Apparatus for determining horizontal and/or vertical permeability of an earth formation
US5279153A · kind A · utility
49Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1991 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Aug 30, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus for obtaining horizontal and/or vertical permeability measurements through a probe having an elongate aperture. The invention uses the elongate aperture in the probe to orient fluid flow in an earth formation horizontally or vertically. The elongate aperture is approximated through the use of a single elongate opening or through the use of a group of aligned openings of varying shapes. Measurements can be taken at different orientations by including additional probe openings along more than one axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.