摘要
根据岩心、钻井、测井、薄片分析等资料,采用沉积学、岩石学与成岩作用分析结合的方法,研究黄龙场地区飞仙关组储层特征及储层分布主控因素。结果表明:黄龙场地区储层岩性以鲕粒云岩、粉晶化的鲕粒云岩和鲕粒灰岩为主,储集岩类型、储渗空间类型及储层物性呈现明显的东西区带分异的特征。飞仙关组沉积期东高西低的古地貌,导致东西沉积相带差异明显,是形成东部台地边缘鲕滩有利储层的关键;压实、压溶作用是造成储层减孔的主要原因;早期胶结、充填与初期压实的配置关系对原生孔隙的保存意义重大;白云岩化形成的晶间隙是东部有利储层形成的重要因素;断裂—裂缝系统及埋藏溶蚀作用的发育,对西部不具先期孔隙层的非相控型储层的改造有限。该结果为川东北黄龙场地区飞仙关组未来勘探开发提供指导。
It is of great significance to fully recognize the reservoir in Huanglongchang area.The reservoir characteristics and its controlling factors were analyzed by using core,drilling,logging,thin section analysis data.The major reservoir lithology contains ooid dolomite and ooid limestone.Reservoir lithology,reservoir space and reservoir physical property are quite different from east to west.The palaeogeomorphology leads to facies differences from east to west during Feixianguan formation,which contributes to the reservoir in platform edge shallow facies.Compaction and pressolution is the main reason for the pore reduction of the reservoir.The relationship between early cementation and compaction is of great significance to the preservation of primary pores.Crystal gap of dolomitization is an important factor in the formation of reservoir.Fault fracture system and burial dissolution have limited effect in nonfacies controlled reservoir.The results provide guidance for the future exploration and development of Feixianguan formation in Huanglong field in northeast Sichuan province.
出处
《东北石油大学学报》
CAS
北大核心
2017年第5期33-42,共10页
Journal of Northeast Petroleum University
基金
国家自然科学基金项目(51374269)
重庆市教育委员会科学技术研究项目(KJ1601333
KJ1713346)
关键词
主控因素
储层特征
飞仙关组
黄龙场地区
川东北
major controlling factors
reservoir characteristics
Feixianguan formation
Huanglongchang area
northeastern Sichuan
