Schlumberger Technology Corporation

Other

Hexion Inc.

Element Six Gmbh

Cameron International Corporation

Bp Corporation North America Inc.

Schlumberger Technology Corportion

Microsoft Corporation

Prad Research and Development Nv

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Li Jiang

Timothy Gareth John Jones

Oliver Clinton Mullins

Xuedong D Huang

Nathan Scott Lawrence

Bhavani Raghuraman

Andrew Meredith

Timothy Gareth Jones

Go Fujisawa

Terizhandur S Ramakrishnan

Christopher Harrison

Bruno Lecerf

Richard Donald Hutchins

Murtaza Ziauddin

Jimmy Lawrence

Rogerio Tadeu Ramos

Kosta Ladavac

Ronald E G Van Hal

Albert Ballard Andrews

Jan Beetge

Tsutomu Yamate

Kentaro Indo

Jonathan Webster Brown

Neil Perkins

Steven Antony Gahlings

Rolf Rustad

Julian J Pop

Gary John Tustin

Philip F Sullivan

John R Lovell

Robert J Schroeder

Timothy David Jones

Gary Martin Oddie

Xu Wu

Stephane Vannuffelen

Andrew L Kurkjian

Mohan Kanaka Raju Panga

Chengli Dong

Michael D Parris

Vladimir Vaynshteyn

Frank F Espinosa

Anthony Robert Holmes Goodwin

Soraya Sofia Betancourt

Andrew John Carnegie

Andrey Mirakyan

Sergey Makarychev-Mikhailov

Akira Kamiya

Christopher Daeffler

Michael O'Keefe

Noriyuki Matsumoto

Michael J Rozak

Timothy G J Jones

Gale Hyslip Gustavson

Clive Edward Hall

Markus Pagels

Richard Guy Compton

Sheng Chao

Clive E Hall

Jian He

Roy Koveleski

Chad Kraemer

Wenlin Zhang

Quincy K Elias

Charles Simon James Pickles

Jack Li

Fenglou Zou

Albert M Perez

Andrew Gilbert

Hanpu Liang

Amilra Prasanna De Silva

Richard Antonius Kleijhorst

Debbie S Silvester

Tian Wu

Marian Faur

Anthony Goodwin

Christian Besson

Stephen D Hill

Andreas Manz

Philip Rabbito

A Ballard Andrews

Albert Perez

Gregory George Wildgoose

Brent Busby

Michael M Toribio

Javier Sanchez Reyes

Olga Vladimirovna Nevvonen

Mahmuda Afroz

Hani Elshahawi

Salvador Ayala

Robert Kevin O'Leary

Hidetoshi Yoshiuchi

Michael Orlet

Steve Davies

Merlyn Xavier Pulikkathara

Boris Matveev

Christina D Martin

Franklin Leal

Tim G J Jones

Elexander Salinas

Malingappagari Pandurangappa

A method for generating a high-resolution pseudo-reflectivity image of a subsurface region includes receiving seismic data associated with a subsurface region and captured by one or more seismic receivers, constructing a velocity model of the subsurface region based on the received seismic data, performing a seismic migration of the received seismic data based on the constructed velocity model to obtain migrated seismic data, computing polarized normal vectors associated with one or more subsurface reflectors of the subsurface region based on the migrated seismic data, and generating a pseudo-reflectivity image of the subsurface region based on both the computed polarized normal vectors.

Method and apparatus for implementing a high-resolution seismic pseudo-reflectivity image

The embodiments described herein generally relate to methods and chemical compositions for use with wellbore treatment processes. In one embodiment, a composition is provided comprising a cementitious material, a drilling fluid, or combinations thereof, and an additive composition comprising one or more components selected from the group of an aqueous insoluble lignin, a coke fine, a random tetracopolymer having the formula styrene-butadiene-acrylic-fumaric acid, a polyvinyl acetate, a surfactant composition, and combinations thereof.

Multiple functional wellbore fluid additive

A process for determining a content of hydrogen in a fluid medium includes contacting the fluid medium with a sensor. The sensor has a housing enclosing a chamber containing an ionic liquid electrolyte, a window which is permeable to hydrogen and positioned in an opening in the housing, and electrodes in contact with the ionic liquid electrolyte in the chamber. Hydrogen is allowed to pass through the window from the fluid medium into the electrolyte and the sensor is heated. Temperature and pressure of the fluid medium is determined and electrical potential is applied to the electrodes. The method also includes measuring current flow. The sensor can be used to observe hydrogen concentration by voltammetry. The method and sensor may be used for measuring downhole hydrogen content, monitoring fiber-optic cables for damage by hydrogen, corrosion monitoring, and in small-scale process plants where hydrogen is part of a gas stream.

Electrochemical hydrogen sensor

A sensor for monitoring COin a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO. The amount of COis determined from the intensities of the mid-infrared radiation passing through the three filters.

