Q. Which RFDbase databases are the best for basin modeling?
A. All of our databases contain information valuable for constraining basin models:
- Oil — The oil database contains interpreted maturity and oil family data that help constrain basin thermal history and migration trends. Interpretation confidence is also listed to help guide prioritization for the analyst.
- Source Rock — The source rock database contains TMax, S2, measured vitrinite, and calculated vitrinite equivalent data that can be used to constrain basin temperature history. Additionally, the S2, TOC, and HI data can be used to define source rock type and, therefore, kinetic models.
- Gas — The gas database contains gas isotope and composition data that can help calibrate maturity and source facies models.
- PVT — The PVT database provides key information on reservoir temperature and pressure, as well as basic composition data. This can be excellent calibration data for regional models, particularly in unconventional cases, where operators lack knowledge of “original” conditions.
- Formation Water — The data housed in the formation water database is provided by the USGS and was not generated by GeoMark. This information is basic, but can be useful in understanding hydrodynamic trends in basins.
Q. I don’t want the oil geochemical interpretation, just the raw data. Can I access that?
A. When downloading oil data from RFDbase, you will notice all of the interpretation columns are grouped together and can easily be removed. Raw machine files can also be downloaded from RFDbase. Contact your sales representative for help with generating a customized report.
Q. What are the geochemical family and maturity interpretations based on?
A. The oil families and maturity interpretation are based on GeoMark’s proprietary methods described in: Zumberge, J.E., 1987, Prediction of source rock characteristics based on terpane biomarkers in crude oils: a multivariate statistical approach, Geochimica et Cosmochimica Acta, v. 51, p. 1625-1637, and more recently in Zumberge et al. 2016, Petroleum Geochemistry of the Cenomanian Turonian Eagle Ford Oils in South Texas, in J. A. Breyer ed. AAPG Memoir 110, p. 135-165. Contact the GeoMark Director of Reservoir Geochemistry for a demonstration of our interpretation process.
Q. What are all the methods that GeoMark offers for maturity assessment?
A. Obtaining an accurate maturity assessment is critical for all petroleum system work. GeoMark has several analytical methods that assess maturity on a variety of sample types, including:
- Rock (cuttings, core, and outcrop)— Pyrolysis and Vitrinite
- Gas — Isotopes
- Rock Extract — HRGC, GCMS, QQQ, isotopes
- Oil — HRGC, GCMS, QQQ, isotopes