Fracturing fluid permeating and sucking production increasing simulation method and device of double-hole and double-permeability medium reservoir

A fracturing fluid and dual medium technology, applied in earth-moving drilling, production fluids, wellbore/well components, etc., can solve the problems of imbibition intensity and sweeping area, large, rare, and lack of prominent understanding, etc. Achieve the effect of high recovery factor and enhanced recovery factor

Active Publication Date: 2019-10-08
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology

[0006] Research at home and abroad mainly focuses on the process of water flooding. The efficiency of water displacement oil is mostly experimental research. Due to the limitation of experimental design ideas, there is no outstanding understanding at present. The imbibition simulation model based on experimental results is not good enough. more common
Tight sandstone reservoirs have a strong imbibition effect. Duri

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  • Fracturing fluid permeating and sucking production increasing simulation method and device of double-hole and double-permeability medium reservoir
  • Fracturing fluid permeating and sucking production increasing simulation method and device of double-hole and double-permeability medium reservoir
  • Fracturing fluid permeating and sucking production increasing simulation method and device of double-hole and double-permeability medium reservoir

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[0049] The specific implementation manners of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementations described here are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0050] figure 1 It is a flow chart of a simulation method for fracturing fluid imbibition and production stimulation of a dual-porosity dual-permeability reservoir provided by an embodiment of the present invention, the method includes:

[0051] In step S101, the water saturation and water phase pressure of the fractures in the dual-porosity dual-permeability medium reservoir under different imbibition indexes are respectively calculated through the dual medium model.

[0052] The pore size of tight sandstone reservoir is micro-nano scale, and there is obvious imbibition. The simulation of tight sa...

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Abstract

The embodiment of the invention provides a fracturing fluid permeating and sucking production increasing simulation method and device of a double-hole and double-permeability medium reservoir and belongs to the technical field of oil and gas exploitation production increasing. According to the method and device, the water-containing saturation degrees and the water phase pressure of a crack in thereservoir under different permeating and sucking effect indexes are calculated through a double-medium model, and therefore an optimal permeating and sucking effect index is obtained; under the optimal permeating and sucking effect index, the pressure of the crack in the reservoir is optimal, and the recovery ratio is highest; and thus, the fracturing fluid permeating and sucking production increasing simulation method and device of the double-hole and double-permeability medium reservoir provides a reliable means for further research on increasing of the recovery ratio of a compact sandstonereservoir.

Description

technical field [0001] The invention relates to the technical field of oil and gas production stimulation, in particular to a fracturing fluid imbibition simulation method and device for dual-hole and double-permeability media. Background technique [0002] For reservoirs with moderate clay content, it is a hot topic to study imbibition to enhance oil recovery, especially for tight reservoirs, the pore throats are micro-nano scale, easy to form permeable areas, the capillary pressure is large, and the imbibition replaces oil and gas. The effect is better. [0003] Sandstone reservoirs with permeability less than 0.1 mD are usually defined as tight sandstone reservoirs, which are characterized by tight pores, low permeability, and low conventional recovery. Therefore, water flooding and other enhanced oil recovery operations are required to develop such reservoirs. [0004] Numerical simulation using a dual-porosity and dual-permeability media model is an important method f...

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Application Information

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IPC IPC(8): E21B43/26E21B49/00
CPCE21B43/26E21B49/00
Inventor 刘顺刘雄周舟
Owner XI'AN PETROLEUM UNIVERSITY
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