地质学报2012，Vol.86Issue(8)：1217-1226,10.
松辽盆地昌德地区营城组火成岩气藏储层特征及其控制因素
Characteristics and Controlling Factors of the Yingcheng Formation Volcanic Reservoir in the Changde Area, Songliao Basin
摘要
Abstract
The volcanic reservoir in the Changde area in Songliao Basin consist of ignimbrite and tuff, most of which belong to acidic volcanic rock, and is very different from other volcanic reservoirs of oil and gas basin in China. The rock is generally compact in structure and texture. Structure cracks and corrosion caves can be observed in drilling cores, with dissolved holes seen locally. Various types of reservoir space can be found under microscope, including intragranular dissolved pores, intra-crystal pores, structural micro-cracks, cracks and contraction joints and others. The volcanic rocks are generally thin, with about 75 m of the biggest thickness in the volcanic rock of Fangshen 9 well. In addition, the Fangshen 9 well shows an explosive facies, while other places show effusion facies. Volcanic rocks in the study area are low - porosity, low - permeability reservoir, and its lithology and lithofacies are closely related to physical properties and control the formation of the primary porosity. Late diagenetic reformation, including tectonic activities and dissolution determines the degree of development of secondary pores. Fractures produced by tectonic movement are the important factor to improve reservoir quality, while the late filling destroys the capability of reservoir and accumulation. The superimposing areas between eruption and effusion facies near volcanic crater are the favorable target for gas exploration.关键词
松辽盆地/昌德地区/营城组/火山岩储层/储集性Key words
Songliao Basin/ Changde area/ yingcheng formation/ volcanic reservoir引用本文复制引用
谢庆宾,高霞,夏秋君,舒萍,杨双玲,徐岩,李娜..松辽盆地昌德地区营城组火成岩气藏储层特征及其控制因素[J].地质学报,2012,86(8):1217-1226,10.基金项目
本文为国家重点基础研究发展计划(973计划)(编号:2009CB219307)火山岩油气藏的形成机制与分布规律项目资助的成果. （973计划）
