深层稠油油藏注天然气吞吐泡沫油流特征数值模拟研究  

The Numerical Simulation Study of Foamy Oil Flow Characteristics by Natural Gas Huff and Puff for Deep Heavy Oil Reservoirs

作　　者：李菊花[1] 吴波[1] 徐君[2] 

机构地区：[1]长江大学石油工程学院,武汉430100 [2]吐哈油田分公司开发部,哈密839009

出　　处：《科学技术与工程》2013年第28期8263-8267,共5页Science Technology and Engineering

基　　金：中国石油科技创新基金项目(2010D-5006-0202)资助

摘　　要：深层稠油油藏的有效开采是世界性的难题,天然气吞吐开采是有效的方法之一;其中天然气吞吐回采阶段泡沫油流的驱油特征研究尚不深入。采用考虑泡沫油的数值模拟方法,以吐哈鲁克沁油田深层稠油油藏天然气吞吐为实例,从模拟网格尺寸、油藏非均质程度、注入气溶解速度等角度,对吞吐回采阶段的"泡沫油流"的渗流特征展开描述。研究结果表明,数值模拟研究要建立适宜的网格模型才能反映真实的泡沫油流动态;注气气体扩散水平较高时,非均质的影响效果显现,气体优先从储层突破影响原油的生产;当注入气体溶解速率低时,微气泡少,影响稠油的流动性,累积采油量减少。It is a world problem of effective producing for deep heavy oil reservoirs. The process of natural gas huff and puff is one of the effective methods. However the foamy displacement characteristics study is not ad- vanced. The foamy oil numerical simulation study based on the example of natural gas huff and puff in Tuha L＇uke- qin deep heavy oilfield is presented. The characteristics is illustrated from the factors of simulation grid size, reser- voir heterogeneity degree, injected gas dissolution rate. The results show that while the real foamy flow feature the higher injection gas diffusion level and the higher heterogeneous, the greater the influence on yields are simulated by the appropriate grid model. When the lower injected gas dissolution rate, the less small bubble are to have effect on the oil mobility, the cumulative oil production reduces.

关 键 词：深层稠油 天然气吞吐 数值模拟 泡沫油 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]