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Arkadiusz (Arek) Derkowski
Date of birth: Jan. 8th, 1975

E-mail:  ndderkow@cyfronet.pl

Institute of Geological Sciences
Polish Academy of Sciences
Research Centre in Cracow
Senacka 1, 31-002 Kraków, Poland

          +48 12 3705 249 (Office)
          +48 12 422 19 10 (Switchboard)

Personal website:  


June, 2013
D.Sc. (habilitation) in Earth sciences; Institute of Geological Sciences, Polish Academy of Sciences, Krakow (Poland)
Sept., 2003
Ph.D. in Earth sciences; Institute of Geological Sciences, Jagiellonian University, Krakow (Poland)
June, 1999
M.Sc. in geological sciences; Institute of Geological Sciences, Jagiellonian University, Krakow (Poland)
Scientific interests:
clay minerals, physiochemical properties of mineral surfaces, K-Ar isotope dating; mineralogical applications in oil and gas exploration; quantitative mineral phase analysis; mathematical modeling: optimization engines and curve fitting; mineral-organics interactions
Work and research experience
  • Since 07/2013 - Institute of Geological Sciences, Polish Academy of Sciences, Krakow (Poland);
    Professor, head of the Clay Minerals Laboratory

  • Since 7/2007 - Chevron ETC, Houston, TX (USA); Scientific Consultant (full-time and part-time)

  • 10/2011-07/2013 - Institute of Geological Sciences, Polish Academy of Sciences, Krakow (Poland); Senior Researcher

  • 6/2009-10/2010 - University of Alberta, Edmonton, AB (Canada); Postdoctoral Researcher; supervisor of the clay minerals laboratory.

  • 10/2008-03/2009 - Baker Hughes Co., Calgary, AB (Canada); Senior Mineralogist; interpretation of geochemical wire-log tools for shale gas exploration.

  • 3/2006-12/2007 - University of California, Riverside, CA (USA); Postdoctoral Researcher, research: interactions of clay minerals and organic matter.

  • 1/2004-3/2006 - Institute of Geological Sciences, Polish Academy of Sciences, Krakow (Poland); Senior Researcher, clay minerals and K-Ar geochronology; supervisor of the laboratories unit
Scientific Publications (excluding conference abstracts and popular papers)
Derkowski A., Szczerba M., Środoń J., and Banaś M.; Radiogenic Ar retention during solid-state clay minerals transformation. Geochimica et Cosmochimica Acta, in review.
Kuila U., McCarty D.K., Derkowski A., Fischer T.B., and Prasad M.; Total porosity measurement in gas shales by the water immersion porosimetry (WIP) method. Fuel, in review.
Derkowski A., Bristow T.F., Wampler J.M., Środoń J, Marynowski L., Elliott W.C., and Chamberlain C.P. (2013) Hydrothermal alteration of the Ediacaran Doushantuo Formation in the Yangtze Gorges area (South China). Geochimica et Cosmochimica Acta, 107, 279-298
Drits V.A., McCarty D.K., and Derkowski A. (2012) Mixed-layered structure formation during trans-vacant Al-rich illite dehydroxylation. American Mineralogist, 97, 1922-1938.
Derkowski A. and Bristow T.F. (2012) On the problems of total specific surface area and cation exchange capacity measurements in organics-rich sedimentary rocks. Clays and Clay Minerals, 60, 348-362.
Drits V.A., Derkowski A., and McCarty D.K. (2012) Kinetics of partial dehydroxylation in dioctahedral 2:1 layer clay minerals. American Mineralogist, 97, 930-950.
Derkowski A., Drits V.A., and McCarty D.K. (2012) Nature of rehydroxylation in dioctahedral 2:1 layer clay minerals. American Mineralogist, 97, 610-629.
Derkowski A., Drits V.A., and McCarty D.K. (2012) Rehydration in a dehydrated-dehydroxylated smectite in environment of low water vapor content. American Mineralogist, 97, 110-127.
Bristow T.F., Bonifacie M., Derkowski A., Eiler J.M. and Grotzinger J.P. (2011) A hydrothermal origin for isotopically anomalous cap dolostone cements from South China. Nature, June 2 2011, 747, 68-72.
Drits V.A., Derkowski A., and McCarty D.K. (2011) Kinetics of thermal transformation of partially dehydroxylated pyrophyllite. American Mineralogist, 96, 1054-1069.
Drits V.A., Derkowski A., and McCarty D.K. (2011) New insight into the structural transformation of partially dehydroxylated pyrophyllite. American Mineralogist, 96, 153-171.
Raiswell R., Reinhard C.T., Derkowski A., Owens, J., Bottrell S.H., Anbar A.D., Lyons T.W. (2011) Formation of syngenetic and early diagenetic iron minerals in the late Archean Mt. McRae Shale, Hamersley Basin, Australia: New insights on the patterns, controls and paleoenvironmental implications of authigenic mineral formation. Geochimica et Cosmochimica Acta, 75, 1072-1087.
Derkowski A. and McCarty D.K. (2010) ChemRock-BestRock: Advanced Tools for Formation Evaluation. bLog Formation Evaluation Network Newsletter - Chevron ETC, 1(4), 5-8, feature article.
Drits V.A., Ivanovskaya T.A., Sakharov B.A., Zvyagina B.B., Derkowski A., Gor'kova N.V., Pokrovskaya E.V., Savichev A.T., and Zaitseva T.S. (2010) Nature of the Structural and Crystal-Chemical Heterogeneity of the Mg-Rich Glauconite (Riphean, Anabar Uplift). Lithology and Mineral Resources, 45(6), 555-576.
Szczerba M.S., Środoń J., Skiba M., Derkowski A. (2010) One-dimensional structure of exfoliated polymer-layered silicate nanocomposites: A polyvinylpyrrolidone (PVP) case study.  Applied Clay Science, 47 (3‑4), 235-241.
Derkowski A., Środoń J., Franus W., Uhlik P., Banaś M., Zieliński G., Čaplovičová M., Franus M. (2009) Partial dissolution of glauconitic samples: implications for the methodology of K-Ar and Rb-Sr dating. Clays and Clay Minerals, 57, 531-554.
Bristow T.F., Kennedy M., Derkowski A., Droser M., Jiang G., Creaser R. (2009) Paleoenvironments of the earliest animal fossils. Proceedings of the National Academy of Sciences of the USA, 106(32):13190-5.
Środoń J., Zeelmaekers E., Derkowski A. (2009) The charge of component layers of illite-smectite in bentonites and the nature of end-member illite. Clays and Clay Minerals, 57, 650-672.
Derkowski A., Franus W., Waniak-Nowicka H., Czímerová A. (2007) Textural properties vs. CEC and EGME retention of Na-X zeolite prepared from fly ash at room temperature. Int. J. Mineral Processing, 82, 57-68.
Kacprzak A., Derkowski A. (2007) Cambisols developed from cover-beds in the Pieniny Mts. (southern Poland) and their mineral composition. Catena, 71, 292-297
Derkowski A., Michalik M. (2007) Statistical approach to the transformation of fly ash into zeolites. Mineralogia Polonica, 38(1), 47-69.
Derkowski A., Franus W., Beran E., Czímerová A. (2006) Properties and potential applications of zeolitic materials produced from fly ash using simple method of synthesis. Powder Technology, 166, 47-54.
Derkowski A. and Franus W. (2004) Properties of Na-X zeolite materials produced from coal fly ash by low temperature and hydrothermal methods of synthesis. Polish Journal of Environmental Studies, 13 (III), 28‑30.
Derkowski A. (2002) Experimental transformation of volcanic glass from Streda nad Bodrogom (SE Slovakia). Mineralia Slovaca, 35(1), 35-39.
Derkowski A. (2002) Microwave oven in synthesis of Na-zeolites from fly ash. Preliminary results. Mineralogia Polonica, 33(1), 81-94.
Industrial Applications - brief description

