薄互层地震波形特征研究——以博兴洼陷沙四段滩坝砂为例
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摘要
陆相断陷湖盆中薄互层非常普遍,如滩坝砂岩,具有横向变化快、单层厚度薄等特点,加之受地震资料分辨率低等因素的影响,致使其地震预测难度极大。文中在分析博兴洼陷沙四段滩坝砂岩发育区各种岩性地球物理特征的基础上,从正演模型入手,结合实际验证,分析了不同岩性及其组合的地震反射特征,找出了研究区砂体组合反射在地震波形结构、极大值两侧面积比等地震属性上的表现形式,总结了薄互层及其组合模式与地震反射各属性的对应关系,以此进行地震属性预测,取得良好效果,在东营凹陷西部沙四段滩坝砂岩储层的勘探中较准确地预测出储层的发育带。
Thin-alternating-beds exist commonly in rifted terestrial lake basin,like beach bar sandstones;they have some common characteristics,like the fast changes in horizontal direction and thinness of a single bed;these features,in addition to the low seismic data resolution,make the seismic prediction difficult.In this study,we have analyzed all kinds of lithologic geophysical signatures in the area where the beach bar sandstones developed in Es4 in Boxing Sag,and analyzed the seismic reflection features of different lithologies and their combinations using an inversion model combined with actual well results.The study determined the seismic attributes,such as the seismic waveform structure and the ratio of the areas on both sides of the maximum of the seismic reflections from different sandstone combinations,and summed up the corresponding relationships of the thin-alternating-beds and their combination patterns with the attributes of each seismic reflection.Using these results,we have predicted exactly the development belt of reservoir in exploring the bank and dam body reservoir of Es4 in the west of Dongying Depression.
Thin-alternating-beds exist commonly in rifted terestrial lake basin,like beach bar sandstones;they have some common characteristics,like the fast changes in horizontal direction and thinness of a single bed;these features,in addition to the low seismic data resolution,make the seismic prediction difficult.In this study,we have analyzed all kinds of lithologic geophysical signatures in the area where the beach bar sandstones developed in Es4 in Boxing Sag,and analyzed the seismic reflection features of different lithologies and their combinations using an inversion model combined with actual well results.The study determined the seismic attributes,such as the seismic waveform structure and the ratio of the areas on both sides of the maximum of the seismic reflections from different sandstone combinations,and summed up the corresponding relationships of the thin-alternating-beds and their combination patterns with the attributes of each seismic reflection.Using these results,we have predicted exactly the development belt of reservoir in exploring the bank and dam body reservoir of Es4 in the west of Dongying Depression.
引文
[1]Wang B H,Qian K.Geologic Research Exploration Practice[M].Dongying:Petroleum University Press,1992(in Chi-nese).
[2]Cai J H.Comprehensive application of technology with wave formanalysis and seismic characteristicinversion to beach bar sandstones prediction[J].Petroleum Geology and Recovery Efficiency,2005,12(3):42-44(in Chinese).
[3]Ma S Z,Zhao D B.An approach to the thin-alternation-bed reservoir prediction by seismic data[J].Journal of Daqing Pe-troleumInstitute,1993,17(3):112-116(in Chinese).
[4]Yue YS.The application of model technology of studying ge-ology research geological significance of seismic attribution[J].Geophysical and Geochemical Exploration,2001,25(3):191-197(in Chinese).
[5]Sun X N,Liu Y,Man Y.Reservoir-forming conditions of beach-barrier sandstone of segment Shasi in Western Dongy-ing Depression[J].Foreign Oilfield Engineering,2003,19(7):24-25(in Chinese).
[6]Zhang Y,Tang D,Zhou J G.Reservoir descriptiontechnolo-gy of beach-bar sandin the gentle slope belt of Dongying Sag[J].Petroleum Geology and Recovery Efficiency,2005,12(4):14-16(in Chinese).
[7]Li X H,Xiao H Q,Wang N.Reservoir characteristics and hydrocarbon enrichment rules in upper Es4of Boxing subsag in Dongying Sag[J].Petroleum Geology and Recovery Effi-ciency,2001,8(3):21-24(in Chinese).
[8]LüJ Y.Prediction of carbonate reservoirs using waveforma-nalysis in Tahe Oilfield[J].Progressin Exploration Geophys-ics,2004,27(2):112-116(in Chinese).
[9]Cui Y Q,Feng X Y,Li X P,et al.High-precision reservoir prediction of thin interbedding sandstones and mudstones in Maxi area in Raoyang Sag[J].China Petroleum Exploration,2008,13(2):67-70(in Chinese).
[10]Zhang Q F,Wang Y Q,Wang T Q,et al.Seismic prediction techniques for thininterbed channel sand[J].Natural Gas In-dustry,2007,27(Suppl1):406-407(in Chinese).
[11]Bitgeri D,Carlini A.Non-linear estimation of reflection coef-ficients fromseismic data[J].Geophysics Prospecting,1981,29:672-686.
[12]Zhao L M,Lang X L,Jin F M,et al.Application of waveform classification technique in the prediction of subtle reservoirs[J].Petroleum Exploration and Development,2001,28(6):53-55(in Chinese).
[13]Dasgupta S N.Fromseismic character and seismic attributes to predict reservoir properties—A case history in Arab-D Reservoir of Saudi Arabia[C]∥70th Aun.Int.SEG Mtg,Cal-gary City,Canada,2000:597-600.
[1]王秉海,钱凯.胜利油区地质研究与勘探实践[M].东营:石油大学出版社,1992.
[2]才巨宏.综合应用波形分析及地震特征反演技术预测滩坝砂岩[J].油气地质与采收率,2005,12(3):42-44.
