Method of fault detection and recovery in a tubing string located in a hydrocarbon well, and apparatus for same
US10927663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | May 2, 2039 |
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 is described, 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 includes: 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 units 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. A method of fault protection in a tubing string, and an apparatus and system for the same are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.