高精度随机反演方法及在苏里格气田的应用
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摘要
苏里格气田属于低孔、低渗、非均匀性极强的砂岩岩性气藏,具有有效储层厚度小、横向变化大等特点,常规的反演技术难以满足其储层预测要求。基于常规的地震反演方法与随机模拟理论,提出一种高精度的随机反演方法。该方法首先采用随机爬山反演方法计算波阻抗数据体,然后对研究区内的伽马曲线结合波阻抗的反演结果,使用序贯指示模拟技术进行伽马反演。在苏里格气田实际应用结果表明,该方法可以很好地压制地震反演的多解性,提高分辨率,能很好地识别薄层砂体、刻画出砂体的变化情况,预测结果与实际钻井资料对比吻合率较高。
Sulige gas field is belong to sandstone lithologic gas reservoir with low porosity,low permeability and strong heterogeneity,it has the characteristics of the effective reservoir is thin with strong lateral thickness variations,the conventional inversion technique can't meet the requirements for reservoir prediction in Sulige area. A high precision of stochastic inversion methods based on the stochastic simulation theory with seismic inversion technique was proposed. Firstly,wave impedance data was calculated by stochastic seismic inversion methods,then combining the study area gamma curve with wave impedance inversion results using sequential indicator simulation technology gamma inversion conditions. Practical application in Sulige gas field shows that this method improves the resolution of reservoir and suppressed multiple solution of seismic inversion,it could be a better identification to thin sandstone,and could characterize the lateral variation of sand body better,the predict results agree well with real well-drilling data.
Sulige gas field is belong to sandstone lithologic gas reservoir with low porosity,low permeability and strong heterogeneity,it has the characteristics of the effective reservoir is thin with strong lateral thickness variations,the conventional inversion technique can't meet the requirements for reservoir prediction in Sulige area. A high precision of stochastic inversion methods based on the stochastic simulation theory with seismic inversion technique was proposed. Firstly,wave impedance data was calculated by stochastic seismic inversion methods,then combining the study area gamma curve with wave impedance inversion results using sequential indicator simulation technology gamma inversion conditions. Practical application in Sulige gas field shows that this method improves the resolution of reservoir and suppressed multiple solution of seismic inversion,it could be a better identification to thin sandstone,and could characterize the lateral variation of sand body better,the predict results agree well with real well-drilling data.
引文
1 王延光.储层地震反演方法以及应用中的关键问题与对策.石油物探,2002;41(3):299—303Wang Yanguang.Seismic reservoir inversion algorithm and the key problems and policies inits application.Geophysics Prospecting for Petroleum,2002;41(3):299—303
2 郭朝斌,杨小波,陈红岳,等.约束稀疏脉冲反演在储层预测中的应用.石油物探,2006;45(4):397—400Guo Chaobin,Yang Xiaobo,Chen Hongyue,et al.Constrained spare pulse inversion research innorth of Haitongji depression.Geophysics Prospecting for Petroleum,2006;45(4):397—400
3 张晓玲,钱运生.基于模型的测井约束反演方法及应用.勘探地球物理进展,2004;27(5):343—346Zhang Xiaoling,Qian Yunsheng.Model-based broad-band constrained inversion.Progress in Exploration Geophysics,2004;27(5):343—346
4 刘成斋,冉建斌,杨永生,等.稀疏脉冲和基于模型反演在王家岗沙四段砂岩油藏精细勘探中的应用.石油地球物理勘探,2002;37 (4):401—406Liu Chengzhai,Ran Jianbin,Yang Yongsheng,et al.Application of sparse pulse and inversion based on model in rollingexploration and development of sand body reservoir in Es4 member,Wangjiagang area.OGP,2002;37(4):401—406
