| 广域电磁法在鄂尔多斯盆地西南缘含油富集区探测中的应用 |
| |
| 引用本文： | 王宏宇,李帝铨,柳建新,薛国强,郭文波.广域电磁法在鄂尔多斯盆地西南缘含油富集区探测中的应用[J].地球物理学进展,2020(3):1038-1047. |
| |
| 作者姓名： | 王宏宇 李帝铨 柳建新 薛国强 郭文波 |
| |
| 作者单位： | 中南大学地球科学与信息物理学院;西安西北有色物化探总队有限公司;中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所;中国科学院大学 |
| |
| 摘 要： | 宁夏固原地区位于鄂尔多斯盆地西南缘,2000年至今利用地震勘探等手段,在侏罗系延安组、三叠系延长组发现了多个含油富集区,油藏类型为构造岩性油藏.但该地区河谷残塬、黄土丘陵广泛分布,地表剥蚀、侵蚀严重,其独特的地质、地貌环境对常规深层油气检测技术带来了挑战,常常出现地震资料采集难度大、成本高、数据品质较差等问题,因此有必要开发利用新的油气探测方法进行深部油气探测.本文利用广域电磁法在鄂尔多斯盆地西南缘含油富集区-宁夏固原地区进行方法应用研究,采用"重磁电三维反演成像解释一体化系统"进行广域电磁法数据处理.获得了地下真实的电性分布,建立了广域视电阻率与目标层的电性关系,精细刻画了研究区内低幅构造与鼻状构造的发育情况以及圈闭特征.在综合研究的基础上,基本查明了测区内延安组地层、延长组地层分布、厚度及构造圈闭等信息,形成了适用于鄂尔多斯盆地西南缘油气勘探的广域电磁数据采集及处理方法.研究表明广域电磁法在该地区可作为优选含油富集区的有效探测手段.
|
| 关 键 词： | 广域电磁法 鄂尔多斯盆地 油气勘探 低幅构造 |
Application of wide-field electromagnetic method in the detection of oil-rich enrichment areas in the southwestern margin of the Ordos basin |
| |
| WANG Hong-yu,LI Di-quan,LIU Jian-xin,XUE Guo-qiang,GUO Wen-bo.Application of wide-field electromagnetic method in the detection of oil-rich enrichment areas in the southwestern margin of the Ordos basin[J].Progress in Geophysics,2020(3):1038-1047. |
| |
| Authors: | WANG Hong-yu LI Di-quan LIU Jian-xin XUE Guo-qiang GUO Wen-bo |
| |
| Institution: | (School of Geosciences and Info-Physics of Central South University,Changsha 410083,China;Xi’an Geophysical and Geochemical Exploration Company,Northwest Bureau of Geological Non-ferrous Metals,Xi'an 710068,China;Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100029,China) |
| |
| Abstract: | The Guyuan area of Ningxia is located in the southwestern margin of the Ordos basin.Since 2000,a number of oil-rich areas were discovered in the Jurassic Yan’an formation and the Triassic Yanchang formation by means of seismic exploration.The hydrocarbon reservoir is controlled by structure and lithologic.However,the valleys and loess hills in the study area are widely distributed,and the surface erosion and erosion are serious.The unique geological and geomorphic environment poses a challenge to the conventional deep oil and gas detection technology.It is often difficult to collect seismic data which was high cost,poor quality,etc.It is necessary to develop deep oil and gas exploration using new oil and gas exploration methods A wide-field electromagnetic method was used to detect the oil-rich enrichment area in the southwestern margin of the Ordos basin-Guyuan Ningxia,and the data processing was carried out by using the"three-dimensional inversion imaging and interpretation integrated system of gravity and magnetism",and the wide-area electromagnetic method was summarized.The technical process of identifying deep reservoirs has obtained the true electrical characteristics of the underground,established the electrical relationship between the wide-field apparent resistivity and the target,and elaborated the development of low-amplitude structures and nasal structures in the study area.On the basis of comprehensive research,information such as the formation,depth and structural traps of the Yan’an formation and the Yanchang formation in the survey area were basically ascertained.Through this work,a wide-field electromagnetic data acquisition and processing method suitable for oil and gas exploration in the southwestern margin of the Ordos basin has been formed,which indicates that the wide-field electromagnetic method is an effective means of detecting oil-rich enrichment areas in this area. |
| |
| Keywords: | Wide field electromagnetic method Ordos basin Oil exploration Low amplitude structure |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
