| 大地电磁技术测定的准噶尔盆地乌伦古坳陷至北隆起带石炭系及油气前景分析 |
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| 引用本文： | 罗卫锋,胡志方,李桂林,杨小鹏,何兰芳,杨云见,孙启隆,张平川,张启燕.大地电磁技术测定的准噶尔盆地乌伦古坳陷至北隆起带石炭系及油气前景分析[J].中国地质,2022,49(5):1591-1604. |
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| 作者姓名： | 罗卫锋 胡志方 李桂林 杨小鹏 何兰芳 杨云见 孙启隆 张平川 张启燕 |
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| 作者单位： | 中国地质调查局油气资源调查中心, 北京 100029;吉林大学地球科学学院, 吉林 长春 130061;中国科学院地质与地球物理研究所, 北京 100029;东方地球物理公司综合物化探处, 河北 涿州 072751 |
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| 基金项目： | 国家重点研发计划项目(2016YFC060110204)、中国地质调查局项目(DD20160170)联合资助。 |
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| 摘 要： | 【研究目的】 本文以准噶尔盆地乌伦古坳陷至乌伦古北隆起带为研究区，研究石炭纪地层沉积、分布特征，为该区地质结构研究和油气勘查工作提供了依据和参考。【研究方法】 采集大地电磁测深数据，结合以往重磁电震资料，采用二维共轭梯度反演、最优化电性分层等技术获取石炭纪地层、断裂构造展布特征，为火成岩覆盖区研究石炭纪地层提供了有效的方法。【研究结果】 利用大地电磁测深技术结合重磁电震资料开展综合处理分析，获得研究区石炭系厚度图、石炭系埋深图，初步确定了上下石炭统的分界面，查明了石炭纪地层的分布特征，索索泉凹陷、福海坳陷和扎河坝坳陷为3个石炭纪地层沉降中心，具有较好的油气勘查前景。【结论】 在火成岩覆盖区，采用大地电磁测深、重磁电震综合处理解释技术为石炭纪地层研究提供了有效的技术支撑。
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| 关 键 词： | 石炭系 火成岩 大地电磁测深 地震勘探 综合处理解释 油气勘查工程 乌伦古凹陷 准噶尔盆地 |
| 收稿时间： | 2019/7/1 0:00:00 |
| 修稿时间： | 2020/3/11 0:00:00 |
Carboniferous strata and their oil and gas prospects from Wulungu depression to the north uplift in the Junggar Basin based on magnetotelluric technology |
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| LUO Weifeng,HU Zhifang,LI Guilin,YANG Xiaopeng,HE Lanfang,YANG Yunjian,SUN Qilong,ZHANG Pingchuan,ZHANG Qiyan.Carboniferous strata and their oil and gas prospects from Wulungu depression to the north uplift in the Junggar Basin based on magnetotelluric technology[J].Chinese Geology,2022,49(5):1591-1604. |
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| Authors: | LUO Weifeng HU Zhifang LI Guilin YANG Xiaopeng HE Lanfang YANG Yunjian SUN Qilong ZHANG Pingchuan ZHANG Qiyan |
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| Institution: | Oil& Gas Survey, China Geological Survey, Beijing 100029, China;College of Earth Sciences, Jilin University, Changchun 130061, Jilin, China;Institute of Geology and Geophysics, CAS, Beijing 100029;4. Non Seismic Department, BGP Inc., CNPC, Hebei 072751, Zhuozhou, China |
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| Abstract: | This paper is the result of oil and gas exploration engineering.Objective] In this paper, the sedimentary and distribution characteristics of Carboniferous strata are studied in the study area from Wulungu Depression to Wulungu North Uplift in Junggar Basin, which provides a basis and reference for the study of geological structure and oil and gas exploration in this area. Methods]Acquisition of magnetotelluric sounding data, combined with previous gravity, magnetic and electrical seismic data, using two- dimensional conjugate gradient inversion, optimization of electrical stratification technology to obtain the distribution characteristics of Carboniferous strata and fault structure, provides an effective method for the study of Carboniferous strata in igneous rock covered area. Results] Using magnetotelluric sounding technology combined with gravity, magnetic, electrical and seismic data to carry out comprehensive processing and analysis, the thickness map and burial depth map of the Carboniferous system in the study area were obtained, the interface between the upper and lower Carboniferous strata was preliminarily determined, and the distribution characteristics of the Carboniferous strata were identified. The Suosuoquan sag, Fuhai depression and Zhaheba depression are three subsidence centers of Carboniferous strata, which have good prospects for oil and gas exploration. Conclsions] In igneous rock covered area, the comprehensive processing and interpretation technology of magnetotelluric sounding and gravity-magnetic-electric-seismic provides effective technical support for the study of Carboniferous strata. |
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| Keywords: | Carboniferous igneous rock magnetotelluric sounding seismic exploration Interpretation of comprehensive processing oil and gas exploration engineering Wulungu depression Junggar basin |
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