Cyclic stimulation of producing well drainage area is enhanced oil recovery method. Its effectiveness is achieved by activating the elastic forces of the reservoir and increasing extraction from dead-end zones. The difference from cyclic waterflooding is the increase in oil recovery directly in the vicinity of production wells. The solution to the problem of continuing Vietsovpetro JV oil production levels should be associated not only with intensification and increase of geological reserves through exploration, but also through large-scale application of effective technologies for enhanced oil recovery. The most promising object for application of enhanced oil recovery methods is the Basement production target: oil production from the object is 49% of total production, while the active well fund accounts for 29% of the total active well fund. The Basement production target is an oil reservoir in granitoid fractured rock of the basement. It was discovered in 1988 in the White Tiger field of the South Vietnamese shelf. According to core laboratory studies, oil from macrocracks, which account for only 25% of the total pore volume, is actively producing at the Basement production target. Microcracks and caverns, which account for 75% of the total pore volume, are poorly connected and have low development involvement. The efficiency of the cyclic stimulation of producing well drainage area at the Basement target is due to the involvement in the active development of oil reserves from microcracks and caverns. The article provides theoretical principles, analytical and hydrodynamic calculations of the effectiveness of the method of cyclic impact on production wells drainage area of the Basement production target.
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