Systems and methods for cement evaluation
US10378341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2014 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Apr 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/306
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Systems, methods, and devices for evaluating proper cement installation in a well are provided. In one example, a method includes receiving acoustic cement evaluation data having a first parameterization. At least a portion of the entire acoustic cement evaluation data may be corrected to account for errors in the first parameterization, thereby obtaining corrected acoustic cement evaluation data. This corrected acoustic cement evaluation data may be processed with an initial solid-liquid-gas model before performing a posteriori refinement of the initial solid-liquid-gas model, thereby obtaining a refined solid-liquid-gas model. A well log track-indicating whether a material behind the casing is a solid, liquid, or gas—may be generated by processing the corrected acoustic cement evaluation data using the refined solid-liquid-gas model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.