydraulic cement, an acid soluble particulate solid, a liquid hydrocarbon solvent soluble particulate solid, a particulate cross-linked gel containing an internal breaker which after time causes the gel to break into a liquid, water present in an amount sufficient to form a slurry, a gas present in an amount sufficient to form a foam and a mixture of foaming and foamed stabilizing surfactants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.