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Research on Energy Radiation Characteristics of an Air-gun Source Excited in Land Reservoir
Dong Mingrong,Fu Liyun,Xing Chao,Yang Jun,Li Xiaobin
Author NameAffiliationE-mail
Dong Mingrong Southwest Forestry University dongmr@126.com 
Fu Liyun Key Laboratory of Petroleum Resource Research, Institute of Geology and Geophysics, Chinese Academy of Sciences  
Xing Chao 750 Test Range, China Shipbuilding Industry Corporation  
Yang Jun Western Yunnan Earthquake Prediction Study Area, China Earthquake Administration  
Li Xiaobin Western Yunnan Earthquake Prediction Study Area, China Earthquake Administration  
摘要:
The energy radiation process of an air-gun seismic source in land reservoir is studied based on the underwater wavelet data collected in the air-gun excitation experiments in Binchuan, Yunnan, China. The empirical formula for calculating the bubble pulsation period and the maximum radius of the underwater air-gun seismic source is obtained. The results show that: ①The energy radiation efficiency is higher vertically than horizontally.②The vertical bubble energy radiation efficiency increases with the increase of the air supply pressure.③The vertical energy radiation efficiency of the air-gun seismic source is 9.4% when the air supply pressure is 15MPa. ④The 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: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 Air-gun Source Excited in Land Reservoir
Dong Mingrong,Fu Liyun,Xing Chao,Yang Jun,Li Xiaobin
Abstract:
The energy radiation process of an air-gun seismic source in land reservoir is studied based on the underwater wavelet data collected in the air-gun excitation experiments in Binchuan, Yunnan, China. The empirical formula for calculating the bubble pulsation period and the maximum radius of the underwater air-gun seismic source is obtained. The results show that: ①The energy radiation efficiency is higher vertically than horizontally.②The vertical bubble energy radiation efficiency increases with the increase of the air supply pressure.③The vertical energy radiation efficiency of the air-gun seismic source is 9.4% when the air supply pressure is 15MPa. ④The 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