滨里海盆地东缘石炭系层序地层研究  

Sequence Stratigraphy of Carboniferous in Eastern Margin of Pre-Caspian Basin

作　　者：苗钱友[1] 王燕琨[2] 朱筱敏[1] 于炳松[3] 蒋俊超[2] 

机构地区：[1]中国石油大学地球科学学院,北京102249 [2]中国石油勘探开发研究院,北京100083 [3]中国地质大学地球科学与资源学院,北京100083

出　　处：《新疆石油地质》2013年第4期483-487,共5页Xinjiang Petroleum Geology

摘　　要：应用层序地层学理论,对滨里海盆地东缘石炭系各岩性段进行分析对比和沉积古地理研究,建立了研究区的层序地层格架。将研究区石炭系划分成5个二级层序(自下而上依次为SS1—SS5)和11个三级层序(依次为S1—S11)。在层序等时对比的基础上,研究了各层序岩性组合在盆地中不同区带的发育状况、展布特点以及优质储集层可能的发育区。二级层序SS5和SS2高位体系域的一套白云岩储集层和一套滩体灰岩,分别与SS5顶部和SS3中广泛发育的泥岩盖层组成良好的储盖组合,并形成重要的油气藏。从已发现的油气藏分布来看,区域构造位置相对高的部位有利于碳酸盐岩储集相带的发育。The analysis,comparison and sedimentary paleogeographic study of Carboniferous strata in the eastern margin of Pre-Caspian basin are conducted using sequence stratigraphy theory,developing the sequence stratigraphic framework in this area.The Carboniferous is divided into 5 second-order sequences,namely SS1-SS5 from the bottom up,and 11 third-order sequences,namely S1-S11 in turn.On the basis of isochronous correlation,the sedimentary feature,lithological combination and the favorable area of high-quality reservoir in different zones of this basin are presented.It is suggested that in highstand system tract（HST） the SS5 and SS2 occurs one dolomite reservoir and one beach limestone reservoir,respectively corresponding to the mudstone cap rocks of top SS5 and SS3,shaping good reservoir-seal assemblages and forming important oil-gas reservoirs.From the discovered reservoirs distribution,relatively high parts in regional structure are favorable for development of carbonate reservoirs.

关 键 词：滨里海盆地 石炭系 层序地层 储盖组合 

分 类 号：TE111.3[石油与天然气工程—油气勘探]