Downhole measurements using very short fractures
US5165276A · kind A · utility
18Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Dec 4, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of performing small scale micro hydraulic fracturing in which fluid is pumped into the test interval until the initiation of a fracture is indicated, immediately after which fluid is pumped out of the interval so as to prevent propagation of the fracture and allow closure thereof, the portion then being repressurized by pumping fluid back in. By pumping out when the fracture is initiated, propagation is substantially prevented allowing estimation of the fracture length and toughness to be obtained and the time taken for the measurement reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.