地质通报2018，Vol.37Issue(1)：83-92,10.
新疆三塘湖盆地上石炭统近源凝灰岩致密油藏形成条件
The formation conditions of the Upper Carboniferous near-source tuff tight oil reservoir in Santanghu Basin,Xinjiang province
摘要
Abstract
The source rock of the Upper Carboniferous strata in Santanghu Basin was formed in the environment of volcanic erup-tion,which results in alternate occurrence of source rock and tuff with unequal thickness.The tuff tight reservoirs vary both in thick-ness and in physical property,and the contact relationship between tuff reservoir and source rock is complicated.Therefore,the for-mation of the near-source tuff tight oil reservoir requires special conditions. To investigate the accumulation conditions of the Up-per Carboniferous near-source tuff tight oil reservoir in Santanghu Basin, the authors analyzed M36 which serves as a typical tight oil reservoir. The evaluation standards of the Upper Carboniferous tuff tight reservoir and source rock in Santanghu Basin were es-tablished based on the analysis of core, slice, logging, as well as well geochemical testing, and the accumulation model of near-source tuff tight oil reservoir was also established. The results indicate that, where reservoir porosity is 5%~12% and permeability is 0.07~0.7×10-3μm2,the tuff reservoir can be called high-quality reservoir.The carbonaceous mudstone and dark mudstone whose or-ganic carbon content is higher than 2.0%,and Rois higher than 0.6% are effective hydrocarbon.Good reservoir,high quality source rock and interbedded source rock-reservoir collocation constitute the formation conditions of near-source tuff tight oil reservoir.关键词
马朗凹陷/上石炭统/凝灰岩/致密油藏/成藏条件Key words
Malang depression/Upper Carboniferous/tuff/tight oil reservoir/accumulation condition分类
天文与地球科学引用本文复制引用
陈常超,黄志龙,陈旋,安成龙,王昕,李新宁..新疆三塘湖盆地上石炭统近源凝灰岩致密油藏形成条件[J].地质通报,2018,37(1):83-92,10.基金项目
国家自然科学基金项目《含有机质沉凝灰岩有机质-玻璃质-微孔隙形成演化关系及致密油藏形成意义》(批准号:41472111) （批准号:41472111）
