Coal Seam Scouring Zone Analysis Based On Seismic Attributes

The seismic signal contains the underground rock, the physical characteristics of the reservoir and the circumstance of the geographic structure, it has a profound and realistic significance to dig effectively the information of the lithology and reservoir physical properties hidden in the seismic data. The seismic attribute reflects the full nature of the seismic signals, and also reflects the physical characteristics of the reservoir from different angles. With the continuous development of the seismic attributes extraction technology, the type of the seismic attribute is also increasing constantly. In the light of the complicated relationship between the seismic attribute and the object predicted, the seismic attribute of the different work area and the different reservoirs which is sensitive (or the most effective, the most representative) to the predicted object is not completely identical. In this paper, based on the geological characteristics in the exploration area, we designed an appropriate field data collection program, and obtained higher quality seismic records. Furthermore, the remained relatively amplitude and high-resolution processing of raw data was processed by France CGG Geocluster2100seismic data processing system, we also used the borehole data in the region to analyze the synthetic seismogram, extracted properties along the layer, optimized the seismic attribute (the root-mean-square amplitude properties, instantaneous frequency attributes, arc length property) which is sensitive to the boundary of the erosion zones.The work of the seismic inversion techniques convert seismic profiles to impedance section seismic data by full using of seismic data, log data and geological interpretation,which combines log data with high vertical resolution with seismic profiles which have good lateral continuity of the characteristics, not only to facilitate the seismic data and the logging data comparison, but also acquire the distribution of physical parameters in space, then to guide the exploration and development of the coal seam.The purpose of this paper that study washed range and distribution pattern of the Jurassic2#study area is to guide the high efficient mining of coal seam.Based on analyzing comprehensively the study area’s geological featuresN ell logs and seismic data, this paper applies the Mutual restraint of the seismic explain’s new technologies-seismic attribute’s analysis and seismic inversion techniques to make the explanation’s results accurate and reliable.Based on Jason software. Taking into the characteristics of in account work area range, the small drilling number and the uneven distribution, this paper selects sparse spike inversion method to invert the study area processed’s seismic data in; selecting the appropriate slice of the ledge layer extract attribute and combing the work area seam thickness trends forecast based on the earthquake’s property analysis, speculates the work area washed with ancient river evolutionary process. This study aims at the lack of seismic exploration work in the past,anlyze geological targets of this study by using the seismic attributes and inversion methods, which effectively overcomes the solvability problem of the seismic data.