Schlumberger Technology Corporation

Other

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Prad Research and Development Limited

Julian J Pop

Kai Hsu

Kentaro Indo

Steven G Villareal

Kent David Harms

Martin E Poitzsch

Jean-Marc Follini

Albert Hoefel

Sepand Ossia

Reza Taherian

Pierre-Yves Corre

Jeremy Murphy

Peter Speier

Oliver Clinton Mullins

Alexander F Zazovsky

Adriaan Gisolf

Anthony Robert Holmes Goodwin

Simon H Bittleston

Alexis Petit

Christopher Del Campo

Anthony R H Goodwin

Nathan Mathew Landsiedel

Thomas H Zimmerman

Dale E Meek

Tullio Moscato

Tudor Ioan Palaghita

Maxim Nikolayevich Yushko

Sylvain Ramshaw

Zeynep Alpman

Jean-Louis Pessin

Rogerio Tadeu Ramos

Jacques R Tabanou

Ashers Partouche

Jonathan Webster Brown

Soraya Sofia Betancourt

Jeffrey A Tarvin

Ashley C Kishino

Christopher Albert Babin

Daniel Palmer

Stephen Yeldell

Peter Swinburne

Angus J Melbourne

Steven Villareal

Youxiang Zuo

Cosan Ayan

Stephane Briquet

Andrew L Kurkjian

Ricardo Vasques

Go Fujisawa

Thomas D MacDougall

Colin Longfield

Alain P Dorel

Carsten Sonne

Bunker M Hill

William Ewan Brennan, Iii

Michael J Stucker

John Sherwood

Yong Chang

Robert Wayne Sundquist

Terizhandur S Ramakrishnan

Bruno Drochon

Gary John Tustin

Li Jiang

Edward Harrigan

Christopher Harrison

Lei Jiang

Peter S Hegeman

Sylvain Bedouet

Oivind Brockmeier

Eric P Donzier

Chengli Dong

Vladimir Vaynshteyn

Jean-Michel Hache

Toru Terabayashi

Jeffrey Miles

Stephane Metayer

Hadrien Dumont

Paul Simon Hammond

Srinand Sreedharan Karuppoor

Raymond V Nold, Iii

Andrew John Carnegie

Pierre Henri Campanac

Steven E Buchanan

Ramon Hernandez-Marti

Hua Yu

Victor Matthew Bolze

Anthony Goodwin

Jean Desroches

Francois Xavier Dubost

Beatriz E Barbosa

Troy Fields

Bo Yu

Shahid Azizul Haq

Yves Barriol

Chetankumar Natwarlal Desai

Olivier Vancauwenberghe

Akihito Chikenji

Charles Fensky

Adriaan Gerard Gisolf

Thomas W Palmer, Ii

A method includes positioning a downhole acquisition tool in a wellbore in a geological formation. The method includes operating a pump module to gather information for a fluid outside of the downhole acquisition tool that enters the downhole acquisition tool from a first flowline, a second flowline, or both while the downhole acquisition tool is within the wellbore. Operating the pump module includes controlling a valve assembly to a first valve configuration that enables the fluid to flow into the downhole tool via the first flowline fluidly coupled to a first pump module. Operating the pump module includes controlling a valve assembly to a second valve configuration that enables the fluid to flow into the downhole tool via the second flowline fluidly coupled to a second pump module, and selectively using a turnaround module or a crossover portion disposed between the first flowline and the second flowline to permit discharging the fluid from one flowline to the other flowline by actuating a valve associated with the turnaround module when the first pump module or the second pump module is not in use.

Terminal modules for downhole formation testing tools

A method to offer insight on reservoir compartmentalization through the automation of single- and multi-well formation pressure analysis. The method specifically accounts for the measurement uncertainty and any prior information about the reservoir to draw evidence on at least one of a fluid type, a locating feature of the at least one fluid body, vertical compartmentalization, and lateral compartmentalization.

Automated analysis of pressure data

A method for evaluating a formation fluid includes flowing formation fluid through a flowline in a downhole fluid sampling and evaluation measurement tool deployed in a wellbore and making optical absorption measurements on the flowing formation fluid to generate a plurality of optical density spectra. A spectrum from the plurality of generated spectra is selected using predetermined selection criteria that are based on optical density values at one or more selected wavelengths in the generated spectra. At least one fluid property is estimated from the selected spectrum.

