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Research on Energy Radiation Characteristics of an Airgun Source Excited in Land Reservoir
DONG Mingrong1,2, FU Liyun1,3, XING Chao4, YANG Shaodong5, YANG Jun6, LI Xiaobin6
1.Key Laboratory of Petroleum Resource Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;2.Earthquake Agency of Chuxiong Prefecture, Yunnan Province, Chuxiong 675000, China;3.China University of Petroleum(East China), School of Geosciences, Qingdao 266580, Shandong, China;4.750 Test Range, China Shipbuilding Industry Company Limited, Kunming 650051, China;5.Department of Numerical Control Application Technology, Chuxiong Technician College, Chuxiong 675000, Yunnan, China;6.Western Yunnan Earthquake Prediction Study Area, China Earthquake Administration, Dali 671000, Yunnan, China
摘要:
The energy radiation process of an airgun seismic source in land reservoir is studied based on the underwater wavelet data collected in the airgun excitation experiments in Binchuan, Yunnan, China. The empirical formula for calculating the bubble pulsation period and the maximum radius of the underwater airgun seismic source is obtained. The results show that: ① The energy radiation efficiency is higher vertically than horizontally. ② The vertical bubble energy radiation efficiency increases with the increase of the air supply pressure. ③ The vertical energy radiation efficiency of the airgun seismic source is 9.4% when the air supply pressure is 15MPa. ④ The higher the air supply pressure, the further the propagating distance of the superposition-enhanced pressure wave of an airgun source.
关键词:  Land reservoir  Airgun seismic source  Shock wave  Bubble  Energy  Radiation Process
DOI:10.19743/j.cnki.0891-4176.201901002
分类号:
基金项目:This project was jointly funded by the Science for Earthquake Resilience (XH17031SX) of China Earthquake Administration,and Academician Chen Yong Workstation in Yunnan Province (2014IC007).
Research on Energy Radiation Characteristics of an Airgun Source Excited in Land Reservoir
DONG Mingrong1,2, FU Liyun1,3, XING Chao4, YANG Shaodong5, YANG Jun6, LI Xiaobin6
1.Key Laboratory of Petroleum Resource Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;2.Earthquake Agency of Chuxiong Prefecture, Yunnan Province, Chuxiong 675000, China;3.China University of Petroleum(East China), School of Geosciences, Qingdao 266580, Shandong, China;4.750 Test Range, China Shipbuilding Industry Company Limited, Kunming 650051, China;5.Department of Numerical Control Application Technology, Chuxiong Technician College, Chuxiong 675000, Yunnan, China;6.Western Yunnan Earthquake Prediction Study Area, China Earthquake Administration, Dali 671000, Yunnan, China
Abstract:
The energy radiation process of an airgun seismic source in land reservoir is studied based on the underwater wavelet data collected in the airgun excitation experiments in Binchuan, Yunnan, China. The empirical formula for calculating the bubble pulsation period and the maximum radius of the underwater airgun seismic source is obtained. The results show that: ① The energy radiation efficiency is higher vertically than horizontally. ② The vertical bubble energy radiation efficiency increases with the increase of the air supply pressure. ③ The vertical energy radiation efficiency of the airgun seismic source is 9.4% when the air supply pressure is 15MPa. ④ The higher the air supply pressure, the further the propagating distance of the superposition-enhanced pressure wave of an airgun source.
Key words:  Land reservoir  Airgun seismic source  Shock wave  Bubble  Energy  Radiation Process