PETROPHYSICAL CHARACTERISTICS OF SOURCE AND RESERVOIR ROCKS
C. Cranganu1*, M. A. Villa1,2, M.
1 Brooklyn College of the City University of New York, Dept. of Geology, 2900 Bedford Avenue, Brooklyn, NY 11210, USA.
2 Now at Occidental
de Colombia, Inc. (OXY),
3“Al. I. Cuza” University,
Faculty of Geography and Geology,
4 present address:
* corresponding author: Cranganu@brooklyn.cuny.edu
The petroleum system in the
The Oligocene samples showed little petrophysical variation. Samples were relatively homogenous and had the same pore-throat type (nano), were well sorted, had unimodal pore-throat distribution (suggesting the existence of a single fluid phase), had similar values for median and average pore-throat radius, and similar values for R35 and maximum threshold entry radius. Upper Cretaceous - Eocene samples were more heterogeneous in terms of petrophysical properties, and reservoir quality was in general higher than in the Oligocene interval. Average porosity and calculated air-permeability values were 18.4% and 0.37 mD, respectively for Upper Cretaceous samples; and 11.8% and 27.11 mD, respectively for Eocene samples. A case study of Oligocene and Cretaceous - Eocene samples from well West Lebada 817 is presented.
This paper represents the first petrophysical study of source
and reservoir rocks in the
Key words: Black Sea,
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