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DOI: 10.5593/SGEM2015/B11/S1.038

MINERALOGICAL AND PETROGRAPHIC CHARACTERISTICS OF THE RESERVOIR ROCKS FROM INDEPENDENTA OIL FIELD (PREDOBROGEAN DEPRESSION, ROMANIA)

G.A. Branoiu
Tuesday 4 August 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-31-5 / ISSN 1314-2704, June 18-24, 2015, Book1 Vol. 1, 299-306 pp

ABSTRACT
In the paper were analyzed several cores from reservoir rocks from the Independenta oil field by optical microscopy (thin sections) and X-ray diffraction (powders method). The study of the thin sections revealed the presence of epiclastic detrital rocks represented by clayey sands, greywackes and mudrocks, composed of granoclasts, lithoclasts and bioclasts in a fine matrix of clay and carbonate minerals. The X-ray diffraction analysis shows the presence of tectosilicates, dioctahedral and trioctahedral phyllosilicates and carbonate minerals. As a novelty is noted the presence of the trioctahedral smectites (stevensite) revealed by X-ray diffraction analysis.
The paper brings new information on the Independenta oil field increasing degree of knowledge of the reservoir rocks. Establishing global mineralogical composition, the rock type and textural characters of samples analyzed of Pliocene age (reservoir rocks) that are fine sands and poorly consolidated sandstones have great importance for choosing an efficient method to controlling the sand movement into the well hole.

Keywords: mineralogical-petrographic observations, X-rays diffraction, North Dobrogea Promontory, Pliocene deposits, oil reservoirs

PAPER 10.5593/SGEM2015/B11/S1.038 : MINERALOGICAL AND PETROGRAPHIC CHARACTERISTICS OF THE RESERVOIR ROCKS FROM INDEPENDENTA OIL FIELD (PREDOBROGEAN DEPRESSION, ROMANIA)

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