针对冀东南堡4号中浅层河道砂体识别的提高分辨率处理  

High resolution seismic data processing aimed at channel sand body ricognition in middle-shallow layers,Jidong Nanpu 4 structure

作　　者：孙明 赵宝银 陈伟超 于金星 林培炬 高芬 SUN Ming;ZHAO Baoyin;CHEN Weichao;YU Jinxing;LIN Peiju;GAO Fen(CNPC Jidong Petroleum,Tangshan 063004,China;Sino Geophysical Co.,Ltd,Beijing 100101,China)

机构地区：[1]冀东油田公司,唐山063004 [2]潜能恒信能源技术股份有限公司,北京100101

出　　处：《物探化探计算技术》2018年第4期417-424,共8页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国石油冀东油田内部项目(2013A03-06)

摘　　要：南堡4号构造中浅层纵向发育多套含油层系、含油井段长,但是单油层厚度薄,平面上油层分布零散,地震剖面上分辨率低,不利于开展河道砂体预测工作。根据实际地震资料特点,以原始资料野外采集频宽为依据,采用了VSP井驱动Q补偿、高保真分频去噪、分频剩余静校正、井约束反褶积以及优势频带反褶积等技术手段,在高保真保幅的基础上逐步拓宽频带提高信噪比及分辨率,最终提高了井震吻合程度,达到了河道砂体预测要求。Middle shallow Layers in Nanpu 4 structure developed muhiple sets of oil-- bearing strata vertically, which are characterized by long oil containing segments in oil wells, thin thickness of single oil layer and scattered distribution laterally as well. The relatively low resolution seismic data is not adequate for effective prediction of channel sand body reservoirs. Based on characteristics of true seismic data, restricted by the acquisition frequency bandwidth, such targeted techniques as VSP well driven Q compensation, high fidelity frequency division denoising, frequency division residual static correction, well con- strained deeonvolution and dominant frequency band constrained deeonvolution are applied to the seismic data processing proce- dure, in order to widen frequency band, improve signal to noise ratio and enhance seismic resolution step by step, on the premise of ensuring seismic data＇s high fidelity which can be verified by well seismic coincidence. As a result, the final seismic data can well meet geological demand of effective prediction of channel sand body reservoirs.

关 键 词：河道砂体 Q补偿 井约束反褶积 保真保幅 

分 类 号：P631.4[天文地球—地质矿产勘探]