I emphasize principles and critical thinking over mechanics and try to show students how logical reasoning can help them improve their understanding of subjects and mastery of the materials. I use plenty of examples and when it comes to tests and assignments strive to teach students to understand questions first and to recognize what information is given and what is unknown or asked for.
I am a geophysicist with top-level knowledge in physics, math and earth sciences. I have taught and mentored younger folks throughout my career and have always been praised for being patient, methodical and helping students develop their own thought process
Houston, TX 77094
Looking for opportunities to fulfill interests in teaching, research and technical writing, lifelong aspirations. Skilled and with in-depth knowledge in using geophysical technology for oil and gas exploration and production. Solid background and education at highest level in physics, math, engineering and earth sciences. Flexible and adaptable, willing to take and handle risk and uncertainty. Focused and persistent worker. Good communication and team working skills. Key competencies:
Clients / Specialists Collaboration
U. of Houston, Geosciences Dept. Fall 2003 – Spring 2004
Teaching Assistant, taught Physical Geology Lab, tutored undergraduate students
Universidad Nacional Science Dept., Bogota, Colombia 2002
Adjunct Professor, graduate level Geophysics seminar
UNAB University Computer Science Dept., Bucaramanga, Colombia 1999 - 2000
Adjunct Professor, Differential Equations undergraduate course
Enago, Freelance Editor 2016 - 2017
Special Section Associate Editor, Interpretation, an SEG Journal 2016 - 2017
Assistant Editor, Geociencias Aplicadas Latinoamericanas, an EAGE Journal 2015 - 2016
Geophysical Society of Houston
Journal Editor 2010 - 2012
Assistant Editor 2009 - 2010
SEG Translation Committee Member 2007 - 2011
Reviewer of papers for Geophysics, and for annual SEG and EAGE meetings since 2008 to dat
MURPHY OIL, WORLDWIDE EXPLORATION, HOUSTON, TX 2017 – 2020
Senior Geophysicist, seismic reservoir characterization and imaging Subject Matter Expert (SME)
Provided advice in seismic reservoir characterization and imaging assisting projects in New Ventures, Exploration and Development. Projects offshore (US GOM, Mexico, Brazil, Australia, Vietnam, West Africa) and onshore (Eagle Ford)
Wide range of projects involving hands-on work and/or managing and collaborating with 2-3 contractors and 8-10 vendors
Developed and implemented dedicated workflows for seismic reservoir characterization and seismic imaging including rock physics,seismic modeling, AVO and seismic attributes, seismic inversion, velocity model building and signal processing for conventional and unconventional reservoirs
Contributed to a discovery and definition of appraisal and followup opportunities offshore Mexico
Rock physics and AVO modeling in US GOM and offshore Mexico combined with proprietary model building and depth imaging, that provided key input for prospect definition and evaluation
Colored (EEI), simultaneous and stochastic inversion in offshore Mexico and Brazil, used to evaluate discovered resource (DRO) and exploration opportunities
Multiclient WAZ and NAZ processing in deepwater Mexico and Brazil
BP, Seismic Imaging Flagship, Houston, TX 2011 – 2016
Providing leadership and expertise developing top-level land seismic imaging capabilities. Delivering technical solutions through research, deployment and hands-on processing.
Research on seismic adaptive optics, and on near-surface effects in imaging and signal processing, which resulted in a patent for an innovative methodology.
Research on fracture characterization using azimuthal seismic anisotropy delivering updated understanding of state of the art as well as initial results in benchmarking internal and contractor's toolkit.
Designated as Land Seismic Processing Expert in 2015 (1 of 3 company-wide).
Served as Subject Matter Expert delivering training in land data processing and imaging which ensured recent hires understood and applied technical concepts according to industry best practices.
Repsol, Geophysical Technology, Houston, TX 2008 – 2011
Seismic attributes specialist delivering solutions in seismic inversion and AVO for prospect maturation, reservoir characterization and shallow hazards assessment. Projects in Suriname-Guyana, Trinidad, West and North Africa, Indonesia, Russia and GOM.
Analyzed AVO and attributes data of a North Africa prospect and provided findings that were confirmed later by drilling operations.
Performed modeling, AVO, inversion and rock properties work for postmortem well studies and for a new prospect in South America, contributing to reducing drilling risk over 25%.
GeoTomo LLC, Houston, TX 2008
Leading processing and imaging service efforts. Participant in software development providing requirements, guidance and testing on software issues and needs arising from service work.
Successfully completed pilot time and depth processing and imaging project in data from North Africa leading to client assigning major processing project on extended dataset.
Provided technical support to client processing companies in South America, resulting in enhanced company reputation and continued business.
Occidental Oil and Gas, Worldwide Exploration, Houston, TX 2007
Geophysicist, Growth Projects
New career path as a seismic interpreter identifying prospects and drilling locations and contributing to project evaluation and economics.
