Methods and apparatus to identify layer boundaries in subterranean formations
US9110192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2010 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | May 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus to identify layer boundaries in subterranean formations are described. An example method of identifying a layer boundary of a subterranean formation includes transmitting an acoustic signal from a transmitter into a borehole of the subterranean formation and receiving the acoustic signal at a receiver coupled to the downhole tool and spaced from the transmitter. Additionally, the example method includes logging an energy value associated with the acoustic signal received by the receiver as the downhole tool is moved in the borehole and identifying a change in the logged energy value associated with an impedance change in the subterranean formation to identify the layer boundary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.