地质科技情报2018，Vol.37Issue(1)：252-257,6.DOI:10.19509/j.cnki.dzkq.2018.0135
煤系地层地震储层预测技术研究和应用:以鄂尔多斯盆地临兴气田太2段为例
Coal Measures Stratigraphic Reservoir Seismic Prediction Technology Applied in Tai2 Segment in Linxing Gas Field of Ordos Basin
摘要
Abstract
Linxing Gasfield,located in the eastern Ordos Basin,has a bright prospect in reservoir exploration and development on Tai2 Segment.Taiyuan Formation is characterized by coal-bearing strata controlled by sedimentary facies.The seismic reflection of the coal shows low-frequency,continuous and high-amplitude to shields effective signal of sandstone disturbing reservoir prediction because of the different impedances between the coal and surrounding rocks.Conventional impedance inversion method and seismic attributes are hard to forecast gas reservoir in this area because of superimposed p-wave impedance of sandstone and mudstone.This article determines the influence of coal seams through the seismic forward modeling,removes the influence of coal seams using wavelet decomposition reconstruction technology,and then,builds the target curve using frequency division inversion technique to complete the reservoir predic tion and optimize the drilling targets.Well L-103 yields 15.2 meters of gas-bearing formation and reaches the absolute open flow of gas production test 15.1 × 104 m3/d.It is proved that the reservoir prediction technology of coal measure strata is applicable to this area and has certain reference and promotion value.It also has great significance to the natural gas exploration in eastern Ordos Basin.关键词
临兴气田/煤系地层/子波分解与重构/分频反演/煤系地层储层预测技术Key words
Linxing Gasfield/coal measure strata/wavelet decomposition and reconstruction/frequency-divided inversion/reservoir prediction technique of coal measure strata分类
天文与地球科学引用本文复制引用
齐宇,梁建设,柳迎红,陈思路,喻梓靓,蒋锐..煤系地层地震储层预测技术研究和应用:以鄂尔多斯盆地临兴气田太2段为例[J].地质科技情报,2018,37(1):252-257,6.基金项目
中海石油(中国)有限公司综合科研项目(YXKY-2017-ZY-10) （中国）