5 夏红敏,黄旭日,王尚旭,等.区域特性约束下的油藏物性模拟.地球物理学进展,2005;20(3):769—774Xia Hongmin,Huang Xuri,Wang Shangxu,et al.The reservoir characterization at the regionalcharacter constrain.Progress in Geophysics,2005;20(3):769—774
6 Torres-Verdin C,Vctoria M.Trace-based and geostatistical inversion of 3-D seismic data for thin-sand delineation:an application in San Jorge Basin,Argentina.The Leading Edge,1999;18(9):1070—1077
7 Maikagambusm C,Torres-Verdin C.High-resolution geostatistical inversion of seismic data set acquired in a Gulf of Mexico gas reservoir.SEG 2002 Expanded Abstract Tulsa SEG:2002
8 张光荣,马波,张世荣.GSINV高精度反演技术在岩性油气藏储层预测中的应用.天然气工业,2007;27(S1):414—417Zhang Guangrong,Ma bo,Zhang Shirong.Application of precision inversion technique in prediction of lithologic gas reservoir.Natural Gas Industry,2007;27(S1):414—417
9 年静波,汤磊,刘喜武.地质统计分析在地震资料砂泥岩分布预测中的应用.石油物探,2004;43(3):278—282Nian Jingbo,Tang Lei,Liu Xiwu.Application of geostatistical analiysis in prediction of sand distribution from seismic data.Geophysical Prospecting for Retroleum,2004;43(3):278—282
10 张建林,吴胜和,武军昌,等.应用随机模拟方法预测岩性圈闭.石油勘探与开发,2003;30(3):114—116Zhang Jianlin,Wu Shenghe,Wu Junchang,et al.Prediction of lithologic traps using stochastic simulation.Petroleum Exploration and Development,2003;30(3):114—116
2 郭朝斌,杨小波,陈红岳,等.约束稀疏脉冲反演在储层预测中的应用.石油物探,2006;45(4):397—400Guo Chaobin,Yang Xiaobo,Chen Hongyue,et al.Constrained spare pulse inversion research innorth of Haitongji depression.Geophysics Prospecting for Petroleum,2006;45(4):397—400
3 张晓玲,钱运生.基于模型的测井约束反演方法及应用.勘探地球物理进展,2004;27(5):343—346Zhang Xiaoling,Qian Yunsheng.Model-based broad-band constrained inversion.Progress in Exploration Geophysics,2004;27(5):343—346
4 刘成斋,冉建斌,杨永生,等.稀疏脉冲和基于模型反演在王家岗沙四段砂岩油藏精细勘探中的应用.石油地球物理勘探,2002;37 (4):401—406Liu Chengzhai,Ran Jianbin,Yang Yongsheng,et al.Application of sparse pulse and inversion based on model in rollingexploration and development of sand body reservoir in Es4 member,Wangjiagang area.OGP,2002;37(4):401—406
5 夏红敏,黄旭日,王尚旭,等.区域特性约束下的油藏物性模拟.地球物理学进展,2005;20(3):769—774Xia Hongmin,Huang Xuri,Wang Shangxu,et al.The reservoir characterization at the regionalcharacter constrain.Progress in Geophysics,2005;20(3):769—774
6 Torres-Verdin C,Vctoria M.Trace-based and geostatistical inversion of 3-D seismic data for thin-sand delineation:an application in San Jorge Basin,Argentina.The Leading Edge,1999;18(9):1070—1077
7 Maikagambusm C,Torres-Verdin C.High-resolution geostatistical inversion of seismic data set acquired in a Gulf of Mexico gas reservoir.SEG 2002 Expanded Abstract Tulsa SEG:2002
8 张光荣,马波,张世荣.GSINV高精度反演技术在岩性油气藏储层预测中的应用.天然气工业,2007;27(S1):414—417Zhang Guangrong,Ma bo,Zhang Shirong.Application of precision inversion technique in prediction of lithologic gas reservoir.Natural Gas Industry,2007;27(S1):414—417
9 年静波,汤磊,刘喜武.地质统计分析在地震资料砂泥岩分布预测中的应用.石油物探,2004;43(3):278—282Nian Jingbo,Tang Lei,Liu Xiwu.Application of geostatistical analiysis in prediction of sand distribution from seismic data.Geophysical Prospecting for Retroleum,2004;43(3):278—282
10 张建林,吴胜和,武军昌,等.应用随机模拟方法预测岩性圈闭.石油勘探与开发,2003;30(3):114—116Zhang Jianlin,Wu Shenghe,Wu Junchang,et al.Prediction of lithologic traps using stochastic simulation.Petroleum Exploration and Development,2003;30(3):114—116
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