A new production gas well reservoir damage evaluation method

• Main Authors: ZHOU SHUJUAN, GUO HUI, WU JIANBIAO, SUN WEI, DING JINGCHEN, XUN XIAOQUAN, HAO TING, CAO TONGSHENG, ZHANG ZHANYANG, ZHAO SHIXU, ZHOU JIALIN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention relates to the field of oil-gas field development, in particular to a new production gas well reservoir damage evaluation method, which comprises the following steps: obtaining the original formation pressure of a gas well target reservoir and the well bottom static pressure after the gas well is completed, and obtaining the actual pressure loss value of the target reservoir by obtaining the difference between the well bottom static pressure and the original formation pressure; according to the starting pressure gradient of the target reservoir and the gas release radius of the gas well in the initial production stage, determining the theoretical pressure loss value of the target reservoir in the initial production stage; and obtaining the damage pressure loss of the target reservoir by subtracting the actual pressure loss value of the target reservoir from the theoretical pressure loss value. According to the invention, the damage pressure loss of the target reservoir can be obtained by utilizi