新疆塔里木盆地塔河油田南部中奥陶统一间房组丘（礁）滩相储层研究

【作者】 邓小江；

【导师】 李国蓉；

【作者基本信息】 成都理工大学 ， 矿产普查与勘探， 2005， 硕士

【摘要】 塔河油田南部继沙76井于中奥陶统一间房组滩相颗粒灰岩地层中喷出高产工业油气流,发现这一新的油气储层类型后,又有一大批钻井在一间房组礁滩相碳酸盐岩层段发现良好油气显示和高产工业性油气流,深入研究认识该套碳酸盐岩储层,对于塔河油田的进一步勘探和开发具有重要意义。 但是目前对储层的成因机制认识尚存在分歧,对此套储层发育展布规律的探索尚显粗浅,依据尚不充分。 针对上述问题,本文利用层序地层学原理,通过露头剖面、岩心、测井资料的综合,进行了单井剖面层序的划分,进而建立起塔河油田南部中奥陶统一间房组礁滩相碳酸盐岩高水位体系域的高分辨(高频)层序地层格架。以高频层序地层格架的建立为基础,通过成岩作用序列的建立以及地球化学手段(主要是通过荧光分析)相结合,探索了礁滩相储层的形成机制;进而,通过物性变化特征与储层控制因素研究,并结合四川盆地三叠系嘉陵江组孔隙型碳酸盐岩储层进行对比分析,进行储层质量预测评价。得到了如下几点认识: 1.一间房组被划分为一个三级层序,一间房组高水位体系域被划分为五个高频层序。 2.一间房组礁滩相储层成因机制为碳酸盐岩沉积期遭受大气水溶蚀改造,储层受高水位体系域四级海平面下降时形成的准层序不整合界面控制,因此储层往往发育于高频层序的顶部或中上部。 4.一间房组储层具有良好的油气勘探前景。更多还原

【Abstract】 After finding high industrial oil in yijianfang of Middle Ordovician in S76 in the south of tahe oilfield, the type of beach grain limestone reservoir began to be exploited. Since then a lot of wells has found high industrial oil in the same type of reservoir of yijianfang. This carbonate reservoir is very important to further exploration and exploitation in tahe oilfield.At the present time, there are different opinions about the cause of formation of this reservoir. There are many doubts and no enough evidence about the development of reservoir.In allusion to these problems, we use the views of sequence stratigraphy, the data of outcrop section, drill core and logging, to plot out sequence of single well section. Furthermore we can set up the sequence of strata of yijianfang. Then use diagenies sequences and fluorescence analysis to seek after the mechanism of formation. At last, By researching controlled factors of reservoir and contrasting with pore-reservoir jialingjiang group Triassic System in Sichuan basin, we make evaluation to quality of reservoir. The followings are several points:1. Yijianfang group is devided into one sequence, its high system tracts is devided five parasequence.2. Mechanism of reef and beach facies reservoir in Yijianfang group is that carbonate is soluted when it is deposited. Reservoir is controlled by unconformity that four grade offing drop forms. This is a cause that reservoir is appeared the top or middle of parasequence.3. Yijianfang group has a well foreground of oil exploitation.更多还原