Method for filtering gamma ray well logging tool response to enhance vertical detail while suppressing statistical noise
US5672867A · kind A · utility
8Cited by
6References
6Claims
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Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A typical nuclear well logging tool forms a count rate data stream including statistical noise. A robust single pass partially deconvolved smoothing filter matched to the tool response is applied to the count rate data to enhance vertical resolution while minimizing the statistical noise increase. The smoothing filter is partially deconvolved by the application of a three point deconvolution characteristic of the cusp portion of a related cusp function and a box function representative of the tool response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.