Mr. Terry B. Eschner
SENIOR ASSOCIATE CONSULTANT - GEOSCIENTIST
Mr. Eschner is a geologist with over 24 years' of experience in exploration and production, prospect generation and evaluation, structural analysis, sequence stratigraphy, core studies, sedimentology, seismic interpretation, reservoir characterization and reservoir management. He has a strong background in the thrust belts of Colombia, Bolivia, Argentina, Wyoming and Montana. He has exploration and production experience in Algeria, Kuwait, Mexico, Colombia, Venezuela, Bolivia, Argentina, Guyana, and many basins in the U.S.A. including those in the Mid-Continent, California and Alaska. He is highly skilled in prospect generation and evaluation, identifying deeper-pool, step-out and behind-pipe opportunities, regional and field-scale structural analysis, siliciclastic core description and the integration of geological, geophysical, petrophysical and engineering data. He has strong expertise in working with deposits from various depositional environments, particularly eolian, fluvial, deltaic and shallow marine. He has used the Statistical Curvature Analysis Technique to evaluate dipmeters from hundreds of wells.
PROFESSIONAL EXPERIENCE
1992 to Present - Consulting Geologist/Geophysicist (President, Sarlan Resources, Inc.)
Venezuela
Key member of integrated study team evaluating the vast heavy-oil reservoirs of the Miocene Bachaquero Member of the Laguinillas Formation in the Bach-01 Area of Lagunillas Field, Lake Maracaibo, Venezuela. Primary responsibilities include evaluating stratigraphy, depositional environments and siliciclastic core sedimentology and identifying exploitation opportunities.
Key member of integrated study team evaluating the Eocene Misoa, Oligocene Santa Barbara and Miocene La Rosa reservoirs in Block VI Lamar Field, Lake Maracaibo, Venezuela. Primary responsibilities were evaluating the complex geologic structure, describing and interpreting core, developing a sequence stratigraphic interpretation, characterizing the reservoirs and developing prospects and leads. He played a key role in significantly increasing field production and recoverable reserves. He was co-originator of an exploration prospect that led to discovery of over 50 million barrels recoverable oil reserves, and played key roles in identifying development opportunities that have been successfully exploited, at times collectively producing at rates over 12,000 BOPD.
Key member of integrated study team evaluating the Eocene Misoa and Oligocene Santa Barbara reservoirs in Block V Centro Field, Lake Maracaibo, Venezuela. Primary responsibilities were evaluating the complex geologic structure, describing and interpreting core, developing a sequence stratigraphic interpretation, characterizing the reservoirs and developing prospects and leads.
Key member of integrated study team evaluating the Eocene Misoa and Oligocene Icotea reservoirs in Urdaneta La Salina Field, Lake Maracaibo, Venezuela. Primary responsibilities were evaluating the complex geologic structure, describing and interpreting core, developing a sequence stratigraphic interpretation, characterizing the reservoir and developing prospects and leads.
Key member of integrated study team evaluating the Eocene Misoa and Oligocene Santa Barabara reservoirs in Lagunillas Lago Field, Lake Maracaibo, Venezuela. Primary responsibilities include evaluating the complex geologic structure, describing and interpreting core, developing a sequence stratigraphic interpretation, characterizing the reservoir and developing prospects and leads.
Participated in integrated interpretation of the Misoa Formation in Block VIII and in Ceuta Field, Lake Maracaibo, including stratigraphic and structural analysis and developing models for use in reservoir simulation.
Colombia
Lead geologist of an integrated team that conducted a comprehensive geological, geophysical, petrophysical and engineering analysis of Cupiagua Field, Colombia. Role included generating balanced, restorable cross sections using COGNISEIS GEOSEC software. Mr. Eschner was co-originator of an exploration prospect that led to discovery of 50 million barrels recoverable oil reserves in an imbricate thrust sheet located between Cupiagua and Cusiana fields.
Project Leader of an integrated team that produced a detailed geological, geophysical and petrophysical characterization of Cusiana Field, Colombia. Responsible for reservoir characterization of the Guadalupe, Barco and Mirador formations, identifying and mapping reservoir and nonreservoir layers, determining and mapping reservoir parameters, building a stratigraphic model for use in reservoir simulation, reviewing the structural interpretation, overseeing seismic and petrophysical studies, writing a comprehensive report and making recommendations for optimal field management and development.
Responsible for technical analysis of the Llanos Foothills Belt (Eastern Cordillera) and the northern Llanos Basin, Colombia, during ECOPETROL's first licensing round by competitive tender in 1994. Responsibilities included stratigraphic and structural analyses, seismic interpretation, prospect generation, risk analysis and reserve estimation. Mr. Eschner generated prospects that resulted in three exploration blocks being successfully contracted to petroleum companies - these were the only three blocks that were successfully placed out of 22 blocks offered during the licensing round.
Involved in the geological, petrophysical and geophysical analysis of Volcanera Field, Colombia. Primary responsibilities included evaluation of structure and stratigraphy and determining maximum, minimum and most-likely reserve estimates.
Played a key role for a major oil company in the evaluation of opportunities in Colombia during Ecopetrol's licensing round in 2000 (Ronda 2000). The client successfully acquired several exploration-exploitation blocks, in part due to the efforts of Mr. Eschner.
Other International
Closely involved in geological analyses of giant Ourhoud and Rhourde El Krouf fields in Berkine Basin, Algeria. Role includes stratigraphic interpretation, core description, leading core short courses and building geologic models for simulation. He has been describing TAGI and Carboniferous core from these fields for the past 7 years and currently is the sedimentologist for the Sonatrach Ourhoud Organization, which is the operating consortium that is developing Ourhoud Field.
