徐深气田汪深1区块火山岩储层特征研究及影响因素分析

Reservoir Characteristics and Its Controlling Factors of the Yingcheng Formation Reservoir in the Wangshen 1 Block in the Xushen Gas Field

徐深气田汪深1区块主要储层为营城组火山岩,火山岩岩性比气田内其它区块皆要复杂,南部几个区块只发育酸性岩,而区块酸性岩与中基性岩叠置发育。从酸性岩与中基性岩对比分析的角度,在岩性岩相特征、储集空间特征、储层特征和储层的控制因素等方面进行了对比分析,确定了本区块的储层发育特征。并分析了有利储层分布的影响因素。为气田的综合地质评价提供了重要依据,并对进一步指导气藏开发具有重要意义。

Volcanic rocks of Yingcheng formation is main reservoir in the Wangshen 1 block in the Xushen gas field. Volcanic lithology is complex. Formation are partially composed of acid volcanic rocks and intermediate-mafic volcanic rocks. By the comparative analysis of two types of lithology, it is obtained that a comprehensive evaluation of the reservoir characteristics and research of the main controlling factors on reservoir development. The main work includes several aspects as follows： lithofacies and lithologic features, the characteristics of preserving spaces, the reservoir productivity, and so on. the result provides an important evidence for geologic evaluation, and it＇s cant for the development of volcanic gas reservoirs. significant for the development of volcanic gas reservoirs.