Data acquisition and processing system and method for investigating sub-surface features of a rock formation
US8942063B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 9, 2011 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Jul 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K15/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and a method includes generating a first signal at a first frequency; and a second signal at a second frequency. Respective sources are positioned within the borehole and controllable such that the signals intersect in an intersection volume outside the borehole. A receiver detects a difference signal returning to the borehole generated by a non-linear mixing process within the intersection volume, and records the detected signal and stores the detected signal in a storage device and records measurement parameters including a position of the first acoustic source, a position of the second acoustic source, a position of the receiver, elevation angle and azimuth angle of the first acoustic signal and elevation angle and azimuth angle of the second acoustic signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.