基于时频电磁法的含油气有利区预测研究—

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摘要时频电磁法能够通过电阻率和极化率异常直接检测含油气性，近年来在烃类检测中屡获突破。为预测伊犁盆地的含油气性，开展了时频电磁法勘探研究工作。根据研究区的地质构造特征，构建二维层状介质模型，开展正演模拟研究。利用模型正演结果指导野外施工，保障野外采集数据的质量；利用模型反演结果识别、辨别采集数据对地电信息的分辨率，为数据处理提供可靠的依据。在此基础上开展了拟二维电阻率断面成像反演、极化率约束反演等关键技术研究，获得了丰富的地质和地球物理信息。通过对研究区电测井资料进行分析，总结伊犁盆地含油气储层的时频电磁异常特征，并以此为基础对二叠系、三叠系等目标层含油气性进行了预测，优选了下一步勘探有利目标。

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关键词：时频电磁法烃类检测极化率异常有利区预测

Abstract： The time-frequency domain electromagnetic (TFEM) sounding technique can directly detect the oil and gas characteristics through the anomaly of resistivity and polarizability. In recent years, it has made some breakthroughs in the hydrocarbon detection. In order to predict the petroliferous property of the Ili basin, The TFEM was carried out. According to the geological structure characteristics of the study area, a Two-Dimensional layered medium model is constructed, and the forward modeling is carried out. We use the forward modeling results to guide the field construction and ensure the quality of the field data collection. We use the model inversion results to identify and distinguish the resolution of the geoelectric information, and provide a reliable basis for data processing. Based on that, the key technologies such as 2D 2-D resistivity tomography imaging inversion, polarimetric constrained inversion have been developed, and we obtained the abundant geological and geophysical information. Though the analysis of the electrical logging data in the study area, the characteristics of TFEM anomalies of the hydrocarbon reservoirs in the Ili basin are summarized. And more, the oil-gas properties of the Permian and Triassic layers have been predicted, and the next favorable exploration targets have been optimized.

Key words： Time Frequency Domain Electromagnetic Hydrocarbon Detection Polarizability Anomaly Favorable Area Prediction

收稿日期: 2016-06-09; 出版日期: 2020-04-03

基金资助:

本研究由地质矿产调查评价专项（编号：12120115006601和 DD20160181）和国家重点研发计划项目（编号：2016YFC060110204和2016YFC060110305）资助。

通讯作者: 田玉昆(tyksango@gmail.com) E-mail: tyksango@gmail.com

作者简介: 梅岩辉，博士，就读于中国地质大学（武汉）资源学院矿产普查与勘探专业。目前就职于中国地质调查局油气资源调查中心，高级工程师，从事地球物理勘探方法及储层预测研究。Email：46687345@qq.com。

引用本文:

. 基于时频电磁法的含油气有利区预测研究——以伊犁盆地为例[J]. 应用地球物理, 2018, 15(3-4（2）): 697-709.

. Prediction study on the hydrocarbon reservoir based on Time-Frequency Domain Electromagnetic ----Taking the Ili basin as the example[J]. APPLIED GEOPHYSICS, 2018, 15(3-4（2）): 697-709.