地震分频技术的地质内涵及其效果分析
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摘要
地震分频技术是一种基于频谱分析的地震成像方法,可揭示地层的纵向整体变化规律、沉积相带的空间演变模式,并能描绘与分析储集层厚度分布,定量检测单砂体级别的薄互层砂体。K油田530井区侏罗系八道湾组主力含油层系为辫状河流相砂泥岩沉积,储集层厚度、物性变化大,地震资料品质不理想,用常规地球物理预测方法识别沉积相带与预测储集层厚度多解性强、难度大。在该区的精细储集层预测中,应用地震分频技术,揭示了沉积相单元的时空演化和物源区,建立了储集层预测模式,获得了显著的地质效果。图4参10
The seismic spectral decomposition technology is a new seismic imaging analysis method based on the spectral analysis technology, it can reveal the changing law of stratigraphy in vertical direction and 3-D evolution pattern of sedimentary facies.The quantificational description and analysis are carried out from reservoir to single sand set unit.In the primary oil-bearing stratum of Jurassic Badaowan sets at the Well 530 area of the K Oilfield,the seismic geologic condition is of changing reservoir thickness and geophysical property,poor seismic data quality,and it is difficult to identify and predict reservoir facies by the routine seismic property analysis method.The seismic spectral decomposition technology has been creatively introduced into the new fine reservoir description,therefore,the 3-D evolution pattern of sediment facies is showed,and the prediction pattern of reservoir and good results are obtained.
The seismic spectral decomposition technology is a new seismic imaging analysis method based on the spectral analysis technology, it can reveal the changing law of stratigraphy in vertical direction and 3-D evolution pattern of sedimentary facies.The quantificational description and analysis are carried out from reservoir to single sand set unit.In the primary oil-bearing stratum of Jurassic Badaowan sets at the Well 530 area of the K Oilfield,the seismic geologic condition is of changing reservoir thickness and geophysical property,poor seismic data quality,and it is difficult to identify and predict reservoir facies by the routine seismic property analysis method.The seismic spectral decomposition technology has been creatively introduced into the new fine reservoir description,therefore,the 3-D evolution pattern of sediment facies is showed,and the prediction pattern of reservoir and good results are obtained.
引文
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[8]徐怀大,王世风,陈开远.地震地层学解释基础[M].北京:中国地质大学出版社,1992.64-97.(XU Huai-da,WANG Shi-feng,CHEN Kai-yuan.Foundation of seismic-stratigraphicInterpretation[M].Beijing:China University of GeosciencesPress,1992.64-97.)
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[10]陈遵道.储层地震属性优化方法[M].北京:石油工业出版社,1994.26-45.(CHEN Zun-dao.Optimization methods ofreservoir seismic attributions[M].Beijing:Petroleum IndustryPress,1994.26-45.)
[2]武军昌,吴胜和,高志勇,等.东营凹陷坨71区块有利储集砂体预测研究[J].石油勘探与开发,2005,32(1):6-8.(WU Jun-chang,WU Sheng-he,Gao Zhi-yong,et al.Prediction of favorablereservoir sand in Tuo-71 Block of Dongying Depression[J].Petroleum Exploration and Development,2005,32(1):6-8.)
[3]申银民,孙玉善,顾桥元,等.塔里木盆地哈得逊地区下石炭统薄层砂体沉积层序与砂体预测[J].石油勘探与开发,2005,32(2):43-45.(SHEN Yin-min,SUN Yu-shan,GU Qiao-yuan,et al.Lower Carboniferous sediment sequence and sandbody forecastingin Hadexun area,Tarim Basin[J].Petroleum Exploration andDevelopment,2005,32(2):43-45.)
[4]慕德梁,李成,柳锦云.辽河坳陷牛心坨地区中生界火山岩预测技术与勘探效果[J].石油勘探与开发,2005,32(3):67-69.(MUDe-liang,LI Cheng,LIU Jin-yun.Mesozoic igneous reservoirforecast and exploration achievements in Niuxintuo Area,LiaoheDepression[J].Petroleum Exploration and Development,2005,32(3):67-69.)
[5]马永生,郭旭升,凡睿.川东北普光气田飞仙关组鲕滩储集层预测[J].石油勘探与开发,2005,32(4):60-64.(MA Yong-sheng,GUO Xu-sheng,FAN Rui.Reservoir prediction of FeixianguanFormation in Puguang Gas Field,Northeast Sichuan province[J].Petroleum Exploration and Development,2005,32(4):60-64.)
[6]刘书会,张繁昌,印兴耀,等.砂砾岩储集层的地震反演方法[J].石油勘探与开发,2003,30(3):124-125,128.(LIU Shu-hui,ZHANG Fan-chang,YIN Xing-yao,et al.Seismic inversion forgranule gravel reservoir[J].Petroleum Exploration andDevelopment,2003,30(3):124-125,128.)
[7]何又雄,姚姚.基于参考道的岩性识别与岩性剖面非线性反演[J].石油勘探与开发,2005,32(3):61-63.(HE You-xiong,YAO Yao.Lithological profile non-linear inversion by referencetrace-based lithological identification[J].Petroleum Explorationand Development,2005,32(3):61-63.)
[8]徐怀大,王世风,陈开远.地震地层学解释基础[M].北京:中国地质大学出版社,1992.64-97.(XU Huai-da,WANG Shi-feng,CHEN Kai-yuan.Foundation of seismic-stratigraphicInterpretation[M].Beijing:China University of GeosciencesPress,1992.64-97.)
[9]李世雄.小波变换和反演数学基础[M].北京:地质出版社,1994.10-44.(LI Shi-xiong.Wavelet transformation andinversion mathematics foundmation[M].Beiing:GeologicalPublishing House,1994.10-44.)
[10]陈遵道.储层地震属性优化方法[M].北京:石油工业出版社,1994.26-45.(CHEN Zun-dao.Optimization methods ofreservoir seismic attributions[M].Beijing:Petroleum IndustryPress,1994.26-45.)
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