塔里木盆地塔中地区连续型碳酸盐岩油气藏地质特征及形成原因  

Geological characteristics and forming cause of the continuous carbonate reservoirs in Tazhong area,Tarim Basin

作　　者：常媛 贾鹏飞[1] CHANG Yuan;JIA Pengfei(Department of Geology,Northwest University,Xi'an 710069,China)

机构地区：[1]西北大学地质学系,陕西西安710069

出　　处：《大庆石油地质与开发》2022年第2期11-15,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项“全球油气资源评价与选区选带研究”(2016ZX05029)。

摘　　要：为了获得塔里木盆地的连续型碳酸盐岩内的大量油气资源,研究塔里木盆地连续型碳酸盐岩油气藏地质特征及形成原因,选取塔里木盆地塔中地区作为研究区域,通过勘探可知该地区连续型碳酸盐岩油气藏地质特征,即油气同时存在于构造高点与构造低点、高压与低压同时存在于含油气层、储层为局部高孔渗发育与普遍致密。分析其形成原因为:充足的油源供给以及良好的物质基础、油气运、聚格局由古斜坡、古隆起以及断裂系统控制、油气相态与分布由多期油气充注所形成。综合研究结果可知,塔里木盆地油气藏由多个烃源岩所提供,在长期低温环境下成藏。In order to obtain a large amount of oil and gas resources in the continuous carbonate rocks in Tarim Basin,the geological characteristics and forming cause of the continuous carbonate reservoirs are studied.The central area in Tarim Basin is selected as the study area.The exploration shows that the geological characteristics of continuous carbonate reservoirs in this area are that oil and gas exist simultaneously at the structural high points and structural low points,high pressure and low pressure co-exist in the oil/gas-bearing reservoir,and the reservoirs are developed with high porosity-permeability and generally tight lithology.The cause for the characteristic formation are analyzed as follows:sufficient oil source supply and good material foundation;oil and gas migration and accumulation patterns controlled by ancient slopes,ancient uplifts and fault systems;oil and gas phase state and distribution formed by multiple periods of oil and gas charging.The comprehensive research results show that the oil and gas reservoirs in Tarim Basin are provided by multiple hydrocarbon source rocks and accumulated under long-term low-temperature environment.

关 键 词：塔里木盆地 塔中地区 碳酸盐岩 油气藏地质 特征勘探 形成原因 

分 类 号：TE122[石油与天然气工程—油气勘探]