酒泉东部盆地侏罗系的喷油与盆地分析

OIL INJECTION AND BASIN STUDY OF FHE JURASSIC IN EASTERN JIUQUAN BASIN

徐旺

Xu Wang

中国石油天然气总公司石油勘探开发科学研究院, 北京 100083

Beijing Institute of Petroleum Exploration and Development

酒东盆地具有与酒西相似的地质特征,如所处区域构造位置相同、盆地形成时间相同、烃源岩发育相近、构造演化也相似。但酒东盆地断陷期结束早,盆地大多数断层未上延至中沟组和第三系,因而酒东至今未发现第三系次生油藏,而对侏罗-白垩系深部油藏保存有利。盆地内长沙岭构造带处于"凹中隆",油气条件十分有利,向西应注意文殊山凸起倾没带潜山油气藏的存在,酒深1井侏罗系的喷油提醒人们应重视走廊区保罗系的重新评价。

The geologic features of eastern Jiuquan Basin such as the tectonic setting and evolu-tion,formative age of basin,the occurrence of source rocks are similar to those of westernJiuquan Basin.However,most faults in the eastern Jiuquan Basin do not reach the Zhong-gou Formation and Tertiary due to an earlier cease of faulting activities.Therefore no Ter-tiary secondary oil pool has been discovered in E.Jiuquan Basin,although it is favourablefor the preservation of deep Jurassic-Cretaceous oil/gas pools.Because Changsha Lingstructural belt in the basin is an"uplift within depression",the conditions for oil/gas accu-mulation are very favourable.Further to the west,it is believed that more attentionshould be paid to the occurrence of the buried-hill oil /gas pools on the dipping slope ofWen Shushan embossment.Oil injection from the Jurassic of the Jiusheng No.1 well re-minds us of the importance to re-evaluate oil/gas prospect of the Jurassic in the Corridorarea.

https://doi.org/10.11781/sysydz199402103