地震速度岩性解释系统的应用——以准噶尔盆地东部阜东斜坡带为例  

Prediction of Seismic Velocity or Lithology in Fudong Slope Belt in Eastern Junggar Basin

作　　者：金博[1] 刘震[1] 邬长武[1] 党虎强[1] 韩军[2] 关强[2] 

机构地区：[1]石油大学石油天然气成藏机理教育部重点实验室,北京102249 [2]中国石油新疆油田分公司准东勘探项目经理部,新疆阜康831500

出　　处：《新疆石油地质》2004年第1期47-49,共3页Xinjiang Petroleum Geology

摘　　要：在分析和解释准噶尔盆地东部阜东斜坡带速度谱资料的基础上,结合根据钻井、测井资料建立的本区两种精细砂泥岩压实模型,利用地震速度岩性解释系统(VLIS)进行了层速度转换、谱算层速度校正及砂岩指数计算误差平滑和校正,并分别计算了中上侏罗统石树沟群的层速度和砂岩指数。通过对研究区地震相和沉积相特征的分析认为,本区砂岩指数高值区与前积、充填相等对应,表明本区物源主要来自东北方向,这就为阜东斜坡带有利储集相带的预测提供了依据。The velocity spectrum data from Fudong slope belt in eastern Junggar ba si n are analyzed and interpreted,the compacting models of two types of detailed sandy mudstone using drilling and well log data are developed.Based on these,t he conversion of interval velocity,correction of spectrum-based interval veloc ity and correction and smoothing of sand exponential-calculated error are condu cted using seismic velocity lithological interpretation system(VLIS),obtainin g the estimated interval velocity and sand exponent of Mid-Upper Jurassic Shis hugou group,respectively.Through seismic interval velocity analysis and lithol ogy prediction,integrated with characteristics of seismic facies and sedimentar y facies,the high sand exponent areas are corresponding to foreset and filled facies,which reflect that the source in this area is mainly from deposits to ea st-north direction,and provide quantitative basis for predicting the favorable reservoir facies belts in Fudong slope belt.

关 键 词：地震速度 层速度 速度谱 岩性解释 准噶尔盆地 

分 类 号：P631.44[天文地球—地质矿产勘探]