Well logging fluid for ultrasonic cement bond logging
US8186432B2 · kind B2 · utility
2Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2006 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Nov 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A well logging fluid, and methods of using the same, include a base fluid selected from water, water-based mud, or oil-based mud, and an additive material selected from silica or cork or alike. The fluid has an impedance substantially different from that of the base fluid. Such a modified impedance helps improve the measurement accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.