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| 青藏高原羌塘盆地二维地震数据采集方法试验研究 | |
| 引用本文： | 卢占武,高锐,匡朝阳,贺日政,李鹏武,朱军.青藏高原羌塘盆地二维地震数据采集方法试验研究[J].地学前缘,2006,13(5):382-390. |
| 作者姓名： | 卢占武 高锐 匡朝阳 贺日政 李鹏武 朱军 |
| 作者单位： | 1. 中国地质科学院,地质研究所,岩石圈中心,北京,100037 2. 中国地质科学院,地质研究所,岩石圈中心,北京,100037;中国石化集团,华东石油局第六物探大队,江苏,南京,210007 3. 中国石化集团,华东石油局第六物探大队,江苏,南京,210007 |
| 基金项目： | 国土资源部青藏高原油气资源战略选区项目;国家自然科学基金 |
| 摘 要： | 羌塘盆地地表地质条件复杂,地震资料信噪比低,取得高质量的地震剖面存在很大困难。为了改善这一问题,我们通过50km长的二维反射地震试验剖面,初步探索出一套适用于羌塘地区地震资料采集的方法技术。研究对比表明,合理加大接收排列,采用有效深井、药量,添加适当大炮与适当延长记录长度等措施能够在该地区获得较丰富的地下反射信息。从试验处理的剖面看,该施工方式是合理的、有效的。 |
| 关 键 词： | 羌塘盆地 地震勘探 采集方法 试验 |
| 文章编号： | 1005-2321（2006）05-0382-09 |
| 收稿时间： | 2005-09-15 |
| 修稿时间： | 2006-02-24 |
Acquisition technique test of 2-D seismic survey in Qiangtang basin of Tibet |
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| LU Zhan-wu,GAO Rui,KUANG Zhao-yang,HE Ri-zheng,LI Peng-wu,ZHU Jun.Acquisition technique test of 2-D seismic survey in Qiangtang basin of Tibet[J].Earth Science Frontiers,2006,13(5):382-390. | |
| Authors: | LU Zhan-wu GAO Rui KUANG Zhao-yang HE Ri-zheng LI Peng-wu ZHU Jun |
| Institution: | 1. Lithosphere Research Centre, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China 2. No. 6 Geophysical Prospecting Team, Huadong Petroleum Bureau, China Petroleum and Chemical Corporation, Nanjing 210007,China |
| Abstract: | It is difficult to acquire a high quality seismic section for the Qiangtang basin of Tibet because of complex seismic-geological conditions and low signal-noise ratio in this area.In order to determine acquisition methods suitable for the features of this basin,we conducted a test along seismic reflection profile with 50 km long.The seismic profile is a common-depth-point(CDP)stacked section acquired with explosive source using I/O Image 24-places seismograph,480 receiver-groups,30 m receiver-group spacing,2 millisecond samplings.The 16-kilogram explosives were generally placed in a single well,as deep as 18 m,space is 150 m,and 60-fold.To surely increase energy of reflection wave,we had also taken a large explosive weight of 100 kilograms,combined wells at the depth of 18 m.PROMAX data process system was used to process seismic data.The preliminary seismic reflection time profiles reveal fine reflection images and offer a great deal of helpful information for studying the structure of the Qiangtang basin.The result shows that lengthening the array,deploying valid well depth and explosive quantity,adding reasonable shot with a large quantity of explosives and prolonging record time are necessary to acquire abundant reflection in this area.The test processing profiles show that this method is both feasible and effective. |
| Keywords: | Qiangtang basin seismic exploration acquisition method test |
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