Ncs Multistage Inc.

Patrick Williamson

Ramin Tajallipour

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.

Method of fault detection and recovery in a tubing string located in a wellbore and apparatus for same

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.

Growing community of inventors

Calgary, Canada

Patrick Williamson