煤炭高密度三维地震勘探一体化技术的应用

针对以往煤炭三维地震勘探中普遍存在的地震数据采集、地震资料处理和地震资料解释三个环节衔接不紧,相互脱节,影响勘探精度的问题,提出煤炭高密度三维地震勘探一体化技术方法,即在采集方面采用了单点激发、单点数字检波器小道距接收技术等;在资料处理方面采用小面元处理技术、重构去噪技术、分时剩余静校正技术、叠前时间偏移技术等;在资料解释方面采用正演模型技术、三维可视化技术、综合地震属性技术等。这些技术相互依托,相互渗透形成了煤炭高密度三维地震勘探一体化技术,该技术提高了煤炭地震勘探区的总体勘探精度。实践表明,一体化技术在HNDJ-GQ勘探区的应用中取得了良好的地质效果,在现如今煤炭砂泥岩互层复杂地区值得应用与推广。

Application of Integration Technology to High Density 3D Seismic Coal Exploration

Aiming at the universal problem of the separation of three sections-acquisition,processing and interpretation of seismic data in the past,which eventually has a bad effect on the accuracy of exploration,we propose a new integrated technical method of the high density 3D seismic coal exploration,namely,to use single point excitation,short receiving technology of single point digital geophone in data acquisition;to adopt the technology of small surface element processing,reconstruction denoising,time variant residual static correction,prestack time migration in data processing;to adopt the technology of forward model,3D visualization and comprehensive study of seismic attributes in data interpretation.These methods rely on each other to form an integrated technical approach of the high density 3D seismic coal exploration,which can improve the overall exploration accuracy in the area of seismic coal exploration.The practice in HNDJ-GQ prospecting area proves that the application of the integrated technology can achieve better geological result and that it is worth popularizing in the complex area of coal sand-shale interbred.