【摘要】 吐哈盆地红连油田下白垩统三十里大墩组与上侏罗统喀拉扎组之间发现了一套新的含油气地层,但对这套地层的归属存在不同的划分方案,这给新发现的含油气地层的命名、对比和油气勘探潜力评价以及开发技术政策的制定等带来了不利影响。指出白垩系与侏罗系的界限对应于燕山构造运动第Ⅱ幕产生的不整合面,准确地划分白垩系底界不整合面是正确划分红南9-12井新发现的含油气地层的关键。基于岩心、测井、地震反射等多方面资料的研究,认为将白垩系底界不整合面划分在新发现的含油气层底界较为合理,这样三十里大墩组进一步可划分为上下2个岩性段,新发现的含油气地层称为下段(K1s1),原划分的三十里大墩组统称上段(K1s2)。更多还原

【Abstract】 A new set of oil-and gas-bearing reservoirs between Cretaceous and Jurassic have been found in the Honglian oilfield,Tuha basin.But there are different opinions on its classification,which has negative effect on the naming,correlation of the stratum,and the evaluation of oil and gas exploration potential as well as the making of development technology policies.The unconformity surface between the Cretaceous and Jurassic resulted from the second episode of Yanshanian tectonic movement.This paper presents the correlation and demonstration of several opinions on the new oil-and gas-bearing reservoir classification based on the integration of multi-disciplinary information such as core,logging and seismic feature,etc.It is concluded that the new oil-and gas-bearing reservoirs discovered in Well Hongnan9-12 should be classified to the Lower Cretaceous, for it is located above the unconformity surface between the Cretaceous and Jurassic.更多还原