全局性地震切片的拾取及其应用  

Pick Up and Application of the Global Seismic Slice

作　　者：李俞锋 蒲仁海[2] 贾学成[3] 刘彩芹 王飞 郭瑞川[2] 樊笑微 李斌 Li Yufeng;Pu Renhai;Jia Xuecheng;Liu Caiqina;Wang Fei;Guo Ruichuan;Fan Xiaowei;Li Bin(School of Environment and Resource, Southwest University of Science and Technology, Mianyang Sichuan 621010, China;State Key Laboratory for Continental Dynamic, Northwest University, Xi＇an 710069, China;Research Institute of BGP INC. , CNPC, Zhuozhou Hebei 072751, China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]西北大学大陆动力学国家重点实验室,西安710069 [3]中国石油东方地球物理勘探有限责任公司研究院,河北涿州072751

出　　处：《地质科技情报》2018年第1期212-217,共6页Geological Science and Technology Information

基　　金：国家科技重大专项"南海北部深水区大型生物礁滩分布与成藏条件分析"(2011ZX05025-006-02);国家自然科学基金重大项目(41390451)

摘　　要：传统地震切片技术(时间切片、层切片、地层切片、真地层切片)在构造分析、地震沉积、油气检测等方面已得到了广泛的应用;但在复杂地质情况下往往会出现穿时现象,同时对于人工解释地震切片,存在耗时耗力且地震解释精度低的缺陷。针对目前传统地震切片技术的缺陷与不足,介绍了一种全新的在优化模型基础上拾取全局性地震切片的方法。先根据地震数据创建规则网格,再利用规则网格中采样点处的波形相似性和距离建立链结,并赋予其链结全局位置值,最后通过成本函数最小化(即调整链结结构)优化模型,并在其基础上拾取全局性地震切片。应用该方法建立了复杂地质情况(丘形反射体、断层、海底扇)的模型并拾取其全局性地震切片,同时结合地震地质特征分析了海底扇的构造变化和砂体展布特征,取得了较好的效果。Conventional seismic slice techniques（time slice,horizontal slice,stratal slice,true stratal slice）are widely applied in the interpretation of structure,seismic sedimentology and hydrocarbon detecting.However in these seismic slices the time-crossing was sometimes developed in complicated geology conditions and manual interpretation became a labour-intensive and time-consuming process,which contributes to the lower interpretation accuracy.To resolve these drawbacks,this paper proposes the innovatory global seismic slice technique based on an optimization model to pick up the global seismic slice.Fistly,on the basis of seismic data we created the regular grid and then computed seismic links by the distance and similarity of a couple of neighbour traces and then computed the global position of links.Lastly we optimized the original model by the minimum of cost function and picked up the global seismic slice.With this technique we can create the model of stratigraphic characteristics and pick up global seismic slice for complicated geological bodies such as mound seismic reflection,fault zone and submarine fan.Furthermore,combining geological and seismic reflection characteristics of the submarine fan,we study structural changes and sandstone distribution of submarine fan and achieve the excellent results in the research.

关 键 词：地震切片 等时性 全局性地震切片 最小化 成本函数 模型 

分 类 号：P631.4[天文地球—地质矿产勘探]