海洋地质前沿2025，Vol.41Issue(5)：14-21,8.DOI:10.16028/j.1009-2722.2024.173
三角洲平原多期分流河道储层隔夹层展布特征及其对剩余油分布的影响
The distribution characteristics of interlayers in multi-stage distributary channel reservoirs of deltaic plains and their influence on remaining oil distribution:a case study of the H6 reservoir of B Gas Field in Huangyan area,Xihu Sag
摘要
Abstract
The interlayer development mode in the reservoir has an important impact on the degree of the reserve production level and the distribution of remaining oil and gas.A thorough investigation on the core,logging,test,and analysis was conducted for the H6 reservoir of B Gas Field in the East China Sea to explain the complexity and the discrepancy between dynamic and static reserves and the low recovery efficiency.Through testing and analysis,the types,characteristics,and origins of interlayers were clarified,for which the logging identification standards of different types of interlayers in the study area were established and the spatial development mode of interlayers is described.Results reveal that interlayers in H6 reservoir are mostly lithological(argillaceous layer)type,and their genesis is mainly regulated by high-frequency cycles.Other less distributed interlayers are cause by physical property discrepancy and formed during sedimentation at the bottom of the river bed.The occurrence of interlayers in the H6 reservoir was seen in two types:inter-sandbody and intra-sandbody.The inter-sandbody in-terlayers have good continuity locally and distributed widely,playing a good role in obstructing the local fluid movement.However,the intra-sandbody interlayers are thin and sporadically scattered,thus have a limited block-ing ability.This study offered a basis for future oilfield exploration in the H6 reservoir.关键词
隔夹层/层次结构/测井识别/展布特征/剩余油气分布/H6气藏Key words
interlayer/hierarchical structure/logging identification/distribution feature/remaining oil distribu-tion/H6 reservoir分类
地质学引用本文复制引用
张妍,刘英辉,程超,荣乘锐,马恋,路颖..三角洲平原多期分流河道储层隔夹层展布特征及其对剩余油分布的影响[J].海洋地质前沿,2025,41(5):14-21,8.基金项目
中海石油(中国)有限公司重大科技专项"东海低渗大气田高效开发关键技术研究与示范应用"(KJZX-2024-0102) （中国）
