地质学报2012，Vol.86Issue(8)：1198-1209,12.
中国古亚洲域沉积盆地火山岩油气藏储层特征比较及其差异分析
Reservoir Characteristic Comparison and Difference Analysis of Volcanic Reservoirs in the Paleo-Asian Domain's Basin, China
摘要
Abstract
According to analysis of the ages and lithology of parent rocks in volcanic reservoirs, the types of reservoir space and lithofacies of volcanic rocks, which distribute in the basins all around the paleo-Asian tectonic domain of China, the article discusses the reservoir characteristics and difference of volcanic oil and gas pool. In the paleo-Asian tectonic domain of China, the research indicates that the parent rocks in volcanic reservoir develop in a regular pattern: western parent rocks age is older than eastern. The Junggar basin, Santanghu basin and Tuha basin which located in the west develop marine and marine-terrigenous medium-basic andesite, basalt and pyroclastic rocks of the late Palaeozoic; and the Songliao basin, Erlian basin and Hailaer basin located in the east develop continental intermediate-acid rhyolite and andesite of the Mesozoic. The primary reservoir space of volcanic rock includes pores, cavity and solidification contraction fractures; the secondary reservoir space includes various of dissolved pores, structural fractures and weathered fractures. The volcanic lithofacies can be divided into extrusive fades, conduit facies, subvolcanic facies and volcanic sedimentary facies. Most of intermediate-basic rocks begin with effusive facies, and the type of phase sequence is effusive facies, explosive facies/volcanic sedimentary facies; Most of the intermediate-acid rocks begin with explosive facies or conduit facies, the main phase sequence is explosive facies, effusive facies/ extrusive facies. The effusive facies develop primary pores and structural fracture; Explosive facies develop intergranular pore; Inter-breccia pore and primary fracture are dominant in the extrusive facies. Several factors affect the difference of volcanic reservoir, such as lithology and lithofacies, eruption environment, late reformation and diagenesis. The first two factors control the formation and distribution of volcanic reservoir and development of reservoir space; the rest reform storage property and permeability of the reservoir.关键词
火山岩/储层/油气藏/古亚洲域/沉积盆地Key words
volcanic rocks/ reservoir/ oil and gas pool/ paleo-Asian tectonic domain/ sedimentary basins引用本文复制引用
杨明慧,兰朝利..中国古亚洲域沉积盆地火山岩油气藏储层特征比较及其差异分析[J].地质学报,2012,86(8):1198-1209,12.基金项目
本文为国家自然科学基金重点项目(编号90814005)和油气资源与探测国家重点实验室开放课题(2008002)共同资助的成果. （编号90814005）
