川西坳陷致密非均质气藏储层空间展布刻划
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摘要
四川盆地川西坳陷陆相致密碎屑岩气藏储层具有致密、低孔渗、薄层交互、多层叠置和强非均质性的特点。长期以来 ,勘探成功率低、效益差。近年来 ,以高精度三维地震资料为主 ,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进展。其间 ,储层空间展布刻划技术起到了十分关键的作用。文章从储层基本地质特点 ,含气砂体地震响应模式建立 ,储层展布预测 ,储层边缘检测及空间展布刻划等方面 ,结合川西地区致密非均质气藏勘探的实践经验详细介绍了实现储层空间展布刻划的系列技术。
It is well known that tight clastic reservoirs of land facies in West Sichuan depression,Sichuan Basin,have such features as compactness,low porosity and low permeability,cross bedding of thin layers,multi layer nappe and high heterogeneity.These facts result in undoutably low profit and low success ratio of exploration in the past.In recent years,a great step has been achieved in oil and gas exploration and development through many different ways of making full use of seismic data,studying well those features on gas bearing seismic response,relying on other related subjects of science.Meanwhile,it played a decisive role indeed the technique of describing the space distribution of the reservoir.Along with some practical experiences of explorating the natural gas in tight and heterogeneous reservoirs in West Sichuan,a series of these techniques are well introduced in details here from many aspects as follows: analyzing the basic geologic characteristics of reservoirs,building up the model of seismic response of sand body,forecasting the reservoir distribution, testing and checking the margins of reservoirs and describing the space distribution.
It is well known that tight clastic reservoirs of land facies in West Sichuan depression,Sichuan Basin,have such features as compactness,low porosity and low permeability,cross bedding of thin layers,multi layer nappe and high heterogeneity.These facts result in undoutably low profit and low success ratio of exploration in the past.In recent years,a great step has been achieved in oil and gas exploration and development through many different ways of making full use of seismic data,studying well those features on gas bearing seismic response,relying on other related subjects of science.Meanwhile,it played a decisive role indeed the technique of describing the space distribution of the reservoir.Along with some practical experiences of explorating the natural gas in tight and heterogeneous reservoirs in West Sichuan,a series of these techniques are well introduced in details here from many aspects as follows: analyzing the basic geologic characteristics of reservoirs,building up the model of seismic response of sand body,forecasting the reservoir distribution, testing and checking the margins of reservoirs and describing the space distribution.
引文
1 李庆忠.走向精确勘探的道路.北京:石油工业出版社,1993
2 刘雯林.油气田开发地震技术.北京:石油工业出版社,1996
3 刘泽容,信荃麟等.油藏描述原理与方法技术.北京:石油工业出版社,1993
4 唐建明,谢用良等.川西致密碎屑岩油/气藏地震勘探方法.中国新星石油文集,北京:地质出版社,1999
5 谢用良,唐建明等.地震地层反演在川西致密砂岩气藏描述中的应用.石油地球物理勘探,2000;35(2)
6 李正文,唐建明等.油气储集层突变理论识别技术及其应用.矿物岩石,1998;18(3)
7 李正文等.油气储集层线性与非线性联合预测方法技术及应用.石油物探,2000;39(6)
8 许多,李正文,李显贵,唐建明.非均质气藏AVO反演及应用研究.矿物岩石,2001;21(3)
9 RobertE .Sheriff.ReservoirGeophysics,SEG ,1992
10 QuincySeismicattributetechnologyforreservoirforecastingangmonitoring,TheLeadingEdge,1995
2 刘雯林.油气田开发地震技术.北京:石油工业出版社,1996
3 刘泽容,信荃麟等.油藏描述原理与方法技术.北京:石油工业出版社,1993
4 唐建明,谢用良等.川西致密碎屑岩油/气藏地震勘探方法.中国新星石油文集,北京:地质出版社,1999
5 谢用良,唐建明等.地震地层反演在川西致密砂岩气藏描述中的应用.石油地球物理勘探,2000;35(2)
6 李正文,唐建明等.油气储集层突变理论识别技术及其应用.矿物岩石,1998;18(3)
7 李正文等.油气储集层线性与非线性联合预测方法技术及应用.石油物探,2000;39(6)
8 许多,李正文,李显贵,唐建明.非均质气藏AVO反演及应用研究.矿物岩石,2001;21(3)
9 RobertE .Sheriff.ReservoirGeophysics,SEG ,1992
10 QuincySeismicattributetechnologyforreservoirforecastingangmonitoring,TheLeadingEdge,1995
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