基于多点扩散的地震层位全局追踪方法  

Global Tracking Method of Seismic Horizon Based on Multipoint Diffusion

作　　者：彭成[1] PENG Cheng(Petroleum Exploration and Production Research Institute,Sinopec,Beijing 100083,China)

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083

出　　处：《科学技术与工程》2023年第8期3190-3199,共10页Science Technology and Engineering

基　　金：国家页岩油重大专项(2017ZX05049-001-007);中科院A类战略性先导科技专项(XDAXX010405)。

摘　　要：为同时追踪所有地震层位并处理层间关系,使层位在整体上贴合地震数据,提出了基于走向长线段扩散连接的层位全局自动追踪方法。按照不同剖面方向跨多个地震道追踪趋势形成局部层位走向,结合已有层位调整后,将局部层位走向连接形成层位,达到局部区域走向的贴合。从多个位置起始将走向线段扩散连接,并通过平滑处理深度分歧和层间关系,形成全局层位。进一步基于地震数据相似性随机调整走向线段以整体上贴合地震数据。结果表明:所提方法识别层位趋势更为准确,减少了误差累积和深度分歧的影响,整体调整后更贴近真实地震数据走向,为地震解释初始全局层位的建立提供了技术支持。In order to track all seismic horizons at the same time and process the relationship between horizons,so that the horizons can fit the seismic data as a whole,a global automatic horizon tracking method based on the diffusion connection of strike long line segments was proposed.Trace the trend across multiple seismic channels in different profile directions to form local horizon trend.After adjusting the existing horizon,connect the local horizon trend to form horizon,to achieve the alignment of local regional trend.The strike line segments were diffused and connected from multiple locations,and the global horizon was formed by smoothing the depth divergence and interlayer relations.Further,based on the similarity of seismic data,the strike line segment was randomly adjusted to fit the seismic data.The results show that the proposed method is more accurate in identifying horizon trend,reduces the influence of error accumulation and depth divergence,and is closer to the real seismic data trend after overall adjustment,providing technical support for the establishment of initial global horizon for seismic interpretation.

关 键 词：地震层位 全局追踪 走向线段 扩散连接 层位自动追踪 地震数据预处理 

分 类 号：P631[天文地球—地质矿产勘探]