李越哲, 殷杰, 叶琳,等.南堡凹陷沙一段烃源岩综合识别及分布预测[J].河南理工大学学报（自然科学版）,doi:10.16186/j.cnki.1673-9787.2022060055.

LI Y Z, YIN J, YE L,et al.Comprehensive Identification and Distribution Prediction of Source Rocks in Es₁ in Nanpu Sag[J].Journal of Henan Polytechnic University(Natural Science) ,doi:10.16186/j.cnki.1673-9787.2022060055.

南堡凹陷沙一段烃源岩综合识别及分布预测(网络首发)

李越哲, 殷杰, 叶琳, 王振奇

长江大学 地球科学学院，湖北 武汉 430100

摘要:针对南堡凹陷烃源岩在不同次凹中发育具有明显非均质性这一问题，深入开展烃源岩层 系识别与分布预测研究，对研究区不同沉积相带分别采用ΔlgR法和多元线性回归法建立烃源 岩TOC定量预测模型，同时确立工区烃源岩地震反射特征与地化特征的对应关系，并进行横 向追踪。结果表明：优质烃源岩TOC测井曲线以箱形为主，偶夹锯齿状特征曲线，地震反射特 征主要呈中-强振幅、中-高频、高连续性，并具亚平行-平行反射结构；中等烃源岩TOC测井曲 线以高值尖峰锯齿状为主，地震发射特征为中-弱振幅、中-低频、较连续，并具亚平行结构。平 面上沙一段烃源岩主要分布在5号和1号构造带之间、高柳断层与西南庄断层接合部的上盘以 及3号构造带附近。研究结果可为南堡凹陷非常规油气藏后续勘探开发提供理论指导作用。

关键词:南堡凹陷;沙一段;烃源岩;测井响应;分布预测

中图分类号：P618.13

doi:10.16186/j.cnki.1673-9787.2022060055

基金项目:国家自然科学基金资助项目（41402111）；湖北省博士后创新岗位基金资助项目（9621000812）

收稿日期:2022-06-22

修回日期:2022-09-28

网络首发日期:2023-08-03

Comprehensive Identification and Distribution Prediction of Source Rocks in Es₁ in Nanpu Sag（Online）

LI Yuezhe, YIN Jie, YE Lin, WANG Zhenqi

School of Geosciences，Yangtze University，Wuhan 430100，Hubei，China

Abstract:In order to solve the problem of obvious heterogeneity of source rock development and distribution in different sub sags in Nanpu Sag，the identification and distribution prediction of hydrocarbon source rock series were carried out in depth ΔlgR  method and the multivariate linear Law of Return method are used to establish the quantitative prediction model of TOC of source rock for different sedimentary facies belts in the study area. The corresponding relationship between seismic reflection characteristics and geochemical characteristics of Source rock in the work area is established，and horizontal tracking is carried out. The results show that the TOC curves of high quality source rocks are mainly box-shaped with sawtoothshaped characteristic curves，and the seismic reflection features are mainly of medium-strong amplitude， medium-high frequency，high continuity and subparallel-parallel reflection structure；the TOC curves of medium quality are high value spike sawtooth-shaped，and the seismic phase features are of medium-weak amplitude，medium-low frequency，high continuity and subparallel structure.The source rocks are mainly distributed between the No.5 and No.1 tectonic zones，the upper plate of the combination of the Gaoliu fault andthe Southwest Zhuang fault，and near the No.3 tectonic zone.As the exploration practice of unconventionaloil and gas reservoirs in Nanpu Depression gradually deepens，the above results provide theoretical guidance for the subsequent exploration and development.

Key words:Nanpu sag;Es;source rock;well logging response;distribution prediction

CLC：P618.13