伪熵分析技术在储层预测中的应用
|
摘要
为了提高地震属性分析技术在储层预测中的有效性,提出了用于刻划地震波复杂程度的伪熵属性。通过对砂泥岩沉积模型的正演结果进行伪熵分析,证实伪熵随沉积结构复杂程度的增加而增大,表明伪熵属性具有指示沉积相带的作用,能够用于沉积相分布预测研究。将该技术应用于砂泥岩薄互层地区的砂岩储层预测,预测精度达到80%;应用于碳酸盐岩储层地区的裂缝型储层预测,其效果优于其他地震属性。
Pseudo-entropy attribute is presented which can describe the complex degree of seismic wave so as to improve the efficiency of the seismic attribute analysis technology in reservoir prediction. The pseudo - entropy analysis on the forward result of a sand - mudstone sedimentary model shows that pseudo - entropy increases as the sedimentary structure becomes more complex. The pseudo - entropy which is good indication for sedimentary facies - belts can be used for sedimentary facies distribution prediction. The prediction accuracy is about 80% when the pseudo - entropy analysis technology is used for sand reser-voir prediction in the area of thin - interbedded sand - mud-stones area. The application effect is better than other seismic attribute when the technology is used for fracured reservoir prediction in carbonate area. It proves that the pseudo - entropy a nalysis technology is a new and reliable method for reservoir prediction.
Pseudo-entropy attribute is presented which can describe the complex degree of seismic wave so as to improve the efficiency of the seismic attribute analysis technology in reservoir prediction. The pseudo - entropy analysis on the forward result of a sand - mudstone sedimentary model shows that pseudo - entropy increases as the sedimentary structure becomes more complex. The pseudo - entropy which is good indication for sedimentary facies - belts can be used for sedimentary facies distribution prediction. The prediction accuracy is about 80% when the pseudo - entropy analysis technology is used for sand reser-voir prediction in the area of thin - interbedded sand - mud-stones area. The application effect is better than other seismic attribute when the technology is used for fracured reservoir prediction in carbonate area. It proves that the pseudo - entropy a nalysis technology is a new and reliable method for reservoir prediction.
引文
[1]张荣忠,季玉新,崔凯,等.油储地球物理综合描述技术[J].勘探地球物理进展,2002,25(1):11-18.
[2]李国发,李观寿,张立勤.零相位改进型最小熵反褶积方法[J].石油地球物理勘探,1996,31(3):359-367.
[3]陈子林,周硕愚.蕴震系统的Kolmogorov熵及其可预报性[J].地壳形变与地震,1994,14(3):42-50.
[4]王晓华,黄真萍,王云专,等.频域约束条件下的最小熵反褶积[J].石油地球物理勘探,1997,32(增刊1):113-118.
[5]曹孟起,周兴元,王君.统计法同态反褶积[J].石油地球物理勘探,2003,38(增刊):1-9.
[6]肖焕钦,王宝言,陈宝宁,等.济阳坳陷陡坡带断裂控砂模式[J].油气地质与采收率,2002,9(5):20-22.
[7]孙锡年,刘渝,满燕.东营凹陷西部沙四段滩坝砂岩油气成藏条件[J].国外油田工程,2003,19(7):24-25.
[8]李丕龙,陈冬霞,庞雄奇.岩性油气藏成因机理研究现状及展望[J].油气地质与采收率,2002,9(5):1-3.
[9]曾萍,谭钦银,余谦,等.四川盆地东北部飞仙关组暴露浅滩、非暴露浅滩与储层关系[J].沉积与特提斯地质,2003,23(4):41-45.
[10]王亚琳.碳酸盐岩储层半定量评价技术[J].海洋石油,2002,22(4):43-49.
[11]赵铭海.常用叠后波阻抗反演技术评析[J].油气地质与采收率,2004,11(1):36-38.
[2]李国发,李观寿,张立勤.零相位改进型最小熵反褶积方法[J].石油地球物理勘探,1996,31(3):359-367.
[3]陈子林,周硕愚.蕴震系统的Kolmogorov熵及其可预报性[J].地壳形变与地震,1994,14(3):42-50.
[4]王晓华,黄真萍,王云专,等.频域约束条件下的最小熵反褶积[J].石油地球物理勘探,1997,32(增刊1):113-118.
[5]曹孟起,周兴元,王君.统计法同态反褶积[J].石油地球物理勘探,2003,38(增刊):1-9.
[6]肖焕钦,王宝言,陈宝宁,等.济阳坳陷陡坡带断裂控砂模式[J].油气地质与采收率,2002,9(5):20-22.
[7]孙锡年,刘渝,满燕.东营凹陷西部沙四段滩坝砂岩油气成藏条件[J].国外油田工程,2003,19(7):24-25.
[8]李丕龙,陈冬霞,庞雄奇.岩性油气藏成因机理研究现状及展望[J].油气地质与采收率,2002,9(5):1-3.
[9]曾萍,谭钦银,余谦,等.四川盆地东北部飞仙关组暴露浅滩、非暴露浅滩与储层关系[J].沉积与特提斯地质,2003,23(4):41-45.
[10]王亚琳.碳酸盐岩储层半定量评价技术[J].海洋石油,2002,22(4):43-49.
[11]赵铭海.常用叠后波阻抗反演技术评析[J].油气地质与采收率,2004,11(1):36-38.
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