惠州某区薄储层反演技术研究及应用
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摘要
针对惠州某区滚动勘探阶段钻井较少、薄储层预测难度大的问题,采用基于正则化算子的叠前同步反演技术解决钻井偏态分布难以确定砂体横向边界的问题,从而确定更加合理的变程、变差函数等统计学参数,并作为地质统计学反演的关键参数输入;通过开展地质统计学反演,提高薄储层的纵向薄储层识别厚度问题。反演结果表明:预测设计井X3处储层发育,新钻井X3资料验证了此结果;目标区存在A2UP、A2LOW、A2共3套砂体,且互不连通。
In view of fewer drilling wells and the difficulty of thin reservoir prediction in the rolling exploration stage in an area in Huizhou,the pre-stack simultaneous inversion technique based on the regularization operator was adopted to solve the problems of the difficulty of determining the lateral boundary of sand using the skewed distribution of drilling. More reasonable variation and variation functions were determined and treated as the key parameter input for geo-statistics inversion. The predicted thickness of the vertical thin reservoir was improved by geo-statistical inversion. The inversion results show that the reservoir in the design well X3 will develop,and data from the new drilling well X3 verify the result. There are three sets of sand bodies in the target zone: A2UP,A2LOW,and A2,which are mutually unconnected.
In view of fewer drilling wells and the difficulty of thin reservoir prediction in the rolling exploration stage in an area in Huizhou,the pre-stack simultaneous inversion technique based on the regularization operator was adopted to solve the problems of the difficulty of determining the lateral boundary of sand using the skewed distribution of drilling. More reasonable variation and variation functions were determined and treated as the key parameter input for geo-statistics inversion. The predicted thickness of the vertical thin reservoir was improved by geo-statistical inversion. The inversion results show that the reservoir in the design well X3 will develop,and data from the new drilling well X3 verify the result. There are three sets of sand bodies in the target zone: A2UP,A2LOW,and A2,which are mutually unconnected.
引文
[1]王镜惠.地质统计学反演在油藏建模中应用的研究[D].西安:西安石油大学,2012.
[2]杨锴,艾迪飞,耿建华.测井、井间地震与地面地震数据联合约束下的地质统计学随机建模方法研究[J].地球物理学报,2012,55(8):2695-2704.(YANG Kai,AI Difei,GENG Jianhua.A new geostatistical inversion and reservoir modeling technique constrained by well-log,crosshole and surface seismic data[J].Chinese Journal of Geophysics,2012,55(8):2695-2704.(in Chinese))
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[11]ZHANG Hongbing,SHANG Zuoping,YANG Changchun.Estimation of regular parameters for the impedance inversion[J].Chinese Journal of Geophysics,2005,48(1):181-188.
[12]ZHANG Hongbing,SHANG Zuoping,YANG Changchun.A non-linear regularized constrained impedance inversion[J].Geophysical Prospecting,2007,55(6):819-833.
[13]ZHANGHongbing,SHANG Zuoping,YANG Changchun.Adaptive reconstruction method of impedance model with absolute and relative constraints[J].Journal of Applied Geophysics,2009,67(2):114-124.
[14]ZHANG Hongbing,YANG Changchun.A impedance constrained inversion method controlling by regular parameters[J].Chinese Journal of Geophysics,2003,46(6):827-834.
[15]ZHANGJiashu,LYU Songfeng,LIU Yang.AVO inversion based on generalized extreme value distribution with adaptive parameter estimation[J].Journal of Applied Geophysics,2013,98(11):11-20.
[16]ZHANGZhigang,HUANG Lianjie,LIN Youzuo.Double-difference elastic-waveform inversion with prior information for time-lapse monitoring[J].Geophysics,2013,78(6):R259-R273.
[17]YAN Zhe,GU Hanming.Non-linear prestack seismic inversion with global optimization using an edge-preserving smoothing filter[J].Geophysical Prospecting,2013,61(4):747-760.
