Sand pack and gravel pack acoustic evaluation method and system
US11249211B2 · kind B2 · utility
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3References
38Claims
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Key dates
| Filing date | Sep 13, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Oct 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/67
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for characterizing a sand-pack or gravel-pack in a subsurface formation includes inducing a pressure change to induce tube waves in fluid in a well drilled through the subsurface formation. At a location proximate to a wellhead at least one of pressure and a time derivative of pressure in the well is measured for a selected length of time. At least one of a physical parameter and a change in the physical parameter with respect to time, of the sand-pack or gravel-pack, is determined using the measured pressure and/or the time derivative of pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.