济阳坳陷Y3地区基于地震资料的流体识别方法
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摘要
济阳坳陷Y3地区为复杂断块区,砂岩储层的厚度和物性变化快,油藏类型比较丰富。油田已经过多年开发,剩余油分布不明制约了后期开发水平的提高。为了弄清该地区的剩余油分布情况,在地震岩石物理分析的基础上,综合应用地震资料和测井资料提高地质框架模型的精度,利用叠前地震反演结果对储层的含流体性质进行描述。针对Y3地区小断层发育的特点,研究了多断块地震、地质、测井联合精细标定技术和井-震联合提高地质模型精度技术;针对油层的低密度、低泊松比特征,采用对流体敏感的泊松阻抗属性参数进行流体识别,提高了流体识别的精度。识别结果与采油动态情况吻合程度较好,新部署的钻探井获得了较高的产量。
Y3 area is a complex faulted block in Jiyang Depression.Many types of reservoirs exist in the area with fast changes of the thickness and physical properties of sandstone reservoir.After exploitation for years,the distribution of remaining oil is not clear,that restricts the improvement of development in later stage.Based on seismic petrophysical analysis,by integration of seismic data and logging data,the precision of geological frame model was improved, and the reservoir fluid properties was described by utilizing prestack seismic inversion.Aiming at the characteristics of small faults developing in the area,the research on multi-fault block fine calibration on seismic,geologic data and logging data as well as well-toseismic integration for improving the accuracy of the geologic model were studied.Aiming at low-density and low Poisson's ratio of the reservoir,the Poisson impedance attribute sensitive to fluid was adopted to identify fluid and improve fluid identification accuracy. The identification results match well with production performance, and newly drilled well gained high production.
Y3 area is a complex faulted block in Jiyang Depression.Many types of reservoirs exist in the area with fast changes of the thickness and physical properties of sandstone reservoir.After exploitation for years,the distribution of remaining oil is not clear,that restricts the improvement of development in later stage.Based on seismic petrophysical analysis,by integration of seismic data and logging data,the precision of geological frame model was improved, and the reservoir fluid properties was described by utilizing prestack seismic inversion.Aiming at the characteristics of small faults developing in the area,the research on multi-fault block fine calibration on seismic,geologic data and logging data as well as well-toseismic integration for improving the accuracy of the geologic model were studied.Aiming at low-density and low Poisson's ratio of the reservoir,the Poisson impedance attribute sensitive to fluid was adopted to identify fluid and improve fluid identification accuracy. The identification results match well with production performance, and newly drilled well gained high production.
引文
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[2]王玉梅.岩石物理横波速度曲线计算技术[J].油气地质与采收率,2006,13(4):58-61
[3]王玉梅,苗永康,孟宪军,等.利用经典理论模型研究流体性质对岩石地震波速及阻抗的影响[J].油气地质与采收率,2008,15(1):63-65
[4]Quakenbush M,Shang B,Tuttle C.Poisson impedance [J].The Leading Edge,2006,25(2):128-138
[5]凌云.测井与地震信息标定研究[J].石油地球物理勘探,2004,39(1):68-74
[6]杨占龙,沙雪梅.储层预测中层位-储层的精细标定方法[J].石油物探,2005,44(6):627-631
[7]邓宏文,王洪亮,李熙品.层序地层地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996, 17(3):177-184
[8]王洪亮,邓宏文.地层基准面原理在湖相储层预测中的应用[J].石油与天然气地质,1997,15(2):96-202
[9]夏洪瑞,周开明,黄桥.波阻抗反演中的一种建模方法[J].石油物探,2004,43(1):30-32
[10]陈建江,印兴耀.基于贝叶斯理论的AVO三参数波形反演[J].地球物理学报,2007,50(4):1251-1260
[11]孟宪军,慎国强,王玉梅,等.叠前AVA地震纵横波阻抗同步反演技术研究[J].石油物探,2004,43(增刊1):53-55
[12]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[J].石油物探,2006,45(4): 397-400
[13]裘亦楠.油气储层评价技术[M].北京:石油工业出版社,1994:6-20
[14]李爱山,印兴耀,张繁昌,等.叠前AVA多参数同步反演技术在含气储层预测中的应用[J].石油物探, 2007,46(1):64-68
[15]尚新民,石林光,李红梅,等.胜利油田YA地区三维地震资料AVO处理[J].石油物探,2001,40(3): 82-93
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