CAJ | 학술논문

由于现有静校正方法的应用存在一些局限,因此不能很好地解决复杂近地表结构地区的静校正问题.为此,研究了基于有限差分算子的波动方程基准面校正技术.简要介绍了该技术的基本原理,给出了实现该方法的具体流程,并将该方法应用于雷琼地区徐闻区块丘陵地区的地震数据处理.单炮记录的处理结果表明,该方法不仅可以改善反射波同相轴的连续性,还可以较好地压制噪声.对经过野外静校正、初至层析静校正和波动方程基准面校正处理的叠加剖面进行了对比分析,结果表明,波动方程基准面校正能够较好地消除复杂近地表结构的影响,提供更高精度的成像剖面.
유우현유정교정방법적응용존재일사국한,인차불능흔호지해결복잡근지표결구지구적정교정문제.위차,연구료기우유한차분산자적파동방정기준면교정기술.간요개소료해기술적기본원리,급출료실현해방법적구체류정,병장해방법응용우뢰경지구서문구괴구릉지구적지진수거처리.단포기록적처리결과표명,해방법불부가이개선반사파동상축적련속성,환가이교호지압제조성.대경과야외정교정、초지층석정교정화파동방정기준면교정처리적첩가부면진행료대비분석,결과표명,파동방정기준면교정능구교호지소제복잡근지표결구적영향,제공경고정도적성상부면.
For the statics problem in complex near-surface structure area,on account of the restriction of current statics method,the statics problem in such area cannot be well solved.Aiming at the problem,wave equation datum correction technique based on finite differential operator was studied.The principles of the method were briefly described,and the processing flow was presented.The method was applied to the actual seismic data processing for Xuwen hilly area,Leiqiong area.The processing results on single-shot record show that the method can not only improve the continuity of reflection events,but also better suppress the noise.By contrasting the stack profiles after field statics,first break tomographic statics and wave equation datum correction,the results show that wave equation datum correction can correctly remove the influence of complex near-surface structure and provide imaging profile with higher accuracy.