Numerical simulation method for thermal recovery of oil reservoirs of multi-element thermal fluid

• Main Authors: Liu, Bo, Wang, Shuoliang, Ouyang, Shikun, Zhu, Yingjie, Liang, Baojin, Yu, Xinan, Kang, Ji, Ouyang, Mukun
• Format: Patent
• Language: English
• Published: 06.05.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TESTING

The present disclosure belongs to the technical field of thermal recovery of heavy oil reservoirs, and particularly discloses a numerical simulation method for thermal 5 recovery of oil reservoirs of multi-element thermal fluid, which comprises the steps of: step 1, performing PVT experiments, correcting the existing PR-EOS model by using the data obtained by testing, and solving a phase diagram of a multi-element thermal fluid-heavy oil system; step 2, performing reservoir damage evaluation experiments and establishing a mathematical model of multi-element thermal fluid reservoir 0 damage; step 3, establishing a numerical simulation theoretical equation for thermal recovery of multi-element thermal fluid, and solving the numerical simulation theoretical equation for thermal recovery of multi-element thermal fluid by using the equation and the phase diagram obtained in step 1 and step 2 to obtain a numerical simulator; obtaining a plurality of construction schemes of thermal recovery of 5 multi-element thermal fluid under different conditions through numerical simulation, and obtaining the optimal construction scheme of thermal recovery of multi-element thermal fluid by comparing different construction schemes. By using the technical scheme applied by the present disclosure, the problem of low accuracy of the existing numerical simulation method for thermal recovery of oil reservoirs of multi-element 0 thermal fluid can be effectively solved. Extra Syringe HeavyOil Pump Stirrerr Stmgeeratorto a niaor 0 0 PVT Cel V u Gasometer Flask i ea Syringe Pump Pump2 Oil ~Core holder U3 Oven Steam generator