哈南地区腾格尔组一段沉积相研究

发布时间：2018-05-04 06:47

本文选题：二连盆地 + 哈南地区　；参考：《西南石油大学》2017年硕士论文

【摘要】：哈南地区在构造位置上属于二连盆地阿南凹陷东部,是华北油田二连公司的主要产油区之一,纵向上发育古生界和下白垩统阿尔善组、腾格尔组等主要含油层位。由于断层较发育,储层边界较难确定,目前对该区地层结构、沉积物源供给、沉积体系尚缺乏全面而深入的认识。本文以腾格尔组一段为主要研究目的层,以沉积学等学科理论为指导,在全区地层划分与对比的基础上,以岩心观察描述为基础,通过岩石相标定和测井相模式的建立,在单井相和剖面相研究的基础上,探讨了工区内沉积相的平面展布特征,并结合岩心分析化验资料和测井解释成果,得到如下结论与认识:1、根据标志层与沉积旋回特征,可将腾一段划分为TⅡ、TⅢ两个油组,受同沉积断层和潜山影响,地层厚度变化较大,南北向与东西向上均呈现出厚、薄相间的特征。2、根据岩石成分成熟度、结构成熟度、岩屑组成和泥岩颜色,结合区域地质背景,认为工区内东南部苏尼特隆起与西北部蒙古林凸起是腾一段地层的两个主要沉积物源区,东北部莎音乌苏凸起为次要物源区。3、腾一段沉积时属扇三角洲-湖泊相沉积体系,可进一步划分出4种亚相和6种微相。其中扇三角洲可分为扇三角洲前缘和前扇三角洲两个亚相,湖泊相可划分为滨浅湖与深湖-半深湖两个亚相。4、通过对各沉积微相物性分析资料的统计,发现水下分流河道微相是最有利的储集相带,其次是前缘席状砂,滩坝则较差。
[Abstract]:The Hanan area is located in the east of the two Lian basin in the south of the Anan sag of the basin, which is one of the main oil producing areas of the two Lian company of North China oil field. The main oil bearing strata are the Paleozoic and the lower Cretaceous ALSHAN formation and the Teng Ko Erh formation. The reservoir boundary is difficult to be determined because of the development of the fault. The depositional system is still lacking a comprehensive and deep understanding. This paper, guided by the first section of the Teng Ko Erh group, is based on the theory of sedimentology, based on the stratigraphic division and contrast of the whole region, based on the rock core observation description, and through the calibration of rock phase and the establishment of the log phase model, the foundation of the study of the single well phase and the section phase. The characteristics of the plane distribution of sedimentary facies in the industrial area are discussed, and the following conclusions and knowledge are obtained by combining core analysis and logging interpretation. 1, according to the characteristics of the marker and sedimentary cycles, the Tengyi section can be divided into T II, T III and two oil groups, influenced by the synsedimentary fault and Qianshan, and the thickness of the strata varies greatly. According to the maturity of the rock composition, the structural maturity, the composition of the debris and the color of the mudstone, and the regional geological background, the southeastern Mongolia uplift and the Mongolia forest uplift in the northwest part are the main source areas of the Tengyi stratum, and the shakesu Wusu uplift in the northeastern part of the shakesuru Susu uplift is a secondary source. In the area.3, teng1 is a fan delta lacustrine sedimentary system, which can be further divided into 4 subfacies and 6 microfacies, of which fan delta can be divided into two subfacies of fan delta front and front fan delta, and the lake facies can be divided into two subfacies of shallow lake and deep lake and half deep Lake, and the statistical data of sedimentary microfacies are analyzed. It is found that the microfacies of underwater distributary channel is the most favorable reservoir facies belt, followed by the frontal sheet sand, and the beach bar is poor.

【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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