[3]马世忠,赵德斌.泰康地区薄互层储层地震预测探讨[J].大庆石油学院学报,1993,17(3):112-116.
[4]乐友善.利用模型技术研究地震属性的地质意义[J].物探与化探,2001,25(3):191-197.
[5]孙锡年,刘渝,满燕.东营凹陷西部沙四段滩坝砂岩油气成藏条件[J].国外油田工程,2003,19(7):24-25.
[6]张宇,唐东,周建国.东营凹陷缓坡带滩坝砂储层描述技术[J].油气地质与采收率,2005,12(4):14-16.
[7]李秀华,肖焕钦,王宁.东营凹陷博兴洼陷沙四段上亚段储集层特征及油气富集规律[J].油气地质与采收率,2001,8(3):21-24.
[8]吕景英.用波形分析法预测塔河油田碳酸盐岩储层[J].勘探地球物理进展,2004,27(2):112-116.
[9]崔永谦,冯小英,李先平,等.饶阳凹陷马西地区砂、泥岩薄互层高精度储层预测的实践[J].中国石油勘探,2008,13(2):67-70.
[10]张巧凤,王余庆,王天琦,等.薄互层河道砂岩地震预测技术[J].天然气工业,2007,27(增刊1):406-407.
[12]赵力民,郎晓玲,金凤鸣,等.波形分类技术在隐蔽油藏预测中的应用[J].石油勘探与开发,2001,28(6):53-55.
[2]Cai J H.Comprehensive application of technology with wave formanalysis and seismic characteristicinversion to beach bar sandstones prediction[J].Petroleum Geology and Recovery Efficiency,2005,12(3):42-44(in Chinese).
[3]Ma S Z,Zhao D B.An approach to the thin-alternation-bed reservoir prediction by seismic data[J].Journal of Daqing Pe-troleumInstitute,1993,17(3):112-116(in Chinese).
[4]Yue YS.The application of model technology of studying ge-ology research geological significance of seismic attribution[J].Geophysical and Geochemical Exploration,2001,25(3):191-197(in Chinese).
[5]Sun X N,Liu Y,Man Y.Reservoir-forming conditions of beach-barrier sandstone of segment Shasi in Western Dongy-ing Depression[J].Foreign Oilfield Engineering,2003,19(7):24-25(in Chinese).
[6]Zhang Y,Tang D,Zhou J G.Reservoir descriptiontechnolo-gy of beach-bar sandin the gentle slope belt of Dongying Sag[J].Petroleum Geology and Recovery Efficiency,2005,12(4):14-16(in Chinese).
[7]Li X H,Xiao H Q,Wang N.Reservoir characteristics and hydrocarbon enrichment rules in upper Es4of Boxing subsag in Dongying Sag[J].Petroleum Geology and Recovery Effi-ciency,2001,8(3):21-24(in Chinese).
[8]LüJ Y.Prediction of carbonate reservoirs using waveforma-nalysis in Tahe Oilfield[J].Progressin Exploration Geophys-ics,2004,27(2):112-116(in Chinese).
[9]Cui Y Q,Feng X Y,Li X P,et al.High-precision reservoir prediction of thin interbedding sandstones and mudstones in Maxi area in Raoyang Sag[J].China Petroleum Exploration,2008,13(2):67-70(in Chinese).
[10]Zhang Q F,Wang Y Q,Wang T Q,et al.Seismic prediction techniques for thininterbed channel sand[J].Natural Gas In-dustry,2007,27(Suppl1):406-407(in Chinese).
[11]Bitgeri D,Carlini A.Non-linear estimation of reflection coef-ficients fromseismic data[J].Geophysics Prospecting,1981,29:672-686.
[12]Zhao L M,Lang X L,Jin F M,et al.Application of waveform classification technique in the prediction of subtle reservoirs[J].Petroleum Exploration and Development,2001,28(6):53-55(in Chinese).
[13]Dasgupta S N.Fromseismic character and seismic attributes to predict reservoir properties—A case history in Arab-D Reservoir of Saudi Arabia[C]∥70th Aun.Int.SEG Mtg,Cal-gary City,Canada,2000:597-600.
[1]王秉海,钱凯.胜利油区地质研究与勘探实践[M].东营:石油大学出版社,1992.
[2]才巨宏.综合应用波形分析及地震特征反演技术预测滩坝砂岩[J].油气地质与采收率,2005,12(3):42-44.
[3]马世忠,赵德斌.泰康地区薄互层储层地震预测探讨[J].大庆石油学院学报,1993,17(3):112-116.
[4]乐友善.利用模型技术研究地震属性的地质意义[J].物探与化探,2001,25(3):191-197.
[5]孙锡年,刘渝,满燕.东营凹陷西部沙四段滩坝砂岩油气成藏条件[J].国外油田工程,2003,19(7):24-25.
[6]张宇,唐东,周建国.东营凹陷缓坡带滩坝砂储层描述技术[J].油气地质与采收率,2005,12(4):14-16.
[7]李秀华,肖焕钦,王宁.东营凹陷博兴洼陷沙四段上亚段储集层特征及油气富集规律[J].油气地质与采收率,2001,8(3):21-24.
[8]吕景英.用波形分析法预测塔河油田碳酸盐岩储层[J].勘探地球物理进展,2004,27(2):112-116.
[9]崔永谦,冯小英,李先平,等.饶阳凹陷马西地区砂、泥岩薄互层高精度储层预测的实践[J].中国石油勘探,2008,13(2):67-70.
[10]张巧凤,王余庆,王天琦,等.薄互层河道砂岩地震预测技术[J].天然气工业,2007,27(增刊1):406-407.
[12]赵力民,郎晓玲,金凤鸣,等.波形分类技术在隐蔽油藏预测中的应用[J].石油勘探与开发,2001,28(6):53-55.
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