Adaptive quality control for monitoring wellbore drilling
US11306581B2 · kind B2 · utility
1Cited by
1References
40Claims
0Family size
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Key dates
| Filing date | Oct 10, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of validating a directional survey includes measuring the gravity and magnetic field vectors using a surveying tool and computing an overall statistical distance of the measurement. The statistical distance may be calculated from reference values associated with the surveying tool using corresponding surveying tool codes with error values. In a further aspect, an error covariance matrix may be used to determine whether the new errors m a survey are consistent or not with errors from one or more previous surveys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.