利用断层模型约束反演技术进行储层预测
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摘要
本文通过井震结合,建立了喇嘛甸油田北北二区块的构造模型,具体作法为:①利用井分层数据产生深度域顶部层面,应用地震构造解释产生时间域构造层面,通过合成记录建立油层组级别的速度场,并将深度域构造层面数据进行转换得到时间域数据;②以地震构造层面为趋势约束,最终得到时间域的各油层组构造层面;③对断层与断层、断层与层位进行交切,通过准确定义断层关系以及断层与层位之间的关系,使断层上、下盘地层的过渡符合实际地质情况。在构造模型的基础上,利用断层模型约束进行地质统计学反演,经与测井解释结果对比,砂体预测可信度明显提高。利用该预测结果落实了井网控制程度较低区域的断层附近砂体分布,对断层附近水平井设计提供了依据。
Using logging data and seismic data we build a structural model of the second block in the north LMD field in this study.The concrete steps are as follows: ①The top horizon in depth domain is built by geological divided layers from well data;the structural horizons in time domain is built using seismic interpreted structures;pay zone set-level velocity field is established by synthetic seismograms;and finally structural horizon data in the time domain are converted from that of depth domain.②With the restriction of seismic structural horizons,structural horizons in time domain of all pay zone sets are obtained.③The relationships among faults and horizons,and their distribution have been defined accurately by fault interpretation,so the transition of upper wall and foot wall formations accords with actual geologic situation.On the basis of structural model,the geostatistical inversion constrained by faults model is conducted.Comparing with the logging data interpretation,the reliability of sand bodies prediction with this inversion improves significantly.Using reservoir prediction results by this method the sand body distribution near the faults in sparse well spacing area has been confirmed,which guides the design of horizontal wells.
Using logging data and seismic data we build a structural model of the second block in the north LMD field in this study.The concrete steps are as follows: ①The top horizon in depth domain is built by geological divided layers from well data;the structural horizons in time domain is built using seismic interpreted structures;pay zone set-level velocity field is established by synthetic seismograms;and finally structural horizon data in the time domain are converted from that of depth domain.②With the restriction of seismic structural horizons,structural horizons in time domain of all pay zone sets are obtained.③The relationships among faults and horizons,and their distribution have been defined accurately by fault interpretation,so the transition of upper wall and foot wall formations accords with actual geologic situation.On the basis of structural model,the geostatistical inversion constrained by faults model is conducted.Comparing with the logging data interpretation,the reliability of sand bodies prediction with this inversion improves significantly.Using reservoir prediction results by this method the sand body distribution near the faults in sparse well spacing area has been confirmed,which guides the design of horizontal wells.
引文
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[9]杨懋新,刘金平,王允清等.井震联合地质建模技术在扶杨油层油藏描述中的应用.石油地球物理勘探,2010,45(增刊1):130～133Yang Maoxin,Liu Jinping,Wang Yunqing et al.Ap-plication of well-seismic joint geology modeling tech-nique in reservoir characterization in Fuyang reser-voir.OGP,2010,45(S1):130～133
[10]边树涛,狄帮让,董艳蕾等.地质统计反演在东濮凹陷白庙气田沙三段储层预测中的应用.石油地球物理勘探,2010,45(3):398～405Bian Shutao,Di Bangrang,Dong Yanlei et al.Applica-tion of geostatistical inversion in reservoir predictionin the third member of Shahejie Formation,BaimiaoGas-field,Dongpu Depression.OGP,2010,45(3):398～405
[11]孙思敏,彭仕宓.地质统计学反演及其在吉林扶余油田储层预测中的应用.物探与化探,2007,31(1):51～53Sun Simin,Peng Shimi.Geostatistical inversion meth-od and its application to reservoir predicition of Fuyuoilfield in Jilin province.Geophysical and GeochemicalExploration,2007,31(1):51～53
[2]Haa S A,Dubrule O G.Geostatistical inversion-Asequential method for stochastic reservoir modelingconstrained by seismic data.First Break,1994,13(12):25～30
[3]张永刚.地震波阻抗反演技术的现状和发展.石油物探,2004,41(4):385～390Zhang Yonggang.The present and future of wave imped-ance inversion technique.GPP,2004,41(4):385～390
[4]吕铁良,王永刚,谢万学等.稀疏脉冲反演技术在井间地震反演中的应用.石油物探,2007,46(1):58～63LüTieliang,Wang Yonggang,Xie Wanxue et al.Ap-plication of sparse pulse inversion in crosswell seismicdata.GPP,2007,46(1):58～63
[5]宋维琪,赵万金,冯磊等.地震高分辨率反演和地质模拟联合预测薄储层.石油学报,2005,26(1):50～54Song Weiqi,Zhao Wanjin,Feng Lei et al.Prognoses ofthin reservoir by combining seismic high-resolutioninversion technology and geological simulation.ActaPetrolei Sinica,2005,26(1):50～54
[6]王志君,黄军斌.利用相干技术和三维可视化技术识别微小断层和砂体.石油地球物理勘探,2001,36(3):378～381Wang Zhijun and Huang Junbin.Identification of mi-cro-fault and sand body by using coherence techniqueand 3-D visualization.OGP,2001,36(3):378～381
[7]张志伟,王春生,林雅平等.地震相控非线性随机反演在阿姆河盆地A区块碳酸盐岩储层预测中的应用.石油地球物理勘探,2011,46(2):304～310Zhang Zhiwei,Wang Chunsheng,Lin Yaping et al.Applications of facies-controlled nonlinear random in-version for carbonate reservoir prediction in Block Aof Amu-darya Basin.OGP,2011,46(2):304～310
[8]贺维胜,夏吉庄,杨宏伟等.三维高分辨率模型的建立及应用.石油学报,2007,28(1):58～60He Weisheng,Xia Jizhuang,Yang Hongwei et al.De-velopment of three-dimension high-resolution model.Acta Petrolei Sinica,2007,28(1):58～60
[9]杨懋新,刘金平,王允清等.井震联合地质建模技术在扶杨油层油藏描述中的应用.石油地球物理勘探,2010,45(增刊1):130～133Yang Maoxin,Liu Jinping,Wang Yunqing et al.Ap-plication of well-seismic joint geology modeling tech-nique in reservoir characterization in Fuyang reser-voir.OGP,2010,45(S1):130～133
[10]边树涛,狄帮让,董艳蕾等.地质统计反演在东濮凹陷白庙气田沙三段储层预测中的应用.石油地球物理勘探,2010,45(3):398～405Bian Shutao,Di Bangrang,Dong Yanlei et al.Applica-tion of geostatistical inversion in reservoir predictionin the third member of Shahejie Formation,BaimiaoGas-field,Dongpu Depression.OGP,2010,45(3):398～405
[11]孙思敏,彭仕宓.地质统计学反演及其在吉林扶余油田储层预测中的应用.物探与化探,2007,31(1):51～53Sun Simin,Peng Shimi.Geostatistical inversion meth-od and its application to reservoir predicition of Fuyuoilfield in Jilin province.Geophysical and GeochemicalExploration,2007,31(1):51～53
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