Target-oriented process for estimating fracture attributes from seismic data
US10386514B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2015 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jun 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/646
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method for characterizing a subterranean formation includes: obtaining azimuth-dependent observed travel-times from measured seismic data; inverting observed travel-times to calculate a fracture attribute selected from the group consisting of: magnitude and orientation; identifying presence of fracture based on calculated fracture magnitude; identifying fracture direction based on calculated fracture orientation; calculating predicted travel-times; calculating differences or residual errors between observed travel-times and predicted travel-times; identifying potential fault locations based on residual errors; inverting fracture magnitude and orientation using travel-time differences between a shallower horizon to a deeper horizon of interest to minimize overburden artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.