波阻抗反演在埕海斜坡区二叠系储层研究中的应用  

Application of Wave Impedance Inversion Research of Permian Reservoir in the Slope Area of Chenghai

作　　者：蔡刚[1] 姚军[1] 张兆辉[1] 刘娟娟[1] 邸俊[1] 杨子玉[2] 杨帆[2] 

机构地区：[1]中国石油勘探开发研究院西北分院,甘肃兰州730020 [2]中国石油大港油田分公司勘探开发研究院,天津300280

出　　处：《天然气地球科学》2013年第6期1238-1245,共8页Natural Gas Geoscience

基　　金：中国石油天然气股份有限公司"歧口富油气凹陷大油气田勘探及综合配套技术研究"项目(编号2008-030504)资助

摘　　要：大港油田埕海斜坡区二叠系地质条件复杂,储层厚薄不一,物性变化大,要搞清该区储层特征及其分布规律,仅使用单一的常规反演方法存在困难。因此,在对重新处理的埕海潜山单片三维叠前时间偏移资料精细解释后,针对二叠系在测井约束反演的基础上进行采样点数据统计法及多种地震属性提取技术的联合应用,完成二叠系3个砂组的储层预测,结果使储层的可辨识性与反演预测结果的可靠性得到明显的提高。波阻抗反演作为储层预测的一种核心技术,将其结合采样点数据统计法并综合多种属性资料分析预测砂体分布及厚度的方法,在埕海斜坡区隐蔽油藏的勘探中发挥了重要作用,并获得显著的地质效果。The geological conditions are complex in the Permian slope area of Chenghai in Dagang Oilfield,and the reservoir thickness varies in physical properties.It is difficult to find out the reservoir characteristics and distribution rules by using a single conventional inversion method.Therefore,we integrate the technologies of the sampling sites data statistics and a variety of seismic attributes on the basis of logging constrained inversion for the Permian strata after the fine interpretation of the re-processing singularity 3D pre-stack time migration data of buried hill in Chenghai.After we complete reservoir prediction of the three Permian sand groups,the reliability of reservoir identification and inverse predictions are significantly improved.As a core technology of reservoir prediction,wave impedance inversion which predicts the distribution and thickness of the sand body by combining sampling sites data statistics and multiple attribute data plays an important role and gets significant geological effects in the exploration of the subtle reservoir in the slope area of Chenghai.

关 键 词：埕海斜坡区 地震反演 地震属性 层位标定 波阻抗 测井约束反演 

分 类 号：TE132.14[石油与天然气工程—油气勘探]