Schlumberger Technology Corporation

Politecnico Di Torino

Services Petroliers Schlumberger

Simone Musso

Jeffrey E Thomas

Matteo Pavese

Smaine Zeroug

Francois M Auzerais

Harald Quintus-Bosz

Agathe Robisson

John David Rowatt

Joshua P Kinsley

Mickael Allouche

Yucun Lou

Alfred J Costa

Ching-Hua Tseng

Roman Kats

Julien Prosper Marc Aknin

Kenneth Kin-nam Liang

Jonathan Andrew Bannister

Luca Lavagna

Methods of preparing dispersions of carbon-based materials are disclosed herein. In some embodiments, a method comprises exposing the carbon-based material to an atmosphere comprising between about 0.5% v/v and about 5.0% v/v of oxygen for a selected time at an oxidation temperature to obtain a thermally oxidized material; and dispersing the thermally oxidized material in a liquid medium.

Process for the production of dispersions of thermally oxidised carbon-based materials

Methods and apparatus for analyzing the material properties and behavior of cement as it hydrates under simulated downhole conditions. A wellbore cement simulator includes a temperature and pressure controlled innermost oil-filled container; an annulus in contact with the innermost container configured to hold a cement sample; a mesh sleeve in contact with the annulus wherein the mesh sleeve is water permeable to permit hydration of the cement sample; a steel sleeve in contact with the mesh sleeve; an elastomeric bladder surrounding the steel sleeve; and a temperature and pressure controlled outermost oil-filled container.

Wellbore cement simulator

Methods may include pumping a cement composition containing one or more conductive fillers into an annular region of a wellbore created between a casing and a surface of the wellbore, allowing the cement composition to cure, emplacing a tool for measuring at least one electromagnetic property into the wellbore, and measuring at least one of the cemented casing and the formation. In another aspect, methods may include preparing a cement composition containing one or more conductive fillers, allowing the cement composition to set, and measuring at least one electromagnetic property of the set cement. In yet another aspect, cement compositions may contain a cement, one or more conductive fillers, and a surfactant, wherein the resistivity of the cement composition is less than 10 &#x3a9;*m.

Piezoresistive cement nanocomposites

Apparatus and methods for measuring confining pressure, axial strain and radial strain of zonal isolation materials are described. This information is useful for evaluating these materials and predicting seal performance and potential failures of these materials.

Confining pressure measurement for zonal isolation evaluation

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Cambridge, MA, United States of America

Simone Musso