Surface excited downhole ranging using relative positioning
US10844705B2 · kind B2 · utility
0Cited by
8References
17Claims
0Family size
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Key dates
| Filing date | Jan 20, 2016 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jan 20, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A downhole relative positioning system utilizes electromagnetic and survey measurements from a first well to calibrate a formation model, which is then used to improve the interpretation of measurements from a second well. Since the methods described herein utilize a differential approach, even though the exact position of each wellbore may not be accurately identified, their relative positions can be accurately identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.