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ACCESSORY MINERALIZATION OF DOLOMITE RESERVOIRS AS THE FACTOR OF FLUIDS VARIABILITY COMPOSITION

Aleksey Eskin

First published: 2017-06-20https://doi.org/10.5593/sgem2017/11/s01.002View metrics

Abstract

Oil-saturated Visean dolomite reservoirs were studied from the Tatarstan Republic, east of Russian platform. The main methods of study were X-ray and SEM analysis. Dolomite forms interstratified dense and porous layers with thickness of 0.5-4.0 m in oil-saturated parts of reservoirs. The dolomites are characterized by rhombic form of crystals. Many of them have crystal growth zones as alternate micro-layers with different iron content. In the pore space of dense dolomites find some iron accessory minerals such as siderite and pyrite. There are accessory crystals of quartz and aggregates of microcline in cavernous of porosity dolomites. Based on the heterogeneous composition of dolomites and their accessory minerals associations were modeled stages and hydrochemical parameters variation of fluids before oil charge.

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Publication details

Title
ACCESSORY MINERALIZATION OF DOLOMITE RESERVOIRS AS THE FACTOR OF FLUIDS VARIABILITY COMPOSITION
Authors
Aleksey Eskin
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
11-18
SWS Citekey
Eskin201711118
ISSN
1314-2704
ISBN
978-619-7105-98-8
Language
en
Publication type
Conference Paper
Keywords
dolomitesaccessory mineralsquartzmicroclinesideritepyrite
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