1.  Integrated mineralogical-geochemical tool calculating petrophysical properties for the Formation Evaluation analysis. 
The programs that use a non-linear optimization engine were designed to (A) optimize the bulk elemental composition of the sample with the quantitative phase analysis results to obtain individual mineral chemical composition (B) distribute minor and trace elements into minerals, and (C) calculate fundamental wireline log petrophysical parameters of individual minerals in an oil reservoir that can be used in wireline log mineral modeling program. When applied in Chevron ETC under the BestRockTM name, the program output produces the ComposerTM Excel Macro file that combines individual minerals into composite mineral end-points that can be chosen by the log analyst user based on weighted average concentrations of mineralogy, chemistry and associated petrophysical properties.

2.  Probabilistic models to improve the interpretation of the geochemical data (from geochemical wire-log probes, cuttings, core samples) and conventional log data as a tool in the Formation Evaluation. 
Currently available conversion models of the elemental analysis data into mineral composition (normative minerals) oversimplifies the mineral composition and may lead to false interpretations and models.  The probabilistic model  was constructed to transform various chemical and petrophysical data into mineral composition.  If the mineralogical analysis results from the core samples are available, the program uses them as the calibration reference. 

3.  MinStatTM system of statistical calculations and a computer program as a tool for the mineral modeling in the Formation Evaluation.
The set of programs provide constraints describing relationships between minerals in an oil reservoir.  The programs were designed for a manual or automatic calculation of mineral inequalities and for the multiple regression model for two or more (up to 10) mineral concentrations.

4.  Methodology for CEC and TSSA measurement.
The bulk rock cation exchange capacity (CEC) and total specific surface area (TSSA) are mineral properties important in oil exploration.  The current methods of their measurement were adjusted and limitations determined.  An effect of water and EGME adsorption, and Co-hexamine cation exchange was explained for samples rich in opals, kerogen, zeolites, gypsum, etc., and introduced as a routine approach in commercial applications. 

5. Water Immersion Porosity (WIP).
Development of a technique for total and effective porosity measurements in gas shale samples. WIP is a quick and simple method based on a complete water saturation combined with thermogravimetry and the mineral-chemical analysis (as above). When combined with gas adsorption techniques, the measurement reveals the wetability and pore size distribution in kerogen and mineral matrix. The WIP technique avoids problems identified in other porosity measurement techniques available for shale samples (GRI, MICP).

6. PetroLog - reporting and calculation software for mineralogical and chemical data, including CEC, water adsorption, rock petrophysical properties, and clay minerals speciation. The software is used for daily routine reporting at Chevron ETC laboratories.

Recent teaching activity
McCarty D.K. and Derkowski A. - "Mineralogy, Analysis, and Formation Evaluation" a 2-day course for Chevron Co., USA

© 2013 Instytut Nauk Geologicznych PAN