Single well system for mapping sources of acoustic energy
US5747750A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1994 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Aug 31, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/52
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for determining the location of the source of seismic energy around a well are provided. Multiple seismic receivers, each receiver having orthogonal seismic sensors, are axially spaced on a tool which is capable of sending real-time seismic signals to the surface over conventional wireline. A method for calculating the location with respect to the receivers is also provided, the method employing data from all the sensors and a performance function to minimize error in the determination of location, and a simplified method is provided for determining if a fracture has extended past a selected depth in a formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.