Amigos Energy Advisors, L.L.C.

Seismic Operations QC, Project Management, and Field Processing

  • Dave Biersner
    Dave has almost 30 years experience in the seismic industry working for geophysical companies (Western Geophysical, Geco & Eagle Geophysical). His experience includes land, transition zone and marine operational environments throughout North America and some foreign assessments. For the past 13 years Dave has been working as an independent Field Quality Control Representative and Program Manager throughout the continental U.S. (Gulf Coast, Mid-Continent, NE-US, CA.)

    He is experienced with all aspects of seismic work: including permitting, surveying, drilling and
    recording. His primary area of expertise is field quality control and program management of
    Geophysical Contractors.

    Dave Graduated from Washington State University with a Bachelors of Science degree in Geology and is
    a member of the SEG, AAPG, HGS and CCGS. He routinely uses Mesa 3D Design, ArcView, GPSeismic and
    Microsoft Office to aid in the maintenance of high standards of quality assurance.

  • Stephen C. Cymbala
    Steve brings almost 40 years of hands-on seismic experience when he arrives on your crew.  An Eagle Scout, he earned a University degree in art, became a cartographer in the Army and has an affinity for seismic challenges.

    He has 15 years of practical experience in field crew acquisition disciplines and a year of processing with geophysical contractors.   For most of the last 25 years he has been a consulting seismic QC.  His strong suit is field operations and he has become one of the industry’s more respected seismic scouts.

    Steve’s diverse exploration expertise (2-D & 3-D) includes arctic (land, sea, ice), desert (transition, big dune, gravel plain), jungle (man-portable, heli-portable), swamp (highland, transition, shallow marine), mountain (conventional, man-portable, heli-portable) and deep water marine.  He has worked extensively in Alaska’s arctic, South American jungles and mountains, African deserts and mountains, Asia’s deserts and steppes, Europe and domestically in much of the American west.

    Steve maintains crew HSE standards as part of a strict QC package. He adapts quickly to nearly any situation – weather, terrain and languages.  He is proficient in Spanish and has survival capabilities in several other languages.

  • Robert Cross
    Robert Cross is a licensed professional electrical engineer with extensive experience in seismic data acquisition instrumentation. In addition he has extensive computer programming experience related to seismic data acquisition instrumentation test analysis. He is an expert on acquisition instrumentation filter characteristics.

    Robert worked for twenty-seven years for Texaco Inc. where he was responsible for worldwide on-site quality control tests of seismic field equipment and operations. His experiences include projects in Brazil, Bolivia, Argentina, Colombia, Guatemala, Trinidad, Nigeria, Angola, Morocco, Tunisia, Kazakhstan, China, Thailand, Indonesia, the North Sea, Continental US, and the Gulf of Mexico. He provided a broad range of technical support for the ten land and one marine Texaco-owned domestic seismic crews. He designed an extensive software package that enabled acquisition instrumentation tests to be analyzed quickly and in Texaco’s facilities. He developed a comprehensive software library of the phase characteristics of the acquisition filters of all models of seismic acquisition instruments that enabled their acquisition data to be phase-corrected during seismic processing.

    Robert has an MSEE from the University of Houston and a BSEE from the University of Arkansas. He has a P.E. license from the State of Arkansas. He is currently a member of the Society of Exploration Geophysicists (SEG).

  • David Pendergrass
    Dave brings over 30 years of experience in land seismic data acquisition, processing and quality control. His major strengths and proven skills are in quality control of seismic crews, field processing, recording crew management and instrumentation. His expertise includes QC and management of large scale complex 2D and 3D surveys, extensive field processing QC and processing experience using the ProMAX system.

    Dave began his career with Mobil Exploration and Production Services in the land seismic recording division, advancing to Sr. Observer on the R&D crew, in which numerous projects were carried out using the new technology of large channel count 2D and 3D recording methods, difficult to image environments and new seismic source technology. His responsibilities included managing the recording operations and resolving problems during recording operations. After Mobil decommissioned all of their company operated land and marine crews Dave was assigned to provide field processing and quality control services using newly fielded PC-based processing systems for company contracted seismic recording projects worldwide including assignments in Turkey, Algeria, Turkmenistan, Peru, Bolivia, in addition to domestic US operations.

    With his skills in field processing well-honed Dave left Mobil to pursue a consulting career in 1992 for long term assignments in Algeria. In 1995 he and a business partner founded Image Geophysical and began providing field processing services with the ProMAX processing system during the system’s infancy. He continues to provide those services with the newly upgraded highly compute intensive Linux version of ProMAX that is required for quality control of the extremely large channel count 3D recording operations that are now the norm.

    Dave holds an A.S. Degree in Electronics Technology from Texas A&M, has attended numerous processing, recording systems courses and is an active member of the SEG.

