灯影组气藏不同尺度储集空间定量相渗及水驱特征研究  

Quantitative Phase Infiltration and Water Drive Characteristics of Different Scale Reservoir Space in Dengying Formation Gas Reservoir

作　　者：熊钰 雷婷婷 孙泽威 江俊 傅希桐 冯棚鑫 张春 王羚鸿 赵梓涵 熊锋 Xiong Yu;Lei Tingting;Sun Zewei;Jiang Jun;Fu Xitong;Feng Pengxin;Zhang Chun;Wang Linghong;Zhao Zihan;Xiong Feng(School of Petroleum and Gas Engineering,Southwest Petroleum University,Chengdu 610500,China;Exploration and Development Research Institute,Petrochina Southwest Oil and Gas Field Company,Chengdu 610041,China)

机构地区：[1]西南石油大学石油与天然气工程学院,成都610500 [2]中国石油西南油气田公司勘探开发研究院,成都610041

出　　处：《水动力学研究与进展（A辑）》2024年第4期626-637,共12页Chinese Journal of Hydrodynamics

基　　金：中石油-西南石油大学创新联合体基金。

摘　　要：该文获取四川盆地震旦系灯影组二段气藏岩心,运用CT扫描、NMR及压汞法对不同尺度岩心孔隙结构进行深入研究,开展了高温高压条件下,不同孔/缝/洞搭配岩心的定量相渗研究工作,分析了气井产水规律及采收率。研究结果表明:柱塞样到全直径样的相渗特征具尺度效应,且分形维数增加,从柱塞样到全直径样的相渗曲线偏右;分形维数越大,气相的相对渗透率会有一定程度的增大,而水相的相对渗透率逐渐减小;建立的新相渗关联式可靠,计算值与实验值相关性强,若改变方程形式还可推广到具有一定大孔隙的砂岩气藏中使用。因此,该文相渗关联式具有普遍意义,能够广泛应用到其他气藏。The core of the second member of the Sinian Dengying Formation gas reservoir in Sichuan Basin is obtained in this paper.The pore structure of the core is studied by CT scanning,NMR and mercury injection,and the quantitative phase infiltration of the core with different holes/fractures/holes under high temperature and high pressure is carried out.Finally,the water production rule and recovery efficiency of the gas well are analyzed.The results show that the phase permeability from the plunger to the full diameter sample has a scale effect,and the fractal dimension increases.The phase permeability curve from the plunger to the full diameter sample is skewed to the right.When the fractal dimension increases,the relative permeability of gas phase increases to a certain extent,while the relative permeability of water phase decreases gradually.The new correlation formula is reliable,and the calculated values have a strong correlation with the experimental values.If the equation form is changed,it can also be applied to sandstone gas reservoirs with certain large pores.Therefore,the correlation formula is of universal significance and can be widely applied to other gas reservoirs.

关 键 词：碳酸盐岩 数字岩心 分形维数 常温常压气水相渗 水驱特征 

分 类 号：TU476[建筑科学—结构工程]