【摘 要】
：
A sedimentary geological model is established in order to study the seismic reflection characteristics of channel sand bodies. Synthetic seismic shot gathers ar
【机 构】
：
CNPC Key Laboratory of Geophysical Exploration, China University of Petroleum, Beijing 102249, China
论文部分内容阅读
A sedimentary geological model is established in order to study the seismic reflection characteristics of channel sand bodies. Synthetic seismic shot gathers are simulated using the acoustic wave equation and then are prestack time migrated. On the imaged data,the reflection characteristics and instantaneous attributes are analyzed and log-constrained impedance inversion is tested. Because of wave field interference, the experimental results show that seismic events do not definitely correspond to the channel sand bodies and that seismic modes of occurrence do not represent the actual ones. The seismic events formed by wave interference may lead to errors and pitfalls in sand body interpretation. The corresponding relations between instantaneous seismic attributes and sedimentary sands are not well established. Log-constrained impedance inversion improves the resolution of channel sands. However, if the inverted resolution is forced to be too high, artifacts related to the initial model may occur.
其他文献
将奇异值分解方法(SVD)应用于昆明地区13 a臭氧总量逐月平均距平值与云南省地区32个测站逐月降水量距平场,探讨昆明月平均臭氧总量距平与云南地区月平均降水量距平场的关系.
运用Mexico草帽子波对南极臭氧总量月平均资料进行了子波分析,墨西哥草帽子波所揭示的不同尺度下的突变点均表现为过零点(零距平)的拐点.通过对南极O3总量的子波分析,不仅得
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
首次从豆科植物柳叶槐的根中分离得到6种成分,分别鉴定为胆甾醇、1-硬脂酸甘油酯、β-胡萝卜甙、硬脂酸、苦参碱、槐果碱.
研究了新试剂 2 - (H酸偶氮 ) - 4,5 -二硝基酚 (HADNP)与铝的显色反应 ,在pH5 .3的六次甲基四胺 -盐酸缓冲介质中 ,HADNP与Al3+生成 3比 1的紫色络合物 ,λmax=5 70nm ,ε =
对程海螺旋藻玻璃温室-半封闭跑道式循环培养池中的细菌进行研究,结果发现,细菌总数通常为104～107个/mL,并且随培养时间呈一定规律性波动;池子报废与细菌总数有一定关系,与藻
在NaOH存在下,无溶剂加热靛红酸酐和席夫碱,合成一系列2,3-二芳基-2,3-二氢喹唑啉-4(1H)-酮衍生物.该反应产率高,操作简单.反应中考察了不同席夫碱对反应的适用性,合成了16个
In this study, we present a practical technique of transforming cross-hole EM data into the inter-well resistivity distribution. The a priori information constr
After decades of research and development, Marine Controlled Source ElectroMagnetics (MCSEM) has come into the application phase for oil and gas exploration.How
In this paper, multi-scaled morphology is introduced into the digital processing domain for land seismic data. First, we describe the basic theory of multi-scal