地震反演技术在三塘湖盆地油气勘探中的应用与效果分析  

Application of seismic inversion in oil & gas exploration and its effect analysis in Santanghu basin

作　　者：刘俊田 姜书林 李在光[2] 闫立纲 覃新平 刘媛萍[3] 

机构地区：[1]中国石油吐哈油田分公司勘探开发研究院,新疆哈密839009 [2]中国石油勘探开发研究院西北分院,甘肃兰州730000 [3]长江大学地球科学学院,湖北荆州434023

出　　处：《勘探地球物理进展》2009年第3期211-215,共5页Progress in Exploration Geophysics

摘　　要：目前,地震反演已成为储层横向预测和岩性油气藏勘探不可或缺的技术手段。其将横向上密集的地震数据与纵向上高分辨率的测井数据相结合,用测井资料丰富的高频信息和完整的低频成分,补充地震资料有限带宽的不足,用已知的地质信息和测井数据为约束条件,获得高分辨率的地层波阻抗资料,由此进一步计算出岩性、电性数据,精细地描述储层的平面展布、深度、厚度和物性的变化规律。通过对三塘湖盆地马朗凹陷开展精细储层反演,描述和论证了中生界侏罗系西山窑组(J2x)大型构造岩性复合油气藏及上石炭统卡拉岗组(C2k)火山岩风化壳油气藏,在盆地的井位论证、油藏评价和储量计算中取得了较好的应用效果。Seismic inversion has become an indispensable technique for lateral reservoir prediction and lithologic hydrocarbon reservoir exploration.It takes the advantages of horizontally dense seismic data and vertically high resolution log data,and makes full use of the high frequency and intact low frequency contents in log data to compensate for the limited band of seismic data to obtain the high resolution wave impedance data under the constraints of geology.One then can further calculate litological and electrical parameters and characterize the distribution of reservoir and its variability of depth,thickness,and petrophysics.This paper discussed the reservoir inversion in Malang depression,Santanghu basin.We characterized the large scale composite structural and lithological reservoir of the Mesozoic Xishanyao Formation(J2x)and the volcanic weathering crust reservoir of the Carboniferous Kalagang Formation(C2k).Satisfactory results have been achieved.

关 键 词：岩性油气藏 波阻抗反演 马朗凹陷 三塘湖盆地 

分 类 号：P631.4[天文地球—地质矿产勘探]