Method for determination of fracture closure pressure
US4372380A · kind A · utility
20Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1981 |
| Grant date | Feb 8, 1983 |
| Priority date | — |
| Expiry date | Feb 27, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of determining the minimum in-situ stress of an underground formation penetrated by a well. The method includes injecting a fluid at a certain rate into the formation to produce fractures in the formation, backflowing the injected fluid from the well at a rate less than the injection rate, and measuring the well fluid pressure decrease during the backflow to establish the pressure at which the fractures close.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.