Research on Well Testing Interpretation of Low Permeability Deformed Dual Medium Reservoir
Research on Well Testing Interpretation of Low Permeability Deformed Dual Medium Reservoir作者机构：Bohai Oilfield Research Institute of CNOOC Ltd.-Tianjin Branch Tianjin China
出 版 物：《Open Journal of Applied Sciences》 (应用科学（英文）)
年 卷 期：2023年第13卷第11期
页 面：2141-2148页
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
主 题：Low Permeability Oil Reservoirs Deformation Medium Dual Media Cross Flow Coefficient Well Testing Interpretation Model
摘 要：Considering the influence of quadratic gradient term and medium deformation on the seepage equation, a well testing interpretation model for low permeability and deformation dual medium reservoirs was derived and established. The difference method was used to solve the problem, and pressure and pressure derivative double logarithmic curves were drawn to analyze the seepage law. The research results indicate that the influence of starting pressure gradient and medium deformation on the pressure characteristic curve is mainly manifested in the middle and late stages. The larger the value, the more obvious the upward warping of the pressure and pressure derivative curve;the parameter characterizing the dual medium is the crossflow coefficient. The channeling coefficient determines the time and location of the appearance of the “concave. The smaller the value, the later the appearance of the “concave, and the more to the right of the “concave.
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