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MATHEMATICAL MODEL OF SUBSTANTIATION OF THE GEOLOGICAL AND COMMERCIAL STRUCTURE FOR CONDUCTING TRIAL OPERATION AT THE “ZHANATALAP” PRODUCTION FIELD

The relevance of the problem stated in the paper is conditioned by fact that in the last decade, scientific and technological progress in the sphere of petroleum field geology was closely related to the use of advanced science-intensive geoinformational technologies based on modern database management systems. In this regard, the paper considers the general principles of constructing systems for geological and commercial field analysis and oil fields development regulation. The main goal of trial operation is to obtain direct information about the production capabilities of project sites and their geological and geophysical characteristics, sufficient to justify the optimum quantity of recoverable oil reserves and ensure effective reservoir and production engineering, as well as substantiation of the reservoir regime, identification of production facilities and assessment of the prospects for the development of oil production at the field. The leading method of this issue is the substantiation of a geologic model, which allows us to consider this problem as a purposeful and organised modelling method to improve the conduct of trial operation in the Aptian and Middle Jurassic productive horizons. The results of pressure transient analysis were obtained. The terms of trial operation and the volumes of oil production, average daily withdrawals are substantiated, the issues of equipment and technology of oil production, drilling and well development are considered.