Method of fault detection and recovery in a tubing string located in a wellbore and apparatus for same
US11578589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2021 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Mar 21, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/52
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of fault detection and recovery in a tubing string located in a hydrocarbon well, a method of fault protection in a tubing string located in a hydrocarbon well, and an apparatus and system for same. In one aspect, there is provided a method of fault detection and recovery in a tubing string located in a hydrocarbon well, the tubing string having a plurality of valves, each valve having a control unit, each control unit being connected in series to a power-line providing power and communication, each of the control units being independently controllable. The method comprises: detecting a short circuit, fault or failure in one of the control units of the tubing string via an output of the power-line; causing individual control units to be selectively isolated from the power-line via a circuit interrupting device; and determining one or more control unit associated with the short circuit, fault or failure via the output of the power-line while individual control units are selectively isolated from the power-line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.