Abstract：A series of vibroseis shooting tests with normal,low-frequency and heavy-duty vibrators were recently conducted in Tuonamu-Shenggen area and Longeni-Esima-Maqu area,Qiangtang Basin.These tests include different parameters such broad band,high density,high fold,and wide line,the following optimal parameters are obtained.A)For normal vibrator,3 vibrators/fleet,1 sweep,sweep frequency 6-84 Hz,sweep length 18s,drive level 70%; B)For low-frequency vibrators,2 vibrators/fleet,1 sweep,sweep frequency 1.5-84Hz,sweep length 16s,drive level:60%; C)For heavy-duty vibrators,2 vibrators/fleet,1 sweep,sweep frequency 6-84 Hz,sweep length 16s,drive level 70%; D)High-density and high-fold vibroseis acquisition can obtain high quality seismic data,even better than dynamite seismic.Very good quality seismic data are acquired in Qiangtang Basin for the first time after these tests.
Zhao Zhengzhang,Li Yongtie,Ye Hefei et al Eds. Petroleum Geology of Qiangtang Basin in Qinghai-Xizang Plateau. Science Publishing House,Beijing,2001,174-339.
Lu Zhanwu,Gao Rui,Kuang Chaoyang et al. Acquisition technique test of 2-D seismic survey in Qiangtang basin of Tibet. Earth Science Frontiers,2006,13(5):382-390.
Lu Zhanwu,Gao Rui,Xue Aimin et al. New seismic reflection profiles and basement structure in the Qiangtang basin,Northern Tibet. Geology in China,2006,33(2):286-290.
Li Zhongxiong,Liao Jianhe,Cheng Mingdao et al. Acquisition technique test of seismic survey in Tuolamu-Shenggen region,Qiangtang basin. GPP,2013,52(5):502-511.
Li Zhongxiong,Du Baiwei,Wang Zhengjiang et al. Petroleum geologic characteristics of the Middle Jurassic strata in Qiangtang basin of Northern Xizang area. Acta Petrolei Sinica,2008,29(6):797-803.
Ku Xinbo,Wu Qingbo,Jiang Guanli. Potential distribution of natural gas hydrate in the permafrost regions of QingHai-Tibet plateau. Natural Gas Geoscience,18(4):588-592.
Nan Zhuotong,Li Shuxun,Cheng Guodong. Future change prediction of permafrost regions for a time from 50a to 100a in Qinghai-Tibet plateau. Science in China. Ser D,Earth Sciences,2004,34(6):528-534.
Di Zhixin,Ding Wei,Wang Zengming et al. Practice and understanding of seismic acquisition technology in complicated foothill area. GPP,2012,51(6):548-561.
Liu Yimou,Liang Xianghao,Huang Youhui et al. Wide-line seismic acquisition technique and its application in complex mountainous area of Kuqa depression. GPP,2008,47(4):418-424.
Luo Renze,Liang Liming,Wu Xiguang et al. The theory of wide line array and its application in loess plateau seismic survey. Natural Gas Industry,2009,29(3):54-57.
Zhang Xiaobin,Luo Weidong,Tang Tao et al. Seismic acquisition technique in complex mountainous area in west China. Natural Gas Industry,2007,27(S A):76-78.
[13]
云美厚. 对镇巴复杂山地地震采集的思考. 石油地球物理勘探,2006,41(5):504-513.
Yun Meihou. Thought about seismic acquisition in complex mountains of Zhenba area. OGP,2006,41(5):504-513.
Wang Dong,He Zhenhua,Sun Jianku et al. Application of broadened line plus long distance geophone array seismic technique in the complex mountainous area of north Karshgar. GPP,2010,49(6):606-610.
Zhang Huili,Zhang Lin,Liu Ping. Comparative study on explosive source test and vibroseis test in coverage area of thick gravel layer. Chinese Journal of Engineering Geophysics,2016,13(2):221-226.
