石油地震资料在隐伏活断层探测中的应用——以松原活断层探测为例

doi:10.3969/j.issn.0253-4967.2016.02.015

地震地质 ›› 2016, Vol. 38 ›› Issue (2): 423-433.DOI: 10.3969/j.issn.0253-4967.2016.02.015

石油地震资料在隐伏活断层探测中的应用——以松原活断层探测为例

尉洋^1,2, 沈军^1,2, 于晓辉², 吴晓歌³

1. 中国地震局兰州地震研究所, 兰州 730000;
2. 防灾科技学院, 河北三河 065201;
3. 西南石油大学, 成都 610500

收稿日期:2015-04-14 修回日期:2015-12-04 出版日期:2016-06-20 发布日期:2016-08-11
通讯作者: 沈军,研究员,E-mail:shenjuneq@qq.com
作者简介:尉洋,男,1989年出生,2013年毕业于防灾科技学院地质学专业,现为中国地震局兰州地震研究所在读硕士研究生,主要从事活动构造方面的研究,E-mail:yuyang_eq@126.com。
基金资助:
中国地震局教师基金（2012001）、财政部重大专项“我国地震重点监视防御区活动断层地震危险性评价”、国家自然科学基金（41372216）、中央高校基本科研业务费专项资金创新团队资助计划项目（ZY20120102）与国家国际科技合作专项项目（2012DFR20440K02）共同资助。

THE APPLICATION OF PETROLEUM SEISMIC DATA TO THE BURIED ACTIVE FAULT DETECTION——A CASE STUDY OF ACTIVE FAULTS SURVEYING IN SONGYUAN CITY

YU Yang^1,2, SHEN Jun^1,2, YU Xiao-hui², WU Xiao-ge³

1. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China;
2. Institute of Disaster Prevention, Sanhe, Hebei 065201, China;
3. Southwest Petroleum University, Chengdu 610500, China

Received:2015-04-14 Revised:2015-12-04 Online:2016-06-20 Published:2016-08-11

摘要/Abstract

摘要：

介绍了松原地区石油地震资料的主要特点和信息提取的基本方法。通过对松原地区不同界面的t0等值线资料和二维地震剖面的处理与分析，综合平面与剖面的构造解释成果，查明了研究区主要断层的展布特征，为该地区主要断层活动性的初判提供了依据。利用深、浅地震资料叠加的方式，自下而上结合钻孔探测，厘定了目标断层的活动时代。

关键词: 活断层探测, 隐伏断层, 地震勘探, 松原

Abstract:

Located in the south of the Songliao Basin, Songyuan City is one of the few high seismic intensity regions (Ⅷ degree regions) in Northeast China, where a magnitude 6(3/4) earthquake took place in 1119. Since 2013, many earthquakes of magnitude above 5 have occurred in Chaganhua Town which is 100km southwest of Songyuan. The faults in the study region are almost all in a concealed state and covered by the Quaternary system, therefore, geophysical investigation, drilling and other similar means are required to determine their distribution, occurrence, nature and active period. Many seismic explorations in this region aiming at surveying the oil bearing structure have been conducted by Jilin Oilfield, which provides detailed seismic exploration information for preliminary detection of active faults. In this paper, the main features of petroleum-related seismic data and major methods for extracting tectonic information are presented; on the plain, the trace information of the main structure is extracted by the t0 interface contour map which allows direct reflection of rises and falls of stratal interfaces and the tectonic characteristics of the corresponding geologic period; on the section, the "extending upwards" characteristics of faults are captured by tracing and marking geological phenomena in the reflective standard layer, faults, the surface of unconformity and so on. Under the comprehensive use of the "3D" structure in the interpretation of the results, accurate spatial distribution information of main faults are obtained in the study region, this offers an effective approach to preliminary judgment of the activity of faults in this region. Meanwhile, the active age of the target faults is identified by superimposing the deep and shallow seismic data and integrating with the drilling detection.

Key words: active fault surveying, buried fault, seismic exploration, Songyuan City

中图分类号:

P315.2

尉洋, 沈军, 于晓辉, 吴晓歌. 石油地震资料在隐伏活断层探测中的应用——以松原活断层探测为例[J]. 地震地质, 2016, 38(2): 423-433.

YU Yang, SHEN Jun, YU Xiao-hui, WU Xiao-ge. THE APPLICATION OF PETROLEUM SEISMIC DATA TO THE BURIED ACTIVE FAULT DETECTION——A CASE STUDY OF ACTIVE FAULTS SURVEYING IN SONGYUAN CITY[J]. SEISMOLOGY AND GEOLOGY, 2016, 38(2): 423-433.

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石油地震资料在隐伏活断层探测中的应用——以松原活断层探测为例

THE APPLICATION OF PETROLEUM SEISMIC DATA TO THE BURIED ACTIVE FAULT DETECTION——A CASE STUDY OF ACTIVE FAULTS SURVEYING IN SONGYUAN CITY

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