  • Jackie Portsmouth
    Jackie Portsmouth has over 20 years of experience in the international oil & gas industry specializing in the field of Geomatics. Jackie’s ability to integrate technical survey objectives with practical and cost effective solutions has brought him recognition as an innovative leader in his field. Over the years he has consistently delivered strong technical and business results to the planning, budgeting, and organization of projects worldwide. Jackie has been adept at creating rapport and long term relationships with co-workers of different cultural backgrounds ensuring projects are completed successfully. Jackie is a team player and can be counted on to fit in well with a multi-disciplined project team.

    Jackie’s work experience includes 17 years with Canadian Superior Oil Co. and Mobil Oil Corporation in Canada, the U.S., Indonesia and various countries in South America, North Africa, Middle East, and the former Soviet Union. His experience includes: managing large 2D and 3D seismic survey projects; performing and supervising all types of GPS surveys (establishing geodetic control, real time positioning, etc.) for locating oil & gas wells, seismic surveys and pipeline construction; integrating remote sensing technologies (satellite imagery, digital air photography, and airborne scanning laser) for various project applications; developing survey processing software for 2D and 3D land seismic surveys; and deriving all types of geodetic datum calculations/transformations.

    Jackie is an active member of the Society of Exploration Geophysicists (SEG), Canadian Society of Exploration Geophysicists (CSEG), American Congress of Survey and Mapping (ACSM), Institute of Navigation (ION), and Alberta Geomatics Group (AGG). He is also actively involved in the Canadian Association of Petroleum Producers. Jackie has written geomatic specification and procedure manuals for both internal company and general industry uses, as well as authored articles for technical journals in his field. Jackie attended the Northern Institute of Technology (N.A.I.T) in Edmonton Alberta specializing in petroleum land surveying. He has kept abreast of the latest geomatics technological developments through continuous education and subsequent field applications.

  • Stefan M. Seyb
    Stefan Seyb is a geophysicist with almost thirty years in the geophysical industry. He has worked in twenty-two countries on five continents, on 2D & 3D land and marine surveys. His strength is in seismic project management, on-site quality control and field processing. He worked several years in geophysical research and is co-author of a patent on marine seismic interference mitigation. Stefan’s last eight years with ExxonMobil gave him a solid grounding in HSE systems and methodology for ensuring that field operations are conducted in a safe manner with no harm to personnel or the environment.

    Stefan worked twenty-one years for Mobil and eight years for ExxonMobil. In his years with Mobil, he initially worked in seismic processing, including six years as processor and Lead QC onboard the seismic vessels T.W. Nelson and Mobil Search. He later worked in the Seismic Acquisition group, responsible for survey design, contracting and on-site QC and field processing. With ExxonMobil, he first worked in Upstream Research on projects involving seismic interference mitigation, high-fidelity Vibroseis and electromagnetics. After moving to the Geophysical Operations group, he managed numerous land and marine seismic surveys and in 2004 served as Principal Scientist onboard a vessel conducting CSEM (Controlled Source Electromagnetic) surveys. As Field Supervisor in Germany for a year in 2005, he managed a 3D land seismic program with complex environmental and regulatory requirements. Since retiring from ExxonMobil in 2007, Stefan has worked as client rep on 3D surveys in Mexico and Egypt and a site survey in the Falklands in which he gained experience in Multibeam and coring operations.

    Stefan has a B.S. in Electrical Engineering from Oregon State University, an M.S. in Geophysics from the University of Hawaii and an M.A. in International Management Studies from the University of Texas at Dallas. He is an active member of the Society of Exploration Geophysicists (SEG) and a registered Professional Geoscientist (Geophysics) in the State of Texas. His UKOOA Medical and HUET certifications are kept current for marine work. He has a working proficiency in French and Spanish.

  • Michael Verhoeks
    Mike’s career spans over 35 years in the geophysical industry, starting as a geophysical data processor with Western geophysical. Eventually, Mike managed small processing centers in Bakersfield, Ca. and Perth, Western Australia. With 3D seismic acquisition in its infancy, Mike helped design and implement some of the earliest proprietary 3D designs with ARCO Oil and Gas Co. at its Plano, Texas Research Center. His interaction with ARCO’s seismic acquisition group on collaborative 3D designs led him away from processing and into the seismic acquisition side of the exploration business.

    As a quality assurance geophysicist Mike has seen extensive experience in the continental US and Alaska, most recently for unconventional resource plays in S. Texas. For a period of nearly 2 years, he served as ARCO Alaska’s Acquisition Geophysicist. During that time, ARCO Alaska designed and implemented 3D surveys on the North Slope, a bottom cable transition zone 3D in the Cook Inlet and some “Poulter method” seismic in the Kenai Peninsula. Mike’s international assignments have included projects in Ethiopia, Syria, Kazakhstan, Australia and Turkey. His experience includes VSP and HSE QC as well as conventional seismic processing and acquisition oversight.

    Mike holds a B. S. degree in Geology from Baylor University and is a member of the Society of Exploration Geophysicists.

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