安塞油田侯市区长62亚油层组沉积微相特征与油气分布

以岩心分析资料及大量测井与录井资料为基础，在沉积特征分析的基础上，认为安塞油田侯市区长62为河湖三角洲相的前缘亚相沉积，并将三角洲前缘进一步划分为水下分流河道、河口坝、前缘席状砂、分流间湾四种沉积微相。控油规律分析表明，沉积微相对油气分布起着控制作用，水下分流河道为油气运移聚集的最有利相带，同时岩性致密层对油气侧向运移的遮挡作用是控制油气分布的主要因素。

Characteristics of Microfacies and oil-gas distribution of chang62 sub-oil-bearing beds in Houshi District, Ansai Oilfield

Based on core lab,well log and geological logging data and analysis of the depositional characteristics,it is believed that the chang62 sub-oil-bearing beds of the Ansai oilfield belongs to river and lake dominated delta front subfacies,the delta front is furthermore divided into the underwater distributary channels,the mouth bar,frontal sheet and inter-tributary channel.It can be found that sedimentary facies in the study area have certain effect on oil distribution.It suggested that the underwater distrib...