Crosslinked guar based blocking gel system for use at low to high temperatures
US5547026A · kind A · utility
31Cited by
21References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Apr 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/925
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
High temperature blocking gel is shown for temporary workover operations. The blocking gel is prepared by blending a guar or derivatized guar polymer with an aqueous fluid. The mixing method employed mixes and pumps the guar polymer essentially unhydrated. The resulting lower viscosity minimizes friction pressure during placement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.