Schlumberger Technology Corporation

Glenn Johnson

Vikas Rakhunde

Yawan Couturier

Bastiaan Liezenberg

Jesse Alan Hardt

A method includes pumping fluid into a drill string extending through a riser into a well. A managed pressure drilling system is operated to maintain a selected fluid pressure in the well between the well and the drill string. A fluid influx into the well or a fluid loss into a formation traversed by the well is detected using measurements of fluid pressure in the well and fluid flow into and out of the well. The method includes automatically abating the fluid influx by closing an annular blowout preventer disposed in the riser or abating the fluid loss by operating the annular blowout preventer and pumping a sacrificial fluid into the drill string.

Growing community of inventors

Houston, TX, United States of America

Glenn Johnson