【作者】 娄生瑞；

【导师】 柳成志；

【作者基本信息】 东北石油大学 ， 矿物学、岩石学、矿床学， 2011， 硕士

【摘要】 本文以层序地层学和沉积学理论为指导,应用地震、测井、钻井等资料,总结方正断陷下第三系新安村+乌云组的层序识别与划分标志,建立层序地层格架。将下第三系新安村+乌云组分为两个三级层序。根据地震地层学,利用地震反射终止识别出上超、下超、削截和下切谷等地震现象,识别出下切谷主要分布在T3和T5这两个不整合界面处,为沉积相带的划分提供一定的依据。通过对岩心观察描述、录井和测井资料,结合地震资料分析得出,方正断陷三维区下第三系新安村+乌云组地层中,总结出研究区的沉积相为扇三角洲相,湖泊相和湖底扇相。并在研究区层序地层格架内,建立各沉积相的识别标志,进行平面相分析。方正断陷新安村+乌云组有利区的预测结果显示出扇三角洲前缘为有利油气储集相带,其中水下分流河道最有利油气储集。综合分析其砂岩厚度、储层物性、地化指标等认为方正断陷研究区SQ1为最有利的储层。SQ1上发育有好的沉积相带类型,包括湖底扇和扇三角洲前缘,其上均具有良好的盖层体系,配合各类型的圈闭以及发育的断裂系统,是有利的勘探地层。更多还原

【Abstract】 In this paper, it consists the theory of sequence stratigraphy and sedimentology theory, seismic, logging and drilling data. Then it has also summed the identification of sequence interfaces and the division signs of sequence stratigraphic units of the Xin’ancun group, And the same time it has established the sequence stratigraphic framework. The paper divides the Xin’ancun group in Eogene into two 3-order sequences.According to seismic stratigraphy, seismic reflection termination identified on ultrasound, the next super, truncated and incised valley and other seismic phenomena, Incised valley identified mainly in the T3 and T5 at the interface of these two unconformities, sedimentary facies provide a basis for the division.Combined sequence stratigraphy with oil and gas bearing relationship, it shows that:the depositional systems contains fan delta, lake system and the lake floor fan system in the main study area. And this paper has analysis the flat sedimentary faces. In this sequence stratigraphic framework, it establish a system of identification of the deposition, the phase of the plane.Favorable area prediction results show that:fan delta front facies favorable oil and gas reservoirs, water diversion channel which is the most favorable oil and gas reservoirs. From the horizon point of view, The favorable area for oil and gas is Xin’ancun andWuyun Group. Comprehensive analysis of the sandstone thickness, reservoir properties, geochemical indicators that the most favorable reservoir SQ1. The development of a good type of sedimentary facies, including the lake floor fan and fan delta front is SQ1上. Its a good cover on both systems, with the development of various types of traps and the fracture system is conducive to exploration horizons.更多还原