Method, device and equipment for acquiring reserve volume of carbonate rock fracture-cavity unit with closed water body

Abstract

The embodiment of the invention provides a method, device and equipment for acquiring reserve volume of a carbonate rock fracture-cavity unit with a closed water body. The reserve volume of a reservoir body fracture-cavity unit with the closed water body can be acquired rapidly by acquiring crude oil accumulative output quantity Np, formation water accumulative output quantity Wp, output formationcrude oil volume coefficient Bo, output formation water volume coefficient Bw, crude oil compression coefficient Co, water compression coefficient Cw, oil well production pressure difference delta Pand original oil volume coefficient Boi and acquiring parameters of the fracture-cavity unit according to the volume percentage A of the closed water body of the fracture-cavity unit on the fracture-cavity, and the dynamic reserve volume is pushed finally, so that the problems that the reserve volume of the carbonate rock fracture-cavity unit with the closed water body is difficult to acquire andthe accuracy is low are effectively solved, good on-site application effect is achieved, basis is provided for carbonate rock oil well management and convenience and economic property are achieved.

Description

technical field [0001] The embodiments of the present invention relate to the field of oil production engineering, and in particular to a method, device and equipment for obtaining reserves of fracture-cave units in carbonate rocks with closed water bodies. Background technique [0002] With the rapid development of the petroleum industry, the field of petroleum exploration continues to expand, and a large number of carbonate reservoirs have been discovered. The description of salt rock reservoirs is extremely difficult, and there is no good method for calculating the reserves of fracture-vuggy units with closed water bodies. [0003] The existing technology is to use the research method of system hierarchy to decompose complex reservoirs with various fracture-cavity combinations, various oil-water relationships, and multiple sets of pressure systems into several fracture-cavity units with similar fracture-cavity causes and the same pressure system to form The comprehensive...

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Problems solved by technology

[0004]However, the oil-water contact can be confirmed in sandstone reservoirs, and oil reserves can be calculated separately, while the oil-water contact in carbonate rocks cannot be determined, and sandstone reservoirs cannot be used Reservoir Methods for Obtaining Accurate Oil Reserves

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