陆西地区夏盐鼻状构造带岩性圈闭的识别
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摘要
准噶尔盆地陆西地区油气资源潜力丰富,近年来油气勘探在夏盐鼻状构造带侏罗系三工河组发现了一系列岩性油气藏,展现了浅层良好的勘探前景。采用沉积储集层地质建模、地震属性预测、波阻抗反演和数据体可视化分析等技术综合识别出玛东2井北、玛东3井区、玛东3井东、夏盐6井南和夏盐3井南等5个岩性圈闭。圈闭总面积361.7 km2,高点埋深2 150~2 270 m,玛东3井东岩性圈闭闭合高度最大达460 m.综合分析认为,夏盐鼻状构造带岩性圈闭发育,具备形成岩性油气藏的地质条件。
Luxi area of Junggar basin is rich in hydrocarbon resources,and in recent years,a series of lithologic hydrocarbon reservoirs have been found during hydrocarbon exploration of Sangonghe formation of Jurassic in Xiayan nose structural belt,which reveals great prospects in shallow layers.In this paper,technologies including sedimentary reservoir geological modeling,seismic attribute prediction,wave impedance inversion and data object visualization analysis are adopted to synthetically identify five lithologic traps,such as northern Well Madong-2 trap,Wellblock Madong-3 trap,eastern Well Madong-3 trap,southern Well Xiayan-6 trap and southern Well Xiayan-3 trap.The total area of these traps is 361.7 km2,the deepness of highs ranges from 2 150 m to 2 270 m,and the largest closure in eastern Well Madong-3 trap reaches 460 m.The synthetical analysis indicates that the lithologic traps are developed in Xiayan nose structural belt,and the geological conditions are favorable for forming lithologic hydrocarbon reservoirs.
Luxi area of Junggar basin is rich in hydrocarbon resources,and in recent years,a series of lithologic hydrocarbon reservoirs have been found during hydrocarbon exploration of Sangonghe formation of Jurassic in Xiayan nose structural belt,which reveals great prospects in shallow layers.In this paper,technologies including sedimentary reservoir geological modeling,seismic attribute prediction,wave impedance inversion and data object visualization analysis are adopted to synthetically identify five lithologic traps,such as northern Well Madong-2 trap,Wellblock Madong-3 trap,eastern Well Madong-3 trap,southern Well Xiayan-6 trap and southern Well Xiayan-3 trap.The total area of these traps is 361.7 km2,the deepness of highs ranges from 2 150 m to 2 270 m,and the largest closure in eastern Well Madong-3 trap reaches 460 m.The synthetical analysis indicates that the lithologic traps are developed in Xiayan nose structural belt,and the geological conditions are favorable for forming lithologic hydrocarbon reservoirs.
引文
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[2]刘传虎,庄文山.准噶尔盆地地层油气藏主控因素及勘探方向[J.]新疆石油地质,2008,19(2):147-151.
[3]邵先杰.辫状河三角洲-滨浅湖沉积微相及对油气分布的控制[J.]新疆石油地质,2007,28(6):687-690.
[4]王居峰,邓宏文,蔡希源.准噶尔盆地腹部下侏罗统三工河组沉积体系[J.]新疆石油地质,2005,26(2):137-141.
[5]杨平,刘云武,金成志.岩性圈闭预测方法及应用[J.]大庆石油地质与开发,2003,22(3):10-12.
[6]袁丽华,董万百,闫伟林,等.三维可视化技术在乌尔逊断陷钻探部署中的应用[J.]大庆石油地质与开发,2004,23(3):85-86.
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