【摘要】 叠前时间偏移是复杂构造成像最有效的方法之一,能适应纵横向速度变化较大的情况,适用于大倾角的偏移成像。笔者结合实例探讨叠前时间偏移技术在复杂构造区煤层地震资料处理中应注意的问题。结果表明:叠前时间偏移技术能够有效地提高复杂构造区煤层的成像效果,提高煤田地震资料的信噪比和分辨率。更多还原

【Abstract】 The pre-stack time migration technology is one of the effective means for imaging of complex structure.It can be adapted to the condition of relatively rapid longitudinal and transverse variation and is suitable for migration imaging with large dip angles.With examples,the authors discuss the problems which deserve attention in using the pre-stack time migration technology to conduct coalfield seismic data processing in the structurally-complex area.The results demonstrate that this technology can effectively improve imaging effect of coal seams in structurally-complicated areas and raise coalfield seismic data signal-to-noise ratio and resolution.更多还原