Lithologic-petrographic characteristics and petrophysical properties of reservoir rocks of Maikop sediments in Lenkeran oil-gas bearing region

Abstract

The lithologic-petrographic and reservoir characteristics of Maikop sediments are studied in detail. Maikop sediments in this region are characterized with tufogenic-sedimentary complex of large thickness, layered clay slates, clays, aleurites, sandstones and conglomerates; clay rocks are dominant. Maikop sediments underwent facies changes in vertical and horizontal directions: the lower part of Maikop suite is characterized with clay, and the upper one – with sand and tufogenic facies. The sandstones of Upper Maikop sediments are defined with better filtration- capacity properties than those of Lower Maikop. The research of these rocks has a special significance for the specification of direction of the exploration surveys.