CAJ | 학술논문

为了改善稠油冷采开发效果，通过物理模拟实验和数值模拟方法研究了稠油溶解气驱渗流特征。首先测定了稠油和气体在不同压力下的界面张力，然后通过微观可视化实验和填砂管驱油实验研究了溶解气驱不同阶段渗流特征，最后对室内实验结果进行了数值模拟。研究结果表明：溶解气驱过程中气体逐渐由分散相聚并形成连续相；泡沫油会增大流体的弹性能量，有利于维持溶解气驱地层压力和增大生产压差，从而改善稠油溶解气驱开发效果。在室内实验的基础上，通过3种气体组分（溶解气、分散气和连续气）的转化来描述稠油溶解气驱渗流过程，数值模拟值和物理实验值拟合效果较好。
위료개선주유랭채개발효과，통과물리모의실험화수치모의방법연구료주유용해기구삼류특정。수선측정료주유화기체재불동압력하적계면장력，연후통과미관가시화실험화전사관구유실험연구료용해기구불동계단삼류특정，최후대실내실험결과진행료수치모의。연구결과표명：용해기구과정중기체축점유분산상취병형성련속상；포말유회증대류체적탄성능량，유리우유지용해기구지층압력화증대생산압차，종이개선주유용해기구개발효과。재실내실험적기출상，통과3충기체조분（용해기、분산기화련속기）적전화래묘술주유용해기구삼류과정，수치모의치화물리실험치의합효과교호。
To improve the performance of cold production in heavy oil,the flow characteristics of solution gas drive in heavy oil werestudied by means of physical experiments and numerical simulations.Firstly,the interfacial tensions between heavy oil and gas underdifferent pressures were measured,and then the flow characteristics of different stages in solution gas drive were appraised throughmicromodel test and sandpack flooding test.Finally,physical experiment results was numerically simulated and historically matched.The study results indicated that:gas was developed from the dispersed phase to the continuous phase gradually;foamy oil can in-crease the flow elastic energy,which can maintain the reservoir pressure,increase the production pressure drop and improve the per-formance of solution gas drive.Base on the physical experiments,three dynamical reaction equations describing the conversionprocess of different gas components were proposed to simulate the solution gas drive in heavy oil.A better agreement between thephysical measured and namerical simulated results could be obtained.