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| A study of the key seismic acquisition technology in the salt marsh area of Dulan,Qinhai province |
| Zhang Zhilin, Liu Bin, He Jingguo, Gao Lulu, Liu Lijuan, Sun Li |
| Shengli Branch, Geophysical Exploration Co., Ltd., Dongying 257100, China |
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Abstract It is very difficult to conduct seismic acquisition in Dulan,because it has a lot of salt ponds and salt lakes on the surface and extensive thick crystalline interbeds in the near-surface area. In this paper, the authors analyzed in detail the seismic response characteristics of the near-surface media in Dulan, with the emphasis placed on the characteristics of crystalline interbedded strata and beaded cavities by means of a model. Through the application of the actual seismic data, it is confirmed that the near-surface absorption decay law of the crystalline interbedded strata is correct. Moreover,the authors investigated the optimization techniques for the acquisition technology series by analyzing the stratification near the surface, and also optimized the depth design and the variable concept of the observation system. As a result, good results in the actual acquisition applications were acquired, and the problems concerning complex salt marsh area acquisition were successfully solved.
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Received: 01 September 2012
Published: 10 June 2014
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