Abstract
Pashshorskoe oil field located in the southern part of Shapkina-Yuryakhinskoye petroleum district (LHR) Pechora-Kolvinsky oil and gas field (NGOs). In the Upper complex (Domanik-Famennian deposits) identified two oil deposits associated with carbonate arrays. In the Upper complex Timan-Pechora province (TPNGP) to carbonate facies arrays assigned secondary and detrital dolomite, organogenic-clastic, sferovo-sgustkovye, sgustkovo lumpy, stromatolithic and clastic limestone. With carbonate structures of different genesis is related to many minerals. Naturally, it is of great interest to these kinds of facilities. In the last 40 years studying the carbonate massifs strenuously engaged in petroleum geologists, the world production of oil and gas from these buildings is constantly increasing. The most thoroughly studied reef tracts, practical importance which both oil and gas reservoirs acknowledged. Poorly studied carbonate massifs of other genesis. Meanwhile, they can be a repository of hydrocarbons and have at least high reservoir properties than reefs. Carbonate arrays of different origins differ from each other in lithology, and, consequently, by the nature of their placement in the reservoir zones with different reservoir properties. Deciphering the genesis and structure identification of a studied array allows you to choose the most efficient method of geological work in each case already exploration stage and is the basis of the prediction of their oil and gas potential, possible type of deposits and the value of probable reserves. In the process of studying Upper Devonian complex of Pashshorsky deposits three types of carbonate massifs were established: carbonate bank reef array and agglyutigerm. Given their lithology, facies and stratigraphic characteristics. The study Upper Devonian complex of Pashshorsky oilfield showed that of the collector thickness of massive natural reservoir Frasnian carbonate includes arrays of different origins and different ages (Domanik Livenskoy). Reservoir thickness is characterized by heterogeneity of reservoir properties by area and the section that is controlled by lithofacies postsedimentary conditions and processes.
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