1 These powerpoint files were produced for the Earth History class at the Free University Berlin, Department of Geological Sciences The copyright for texts, graphical elements, and images lies with C. Heubeck, unless otherwise specified. Download, reproduction and redistribution of theses pages in any form is hereby permitted for private, personal, non-commercial, and class-related purposes use as long as the source is identified. Despite of my efforts, I cannot guarantee the completeness, correctness and actuality of the material. Prof. Christoph Heubeck Institut für Geologische Wissenschaften Freie Universität Berlin Malteserstr. 74-100 12249 Berlin GERMANY ph: ++49-(0)30-83870695 fax: ++49-(0)30-83870734 [email protected]http://userpage.fu-berlin.de/~cheubeck/ Reservoir Petrophysics Today’s Lecture Pressure Distribution in a Reservoir Buoyancy / Displacement Oil and water distribution in a reservoir Porosimetry Capillarity
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Reservoir Petrophysics - geo.fu-berlin.de€¦ · 4 Capillarity: Definition Capillarity ..... is the tendency of wetting liquids to ascend minute openings (< 0.5 mm diameter) through
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1
These powerpoint files were produced for the Earth History class at the Free University Berlin, Department of Geological Sciences
The copyright for texts, graphical elements, and images lies with C. Heubeck, unless otherwise specified.
Download, reproduction and redistribution of theses pages in any form is hereby permitted for private, personal, non-commercial, and class-related purposes use as long as the source is identified.
Despite of my efforts, I cannot guarantee the completeness, correctness and actuality of the material.
Prof. Christoph HeubeckInstitut für Geologische WissenschaftenFreie Universität BerlinMalteserstr. 74-10012249 BerlinGERMANY
... is the tendency of wettingliquids to ascend minute openings(< 0.5 mm diameter) through theagency of a molecular surfaceforce, and (possibly) actingagainst the force of gravity.
Observations
• sponge sucking up liquid• sponge on kitchen counter staying wet• water rising through plants
The Concept of Capillary Pressure
Hydrocarbon
The capillary pressure of a rock is a function of 3 variables :
water
rock rock
• hydrocarbon-water interfacial
tension γ, • wettability (expressed as the
contact angle θ), and • radius of of the pore throat r
The Concept of Capillary Pressure
Hydrocarbon
The capillary pressure of a rock is a function of 3 variables :
water
rock rock
r
θ
• hydrocarbon-water interfacial
tension γ, • wettability (expressed as the
contact angle θ), and • radius of of the pore throat r
γ
The Concept of Capillary Pressure
Hydrocarbon
The capillary pressure of a rock is a function of 3 variables :
water
rock rock
r
θ
• hydrocarbon-water interfacial
tension γ, • wettability (expressed as the
contact angle θ), and • radius of of the pore throat
• Tiab, D., and C. Donaldson, 1996, Petrophysics – Theory and Practice of Measuring Reservoir Rock and Fluid Transport Properties: Gulf Publishing Co., 706 p.
• Various skripts, available as downloadable pdfs from the internet and compiled in the class archive
In what types of large-scale geometric bodies do these conditions exist in the
subsurface ?
Next Lecture
Reservoirs
Petrophysics Links
• http://www.micromeritics.de/ and http://www.micromeritics.com/: Homepages of the leading producer of pore-analytical hardware; gooddownloadable pdf script; link to a visualisation-software company www.pore-cor.com.
• http://www.petrophysics.net/index.htm: “The Petrophysics Portal: The science of measuring rock properties and the realtionship between those. Maintained by Mark Deakin, a consultant. Many links to organizations, companies etc.
• http://www.hendersonpetrophysics.com/ Similar but not as good.
• http://www.mines.edu/~golhoeft/research/petro.html : An article describing the essence of Petrophysics; by Gary R. Olhoeft, Prof. at Colorado School of Mines.