鄂尔多斯盆地张韩地区长8_2油藏沉积微相研究  

Study on Sedimentary Microfacies of Chang 8_2 Reservoir in Zhanghan Area,Ordos Basin

作　　者：李阳 

机构地区：[1]中石化华北油气分公司采油二厂,宁夏盐池751500

出　　处：《辽宁化工》2016年第12期1545-1548,共4页Liaoning Chemical Industry

摘　　要：在前人区域沉积环境研究成果的基础上,通过对鄂尔多斯盆地张韩地区长8_2油层钻井、录井、测井以及岩心样品等资料进行综合研究,以岩石相标志及测井相分析为基础,采用沉积学原理和方法对张韩地区长8_2油层的沉积环境进行了系统分析。结果表明,张韩地区长8_2油层为三角洲沉积体系,主要发育了三角洲前缘亚相,可进一步划分出三种沉积微相:水下分流河道、河口坝和支流间湾,水下分流河道微相为储层骨架砂体。同时对沉积微相与油气成藏进行了分析,认为有利的沉积相带控制了油气运移和聚集,三角洲前缘水下分流河道微相是油气聚集的主要场所,也是下一步张韩地区长8_2油藏勘探开发的方向。On the basis of predecessors＇ research results of regional sedimentary environment, through comprehensive analysis of well drilling, borehole log, well logging and core sample data of Chang 82 reservoir in Zhanghan area of Ordos Basin, based on the rock facies marks and log facies analysis, sedimentary environment on Chang 82 oil reservoir in Zhanghan area was analyzed by the principle and method of sedimentology. The results show that Chang 82 reservoir belongs to delta sedimentary system in Zhanghan area, and the delta front sedimentary intrafacies have been mainly developed. The delta front intrafacies can be further divided into three types of sedimentary microfacies： subaqueous distributary channel, mouth bar and tributary bay microfacies, and subaqueous distributary channel is sand bodies of reservoir skeleton. At the same time, the sedimentary micro facies and hydrocarbon accumulation were analyzed. The results show that the hydrocarbon migration and accumulation are controlled by favorable sedimentary facies belt, the subaqueous distributary channel on delta front sedimentary intrafacies is main hydrocarbon accumulation place, and it is the further direction of exploration and development of Chang 82 reservoir of Zhanghan area in the next step.

关 键 词：张韩地区 长82油藏 沉积微相 水下分流河道 油气聚集 

分 类 号：TE122[石油与天然气工程—油气勘探]