罗家地区扇三角洲微相的伪波阻抗反演地震识别  

SEISMIC IDENTIFICATION OF MICRO-FACIES OF FAN-DELTA BASE ON PSEUDO-WAVE IMPEDANCE INVERSION IN LUOJIA AREA

作　　者：吴满[1,2] 路慎强[3] 杨风丽[2] 张猛[2,3] 

机构地区：[1]胜利油田地质科学研究院,山东东营257015 [2]同济大学海洋与地球科学学院,上海200092 [3]胜利油田物探研究院,山东东营257022

出　　处：《物探化探计算技术》2012年第3期320-325,240,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中石化先导科研项目(P09072)

摘　　要：位于济阳坳陷罗家地区的古近系沙河街组四段沉积了多期扇三角洲。钻井、岩心资料表明,有效储层多发育在扇三角洲前缘亚相的水下分流河道微相中。然而,由于储层内部结构复杂,横向变化快,以及地震资料分辨率的不足等原因,使得目前无法在常规波阻抗反演资料中对该区沉积相及储层进行精细的识别。因此,应用高密度地震资料并进行测井曲线重构伪波阻抗地震反演,可将沉积相的地震预测提高到可识别微相的精度,取得了令人满意的效果。Several sets of fan-delta develop in the forth member of shahejie formation,in Luojia area,Jiyang depression.It has been conformed by well and core data that the effective reservoirs usually consist in the micro-facies of subaqueous distributary channel in sub-facies of fan-dalta front.However,structural complexity and rapid lateral changes of reservoirs and low seismic resolution have been restricted the facies precise identification in conventional wave-impedance inversion seismic data.Therefore,high-density seismic data is used and the reconstructed-logs pseudo-wave impedance seismic inversion is adopted in this paper.These attempts increase the facies seismic identification accuracy to micro-facies,obtaining sound effects.

关 键 词：扇三角洲 微相识别 伪波阻抗反演 罗家地区 济阳坳陷 

分 类 号：TE122.23[石油与天然气工程—油气勘探]