METHOD FOR DEVELOPING NATURAL HYDROCARBON FIELDS IN FORMATIONS WITH LOW PERMEABILITY

摘要

The invention relates to the oil production industry. The aim of the proposed invention consists in increasing the effectiveness of the development of natural hydrocarbon fields with formations with low permeability. This result is achieved by drilling horizontal production wells and performing repeated hydraulic fracturing of the formation therein. Furthermore, a system of production wells is supplemented by a system of horizontal injection wells with repeated hydraulic fracturing of the formation therein; the formation pressure is maintained on the basis of pumping carbon dioxide into the formation, which makes it possible to maintain high current production rates of the wells in respect of oil, gas and condensate, and also to achieve high final values for the oil, gas and condensate output factors in oil, gas and gas condensate fields, which complements the possible effectiveness of such a development method on the basis of natural geosynthesis discovered in laboratory experiments which is characterized by the formation of hydrogen in formation conditions, as well as of gaseous and liquid hydrocarbons on reaction of carbon dioxide with residual water in the presence of natural catalysts, as a result of which the synergetic effect of an increase in the effectiveness of the development of oil, gas and gas condensate fields takes place both by virtue of maintenance of the formation pressure and by virtue of the additional associated extraction from formations with low permeability of the hydrogen, and the gaseous and liquid hydrocarbons which arise, which converts the proposed development method, on the one hand, into a universal method (which can be used for various types of fields), and on the other hand into a multifunctional development method (which makes it possible to extract not only hydrocarbons found in the formation but also hydrogen and gaseous and liquid hydrocarbons generated on pumping of CO2).