Dispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterranean well drilling and completion
US5360787A · kind A · utility
15Cited by
44References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1992 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Jan 28, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/925
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dispersant for drilling fluids, spacer fluids, cement slurries, completion fluids and mixtures of drilling fluids and cement slurries used for drilling and cementing subterranean wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.