Defined leads for stepout and wildcat drilling from challenging 3D seismic in Argentina, increasing size of opportunities portfolio by over 50%.
Filled in into project management role for a 200 Km2 land 3D seismic acquisition in Peru, achieving timely and successful completion
University of Houston, Geoscience Dept., Houston, TX 2003 - 2007
Research and Teaching Assistant
Research on improving imaging resolution and fracture detection from seismic attributes
Taught Physical Geology Lab, tutored undergraduate students.
PhD Geophysics, University of Houston. Dissertation research on methods to improve resolution of prestack migrated seismic images.
Master of Science Geophysics, Colorado School of Mines.
Etgen, J.T, Perez, G. and Zhou M., 2013, System and method for seismic adaptive optics, WO(concealed information) patent.
Perez, G., and K. J. Marfurt, 2008, Warping prestack seismic data to improve stack quality and resolution, Geophysics, 73, P1-P7.
Perez, G., and K. J. Marfurt, 2008, New azimuthal binning for improved delineation of faults and fractures, Geophysics, 73, S7-S15.
Perez, G., and K. J. Marfurt, 2007, Improving lateral and vertical resolution of seismic images by correcting for wavelet stretch in common-angle migration: Geophysics, 72, C95-C104.
Perez, G., and K. J. Marfurt, 2006, Improving vertical and lateral resolution by stretch-free, horizon-oriented imaging: Earth Sciences Research Journal, 10, 147-155.
Perez, G., and K. Larner, 2004, The quality of the surface-consistency assumption in short-wavelength static correction: Geophysics, 69, 1091-1101.
Perez, G., K. J. Marfurt and Susan Nissen, 2007, Azimuthal binning for improved fracture delineation, 77th Annual International Meeting, SEG, Expanded Abstracts, 931-935.
Perez, G., and K. J. Marfurt, 2006, Fine-tuning your seismic image: prestack data warping to improve stack: 76th Annual International Meeting, SEG, Expanded Abstracts, 2475-2478.
Perez, G., and K. J. Marfurt, 2006, Correcting for wavelet stretch in common-angle migration improves vertical and lateral resolution: 76th Annual International Meeting, SEG, Expanded Abstracts, 1834-1837.
Perez, G., and K. J. Marfurt, 2005, Improving vertical and lateral resolution by stretch-free, horizon-oriented imaging: 75th Annual International Meeting, SEG, Expanded Abstracts, 1834-1837.
Montes, L., and G. Perez, 2003, Modeling and removal of back-scattered noise from rough topography in land seismic data: 73rd Annual International Meeting, SEG, Expanded Abstracts, 1977-1980.
Larner, K., G. Perez, E. Jenner, and T. Salinas, 1996, The quality of the surface-consistency assumption in residual-statics estimation: 66th Annual International Meeting, SEG, Expanded Abstracts, 1646-1649.
HONORS AND AWARDS
Co-inventor on patent WO (concealed information) “System and method for seismic adaptive optics”.
Awarded 2005-2006 and 2006-2007 SEG Foundation scholarships.
Awarded 2004 Shell – UH Geosciences Dept. scholarship for outstanding academic achievement.
Awarded RA and TA scholarships, 2003-2007, Univ. of Houston, Geosciences Dept.
LANGUAGES AND COMPUTER SKILLS
Fluent in English and Spanish and knowledgeable of French.
Industry-standard seismic interpretation software (Landmark, Geoframe), AVO and inversion software (Hampson and Russell), time and depth processing software (Promax/SeisSpace, Geodepth, Seisup,Vista) and academic software (SU, Seplib)
C, Fortran, UNIX shell script programming. Intermediate knowledge of Matlab, C++ and Python.
Familiar with UNIX, Linux and MS Windows environments and tools.
Coding of signal processing, finite-difference and Kirchhoff imaging and modeling, ray tracing and map migration algorithms.
Some experience writing and debugging parallel processing codes in OpenMP and MPI
PROFESSIONAL AND COMMUNITY
Member of the SEG Translation and SEG Foundation Projects of Merit Review Committees, 2007 – 2009
Organizer and Co-chair for “Multiazimuth” 2009 Meeting and Co-chair for “Offshore Application Studies” 2007 SEG Meeting sessions
SEG representative in Organizing Committee and Co-chair for “Seismic Acquisition and Imaging” session, 2008 Conference on Unconventional and Conventional Resources, Cartagena, Colombia.
Authored 15 papers and presentations for publication in peer-reviewed journals (Geophysics) and technical meetings and numerous internal research and technical reports.
Past Member of the Editorial Boards of Revista Geofísica Colombiana and of CT&F, Ecopetrol´s journal on petroleum technology.
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