Method of forming and using high density particulate slurries for well completion
US5095987A · kind A · utility
129Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1991 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Jan 31, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of preparing high density particulate slurries is provided whereby slurries containing in excess of 23 pounds of particulate per gallon of fluid can be introduced into a subterranean formation. In accordance with the method, a viscosified pad fluid is introduced into a wellbore to create a filter cake in a desired zone within a subterranean formation. The high density slurry then is introduced into the formation to substantially fill any annular space present without significant settling. This permits the coating of the entire exterior surface of highly deviated casing exposed within a wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.