SPE Production & Operations journal extends its sincere appreciation to everyone who provided a technical review for at least one paper during 2012. Many of our reviewers contributed their expertise to more than one paper during the year. We recognize the time commitment these individuals have made in agreeing to review papers and appreciate the impact that their efforts have had on the published papers throughout the year. Volunteers such as these individuals are essential to assuring the journal publishes manuscripts of high quality and lasting value. Thank you to our dedicated reviewers for their contributions.

Editor-in-Chief: Stephen A. Holditch, Texas A&M University

Executive Editor: Dean Wehunt, Chevron

Associate Editors: Frank Chang, Saudi Aramco
Craig Cipolla, Hess
Peter Clark, University of Alabama
Ian Collins, BP Exploration
Robert Duenckel, Carbo Ceramics
Niall Fleming, Statoil
Kirk Hansen, Shell
Joyce Holtzclaw, Hathaway
Bernhard Lungwitz, Schlumberger
Shaya Movafaghian, Occidental Oil and Gas
Shauna Noonan, ConocoPhillips
Liang-Biao Ouyang, Chevron
Carlos Pedroso, Petrobras
Javier Sanchez Reyes, Schlumberger
Joseph Smith, ExxonMobil
Francisco Trevisan, C-FER Technologies
Ding Zhu, Texas A&M University

