影响岩溶缝洞体地震反射特征的关键因素分析
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
岩溶缝洞体是目前塔里木盆地碳酸盐岩储层中最重要的钻探目标,对缝洞体反射特征的研究一直是地震勘探的重点,但早期研究往往只关注单一因素对地震反射特征的影响。本文基于声波方程数值模拟,全面探讨了缝洞体的位置、形态、物性、内部结构等多种因素对地震反射特征的影响;明确了缝洞体的反射振幅主要受其宽度、总孔隙度和内部结构等三方面因素的综合影响;认为应用现行技术很难将这些因素的影响区分开,直接研究缝洞体的容积是储层定量描述的现实途径。
The Karst fracture-cave body(FCB)is the most important drilling target in Tarim carbonates.The influence of the FCB on reflection characteristics merits great efforts of research.The early research efforts usually focused on a single factor influence.Using numerical simulation based on acoustic wave equation,we discuss in this article many influence factors including location,shape,porosity,inner structure,etc.It is confirmed that the main influence factors on reflection amplitude are FCB's width,total porosity,and inner structure.Therefore,it is believed that quantitative reservoir characterization and porosity volume calculation are more practical than separate estimations of the porosity and the bulk volume.
引文
[1]周新源,杨海军,韩剑发等.中国海相油气田勘探实例之十二——塔里木盆地轮南奥陶系油气田的勘探与发现.海相油气地质,2009,14(4):67-77.Zhou Xinyuan,Yang Haijun,Han Jianfa et al.Cases of discovery and exploration of marine fields in China(Part 12):Lunnan Ordovician oil-gas field in Tarim basin.Marine Origin Petroleum Geology,2009,14(4):67-77.
    [2]陈广坡.碳酸盐岩岩溶型储层地质模型及储层预测[博士学位论文].四川成都:成都理工大学,2009.Chen Guangpo.Geological Model and Prediction of Carbonate Karstic Reservoir[D].Chengdu University of Technology,Chengdu,Sichuan,2009.
    [3]叶勇,杨子兴,李佩等.碳酸盐岩溶洞数值模拟及地震识别.天然气工业,2007,27(3):43-45.Ye Yong,Yang Zixing,Li Pei et al.Numerical simulation and seismic recognition of carbonate Karst cave.Natural Gas Industry,2007,27(3):43-45.
    [4]姚姚.菲涅耳带与洞缝型油气藏地震波场.石油物探,2005,44(5):491-494.Yao Yao.Fresnel zone and seismic wave field in the fracture-vug reservoir.GPP,2005,44(5):491-494.
    [5]吴俊峰,姚姚,撒利明.碳酸盐岩特殊孔洞型构造地震响应特征分析.石油地球物理勘探,2007,42(2):180-185.Wu Junfeng,Yao Yao and Sa Liming.Analysis on seismic response of special cavernous structure of carbonate.OGP,2007,42(2):180-185.
    [6]李凡异,魏建新,狄帮让等.碳酸盐岩溶洞的“串珠”状地震反射特征形成机理研究.石油地球物理勘探,2012,47(3):385-391.Li Fanyi,Wei Jianxin,Di Bangrang et al.Analysis on seismic response of special cavernous structure of carbonate.OGP,2012,47(3):385-391.
    [7]黄成毅,邹胜章,潘文庆等.古潮湿环境下碳酸盐岩缝洞型油气藏结构模式——以塔里木盆地奥陶系为例.中国岩溶,2006,25(3):250-255.Huang Chengyi,Zou Shengzhang,Pan Wenqing et al.Structure pattern of rift-cavity oil-gas pool in carbonate rock under moist paleo-environment:a case study on the Ordovician in Tarim basin.Carsologica Sinica,2006,25(3):250-255.
    [8]Yang P,Liu Y L,Li H Y et al.Fractured-vuggy reservoir characterization of carbonate,Tarim Basin,Northwest China.73rd EAGE Conference and Exhibition,Vienna,Austria,2011.
    [9]Loucks R G.A review of coalesced,collapsed-paleocave systems and associate duprastratal deformation.Acta Carsologica,2007,36(1):121-132.
    [10]张永刚.地震波场数值模拟方法.石油物探,2003,42(2):143-148.Zhang Yonggang.On numerical simulations of seismic wavefield.GPP,2003,42(2):143-148.
    [11]Berenger J A.Perfectly matched layer for the absorption of electromagnetic waves.Journal of Computational Physics,1994,114(2):185-200.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心