Fluid loss control agents and compositions for cementing oil and gas wells comprising said fluid loss control agent
US8962710B2 · kind B2 · utility
2Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2005 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
It is proposed a new fluid loss control agent useful for the cementation of oil or gas wells. This fluid loss control agent consists of a mixture of a styrene-butadiene latex and a high molecular weight water-soluble polymer such as a copolymer AMPS-Am. The addition of the water-soluble polymer allows drastic reduction of the quantity of latex required to achieve fluid loss control performance and even gas migration control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.