Combined surface and downhole kick/loss detection
US10041316B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2015 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Apr 23, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for verifying that a kick or loss detected by surface monitoring equipment has occurred includes: receiving an input signal having notification that a kick or a loss has been detected in an earthen borehole during a time interval when drilling fluid is not being pumped into a drill string disposed in the borehole; sensing a pressure in the borehole to provide sensed pressure readings; comparing the sensed pressure readings to an upper threshold and a lower threshold; verifying that a kick has occurred if the notification comprises a kick detection and the sensed pressure reading are above the upper threshold; verifying that a loss has occurred if the notification comprises a loss detection and the sensed pressure readings are below the lower threshold; and transmitting a kick or loss verification signal to a signal receiving device upon verification that the kick or loss has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.