Acoustic logging method for determining the dip angle and dip direction of a subsurface formation fracture
US4962490A · kind A · utility
28Cited by
6References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 18, 1990 |
| Grant date | Oct 9, 1990 |
| Priority date | — |
| Expiry date | Jan 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/44
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A deviated borehole penetrating a subsurface formation and intersected by a formation fracture is surveyed with a borehole televiewer acoustic logging system. Relative fracture dip angle and dip direction calculated from such survey with respect to the borehole axis is transformed into a true fracture dip angle and dip direction with respect to the vertical of the earth's coordinate system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.