广义S变换多频解释技术及其在薄层评价中的应用  

Generalized S transform multi-frequency interpretation technique and its application in thin reservoir evaluation

作　　者：夏亚良 魏小东[1] 叶玉峰 陈鑫 王红梅[1] 李艳静[1] 马英哲 严晓欢 XIA Ya-Liang;WEI Xiao-Dong;YE Yu-Feng;CHEN Xin;WANG Hong-Mei;LI Yan-Jing;MA Ying-Zhe;YAN Xiao-Huan(Geophysical Research Institute of BGP,CNPC,Zhuozhou 072751,China;PetroChina International Iraq FZE Iraq Branch,Beijing 100032,China)

机构地区：[1]中国石油集团东方地球物理勘探有限责任公司研究院,河北涿州072751 [2]中油国际(伊拉克)哈法亚公司,北京100032

出　　处：《物探与化探》2019年第1期168-175,共8页Geophysical and Geochemical Exploration

基　　金：中国石油天然气股份有限公司"十二五"重大专项(2011E-2501)

摘　　要：为了利用时频转换后地震资料完成高速围岩屏蔽薄层定量评价,应用广义S变换对目标地震开展解释性处理,落实薄层时频域地震可识别程度。结合实钻砂体发育数据、频谱分析、薄层时频特征等,开展时频转换数据优选,提取频率梯度属性定性分析目标区沉积储层平面展布特征。构建实钻数据与频率梯度数学关系,完成薄层定量评价。对中东地区实际资料处理解释表明,基于广义S变换的多频解释技术对于高速围岩屏蔽的薄层评价具有较好的应用效果,提高了储层预测精度,为利用地震资料开展储层定量评价提供了一套技术思路,具有广阔的应用前景。In order to quantitatively evaluate thin reservoir of high speed surrounding rock shielding by seismic data after time frequency conversion,the generalized S transform is applied to processing for target seismic,and then ascertain the time and frequency seismic recognition extent for thin reservoir.Combined with basic sand parameter,frequency spectral analysis,and time frequency characteristics of thin reservoir,carry out single frequency seismic optimization,and extract frequency gradient attribute to qualitatively analysis the plane distribution of sedimentary reservoir.Construct the mathematical relationship between drilling data and frequency gradient to finish quantitatively evaluation for thin reservoir.The practical example in Middle East shows that the multi-frequency interpretation techniques based on generalized S transform has a good application result for thin reservoir of high speed surrounding rock shielding,and the reservoir prediction accuracy was improved.It provides a set of technical ideas for quantitative reservoir evaluation by seismic data and has broad application prospects.

关 键 词：薄层 高速围岩 广义S变换 时频特征 多频解释 频率梯度 中东地区 

分 类 号：P6310.4[天文地球—地质矿产勘探]