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煤田三维地震勘探在一个井田内一般多采用分期分块的勘探方式,然后将分散的解释成果拼接成整个区域的构造图。这种方式往往对连接部分的构造形态把握不准。连片处理技术则是将相邻的多个地震资料处理成一个数据体,统一解释。经连片处理后的资料大大避免了边界效应,加大了资料的可利用量,提高了区域构造解释的精度。三维地震资料连片处理的关键技术是解决各区块间观测系统的整合,以及原始资料在振幅、相位及波形上的一致性等问题。在梁宝寺一号井4块勘探区共计14.55km2的三维地震资料的连片处理中,首先统一坐标系内,重新划分面元,并且采取了全区统一校正、振幅均衡及子波形一致性整形处理等技术,以确保各个采区地震信号的运动学特征和动力学特征的一致性。经连片处理后其叠加剖面在拼接处的振幅、频率、相位特征一致性较好,无拼接痕迹,取得了较好的处理效果。
Coalfield 3D seismic prospecting generally uses staged and sub-block exploration methods in a well field, and then stitches scattered interpretation results into tectonic maps of the entire area. This approach is often not sure about the configuration of the connection part. The contiguous processing technique is to process the adjacent seismic data into a single data body and explain it in a unified way. The data after the contiguous processing greatly avoids the boundary effect, increases the amount of data available, and improves the accuracy of regional tectonic interpretation. The key technology of 3D seismic data contiguous processing is to solve the problems such as the integration of observing systems among different blocks and the consistency of original data in amplitude, phase and waveform. In the contiguous processing of a total of 14.55km2 of 3D seismic data in 4 exploration areas of Liangbaosi No. 1 well, the surface elements are first unified within the coordinate system, and then the uniform correction, amplitude equalization and sub-waveform consistency Plastic processing technology to ensure that all mining seismic signals kinematic and dynamic characteristics of the consistency. After being processed by contiguous slices, the superimposed sections of them have good consistency of amplitude, frequency and phase characteristics at the splicing place, and no stitching marks are obtained, and the better treatment effect is achieved.