川东北黄龙场地区飞仙关组储层特征及其分布主控因素

发布时间：2019-07-09 11:20

【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。
[Abstract]:Based on the data of core, drilling, logging and thin slice analysis, the reservoir characteristics and main control factors of reservoir distribution in Feixianguan formation in Huanglongchang area are studied by means of sedimentology, petrology and diagenetic analysis. The results show that the reservoir lithology in Huanglongchang area is mainly oolitic dolomite, powdered oolitic dolomite and oolitic limestone, and the reservoir rock type, reservoir permeability space type and reservoir physical properties show obvious characteristics of east-west zone differentiation. The paleogeomorphology of Feixianguan formation is high in the east and low in the west, which leads to the obvious difference between the east and west sedimentary facies belts, which is the key to the formation of the favorable reservoir at the edge of the eastern platform. Compaction and compaction are the main causes of reservoir pore reduction. The relationship between early bonding, filling and initial compaction is of great significance to the preservation of primary pores. The crystal gap formed by dolomite is an important factor for the formation of favorable reservoirs in the east. With the development of fault-fracture system and buried dissolution, the transformation of non-phased reservoirs with no pre-pore layer in the west is limited. The results provide guidance for future exploration and development of Feixianguan formation in Huanglongchang area, northeast Sichuan.
【作者单位】：中国石油西南油气田分公司川东北气矿;重庆科技学院石油与天然气工程学院;
【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)
【分类号】：TE31

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