Baker Hughes Corporation

Baker Hughes Holdings LLC

Robert S Martin

Virgilio C Go Boncan

Steven H Craig

Joseph Michael Shine, Jr

Keith Lant

Charles C Buford, Jr

Richard Thomas Koch, Jr

Richard Thomas Jr* Koch

A barrier onto the surface of a subterranean formation may be formed by pumping into a wellbore within a well hydrophobically modified polysaccharides. A pressure differential is created between the reservoir pressure and formation pressure within the well. The micellular hydrophobically modified polysaccharides self-align onto the face of the formation to form the barrier. Flow of fluids into the subterranean formation is thereby prohibited.

Method of improving cleanout of a wellbore

A multi-function testing apparatus contains a test cell, a piston positioned within the test cell and an adjustable piston depth-setting rod. The testing apparatus may be used to assess carbon dioxide resistance and hydraulic bonding strength of a set cement as well as to evaluate the self-healing capabilities of a set cement. Testing on the set cement may be conducted at simulated downhole conditions.

Multi-function testing apparatus for cement and methods of using the same

An apparatus for determining shear bond strength of a cement to be set within a wellbore penetrating a subterranean formation consists of a housing, a vertical rod which extends from the uppermost portion of the housing through the lowermost portion of the housing, a base plate for positioning onto the bottom of the housing and for supporting the lowermost portion of the vertical rod, and a test plate for positioning onto the top of the housing through which the uppermost portion of the vertical rod extends. The apparatus may further contain a push rod. Shear bond strength is determined by introducing into the housing a sample core of the formation prior to introduction of a slurry containing the cement. The force required to break the bond between the vertical rod and the set cement may be used to determine the shear strength between the casing within the wellbore and the set cement when the cement is hardened within the wellbore. The force required to break the bond between the set cement and the sample core may be used to determine the shear strength between the set cement and formation core when the cement is hardened within the wellbore.

Method of measuring shear bond strength of cement

Growing community of inventors

Spring, TX, United States of America

Robert S Martin