摘要
针对松辽盆地泰康地区青山口组油气分布的复杂性与常规方法预测能力有限的难题,综合运用时频电磁法(TFEM)与地面实测资料,结合钻井、测井和三维地震数据,开展多源信息约束反演,构建高精度的电阻率与极化率剖面,识别潜在油气有利区。研究结果显示,TFEM在划分生油层、储集层及盖层方面具有良好的分辨能力,尤其在识别油气充注层位和异常体方面具有独特优势;在井位优化与地震设计过程中,应重点关注高电阻率、高极化率、双频相位异常与双频振幅异常等综合响应特征。此外,采用极化率作为储层含油气性判断指标时,其异常值需高于邻近已发现油气井的背景场强度。本研究提出的基于TFEM的油气有利区识别流程,可为松辽盆地乃至类似盆地的油气预测提供参考。
The hydrocarbon distribution in the Qingshankou Formation of the Taikang area,Songliao Basin,exhibits significant complexity,and conventional methods exhibit limited predictive capability.This study integrates the timefrequency electromagnetic method(TFEM)with surface measurement data,incorporating drilling,logging,and 3D seismic data to conduct multi-source information-constrained inversion.This approach constructs high-precision resistivity and polarizability profiles to identify potential hydrocarbon-favorable zones.The results demonstrate that TFEM exhibits strong resolution in delineating source rocks,reservoir layers,and cap rocks,with unique advantages in identifying hydrocarbon-charged intervals and anomalous bodies.During well location optimization and seismic design,it is necessary to match with high resistivity,high polarization rate,dual frequency phase anomaly and dual frequency amplitude anomaly.Furthermore,when using polarizability as an indicator of hydrocarbon-bearing potential in reservoirs,its anomalous value must exceed the background field intensity of nearby discovered hydrocarbonbearing wells.The hydrocarbon-favorable zone identification workflow based on TFEM proposed in this study provides a valuable reference for hydrocarbon prediction in the Songliao Basin and similar basins.
作者
张祥国
杨熙辰
ZHANG Xiangguo;YANG Xichen(Daqing Oilfield Exploration Division,Daqing 163453,Heilongjiang China;College of Geosciences,China University of Petroleum,Beijing 102249,China)
出处
《河南科学》
2025年第8期1115-1122,共8页
Henan Science
基金
国家自然科学基金项目(42072144)。
关键词
时频电磁
青山口组
松辽盆地
极化率
有利区预测
TFEM
Qingshankou Formation
Songliao Basin
polarizability
prediction of favorable area
