AG技术在XC气田T3x气藏的应用研究
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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.
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.
引文
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[2]杨振武,李显贵,王安志.新场、东泰、合兴场三维地震相干及应用[J].石油地球物理勘探,2000,35(3):339.
[3]许多,李显贵,刘殊,等.合兴场地震资料吸收油气预测研究[J].物探化探计算技术,2000,22(1):56.
[4]李显贵,文雪康,王紫娟,等.洛带气田地震多参数综合油气预测研究[J].石油地球物理勘探,2000,35(6):779.
[5]李显贵.非线性突变在石龙场油气预测中的应用[J].石油物探,2003,42(3):306.
[6]王斌,李显贵,文雪康.动态时窗多参数油气预测技术在柏桠的应用[J].物探化探计算技术,2000,22(2):146.
[7]唐建明.川西坳陷致密非均质气藏储层空间展布刻划[J].天然气工业,2002,22(4):19.
[8]唐云,李显贵,邱华,等,宽方位地震资料采集观测系统设计初探[J].石油物探,2003,42(2):233.
[9]王西文.地震资料处理和解释中的小波分析方法[M].北京:石油工业出版社,2004.
[10]李显贵,甘其刚.川西坳陷致密非均质储层地震识别技术[J].特种油气藏,2004,11(5):32.
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