Schlumberger Technology Corporation

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Prad Research and Development Limited

Christopher Harrison

Matthew T Sullivan

Oliver Clinton Mullins

Elizabeth Jennings Smythe

Youxiang Zuo

Shunsuke Fukagawa

Adriaan Gisolf

Bhavani Raghuraman

Jacques A Jundt

Jimmy Lawrence

Kai Hsu

Li Jiang

Cosan Ayan

Hadrien Dumont

Anthony Robert Holmes Goodwin

Albert Ballard Andrews

Michael Mallari Toribio

Chetankumar Natwarlal Desai

John Meier

Rogerio Tadeu Ramos

Kosta Ladavac

Timothy Gareth John Jones

Ronald E G Van Hal

Douglas W Grant

Vinay K Mishra

Michael O'Keefe

Hua Chen

Christopher Albert Babin

Gale Hyslip Gustavson

German Garcia

Abhishek Agarwal

Andreas Hausot

Chloe Coleou

Tsutomu Yamate

Robert J Schroeder

Andrew Emil Pomerantz

Farshid Mostowfi

Neil William Bostrom

Li Chen

Sophie Nazik Godefroy

Ronald Van Hal

Bill Grant

Dan Eugen Angelescu

Brian Oliver Clark

Julian J Pop

Kentaro Indo

Bradley Albert Roscoe

Gary Martin Oddie

Stephane Vannuffelen

Eric P Donzier

Hitoshi Sugiyama

Denise E Freed

Chengli Dong

Shahnawaz Hossain Molla

Andrew Speck

Abdel Kharrat

Andrew John Carnegie

Zilu Zhou

Akira Kamiya

Oleg Zhdaneev

Noriyuki Matsumoto

John Ratulowski

Vincent Joseph Sieben

Thomas Pfeiffer

Shawn David Taylor

Marian Faur

William H Steinecker

Joyce Wong

Philippe F Salamitou

A Ballard Andrews

Younes Jalali

Jane T Lam

Kamal Kader

Anthony Smits

Gordon R Lambertus

Akihito Chikenji

Olivier Vancauwenberghe

Emmanuel Desroques

Ahmad Latifzai

Dingan Zhang

Roman Kats

Neil Bostrom

Julian Youxiang Zuo

Michael Stangeland

Sophie Godefroy

James G Haug

Bradley Martin

Bradley Kaanta

Huang Zeng

Wei Heong Tan

Florence Le Gallic De Kerizouet

Isabelle Etchart

Antoine Fornari

Ryota Tonoue

Tyler Stenstrom

Graham Drummond

Mary Jane Tsang Mui Ching

Gale H Gustavson

Ronald EG Van Hal

Embodiments presented provide for a method and apparatus for testing a sample fluid for asphaltene deposition. The apparatus provides two testing cylinders and a transfer pump to transfer fluid from the first cylinder to the second cylinder and back again while pressure is varied on the testing fluid, while a spectrometer evaluates the fluid during the pressure variation.

High temperature high pressure asphaltene deposition/inhibitor screening test

Asphaltene onset pressure of a formation fluid is determined by subjecting the fluid to a plurality of tests where depressurization is conducted at a different depressurization rate for each test while optically monitoring the fluid for asphaltene flocculation. The pressures at which asphaltene flocculation are detected in each test are fit to a curve as a function of depressurization rate, and the curve is extrapolated to a pressure (e.g., 0 psi) to provide the asphaltene onset pressure.

Method and system for determining asphaltene onset pressure

Embodiments of the disclosure can include systems, methods, and devices for determining saturation pressure of an uncontaminated fluid. A technique facilitates fluid analysis in situ at a downhole location. Downhole saturation pressure measurements and downhole OBM filtrate contamination of a contaminated fluid may be obtained and a relationship may be determined between the saturation pressure measurements and OBM filtrate contamination. The relationship may be extrapolated to zero OBM filtrate contamination to determine the saturation pressure of the uncontaminated fluid. According to an embodiment, a sample of oil is obtained at the downhole location from oil in a reservoir. A downhole sampling system is used to determine whether a sample has contamination and other selected characteristics of the sample. The data obtained may be processed to provide a formation volume factor of the oil.

