Fast formation dip angle estimation systems and methods
US10087744B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2013 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Jan 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Tools, systems and methods for fast formation dip angle estimation, at least some of which include a logging tool that includes at least one transmit antenna, at least one receive antenna and a controller. The controller measures coupling parameters between the transmit and receive antennas, with at least one of the coupling parameters being measured as a function of depth and azimuthal angle. The controller further determines if a surrounding formation is anisotropic and heterogeneous based at least in part on at least one of the coupling parameters, and if so, derives a dip angle from a partial derivative with respect to depth and artificial dip angle of the coupling parameter(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.