Wellbore fluid optical spectra extraction

A method for sampling a downhole formation fluid includes pumping formation fluid into the flowline of a downhole sampling tool While pumping, a saturation pressure of the formation fluid is measured. The pumping rate is adjusted such that the fluid pressure in the flowline remains above a threshold saturation pressure.

Flowline saturation pressure measurements

Apparatus and methods for obtaining initial settings of station-specific parameters descriptive of wellbore/formation properties specific to downhole pressure test stations, and obtaining initial settings of station-shared parameters descriptive of petrophysical properties of petrophysically unique formation zones. A pressure transient model of the zones is obtained by regression utilizing the pressure data of each station and the initial settings of the station-specific and station-shared parameters. The regression analytically determines a model value of at least one of the station-specific parameters and the station-shared parameters.

Interpretation of pressure test data

A method for sampling a downhole formation fluid includes pumping formation fluid into the flowline of a downhole sampling tool, measuring a saturation pressure of the formation fluid in the flowline while pumping, and adjusting the pumping rate such that the fluid pressure in the flowline remains within a predetermined threshold above the measured saturation pressure.

Flowline saturation pressure measurement

A method for measuring asphaltene content of a crude oil is provided. In one embodiment, the method includes measuring an optical density of a live crude oil within a well and calculating a formation volume factor of the live crude oil based on the measured optical density. The method also includes determining asphaltene content of the live crude oil based on the measured optical density and the calculated formation volume factor of the live crude oil. Additional methods, systems, and devices are also disclosed.

Method of obtaining asphaltene content of crude oils

A method includes pumping fluid from outside of a downhole tool through a flowline of the downhole tool with a pump. The method further includes taking a first plurality of measurements over time using at least one sensor and estimating a future saturation pressure of the fluid within the flowline at constant time increments via a processor based at least in part on the first plurality of measurements and a saturation pressure model. The method further includes adjusting the flowline pressure to maintain the pressure of the flowline above the estimated future saturation pressure.

Method to estimate saturation pressure of flow-line fluid with its associated uncertainty during sampling operations downhole and application thereof

A method for sampling a downhole formation fluid includes pumping formation fluid into the flowline of a downhole sampling tool. The method can also include measuring a saturation pressure of the formation fluid in the flowline while pumping. The method can also include adjusting the pumping rate such that the fluid pressure in the flowline remains within a predetermined threshold above the measured saturation pressure.

A method includes positioning a downhole acquisition tool in a well-logging device in a wellbore in a geological formation, where the wellbore or the geological formation, or both contain a reservoir fluid. The method includes performing downhole fluid analysis using a downhole acquisition tool in the wellbore to determine a plurality of fluid properties associated with the reservoir fluid. The method includes generating a nonlinear predictive control model representative of the plurality of fluid properties based at least in part on the downhole fluid analysis. The method includes adjusting the nonlinear predictive control model based at least in part on an output representative of a pump flow control sequence at a first time interval and the plurality of fluid properties.

Systems and methods for pump control based on non-linear model predictive controls

A method includes operating a downhole acquisition tool in a wellbore in a geological formation. The wellbore or the geological formation, or both, contain a reservoir fluid. The method also includes receiving a portion of the reservoir fluid into the downhole acquisition tool and performing downhole fluid analysis using the downhole acquisition tool in the wellbore to determine at least one measurement associated with the portion of the reservoir fluid. The at least one measurement includes fluid density, optical density, or both. The method also includes using a processor of the downhole acquisition tool to obtain compressibility of the reservoir fluid based at least in part on the fluid density, the optical density, or both and determining a composition of the reservoir fluid based at least in part on the compressibility.

Downhole characterization of fluid compressibility

A method for sampling a downhole formation fluid that includes pumping formation fluid into the flowline of a downhole sampling tool. The method also includes measuring a saturation pressure of the formation fluid in the flowline while pumping, and adjusting the pumping rate such that the fluid pressure in the flowline remains within a predetermined threshold above the measured saturation pressure.

A method for determining formation fluid sample quality includes analyzing sample capture data to identify distinguishing features indicative of whether a successful sample capture has occurred within a downhole tool. The method further includes prioritizing, based on the analysis, the sample capture data for transmission to a surface system.

Sample capture prioritization

Growing community of inventors

Houston, TX, United States of America

Julian J Pop