摘要
Abstract
As a significant component of turbidite deposition system,turbidite channel has been proven challenging due to its complicated sedimentary hierarchy and strong heterogeneity.Currently,the quantitative research on deep-water turbidite channels mostly focuses on channel reservoirs,but less attention is paid to barrier and interlayer.In the later stage of high water cut development,the influence of interlayer in a single channel on the prediction of remaining oil cannot be ignored,and it is necessary to study the interlayer.In this study,a set of characterization and modeling approach are formed for the barrier and interlayer.First of all,based on core,logging and geophysical techniques,the three-level interlayer architecture levels and models within the reservoir are formed.Then,through the pre-stack shale inversion,the mud interlayer identifica-tion data body is formed,and on this basis,the geometric characteristics and scale of the interlayer are quantitatively studied.Finally,a multi-level nested method based on target simulation-sequential indicator simulation-multi-point statistics was used to establish a sedimentary microfacies model of different levels of interlayer in a single turbidite channel,and the quantitative simulation of single sand body level of deep-water turbidite under sparse well pattern conditions was realized.After com-parison and verification of posterior wells,the model predicts that the lithology coincidence rate of interlayers is 87％.This modeling approach realizes the quantitative characterization of the interlayer of single sand body,which greatly improves the characterization accuracy of turbidite reservoir,and provides important guidance for remaining oil prediction and production.关键词
浊积水道/隔夹层定量表征/嵌套建模/刚果盆地/西非Key words
turbidite channel/interlayer chracterization/nestification geomodelling/Congo Basin/West Africa分类
能源科技
