Method and device for determining the position of an interface in relation to a bore hole
US7259564B2 · kind B2 · utility
3Cited by
6References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Oct 6, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/047
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention concerns a method for determining the position, in a formation (1) containing at least one electrolytic liquid, of an interface (6) in relation to a bore hole (2). One stimulates at a first instant the interface (6) with an excitation signal, one detects at a second instant (t2) a response signal converted by electro-osmosis or electrokinetic coupling effect and, if appropriate, the exication signal after reflection at a third instant (t3). With the three instants and the propagation velocity of the signals, one calculates the distance between the interface (6) and the bore hole (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.