Methods and systems for estimation of oil formation volume factor

Methods for obtaining in-situ, multi-temperature measurements of fluid properties, such as saturation pressure and asphaltene onset pressure include obtaining a sample of formation fluid using a downhole acquisition tool positioned in a wellbore in a geological formation. The downhole acquisition tool may be stationed at a first depth in the wellbore that has an ambient first temperature. While stationed at the first depth, the downhole acquisition tool may test a first fluid property of the sample to obtain a first measurement point at approximately the first temperature. The downhole acquisition tool may be moved to a subsequent station at a new depth with an ambient second temperature, and another measurement point obtained at approximately the second temperature. From the measurement points, a temperature-dependent relationship of the first fluid property of the first formation fluid may be determined.

Methods for in-situ multi-temperature measurements using downhole acquisition tool

Embodiments of the disclosure can include systems, methods, and devices for determining saturation pressure of an uncontaminated fluid. Downhole saturation pressure measurements and downhole OBM filtrate contamination of a contaminated fluid may be obtained and a relationship may be determined between the saturation pressure measurements and OBM filtrate contamination. The relationship may be extrapolated to zero OBM filtrate contamination to determine the saturation pressure of the uncontaminated fluid. In some embodiments, OBM filtrate contamination may be determined from downhole saturation pressure measurements during pumpout of a fluid.

Methods and systems for correction of oil-based mud filtrate contamination on saturation pressure

Methods and downhole tools for operation within in a wellbore that extends into a subterranean formation. The operation includes simultaneously causing a change in a first parameter of fluid drawn into the downhole tool from the formation and determining a change in a second parameter of the fluid relative to the change in the first parameter. A third parameter of the fluid is determined based on the first and second parameter changes.

Determining asphaltene onset

Apparatus and methods for obtaining a data response of a fluid as a function of pressure of the fluid, and estimating a dew point pressure of the fluid by detecting an inflection pressure, a downward curve pressure, a characteristic change pressure, and an intersection pressure of the function representative of the data response. The estimated dew point pressure of the fluid based on at least one of the inflection pressure, the downward curve pressure, the characteristic change pressure, and the intersection pressure.

Prediction of saturation pressure of fluid

A downhole tool includes a membrane to separate water from a formation fluid and a meter that operates as a densitometer and a Coriolis effect flowmeter.

Fluid analysis with Coriolis effect flowmeter

Devices, methods and systems for determining one or more properties of at least one fluid sample. A tube configured to receive the at least one fluid sample wherein the tube is placed in a pressure housing. Further, an excitation source configured to generate vibration of the tube whereby a circulation of an electrical current along a portion of the tube is subjected to at least one magnetic field produced by at least one magnet. Further still, at least one vibration sensor that converts vibrations of the tube into a measurement signal. Finally, a processor that receives the measurement signal determines a resonant frequency from the measurement signal using a frequency measuring device to determine a property of the one or more properties of the at least one sample fluid.

Microfluidic oscillating tube densitometer for downhole applications

A vibrating-tube fluid measurement device includes a tube, a base block, a magnet which applies a magnetic field to the tube, an excitation source which generates vibration of the tube, a vibration sensor which measures a signal corresponding to a vibration frequency of the tube, and an electrical isolator formed of glass, wherein the vibrating tube is mounted to a base block via the electrical isolator and electrically isolated from the base block via the electrical isolator.

Fluid analysis system with densitometer having electrically isolated vibrating tube

A method and an apparatus for characterizing a fluid provide for flowing a sample fluid through a microfluidic flow line in a first direction and into contact with a microfluidic sensor, measuring a property of the fluid sample using the microfluidic sensor; and after measuring the property of the fluid sample, flushing the microfluidic sensor by flowing a solvent through the microfluidic flow line in a second direction that is opposite the first direction.

Flushing microfluidic sensor systems

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Auburndale, MA, United States of America

Christopher Harrison