Differential energy acoustic measurements of formation characteristic
US4888740A · kind A · utility
28Cited by
9References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1986 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | May 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for acoustically investigating characteristics of formations penetrated by a borehole such as fractures by taking differential Stoneley wave acoustic energy measurements between pairs of receivers of an array of receivers carried by a logging tool. The receivers of each pair all have the same spacing. The energy is that detected by the receivers in response to acoustic pulses generated by a transmitter spaced from the receivers on the tool. The differential energy measurements are stacked to obtain a stacked differential energy log.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.