Involved in geological analysis of Sierra de Aguarague Field in the thrust belt of northern Argentina. Evaluated structural geometry of the field and reservoir characteristics of the fractured sandstone reservoir.
Involved in reservoir characterization of Samaria Field, Mexico. Responsible for mapping and integrating gross isolith maps, net isolith maps, net effective isolith maps, effective porosity maps and petrophysical data.
Participated in the geologic interpretation, correlation and mapping of reservoir intervals in the Rhadatain and Sabyriah Fields, Kuwait.
Domestic USA
Deeply involved in the evaluation and exploration of 2.2 million acres of NANA (the Native American regional corporation for northwest Alaska) land in the vicinity of Kotzebue Sound, northwest Alaska. Responsible for project promotion, source rock geochemistry-maturation studies, structural and stratigraphic analyses, seismic interpretation, prospect generation, risk analysis and reserve estimation.
Lead geologist in evaluating Stevens and Shallow-Oil-Zone reservoirs in giant Elk Hills Field, California, as part of equity determination studies.
Conducted regional multi-client sequence stratigraphic study of the Eocene Yegua Formation in the Houston Salt Basin, Gulf Coast Region. Analysis included the integration of approximately 1,000 wells and 3,000 miles of seismic data, describing numerous cores, identifying prospective trends and constructing regional maps and stratigraphic cross sections.
Actively involved in prospect generation in USA basins. Generated 14 prospects in Oklahoma and Wyoming that were successfully turned to industry. His efforts led to a discovery well in Oklahoma in 2000 that was completed with an IPF of 288 BOPD plus 400,000 CFGPD from the Ordovician First Bromide Sandstone of the Simpson Group at about 8,500 feet depth. He currently has working interests in producing properties in Oklahoma and California, and interests in exploration prospects and projects in Alaska, Oklahoma, Kansas and Wyoming.
1992 - Senior Development Geologist, Chevron Production Company
Production geology for the Redwash Field, eastern Utah. As the primary geologist assigned to the field, responsibilities included selecting wells for workovers, recompletions, or abandonment, finding exploitation opportunities to add incremental reserves, evaluating feasibility of water flood realignment, reservoir characterization, interpretation of depositional environments, and conducting sequence stratigraphic analysis by utilizing seismic data and well logs.
1989 to 1992 - Senior Exploration Geologist (Project Coordinator), Chevron U.S.A., Inc.
Supervised a team of geologists, geophysicists and technicians exploring the Wyoming-Montana Thrust Belt. Completed detailed integrated study utilizing time- and depth-migrated seismic data, structural cross-sections balanced using a kinematic modeling method, SCAT analysis of dipmeter data, surface geology, geochemistry, correlation studies and reservoir analysis. Work involved land-lease programs, environmental assessments and environmental impact statements.
1987 to 1989 - Senior Research Geologist, Chevron U.S.A., Inc.
Reservoir characterization of the Miocene Monarch Sandstone to support a steam-foam field trial in Midway Sunset Field, San Joaquin Valley, CA. Study incorporated analysis of 600 feet of continuous core, wireline logs and outcrop data. Core analysis included logging and description, scanning electron microscopy, thin-section petrography, X-Ray Diffraction, geochemistry, and porosity-permeability-saturation analyses of plugs taken at one-foot intervals, including both air and brine permeability analyses. Wrote part of a Chevron manual explaining how to interpret depositional environments from core. Developed and taught short courses and seminars on eolian sedimentology, the characterization of heterogeneous reservoirs and reservoir management. The courses were designed to teach teams of geologists and engineers to better manage Chevron's oil and gas fields.
1986 to 1987 - Explorationist, Chevron U.S.A., Inc.
Performed a geological and geophysical interpretation of structurally complex area along the northern margin of the Arbuckle Mountains, Oklahoma. Established seismic depth-migration methodology that was viewed as major technology breakthrough.
1982 to 1986 - Geologist, Chevron U.S.A., Inc.
Generated prospects and performed geological studies in the Sherman and Ardmore-Marietta Basins of North Texas and Oklahoma.
1987 to 1980 - Geologist, Occidental Petroleum Corp.
Mapped the surface geology of an exploratory concession located in the Sub Andean Mountain Thrust-Belt Province of Argentina and the adjacent Neuquen Basin. Mapping resulted in the drilling of an exploratory well that was tested at a rate of 3,000 BOPD. Studied outcrops in the Sub Andean Mountain Thrust-Belt Province of southern Bolivia. Data were used to develop an exploration model for the adjacent Beni-Chaco Basin.
EDUCATION
M.A. Geological Sciences, University of Texas at Austin, 1980 - 1982 Honor: Recipient of Texaco Fellowship, 1981-1982.
B. S. Geological Sciences, San Diego State University, 1975 - 1979
PROFESSIONAL MEMBERSHIPS
American Association of Petroleum Geologists Society of Economic Paleontologists and Mineralogists Rocky Mountain Association of Geologists
PUBLICATIONS
Eschner, T.B. and Kocurek, G.A.: Origins of Relief along Contacts between Eolian Sandstones and Overlying Marine Strata, AAPG Bulletin; 1988.
Eschner, T.B. and Kocurek, G.A.: Marine Destruction of Eolian San Seas: Origin of Mass Flows, Journal of Sedimentary Petrology; 1986.
Eschner, T.B., Luneau, B. A., Gomez, E. and Scott, A.J.: The Downdip Yegua-Cook Mountain Play of the Houston Salt Basin: Exploration Opportunities In Basin Floor Fans, Slope Fans, and Prograding Complex Sandstones, (Abs.), American Association Petroleum Geologists, Annual Convention; 1994.
LANGUAGES
English - Fluent Spanish - Conversational