Schlumberger Technology Corporation

Prad Research and Development Nv

Services Petroliers Schlumberger

Schlumberger Holdings Limited

James Metson

Philippe Gambier

Laurent Coquilleau

André Salvaire

An apparatus for installing cement plugs into a well, comprising a protective sleeve having one end adapted to be attached to the end of a drill pipe and arranged to carry a cementing plug around its outer surface such that a dart passing through the drill pipe can pass through the sleeve and engage only on formations on the plug to withdraw it from the end of the sleeve.

Apparatus and methods for deploying cementing plugs

A transmission system for use in a pump system comprising a prime mover driving a pump, the transmission system comprising: an epicylic gear system comprising a sun gear and a ring gear, and a planet gear engaged between the sun gear and ring gear; a main input drive arranged to be driven by the prime mover; an auxiliary input drive arranged to be driven by the prime mover; and an output drive arranged to drive the pump; wherein the main input drive is connected to the sun gear and either (i) the auxiliary input drive is connected to the ring gear and the output drive is lead from the planet gear; or (ii) the auxiliary input drive is connected to the planet gear and the output drive is lead from the ring gear.

Transmission system for pump drive

Growing community of inventors

Sugar Land, TX, United States of America

James Metson