时移地震平均能量属性差异与储层速度变化的关系
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摘要
基于3层楔状模型和3层层状模型提取了时移地震平均能量属性差异,得出了时移地震属性(平均能量)差异与储层速度变化之间的关系,即平均能量差异的正、负是由储层地震波速度减小和增大引起的。正的平均能量差异对应储层速度的减小,负的平均能量差异对应储层速度的增大;差异的大小与储层厚度不存在正比关系,调谐厚度的薄层有时比厚层引起的差异要大。提取了渤海SZ36-1油田某层平均能量差异,差异反映的地震波速度变化与开采动态认识一致,说明利用以上规律能够认识地下油藏的动态变化,指导油藏开采。
The difference in average energy attribute of time-lapse was extracted based on three-layer wedge model and three-layer strati- fied model.The relationship between the difference of time-lapse average energy attribute and the change of seismic-wave velocity was obtained.The positive or negative difference of average energy is resulted from the decrease or increase of seismic-wave velocity: the positive difference of average energy responds to the decrease of seismic-wave velocity in reservoir,and the negative difference of average energy responds to the increase of seismic-wave velocity in reservoir.The value of difference is not in direct proportional to the thickness of reservoir and sometimes the thin layer with tuning thickness may cause bigger difference than the thick layer does. The difference in average energy of Bohai SZ36-1 oilfield was ex- tracted, with the change of seismic-wave velocity refleeted by the difference being in agreement with the development information. which means that.by using the abovementioned rule.we can rec- ognize the dynamic variation of the subsurface reservoirs and guide the further development.
The difference in average energy attribute of time-lapse was extracted based on three-layer wedge model and three-layer strati- fied model.The relationship between the difference of time-lapse average energy attribute and the change of seismic-wave velocity was obtained.The positive or negative difference of average energy is resulted from the decrease or increase of seismic-wave velocity: the positive difference of average energy responds to the decrease of seismic-wave velocity in reservoir,and the negative difference of average energy responds to the increase of seismic-wave velocity in reservoir.The value of difference is not in direct proportional to the thickness of reservoir and sometimes the thin layer with tuning thickness may cause bigger difference than the thick layer does. The difference in average energy of Bohai SZ36-1 oilfield was ex- tracted, with the change of seismic-wave velocity refleeted by the difference being in agreement with the development information. which means that.by using the abovementioned rule.we can rec- ognize the dynamic variation of the subsurface reservoirs and guide the further development.
引文
1 Catherine Lewis著．用于油藏监测的地震属性：应用正演模拟的可行性研究[J]．张翠兰译．石油物探译丛．1997，20(6)：16～26
2甘利灯．四维地震技术及其在水驱油藏监测中的应用[D]．北京：中国地质大学，2003
3 Wang Zhijing(Zee)著．地震岩石物理学基本准则[J]．王炳章译．石油物探译丛，2001，24(4)：1～120
4马中高，伍向阳，王中海．有效压力对岩石纵横波速度的影响[J]．勘探地球物理进展，2006．29(3)：183～186
5易维启，李清仁．张国才，等．大庆TN油田时移地震研究与剩余油分布规律预测[J]．勘探地球物理进展，2003，26(1)：61～65
6云美厚，管志宁．储层条件下砂岩纵波和横波速度的理论计算[J]．石油物探，2002，41(3)：289～298
7甘利灯．水驱四维地震技术可行性研究及盲区[J]．勘探地球物理进展．2003，26(1)：24～29
8鲍祥生，尹成，符志国，等．油田注水过程中油藏物性变化规律研究[J]．西南石油学院学报．2004，26(2)：18～21
2甘利灯．四维地震技术及其在水驱油藏监测中的应用[D]．北京：中国地质大学，2003
3 Wang Zhijing(Zee)著．地震岩石物理学基本准则[J]．王炳章译．石油物探译丛，2001，24(4)：1～120
4马中高，伍向阳，王中海．有效压力对岩石纵横波速度的影响[J]．勘探地球物理进展，2006．29(3)：183～186
5易维启，李清仁．张国才，等．大庆TN油田时移地震研究与剩余油分布规律预测[J]．勘探地球物理进展，2003，26(1)：61～65
6云美厚，管志宁．储层条件下砂岩纵波和横波速度的理论计算[J]．石油物探，2002，41(3)：289～298
7甘利灯．水驱四维地震技术可行性研究及盲区[J]．勘探地球物理进展．2003，26(1)：24～29
8鲍祥生，尹成，符志国，等．油田注水过程中油藏物性变化规律研究[J]．西南石油学院学报．2004，26(2)：18～21
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