Downhole tomographic imaging
US10240451B2 · kind B2 · utility
1Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2014 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Jan 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/101
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tomographic imaging apparatus utilizes Compton backscattering to evaluate cement behind the casing. The imaging apparatus includes a slant-hole or pin-hole collimator coupled to a series of detectors in order to count the number of photons that backscatter off from the cement. The number of backscattered photons is proportional to the density of the cement behind the casing. Using the photon count, an image processing unit of the imaging apparatus generates a 2D or 3D tomographic image of the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.