Schlumberger Technology Corporation

Services Petroliers Schlumberger

Shelby Wayne Carter

Jerod Bushman

Henrix Soto

Jeffrey Ham

Gocha T Chochua

Erik Quam

An apparatus includes a conduit forming part of a drilling fluid return path from a wellbore. The the conduit has at least one well outflow control in the conduit. The at least one well fluid outflow control has at least two annular flow restrictors each separately operable to close to a respective inner diameter.

Staged annular restriction for managed pressure drilling

A conduit forming part of a drilling fluid return path from a wellbore has at least one flow restrictor disposed on an interior surface of the conduit. A drill string is disposed through the interior of the conduit and has at least one flow restrictor disposed on an exterior surface of the drill string. The drill string is longitudinally movable through the conduit to enable placing the flow restrictor in the conduit, and the flow restrictor on the drill string at a selected longitudinal distance from each other.

Aligned disc choke for managed pressure drilling

Plugs, receptacles, and assemblies including same. The plug can include an interface having a plurality of pins extending therefrom. The plug can have a plug density of at least 280 pins/in. The plurality of pins can be positioned in at least three rows along a longitudinal axis of the interface. The receptacle can have an interface having a plurality of sockets disposed therein. The receptacle can have a receptacle density of at least 280 sockets/in. The plurality of sockets can be positioned in at least three rows along a longitudinal axis of the interface.

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Sugar Land, TX, United States of America

Shelby Wayne Carter