Mud suspension control system
US5975220A · kind A · utility
18Cited by
43References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | May 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/925
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A drilling fluid additive for controlling solids comprising a carrageenan material, such as iota or kappa carrageenan. The drilling fluid additive may be used with other additives, such as a polyacrylate dispersant. Among other things, the drilling fluid additive may be used to drill deviated or horizontal wells, or wells having large diameter boreholes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.