Amigos Energy Advisors, L.L.C.

Geologic Interpretation

  • John Sharry

    John Sharry is a petroleum geologist with over 30 years experience in exploration and production. His considerable expertise includes project management, geological modeling using Petrel, database creation/management, and seismic interpretation. John has been involved in large, integrated reservoir and field development studies worldwide and has taught a number of courses to industry on reservoir characterization, map projections, directional surveys, and the use of the Internet by geoscientists. John is registered in Texas as a Professional Geoscientist (Geology).

    John has extensive experience as a consultant for various multinational, integrated petroleum companies, national oil companies, independents, and seismic contractors in various countries and regions worldwide including the former Soviet Union, India, eastern Europe, South America, and the Middle East. Prior to starting his consulting practice, John worked 13 years with Gulf Research & Development Co. and Oryx Energy/Sun Oil Co. on a wide variety of assignments including projects in China, the Gulf of Mexico and throughout the western U.S. John has been active in various unconventional resource (shale gas / shale oil) plays worldwide. He has consulted for all of the major database vendors on the creation of directional survey databases.

    John obtained a Ph.D. in Geology from the Massachusetts Institute of Technology, an M.S. in Geology from the University of Rochester and a B.A. in Geology from Carleton College. He is an active member of the American Association of Petroleum Geologists (AAPG), the Dallas Geological Society, the Geological Society of America (GSA), the American Geophysical Union (AGU), the Society of Petroleum Engineers (SPE) and Society of Exploration Geophysicists (SEG). John has also published scores of papers and articles in various professional journals.

  • H. Edward Denman

    Edward Denman is a renowned geophysicist with nearly 30 years of experience in oil and gas exploration and producing. He holds degrees in both geology and geophysics with a masters in geophysics from the Georgia Institute of Technology, 1975. Ed’s experience includes both international and domestic projects requiring prospects and play identification, structural and sequence stratigraphic mapping, seismic and other geophysical surveys, and acquisitions, data processing, and contracts administration/QC. Projects completed include various offshore Gulf of Mexico and international areas with current experience in West Africa, Brazil and prior projects in Europe with associated discoveries.

    Ed’s experience and training was obtained from Exxon Corporation and affiliates from 1979-1990 where projects were completed in the Gulf of Mexico, Latin America and Europe. Subsequently, interpretation and consulting projects were conducted for the Calibre Consulting Services Company and TGS-Nopec Geophysical company from 1990-2000. During this time Excalibur Interpretation Company was co-founded to provide consulting and geophysical interpretation service projects. His prior experience includes work as an engineering geophysicist on major industrial and offshore drilling locations for site suitability and geo-hazards investigations with Dames and Moore and Fairfield Industries from 1974-1979.

    Ed is registered in Texas as a Professional Geoscientist (Geophysics) # 3141.

  • Gloria Eisenstadt

    Gloria Eisenstadt is an industry-recognized expert in structural geology. She has over twenty years of international experience in the analysis and interpretation of 2-D and 3-D seismic interpretation in complex structural settings; extensional, inversion, thrust belts, and salt/shale tectonics. She has managed large regional and basin studies integrating seismic interpretation with other data sets. Her worldwide experience includes: West Africa, North Sea Basins, Argentina and Brazil, the former Soviet Union, and Asia. Domestically she has worked on projects in Colorado, Utah, Oklahoma, Wyoming, Montana, California, and the Gulf of Mexico. Gloria teaches industry courses in seismic interpretation and structural geology.

    Prior to becoming a consultant Gloria worked at the Mobil Exploration and Producing Technology Center for 11 years as an internal consultant, researcher and technical trainer. Her research centered seismic interpretation of complex structures, restoration and cross section balancing and physical modeling. Gloria helped develop and run a state-of-the art physical modeling laboratory investigating the development of complex structures. She developed and taught in-house courses in structural geology.

    Gloria obtained her Ph.D. in Geology from the Johns Hopkins University, a M.A. and B.A. in Geology from Temple University. She is an active member in the American Association of Petroleum Geologists and the Dallas Geological Society.

  • Eduardo Gonzales

    Eduardo Gonzales has over twenty years of experience in oil and gas exploration, production and exploitation as a petroleum geoscientist. He has worked in domestic and international areas with major and independents companies, as a consultant and as an independent geoscientist. Over his career, he has been involved in different aspects of the oil and gas industry including prospect generation and evaluation, property acquisitions, reserve evaluation, marketing and sales of prospects, project management, wellsite supervision, seismic interpretation, presentations, governmental assignments, budgeting and other areas at levels ranging from regional studies to specific prospect ideas. He has worked with a diversity of industry professionals including drilling, reservoir, production, geology, geophysics, land, government and other disciplines, giving him a broad understanding of the industry. Ed is registered in Texas as a Professional Geoscientist (Geology) and is a Certified Petroleum Geologist (#3454) by the American Association of Petroleum Geology (AAPG).

    His areas of experience include the Midland Basin, Delaware Basin, Val Verde Basin, Central Basin Platform, Northwest Shelf of Texas and New Mexico, Tucumcari Basin, Anadarko Basin, Central Oklahoma, Kansas, Southern California, Eastern Shelf of Texas, Texas Gulf Coast, East Texas Basin, Rocky Mountains, Arkoma Basin, Northern Mexico and Venezuela. He has worked a variety of plays including structural, stratigraphic, carbonates, clastics, fractured shales and coal bed methane applying subsurface, 2-D and 3-D seismic, geochemistry, new drilling wells, reentries and workovers. He has worked for major companies such as Texaco, Tenneco, Diamond Shamrock/Maxus and Repsol-YPF. He has been directly involved with numerous prospects targeting Yates, San Andres, Glorieta, Clearfork, Abo, Wolfcamp, Strawn, Atoka, Morrow, Mississippian, Barnett, Siluro-Devonian/Hunton, Simpson, and Ellenburger/Arbuckle in Texas and Oklahoma, the Cretaceous of Venezuela and other projects.

    Ed holds a B.S (1978) and an M.S (1980) degree in geology from Texas Tech University. He has extensive training and continuing education through industry courses sponsored by AAPG, SEG, SPE, SEPM and local geological societies. He is a member of AAPG, the Society of Independent Professional Earth Scientists (#2903), the Dallas Geological Society, the West Texas Geological Society and the Society of Exploration Geophysicists (SEG). He has also served as an officer of the Dallas Geological Society.

  • Joana Vizgirda

    Joana Vizgirda has more than 15 years of petroleum industry experience including applied research, product development, consulting and teaching. Her expertise is broad-based and encompasses geological, geophysical and geochemical aspects of petroleum systems, with a focus on integrated computer basin modeling.

    While working at Gulf R&D and Mobil Oil, Joana was responsible for researching the influence of various physical processes, including sedimentation, thermal history, geochemical reactions, and fluid flow, on the development of hydrocarbon provinces, and for applying this research in a practical exploration context. She was involved in the early stages of computer applications to predictive generation models, and has developed, tested and evaluated both in-house and commercial basin modelling software. She has a working knowledge of Basin Mod, PetroMod, and Temis Pak. Her consulting experience is extensive and includes petroleum system studies in the U.S. and Canada, Europe, North and West Africa, Southeast Asia, Australia and the Caspian Sea region.

    Joana holds a Ph. D. in Geology from the California Institute of Technology and a B.A. in Geophysics form the University of Chicago. She is fluent in English and Lithuanian and is casually proficient in German and French.


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