摘要
XC气田T3x气藏属于深层陆相致密碎屑岩气藏,具有致密、低孔渗、薄层交互、多层叠置和强非均质性等特点。长期以来,勘探成功率低、效益差。近年来,以高精度地震资料为主线,多学科协同,深入研究含气地震响应特征,充分利用地震资料信息,取得了一系列油气勘探开发的重大突破。在此期间,形成了基于地震波小波变换的AG(吸收梯度:AbsorptionGrads)含气性检测方法技术,此项技术在XC气田T3x气藏取得了较好的应用效果。实践表明,XC气田T3x气藏含气砂岩储层具有低AG异常特征,应用这样的异常特征信息,可以较好地进行非均质致密砂岩储层的含气性检测。
T3x gas reservoirs in XC gas field is the deep land-facies tight rubbishy rock gas reservoirs with the characteristic of tight,low permeability,thin inter-bed,multi-layer nappe and high heterogeneity.There was a low ratio of succeeding in oil & gas prospecting and a poor benefit in the past.A series of grave breach had been got recently because of study on seismic data,multi-subject,seismic response to oil and gas,fully using seismic information.On the other hand,based on wavelet translating of seismic waves,a kind of seismic technology for gas bearing detection,AG(Absorption Grads)technology had been formed to detect gas in T3x gas reservoirs in XC gas field.It had been shown that the gas bearing sandstone in T3x gas reservoirs in XC gas field is with the character of low AG.This information is very useful to detect gas in heterogeneity tight sand reservoirs.
出处
《物探化探计算技术》
CAS
CSCD
2007年第1期39-43,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家"十五"科技攻关项目(2004616BA-05-02)
关键词
致密
非均质
碎屑岩
地震资料
含气性检测
吸收梯度
tight
heterogeneity
rubbishy rock
seismic data
gas bearing detection
absorption grads
