深层火山岩油气藏滑脱效应及启动压力梯度研究  

Slippage effect and threshold pressure gradient of deep volcanic reservoir

作　　者：何学文[1] 杨胜来[1] 唐嘉[2] 

机构地区：[1]石油工程教育部重点实验室中国石油大学,北京102249 [2]中油新疆油田分公司,新疆克拉玛依834000

出　　处：《特种油气藏》2010年第5期100-102,共3页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"超深层油气藏岩石物性垂向分布规律及渗流特征研究"(50874114)

摘　　要：以不同深层火山岩气藏岩心渗流特征实验为基础,在不同温度、不同气体的情况下,测定压力平方差与流量的关系。实验表明,深层火山岩气藏气体渗流存在滑脱效应和启动压力梯度现象;气体的滑脱效应与气体的性质有关,气体的分子质量越小,滑脱效应越严重;测定了不同岩心类型的气体启动压力梯度值,认为岩心的渗透率大小、温度以及气体的性质是影响气体启动压力梯度值的主要因素。The relationship between the quadratic difference of pressures and flow rate is measured at different temperatures with different gases based on experiments of percolation characteristics of cores from different deep volcanic gas reservoirs. The result of the experiments shows that gas percolation in deep volcanic reservoir has slippage effect and threshold pressure gradient; gas slippage effect is related to the nature of the gas,the smaller the molecular weight of gas,the more severer the slippage effect. Gas threshold pressure gradient is measured for different types of cores. It is considered that core permeability and temperature and gas property are the major factors affecting gas threshold pressure gradient.

关 键 词：深层火山岩 滑脱效应 启动压力梯度 气体性质 

分 类 号：TE122.2[石油与天然气工程—油气勘探]