东北石油大学学报2018，Vol.42Issue(6)：32-40,72,前插3,11.DOI:10.3969/j.issn.2095-4107.2018.06.004
厄瓜多尔Oriente盆地DF油田白垩系M1层沉积特征
Sedimentary characteristics of the upper Cretaceous M1 sandstone in the DF oilfield, Oriente basin, Ecuador
摘要
Abstract
The upper Cretaceous M1 sandstone in the DF oilfield is rich in petroleum resource, but little research has been done about this area.To identify facies belts with the favorable reservoir conditions through the study of sedimentary microfacies and reservoir physical properties.Based on the comprehensive analysis of cores, well loggings and seismic data, the M1 SS member of the upper Cretaceous M1 sandstone was considered to have formed in outer tide-dominated estuary, five lithofacies types were identified, including tidal bar, tidal channel, sand flat, mixed flat and interbar, and characteristics of these five microfacies were described.At the same time, the paper clarified the microfacies distribution characteristics and space-time evaluation of each layer.At the end of M1-Zone member, the relative sea level raise to the maximum flooding surface, then began to fall, a small-scale regressive tide-dominated delta plain, including distributary channel, marsh and tidal flat, developed at the final infill phase of the large tide-dominated estuarine system, and the depositional model map was built.The reservoir physical properties of the upper Cretaceous M1 sandstone were controlled by microfacies, and in the area of interest, the physical properties of tidal bars were clarified to be the best and the next were tidal channels.Integrating reservoir physical properties of microfacies and the distribution characteristics of sand bodies, the most developed area of tidal sand bars was considered as the most favorable reservoirs.关键词
Oriente盆地/DF油田/M1层/沉积特征/沉积微相/外潮控河口湾/潮控三角洲平原Key words
Oriente basin/DF oilfield/the upper Cretaceous M1 sandstone/sedimentary characteristics/microfacies/outer tide-dominated estuary/tide-dominated delta plain分类
能源科技引用本文复制引用
刘慧盈,张克鑫,国殿斌,张超前..厄瓜多尔Oriente盆地DF油田白垩系M1层沉积特征[J].东北石油大学学报,2018,42(6):32-40,72,前插3,11.基金项目
国家自然科学基金项目 (41472119) （41472119）
国家科技重大专项 (2016ZX05031) （2016ZX05031）
中国石化股份有限公司重点实验室专项 (JKL18033) （JKL18033）