Mid-infrared carbon dioxide sensor

The embodiments described herein generally relate to methods and chemical compositions for use with wellbore treatment processes. In one embodiment, a composition is provided comprising a mineral acid and a retardation agent selected from the group of an amine containing compound, an amide containing compound, lignosulfonate, and combinations thereof.

Wellbore composition

A sensor for hydrogen in a fluid medium has a chamber for electrolyte with a window which is selectively permeable to hydrogen to allow hydrogen to pass from the fluid medium under test into the electrolyte in the chamber. A plurality of electrodes in contact with the ionic liquid electrolyte are used to observe hydrogen concentration by voltammetry. The electrolyte is an ionic liquid. Applications where such a sensor may be used include a wellbore tool for measuring the content of hydrogen in a subterranean fluid, monitoring of fiber-optic cables for damage by hydrogen, corrosion monitoring, and small-scale process plant where hydrogen is part of a gas stream.

Described herein is an apparatus and methods for characterizing a fluid composition including exposing electrolyte to one fluid mixture, collecting a signal from an electrode in contact with the electrolyte, and simultaneously exposing the electrolyte to a second fluid, collecting a signal from a second electrode in contact with the electrolyte exposed to the second fluid, and comparing the signal difference between the electrodes with the Nerst equation wherein the temperature of the electrolyte is above 488&#xb0; C. Carbon dioxide, nitrogen, and/or oxygen may be present in the fluid and/or the second fluid.

CO2 concentration measurement in dry gas mixtures

A sensor for monitoring COin a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO. The amount of COis determined from the intensities of the mid-infrared radiation passing through the three filters

The embodiments described herein generally relate to methods and chemical compositions for use with cementing processes. In one embodiment, a composition is provided comprising a random tetracopolymer having the formula styrene-butadiene-acrylic-fumaric acid, a polyvinyl acetate, and a nonionic surfactant.

Materials and methods of use as additives for oilwell cementing

The present invention, in one set of embodiments, provides methods and systems for integrating conducting diamond electrodes into a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, diamond electrodes may be integrated into a high power acoustic resonator to provide a robust sensing device that may provide for acoustic cleaning of the electrodes and increasing the rate of mass transport to the diamond electrodes. The diamond electrodes may be used as working, reference or counter electrodes or a combination of two or more of such electrodes. In certain aspects, the high power acoustic resonator may include an acoustic horn for focusing acoustic energy and the diamond electrodes may be coupled with the acoustic horn.

Erosion and wear resistant sonoelectrochemical probe

A sensor is provided for monitoring a mineral acid dissolved in a liquid. The sensor includes an internal reflection window which, in use, is in direct contact with the liquid. The sensor further includes a mid-infrared light source which directs a beam of mid-infrared radiation into said window for attenuated internal reflection at an interface between the window and the liquid. The sensor further includes a first narrow bandpass filter which preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of the dissolved mineral acid to filter internally reflected mid-infrared radiation received from the window. The sensor further includes an infrared detector which detects filtered mid-infrared radiation transmitted through the first filter. The sensor further includes a processor arrangement, operably coupled to the infrared detector, which measures the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the mineral acid dissolved in the liquid.

Mid-infrared acid sensor

Methods for treating subterranean wells in which the producing formation is a carbonate comprise preparing a treatment fluid comprising either: (a) an aqueous solution of a multivalent-cation reacting polymer; (b) a solution comprising a fatty acid and an ethanolamine; (c) an aqueous acidic solution of one or more compounds whose calcium salts are insoluble; or (d) an aqueous solution comprising urea or alkane derivatives thereof or both and polyvinylpyrrolidone (PVP). The treatment fluid is placed in the well such that the solution contacts the carbonate formation at a pressure lower than the fracturing pressure. The treatment fluid is allowed to react with the carbonate formation, thereby depositing a film onto the formation surface or part of the formation surface. Then an acid solution is placed in the well such that the acid contacts the carbonate formation at a pressure lower than the fracturing pressure.

Compositions and methods for treating subterranean formations

An aqueous composition comprising a mineral acid, a fixing agent and water present in an amount sufficient to dissolve the mineral acid and the fixing agent. The fixing agent comprises at least one of an amine and/or an amide containing compound having a dipole moment of at least 3 when in the aqueous composition.

Preparation method, formulation and application of chemically retarded mineral acid for oilfield use

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Aqueous compositions contain hydrochloric acid at a concentration between 8 wt % and 28 wt % inclusive. The amino acid; hydrochloric acid mole ratio may be between 0.2 and 1.5. Sufficient water is present to dissolve the hydrochloric acid and the amino acid. Such compositions have utility as retarders for acid compositions employed in the stimulation of subterranean formations. Slowing the reaction between the acid and formation helps maximize formation permeability and productivity.

Aqueous solution and method for use thereof

Growing community of inventors

Katy, TX, United States of America

Li Jiang