Storage or disposal cavern leak detection and loss prevention
US4474053A · kind A · utility
19Cited by
3References
49Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1982 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Aug 25, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An environmentally acceptable gas is provided, under pressure, in the annulus of a casing arrangement which connects a wellhead to an underground storage zone containing stored product. Monitoring of the gas permits detection of leaks that might occur through casing leakage to an unsealed overburden. Leak detection and product loss prevention can be conducted without deleterious environmental impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.