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Effects of tail-cone on geophone coupling system during seismic exploration
LIU Zhi-tian1,2,WU Xue-bing1,2,WANG Wen-zheng2,NING Jing2
(1. Research Institute of Petroleum Exploration and Development in China Petroleum Corporation,Beijing 100083,China ;2. Company of Geophysical Exploration and Development in Shengli Petroleum Management Bureau,Dongying 257100, Shandong Provinve, China)
Abstract:
The stacking effect model and coupling resonance nxxiel were presented. The two-freedom model which gives high description precision of coupling system was proposed. In order to exam the validation of the three models, a series of laboratory and field tests on the frequency response of the detector were performed by systematically changing the length, mass, component material of tail-cone as well as the ground condition. The analysis result didn't verify the coupling resonance model, but verified the stacking effect model. The two-freedom model was supported to some extent. The model and the experimental results can help to improve data acquiring precision during seismic exploration.
Key words:  oil exploration  geophone  tail-cone  coupling system  mathematical model