Determining drill string status in a wellbore
US9416646B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2012 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Jun 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a status of a drill string in a wellbore. The method can include obtaining pressure data and hook load data for the drill string. The pressure data can be filtered to obtain pressure sections. A low pressure threshold can be determined based upon the pressure sections. The hook load data can be filtered to obtain hook load sections. Hook load baselines can be determined based upon the hook load sections. Dynamic thresholds can be determined based upon the hook load baselines. An in-slips status of the drill string can be determined based upon the low pressure threshold, the dynamic thresholds, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.