Water flooded layer interpretation method for reservoir classification evaluation

• Main Authors: PENG ZUOLEI, LIU QING, DAI QIWEN, ZHANG GUANGWEI, JIANG FUCONG, LIU HONGTAO, JIN HUI, CAO RONGLIANG, LI MINGYAN, WANG ZHIHUI, SHI PEI, YU HONGCHENG, QIN WEN, LIU CHENFAN
• Format: Patent
• Language: Chinese; English
• Published: 02.01.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention relates to the technical field of petroleum geology development logging, in particular to a water flooded layer interpretation method for reservoir classification evaluation, which comprises the following steps of: S1, classifying reservoirs according to the characteristics of a logging curve for sedimentary microfacies identification; s2, calculating the shale content under each reservoir type in a classified manner; s3, calculating effective porosity and permeability under each reservoir type in a classified manner; s4, respectively establishing irreducible water saturation calculation formulas according to the types of the reservoirs; s5, establishing a water saturation calculation formula; s6, carrying out shale correction on the resistivity of the first type of reservoir, and carrying out surrounding rock stratum thickness correction and shale correction on the resistivity of the second type of reservoir; step S7, establishing reservoir flooding level identification charts in a classified m