桂林理工大学学报2017，Vol.37Issue(1)：37-46,10.DOI:10.3969/j.issn.1674-9057.2017.01.005
高磨地区龙王庙组滩相储层特征及主控因素
Characteristics and main controlling factors of Lower Cambrian Longwangmiao Formation beach-facies reservoirs in Gaoshiti-Moxi area, central Sichuan Basin
摘要
Abstract
Based on the methods of core observation,identifying thin sections and physical property testing,it is indicated that the reservoir in Gaoshiti-Moxi area Longwangmiao Formation mainly belongs to the low porosity,low permeability reservoir,partly to the low porosity,high permeability reservoir.The reservoir is mainly composed of arene dolomite,oolitic dolomite,powder-crystal dolomite and "piebald" powder dolomite,and the reservoir spaces mainly include intergranular dissolved pores,intercrystalline dissolved pores,intragranular dissolved pores and moldic pores,residual intergranular pores,gypsum mould pores,caves and fractures.The reservoirs can be subdivided into five types:crystal grain dolostone reservoirs with dense bedding caves (Type Ⅰ -1),grain dolostone reservoirs with caves (Type Ⅰ-2),grain dolostone reservoirs with pinholes and separate caves (Type Ⅱ-1),crystal grain dolostone reservoirs with pinholes (Type Ⅱ-2),"piebald" crystal grain dolostone reservoirs with dissolved pores and separate caves (Type Ⅲ) (the reservoir physical property varies worse and worse successively).Lithology,sedimentary microfacies,dolomitization and karstification are the keys for the development of dolomite reservoir of Longwangmiao Formation.The arene dolomite of shoal core and powder dolomite of dolomite flat are the most important factors to the reservoir.The first penecontemporaneous dolomitization is beneficial to pores reservation.Penecontemporaneous karstification and epigenesis karstification are the key factors to produce dissolved pores and caves.Burial karstification improves the reservoir performance further.关键词
龙王庙组/滩相/储层特征/主控因素/高石梯-磨溪地区Key words
Longwangmiao Formation/beach facies/reservoir characteristics/main controlling factors/Gaoshiti-Moxi area分类
天文与地球科学引用本文复制引用
邢梦妍,胡明毅,高达,王頔,王静怡,刘泠杉..高磨地区龙王庙组滩相储层特征及主控因素[J].桂林理工大学学报,2017,37(1):37-46,10.基金项目
国家自然科学基金项目(41372126) （41372126）
国家重大科技专项(2016ZX05007-002) （2016ZX05007-002）
湖北省创新群体基金项目(2015CFA024) （2015CFA024）
