Distinguishing method for low-yield and low-efficiency well

• Main Authors: HUANG HAI, ZHOU CHAO, DONG FENGJUAN, REN DAZHONG, ZHOU JIAYI, CHEN YUE, QU LE, SUN ZEYONG, LU XUEFEI
• Format: Patent
• Language: Chinese; English
• Published: 11.03.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

A low-yield and low-efficiency well distinguishing method comprises the steps that according to the actual production characteristics of an oil/gas field, the single well cumulative yield contribution rate is calculated, and an oil/gas well yield cumulative contribution rate distribution curve is drawn; introducing slope change rates of any two continuous points of the oil/gas well yield accumulative contribution rate curve, determining class division points of the oil/gas well yield accumulative contribution rate curve, and performing oil/gas well dynamic classification; based on the oil/gas well dynamic classification result, in order to consider the interlayer interference condition in the oil/gas well mining process, in addition to selecting conventional static geological evaluation parameters, introducing the number of combined mining sand bodies in the longitudinal direction as an evaluation index, and carrying out oil/gas well static classification by adopting an entropy weight-ideal point method; base