摘要
中国古生代具有多时代、多类型原型盆地叠加复合的特点,海相碳酸盐岩分布广、厚度大,受多期构造运动等因素的控制和影响,古岩溶十分发育。古岩溶的纵、横向分布控制了油气的分布,目前已在中国古生代地层中发现了十多个大型油气田。为了在我国古生代碳酸盐岩中发现更多、更大的油气田,从古生代构造演化、古岩溶发育期次、古岩溶特征、古岩溶成因、古岩溶储集特征及控油气作用等方面,并以塔里木盆地为例论述了中国古生代海相碳酸盐岩古岩溶储集特征与油气分布。结果认为:中国古生界油气藏特征及分布规律与国外基本相似,油气主要分布在古隆起、古斜坡,并与断裂带及区域性不整合有着密切的关系。
In Chinese Palaeozoic era,many multi-origin prototype basins were overlapped and composite,paleokarst was well-developed because of multi-period tectonic movement,large-thickness and widely distributed carbonate rocks of sea facies.Since the distribution of hydrocarbons was controlled by the structure of paleokarst in vertical and horizontal directions,more than 10 large oil or gas fields have been discovered there up till now.In order to discover more large oil and gas fields,this study discusses how the hydrocarbon distribution is related to the accumulation features of paleokarst from many aspects such as Palaeozoic tectonic evolution,periods of well-developed paleokarst,features of paleokarst,origins of paleokarst,features of reservoir space and oil or gas traps of paleokarst,and so on.The result from this study shows that either the characteristics or the distribution laws of Palaeozoic hydrocarbon reservoirs in China are similar to those in other countries,and hydrocarbons are mainly distributed in paleohighs or paleoslopes and closely related to faults zone and regional unconformity.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第6期1-12,共12页
Natural Gas Industry