Technical Editors: Hazim Abass, Saudi Aramco
Kingsley Abhulimen, University of Lagos
Gurbat Agaev, Statoil
Sergio Aguilar, Schlumberger
Abdulwahab Al-Ghamdi, Saudi Aramco
Luis Alcoser, Noble Energy
Stephen Almond, MeadWestvaco
Zahid Amjad, Walsh University
Aura Araque-Martinez, Weatherford
Kenneth Arnold, WorleyParsons
Michael Atisele, Saudi Aramco
Baojun Bai, Missouri University of Science and Technology
William Bailey, Schlumberger
Reza Barati, University of Kansas
Robert Barree, Barree & Associates
Lissett Barrios, Shell
Surendra Bateja, Oil and Natural Gas
Stephen Baumgartner, Marathon Oil
Olivia Bommarito, BP
Curtis Boney, SPUR Well Specialist
Marco Brignoli, Eni
Ernie Brown, Schlumberger
Jason Bryant, Halliburton
Richard Buell, Chevron
Michael Byrne, Senergy World
Jose Caridad, Schlumberger
Andrew Chen, Shell
Yiyan Chen, Schlumberger
Yueming Cheng, West Virginia University
Suk-Kyoon Choi, Chevron
Hayes Chow, ConocoPhillips
Thomas Clancy, Southwestern Energy
Philip Closmann, Consultant
Gerald Coulter, Coulter Energy
Alexander Crabtree, Hess
Dwyann Dalrymple, NALCO
Abhijit Dandekar, University of Alaska
Wendell De Landro, Shell
Wolfgang Deeg, Shell
Rick Dickerson, Chevron
Jing Du, Pinnacle Technologies
James Dyer, University of Texas
Christine Ehlig-Economides, Texas A&M University
Gioia Falcone, Texas A&M University
Richard Faulkner, Mack Energy
Marco Fiori, BP Canada
William Foxenberg, M-I Swaco
Joe Fram, Chevron
Wayne Frenier, Frenier Chemistry
Kyle Friehauf, ConocoPhillips
Kenji Furui, ConocoPhillips
Jose Gamboa, University of Tulsa
Razi Gaskari, Intelligent Solution
Eduardo Gildin, Texas A&M University
Gerard Glasbergen, Shell
Naval Goel, Consultant
Ahmed Gomaa, Baker Hughes
Hongren Gu, Schlumberger
Alex Guild, Chevron
Dennis Hahn, Enerplus Resources
Jim Hall, Shell
Gang Han, Saudi Aramco
Rashid Hasan, Texas A&M University
Jeff Hawkins, Nexen
Stephen Mark Heath, Champion Technologies
Paul Hicks, ExxonMobil
Dan Hill, Texas A&M University
Charles Hinrichsen, Chevron
Paul Howard, Schlumberger
Tianping Huang, Baker Hughes
W.S. Huang, Chevron
Paul Huckabee, Newfield Exploration
Richard Hutchins, Schlumberger
Vicky Jackson Nielsen, Hess
Jan-Dirk Jansen, Delft University of Technology
Robert Jeffrey, CSIRO Petroleum
Sinisha Jikich, U.S. DOE/National Energy
Liang Jin, Shell
Jeffrey Jones, EB Resources
Myles Jordan, Nalco
Priyanka Juyal, Nalco
Shah Kabir, Hess
Amy Kan, Rice University
Keith Katahara, Hess
Mohan Kelkar, University of Tulsa
George King, Chevron
Eric Kocian, ExxonMobil
Gregory Kubala, Schlumberger
Rodger Lacy, Weatherford
Karl LaFleur, Consultant
David Lagerlef, ConocoPhillips
Istvan Lakatos, University of Miskolc
David Larue, Chevron
Anders Lauvsnes, AVITO Consulting
Juan Li, Consultant
Leiming Li, Schlumberger
Lingling Li, Akzo Nobel Surface Chemistry
Zhuoyi Li, Schlumberger
Jenn-Tai Liang, University of Kansas
Jiajing Lin, Texas A&M University
Niels Lindeloff, Maersk Oil and Gas
Kai Liu, ExxonMobil
Yajun Liu, PetroTel
Sho-wei Lo, Shell
Elyezer Lolon, Marathon Oil
Sudhakar Mahajanam, ConocoPhillips
Srikant Mahapatra, ADMA-OPCO
Mark Mahoney, Lufkin Industries
Jorge Manrique, Hilcorp Energy
John Mason, BP
Michael Mayerhofer, Pinnacle Technologies
Paul McElfresh, Frac Tech Services
Michael McWilliams, Plains Exploration and Production
Steve Metcalf, Baker Hughes
Jennifer Miskimins, Colorado School of Mines
Jakob Monberg, Maersk Oil and Gas
Lee Morgenthaler, Shell
P.N. Mutalik, Williams Exploration and Production
Marek Pakulski, BJ Chemical
John Patterson, ConocoPhillips
Laurent Pirolli, Schlumberger
Maysam Pournik, University of Oklahoma
Edwin Quint, Shell
N.M. Rahman, Saudi Aramco
Varagur Rajan, Alberta Innovates
Muthukumarappan Ramurthy, Halliburton
Albertus Retnanto, Schlumberger
Lynn Rowlan, Echometer
Zhenhua Rui, Independent Project Analysis
Kenneth Saveth, Weatherford
Randall Seright, New Mexico Institute of Mining and Technology
Saeed Shad, Schlumberger
Hua Shi, BP
Alan Sibbit, Schlumberger
Somnath Sinha, ExxonMobil
Paul Skoczylas, ConocoPhillips
David Smith, ConocoPhillips
Mohamed Soliman, Texas Tech University
Elizabeth Spiteri, Hess
Mohammad Tabatabaei, Marathon Oil
Gabor Takacs, Miskolc University
Philippe Tardy, Schlumberger
Kevin Taylor, Taylor Industrial Research
John Terracina, Momentive
Raymond Tibbles, Schlumberger
Mason Tomson, Rice University
Pickard Trepess, Hunimex
Jyun-Syung Tsau, University of Kansas
Alberto Valdes, VetcoGray
Peter Valko, Texas A&M University
Claas Van Der Zwaag, Statoil
Nikos Varotsis, Technical University of Crete
Michael Vincent, Insight Consulting
Wei Wang, Rice University
Norman Warpinski, Pinnacle Technologies
David Watts, ConocoPhillips
Geoffrey Weighill, BP (retd.)
Leen Weijers, Pinnacle Technologies
Thomas Welton, Halliburton
Hector Wills, MI3 Petroleum Engineering
Nick Wolf, WM Consultants
Bailin Wu, CSIRO Petroleum
Jonathan Wylde, Clariant Oil Services
Peng Ye, Hess
Keita Yoshioka, Chevron
Mingdong Yuan, Chevron
He Zhang, Ryder Scott
Hong-Quan Zhang, University of Tulsa
"Joe" Yunxu Zhou, National Oilwell Varco
Murtaza Ziauddin, Schlumberger
Matthew Zielinski, Chevron