Algorithm for zonal fault detection in a well environment
US9394784B2 · kind B2 · utility
4Cited by
52References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2013 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Jan 11, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/138
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydrocarbon well (e.g., oil well) may be monitored during to determine whether a fault exists during an operation such as injecting sealant (e.g., cement) into the borehole. RFID tags may be mixed in a wellbore fluid (e.g., drilling mud, cement, etc.), placed into a borehole, and then tracked within the borehole by communication assemblies with RFID sensors. Data may be obtained by interrogating RFID tags in one or more azimuthally oriented regions of an annulus surrounding a casing of the borehole. Fluid distribution in the annulus will be evaluated with respect to azimuthally offset regions of the annulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.