Taking the Lower Permian volcanic rocks of Ke-Xia area in Junggar Basin as an example, this paper discussed the problems of volcanic reservoir research. As there is still no commonly accepted classification scheme of volcanic rocks,different classification criteria were adopted in exploration and development of volcanic reservoirs. Thus it is urgent to find a suitable classification scheme of volcanics for exploration and development of volcanic reservoirs in China. There are many big challenges in the study on the volcanic eruption patterns and facies distribution due to strong volcanic facies heterogeneity, variable eruption types, complex volcanic facies and facies sequence,common overlapping of volcanic rocks of different origins,as well as limited drilling data of volcanic reservoirs. The characteristics and genesis of fractures especially micro-fractures in volcanic reservoirs are still poorly understood. To solve these problems, more attentions should be paid to surface diagenesis of volc-niac rocks and advanced logging techniques should be applied to research on volcanic reservoirs.%针对目前火山岩储层研究中存在的热点问题,以准噶尔盆地克-夏地区下二叠统火山岩为例进行了探讨.研究认为,火山岩分类方案混乱,不同学者在勘探和开发中采用不同的划分依据,亟需统一认识,找到一种适合中国火山岩油气勘探开发的火山岩分类方案.火山岩相方面,火山岩相非均质性强,火山爆发类型多,火山岩相及相序复杂,非同源火山岩叠置现象普遍,但火山岩探井资料有限,这给目前的火山喷发模式及火山岩相展布规律研究带来了极大的挑战；火山岩储层方面,裂缝尤其是微裂缝的发育特征及成因等研究有待加强；火山岩成岩研究更应注重地表成岩作用；火山岩储层测井解释评价方面,目前的常规测井评价技术已远不能满足火山岩储层研究,需要广泛应用先进的测井新技术来研究火山岩储层特征.
展开▼
