Schlumberger Technology Corporation

Niek Dijkstra

Graham Watson

Michael A Dowling

Eirik Windegaard

Geir Meling

Jone Sigmundsen

Emmanuel Balster

Magnus Paulsen

Bjoern Staale Varnes

A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus and a lower annulus and a barrier valve coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus.

Wellbore annular safety valve and method

A dual barrier side pocket mandrel with gauge includes a gas lift barrier valve mandrel with permanent sensors and at least two pockets for accepting gas lift barrier valves, wherein the pockets are connected via a port. The mandrel also includes a production conduit along a central longitudinal axis. The mandrel is encompassed by a casing on the inside of a well. The permanent sensors can monitor a pressure or a temperature in the casing, production conduit, and port to determine the status of the individual gas lift barrier valves.

Dual barrier side pocket mandrel with gauge

Growing community of inventors

Houston, TX, United States of America

Niek Dijkstra