← Intelligent Geophysical Exploration Division

Well Logging & Petrophysics Center

Analyzes well log data and rock physics relationships to characterize reservoir properties and fluid saturation, integrating wireline and LWD logs with core data to derive porosity, permeability, lithology, and hydrocarbon saturation for reservoir models.

⚙️ GeoVerse System Administration Division 🖥️ AI & Computing Sciences Division 🔬 Basic Sciences Division ⚡ Intelligent Geophysical Exploration Division 🛢️ Resource & Energy Engineering Division 🌍 Applied Geoscience Solutions Division 💼 Economics, Policy & Strategy Division 🎓 Education & Training Development Division 🚀 Innovation & International Collaboration Division

Seismic Exploration & Imaging Center Gravity & Magnetic Methods Center Electromagnetic Methods Center Earthquake Seismology Center Integrated Geophysics & Interpretation Center Inversion & Modeling Center Well Logging & Petrophysics Center

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⭐ Center Chief

Gus Archie

Center Head

💡 Archie's law for formation resistivity

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1943–2008

Michael Schoenberg

Researcher

💡 Introduced the linear-slip theory (1980, 1983) characterizing elastic wave behavior across fractured interfaces, foundational to seismic and acoustic-log anisotropy analysis for fractured reservoirs

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1920–1996

Irving Fatt

Researcher

💡 Applied physics of fluid flow through small pores to petroleum reservoir rock, advancing core-analysis methodology for relative permeability and capillary behavior

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1892–1962

Arthur Compton

Researcher

💡 Discovered the Compton effect (1923), the gamma-ray scattering physics that is the direct physical basis of gamma-gamma formation density logging

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1931–2023

Alexander A. Kaufman

Researcher

💡 Made foundational contributions to inductive electromagnetic well logging theory, including resolving power, vertical resolution, anisotropy effects, and transient EM logging techniques

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1941–2011

Robert C. Earlougher

Researcher

💡 Authored the influential 1977 SPE monograph 'Advances in Well Test Analysis', the standard reference for pressure transient analysis and formation testing

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1899–1990

Fritz Gassmann

Researcher

💡 Derived Gassmann's equation (1951), relating a porous rock's elastic moduli to the properties of its pore fluid, the standard tool for fluid substitution in well-log and seismic rock physics

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1891–1974

James Chadwick

Researcher

💡 Discovered the neutron (1932), earning the 1935 Nobel Prize in Physics; neutron physics is the direct foundation of neutron porosity well logging

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1912–1997

Edward Mills Purcell

Researcher

💡 Independently discovered nuclear magnetic resonance (NMR) in condensed matter (1946), sharing the 1952 Nobel Prize in Physics; NMR physics underlies modern NMR well logging tools

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1845–1923

Wilhelm Röntgen

Researcher

💡 Discovered X-rays (1895), earning the first Nobel Prize in Physics (1901); the underlying photoelectric absorption physics is engineered into the photoelectric factor (PeF) log and X-ray fluorescence core/cuttings analysis

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1925–2014

Adrian E. Scheidegger

Researcher

💡 Authored 'The Physics of Flow Through Porous Media', the standard reference textbook establishing the physical theory of permeability and multiphase flow in reservoir rock

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1908–2002

Serge A. Scherbatskoy

Researcher

💡 Held over 200 patents in radioactivity well logging instrumentation, foundational to gamma-ray, neutron, and density logging tool design

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1884–1953

Marcel Schlumberger

Researcher

💡 Co-invented (with brother Conrad) continuous electrical well logging (1927) and co-founded Schlumberger Ltd, the origin of modern wireline formation evaluation

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center

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1840–1910

Friedrich Kohlrausch

Researcher

💡 Kohlrausch's law of independent ion migration; precision measurement of electrolyte conductivity

⚡ Intelligent Geophysical Exploration DivisionWell Logging & Petrophysics Center