OIL AND GAS PROGNOSIS OF THE OF MIDDLE- AND UPPER JURASSIC CARBONATE STRATA OF THE NORTH-WESTERN PART BLACK SEA AND ADJACENT AREA ACCORDING TO THE SEDIMENTARY-PALEOGEOMORPHOLOGICAL CRITERIA

Abstract

The studies carried out in the revealed the possibility of wide spread of various morphogenetic types of hydrocarbon traps associated with the carbonate rock bodies. Here, not only organogenic structures with different sizes, shapes and filter-volume parameters are expected, but also barrier reefs and carbonate ramparts, with which large zones and areas of oil and gas accumulation can be associated. The migration of hydrocarbons into the reservoirs of Middle and Upper Jurassic age could occur from the depths through the Lower Devonian stratigraphic level, the Upper Visevian and Lower Serpukhovian stages of Carboniferous deposits, as well as the Middle Jurassic deposits. This is confirmed by a composition of chloroform extract, as also by the data of texture-bituminological (macro- and microscopic) studies. Significant prospects of oil and gas bearing capacity are associated with the Jurassic reef-carbonate complexes within the Scythian Plate basement. An example of such a structure is the Amudarya oil and gas bearing basin.

Keywords

• north western part of the black sea
• scythian plate
• pre dobruja oil and gas bearing region
• middle and upper jurassic
• carbonate sediments
• reef facies
• reservoirs
• hydrocarbon migration
• oil and gas accumulation