Smart flowback alarm to detect kicks and losses
US9784100B2 · kind B2 · utility
1Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Mar 29, 2013 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | May 3, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method, apparatus and computer-readable medium for determining an influx at a wellbore is provided. A flowback parameter is obtained for a plurality of flowback events at the wellbore prior to a current flowback event. An average of the flowback parameter (μ) and a standard deviation (σ) of the flowback parameter is determined from the plurality of prior flowback parameters. An alarm threshold is set based on the determined average and the standard deviation. A current flowback parameter is measured and the influx is determined when the current flowback parameter meets the alarm threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.