Systems and methods for processing acoustic cement evaluation data
US10119387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2014 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jan 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems, methods, and devices for evaluating proper cement installation in a well are provided. In one example, a method includes obtaining acoustic cement evaluation data points and processing the acoustic cement evaluation data points using a solid-liquid-gas model to assign at least some of the acoustic cement evaluation data points to a material of solid, liquid, or gas in an annulus of the wellbore behind the casing. The solid-liquid-gas model includes a tight solid-liquid-gas model in which a gas threshold range is not directly adjacent to a liquid threshold range and/or a solid-liquid-gas model that considers flexural attenuation when a pulse-echo-derived acoustic impedance is below an evanescence point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.