中南大学学报（自然科学版）2011，Vol.42Issue(5)：1384-1392,9.
哥伦比亚Velasquez油田始新统Guaduas组沉积微相与剩余油分布
Sedimentary microfacies and remaining oil distribution of the Eocene Guaduas formation in Velasquez Oilfield, Columbia
摘要
Abstract
To get a proper knowledge of remaining oil distribution and improving oil recovery rate in Velasquez oilfield,the core observation, depositional structure, lithologic, granularity and seismic response characteristics were analyzed.The sedimentary condition, sedimentary micro-facies and their features were studied, and the model of proper reservoir was built.The predict sandbodies' thickness was predicted using the root-mean-square amplitude, and through it the micro-facies distribution was discussed.The relationship between microfacies and remaining oil distribution was discussed.The results show that the depositional environment of the Guaduas formation in 48-45 fault block belongs to braid delta deposit.The depositional facies include two subfacies (braided river delta plain and braided river delta front)and six micro-facies (braided channel, flood plain, subaqueous distributary channel, mouth bar, sheet sand and interdistributory bay).The lake level has rise-fall-rise during Guaduas formation sedimentary period.Reservoir water flooding degree and remaining oil distribution are controlled by micro-facies.And the remanent oil is relatively concentrated in the top of braided channel and subaqueous distributary channel, the side of mouth bar and sheet sand,which are the major targets of next development adjustment and remaining oil potential tapping.关键词
Velasquez油田/Guaduas组/沉积微相/辫状河三角洲/剩余油分布分类
能源科技引用本文复制引用
赵彬,侯加根,张国一,陈诗望,刘钰铭..哥伦比亚Velasquez油田始新统Guaduas组沉积微相与剩余油分布[J].中南大学学报（自然科学版）,2011,42(5):1384-1392,9.基金项目
国家科技重大专项(2011ZX05009,2011ZX05010) （2011ZX05009,2011ZX05010）
