Chevron U.s.a. Inc.

Nabors Lux 2 Sarl

Peter James Clark

Michael J Fuller

Andrew Gorrara

Ola Stengel

John Bryan Trenery, Jr

Douglas Cory Arceneaux

William Dale Wood

An open hole formation surface within a wellbore of a well system is sealed with a polymer seal. A deployment system is inserted into the wellbore to the location of the open hole formation surface. The open hole formation surface may be located at the bottom of the wellbore or at an interval between two casing strings. The deployment system delivers an expandable polymer grout system to the location of the open hole formation surface. The expandable polymer grout system cures to form the polymer seal on the open hole formation surface.

Expandable polymer grout for sealing subterranean formations

A method of surveying a wellbore continuously during drilling. The method includes using a drill string with a non-rotating sub-assembly. The non-rotating sub-assembly comprises three accelerometers oriented orthogonally to each other and three directional sensors also oriented orthogonally to each other. Sample measurements from the six sensors are used to calculate the attitude of the wellbore and more specifically used to create an accurate survey of wellbores within a subterranean formation while the drill string is drilling.

Method of providing continuous survey data while drilling

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The Woodlands, TX, United States of America

Peter James Clark