摘要
金湖凹陷三河北地区E_(1)f_(2)^(3-3)储层为滩坝类型砂体,平面上团块状分布,纵向上砂泥薄互层。由于砂体横向变化快,在钻井密度较低地区利用钻井资料进行储层预测存在一定的难度。从地震反射特征入手,在精细井震标定的基础上,利用振幅属性和频谱衰减等方法对研究区内的滩坝砂体进行了有效的预测,总结出储层振幅特征与砂体厚度的明显线性关系,以及含油储层具有明显的高频衰减特征。
The E_(1)f_(2)^(3-3)reservoir in the north of Sanhe area in Jinhu Sag is a beach-bar type sandbody,which is distributed in clumps on the plane,and thin interbeds of sand and mud in the vertical direction.Due to the rapid lateral changes of sandbodies,it is difficult to use well data to predict reservoirs in areas with low drilling density.Starting from characteristics of seismic reflection,based on fine seismic calibration,using methods such as amplitude attributes and spectrum attenuation,the beach bar sandbodies in the study area were effectively predicted.And then it was concluded that there is an obvious linear relationship between reservoir amplitude characteristics and sand body thickness,and oil-bearing reservoirs have obvious high-frequency attenuation characteristics.
作者
骆璞
LUO Pu(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)
出处
《复杂油气藏》
2021年第2期36-39,46,共5页
Complex Hydrocarbon Reservoirs
基金
中国石化重大科技攻关课题“苏北盆地阜宁组岩性油藏成藏条件与目标评价”(P20060-5)。
关键词
薄互层储层
地震反射特征
频谱衰减
高频衰减
金湖凹陷
thin interbed reservoir
seismic reflection characteristics
frequency spectrum attenuation
high-frequency attenuation
Jinhu Sag
