摘要
文章根据野外露头和岩心资料,依据沉积旋回、岩电特征、沉积构造等,对鄂尔多斯盆地东部米脂地区的二叠系下石盒子盒6-盒8段和山西组山1-山2段沉积相进行了研究,识别出了辨状河、三角洲2种沉积相类型[6],并进一步划分出了心滩、河道充填、主分流河道、次分流河道、河道间和分流间湾等沉积微相。通过对有效砂体控制因素分析,明确有效储层主要为心滩、河道充填、主分流河道的中粗砂岩相和粗砂岩相。
In this paper, according to outcrop, core data, depositional cycle , lithology-electrical property and sedimentary structure, sedimentary facies of member6, 7 and 8 in shihezi formation and member 1 and 2 in shanzi formation are studied in mizhi gas field in the east of the ordos basin. Braided channel and delta are are identified, and some mierofacies are classified, for example channel bar, channel fill, primary distributary channel, sub distributary channel, interchannel and distributary channel bay. It is defined that valid reservoirs are the medium --coarse sands and coarse sands in channel bar, channel fill and primary distributary channel by the analysis of controlling factors of valid sands.
出处
《内蒙古石油化工》
CAS
2008年第23期146-148,共3页
Inner Mongolia Petrochemical Industry
关键词
鄂尔多斯盆地
米脂气田
沉积相
有效储层
影响因素
Ordos Basin
Mizhi Gas Field
Sedimentary Faeies
Valid Reservoir
Controlling Factor
