Draw a comparison between volcanic reservoir and Clastic or carbonate rocks reservoirs, it is uncertainty for volcanic reservoir that the stronger heterogeneity, complicated flow mechanism, gas well productivity' s many differences and unbalanced distribution. According to the characteristics of gas field, it is optimized that gas reservoir engineering analysis method fitting to volcanic productivity by gas testing, production test, analysis of the data of steady state well testing and combining geology cognition. The study reveals reservoir characteristics of volcanic rocks and flow mechanism. Draw a conclusion that low permeability of volcanic gas reservoir is clear, gas well productivity and the well control dynamic reserves of gas reservoir are different. Reservoir' s flowing regional can he divided into continuous-type, strip-wpe, closed-type and semi-closed type. Influencing factors of gas well productivity are the structure of gas field, lithologic and lithofacies of reservoirs, reservoir physical property, flowing regional morphology, the scale of connected high permeability reservoir and micro-seepagecharacteristics of reservoir.%火山岩气藏与碎屑岩和碳酸盐岩储层气藏相比,储层非均质性强、渗流机理复杂,气井间产能差异大、分布不均衡.本文针对研究区块特点,通过对试气、试采及稳定试井资料分析,结合地质认识,评价气井的产能特征与控制因素,优选到了适合火山岩产能特征的气藏工程分析方法,从动态揭示了火山岩储层储集空间特征与渗流杌理,得出火山岩气藏低渗特征明显,气井产能和井控动态储量差异大,储层可流动区域分为连续型、条带型、封闭型、半封闭型四种类型.气井产能影响因素:气田构造、储层岩性岩相、储层的物性、流动区域形态、连通的高渗带(体)的规模、储层微观渗流特性.
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