[2]杨锴,艾迪飞,耿建华.测井、井间地震与地面地震数据联合约束下的地质统计学随机建模方法研究[J].地球物理学报,2012,55(8):2695-2704.(YANG Kai,AI Difei,GENG Jianhua.A new geostatistical inversion and reservoir modeling technique constrained by well-log,crosshole and surface seismic data[J].Chinese Journal of Geophysics,2012,55(8):2695-2704.(in Chinese))
[3]李绪宣,胡光义,范廷恩,等.基于地震驱动的海上油气田储层地质建模方法[J].中国海上油气,2011,23(3):143-147.(LI Xuxuan,HU Guangyi,FAN Ting'en,et al.A method of geological reservoir modeling based on seismic drive for offshore fields[J].China Offshore Oil and Gas,2011,23(3):143-147.(in Chinese)
[4]刘振峰.致密砂岩油气藏储层建模技术方案及其应用[J].地球物理学进展,2014,29(2):815-823.(LIU Zhenfeng.Reservoir modeling program for tight oil&gas sands and its applications[J].Progress in Geophysics,2014,29(2):815-823.(in Chinese))
[5]刘焕荣.实验变异函数及其理论模型的计算与拟合研究[D].云南:昆明理工大学,2014.
[6]王海虹.地质统计学在石油勘探开发中的应用[D].黑龙江:东北石油大学,2013.
[7]姜文龙,杨锴.岩石物理参数高分辨率地质统计学反演[J].石油物探,2012,51(6):638-648.(JIANG Wenlong,YANG Kai.Petrophysical parameters of high resolution geostatistical inversion[J].Journal of petroleum exploration,2012,51(6):638-648.(in Chinese))
[8]韩东,胡向阳,邬兴威,等.基于地质统计学反演的缝洞储集体物性定量评价[J].地球物理学进展,2016,31(2):655-661.(HAN Dong,HU Xiangyang,WU Xingwei,et al.Quantitative evaluation for porosity of the fracture-cavity reservoir based on geostatistical inversion[J].Progress in Geophysics,2016,31(2):655-661.(in Chinese))
[9]梁立锋,但志伟,陈剑锋,等.叠前密度反演的误差对含气饱和度估算的影响[J].工程地球物理学报,2011,8(3):257-260.(LIANG Lifeng,DAN Zhiwei,CHEN Jianfeng,et al.The Influence of prestack density inversion error on gas saturation estimate[J].Journal of engineering geophysics,2011,8(3):257-260.(in Chinese))
[10]ARTURO C,CARLOS T V,TIM F.Sensitivity analysis of data-related factors controlling AVA simultaneous inversion of partially stacked seismic amplitude data:Application to deepwater hydrocarbon reservoirs in the central Gulf of Mexico[J].Geophysics,2007,72(1):C19-C29.
[11]ZHANG Hongbing,SHANG Zuoping,YANG Changchun.Estimation of regular parameters for the impedance inversion[J].Chinese Journal of Geophysics,2005,48(1):181-188.
[12]ZHANG Hongbing,SHANG Zuoping,YANG Changchun.A non-linear regularized constrained impedance inversion[J].Geophysical Prospecting,2007,55(6):819-833.
[13]ZHANGHongbing,SHANG Zuoping,YANG Changchun.Adaptive reconstruction method of impedance model with absolute and relative constraints[J].Journal of Applied Geophysics,2009,67(2):114-124.
[14]ZHANG Hongbing,YANG Changchun.A impedance constrained inversion method controlling by regular parameters[J].Chinese Journal of Geophysics,2003,46(6):827-834.
[15]ZHANGJiashu,LYU Songfeng,LIU Yang.AVO inversion based on generalized extreme value distribution with adaptive parameter estimation[J].Journal of Applied Geophysics,2013,98(11):11-20.
[16]ZHANGZhigang,HUANG Lianjie,LIN Youzuo.Double-difference elastic-waveform inversion with prior information for time-lapse monitoring[J].Geophysics,2013,78(6):R259-R273.
[17]YAN Zhe,GU Hanming.Non-linear prestack seismic inversion with global optimization using an edge-preserving smoothing filter[J].Geophysical Prospecting,2013,61(4):747-760.