震源炮与井炮联合施工提高地震资料一致性方法研究
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摘要
也门地区49区块采用震源炮与井炮联合施工,虽然该方法在操作上具有灵活性,但在处理过程中需要尽量消除不同激发类型引起的差别。2种激发类型的单炮由于激发条件和激发类型的不同导致其子波在能量、相位、频率等方面都存在很大差别。通过常相位校正、地表一致性能量校正、地表一致性反褶积和地表一致性剩余静校正"四步法",逐步提高地震资料的一致性,弥补了震源炮与井炮联合施工带来的弊端。
The combined operation with choosed vibrator and dynamite source was used in Block 49 of Yemen.Although this method was quite flexible in operation,the difference induced in its excitation should be avoided necessarily in the process.Due to differences in excitation condition and excitation type,it caused obvious divergence in energy,phase and frequency between wavelets of these two sources.Through the "four steps"of constant phase correction,surface consistent energy correction,surface consistent deconvolution and surface consistent residual static correction,the consistency of the seismic data has been gradually improved,and it avoids the malpractice induced in the operation of vibrator source combined with dynamite source.
引文
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