THE GENESIS AND INFLUENTIAL FACTORS OF LAYERED RESERVOIR OF YELI-LIANGJIASHAN FORMATION IN THE JIYANG DEPRESSION OF THE BOHAI BAY BASIN
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摘要: 渤海湾盆地济阳坳陷下古生界奥陶系冶里-亮甲山组主要为一套厚层白云岩,其中发育大量的溶蚀孔洞,在裂缝沟通的情况下能够成为良好的油气储集层.利用渗透-回流模式,探讨了冶里-亮甲山组白云岩的成因机制,认为在白云岩化作用的基础上,早奥陶世末期的怀远运动导致研究区发生区域性隆升,形成风化壳型溶蚀孔洞,但这些孔洞是无效的储集空间;经过后期断裂作用的改造,地层中产生大量的裂缝将其沟通,才能使白云岩成为有效储层;断层的发育又沟通了大气降水和湖水,对储层进行二次溶蚀改造.因此,该区断裂作用决定了储层的形成和发育规模.Abstract: It was discovered that abundant isolated vug occurred in the Yeli-Liangjiashan Formation of Ordovician in the Jiyang Depression of the Bohai Bay Basin,which would turn into effective reservoir once connected by fractures.The article applied the seepage reflux mechanism developed by K.S.Deffeyes in 1965 to interpret the genesis of the dolomite of the Yeli-Liangjiashan Formation,and raised that regional weathering crust was formed by Huanyuan tectonic movement,which resulted in regional uplifting in the end of Early Ordovician,and that a great quantity of weathering crust vugs were deve-loped on the basis of dolomitisation.After these isolated vugs in the formation connected by the large mounts of fractures,which were generated by later fracturing reformation,the effective dolomite reservoir was formed.At the same time,the later faults linked up the atmospheric water and the lake water and reconstructed the reservoir by secondary corrosion.So the conclusion was that the development and its scale of this kind reservoir were controlled by later fracturing.
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[1] 宋国奇,徐春华,王世虎等.胜利油区古生界地质特征及油气潜力[M].武汉:中国地质大学出版社.2000 [2] 胡新铭,金平信,刘承红.渤南洼陷渤深6碳酸盐岩潜山储层描述[J].油气地质与采收率,2006,13(4):31-33 [3] 李丕龙,张善文,王永诗等.多样性潜山成因﹑成藏与勘探[M].北京:石油工业出版社,2003 [4] 马立驰,王永诗,姜在兴等.断陷盆地碳酸盐岩潜山储层模式[J].石油实验地质,2006,28(1):21-24 [5] 林会喜.济阳坳陷桩海地区下古生界白云岩储集空间形成机理[J].油气地质与采收率,2006,13(3):5-7 [6] 谢庆宾,韩德馨,陈方鸿等.鄂尔多斯盆地下古生界三山子白云岩体成因及储集性[J].石油大学学报(自然科学版),2001,25(6):6-12 [7] 韩征,辛文杰.准同生白云岩形成机理及其储集性[J].地学前缘,1995,2(4):226-230 [8] 顾家裕.塔里木盆地下奥陶统白云岩特征及成因[J].新疆石油地质,2000,21(2):120-122 [9] Tucker M E,Wright V P.Carbonate Sedimentology[M].Oxford:Blackwell Scientific Publications,1990 [10] 金振奎,冯增昭.华北地台东部下古生界白云岩的类型及储集性[J].沉积学报,1993,11(2):11-18 [11] 柏松章.碳酸盐岩潜山油田开发[M].北京:石油工业出版社,1996 [12] 安徽地质矿产局.安徽区域地质志[M].北京:地质出版社,1987 [13] 苏浙皖闽油气区石油地质志编写组.中国石油地质志(卷8):苏浙皖闽油气区[M].北京:石油工业出版社,1992 [14] 山东地质矿产局.山东区域地质志[M].北京:地质出版社,1987 [15] 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,1991 [16] 余家仁,陶洪兴,樊哲仁.华北潜山油藏碳酸盐岩储集层研究[J].北京:石油工业出版社,1993 [17] 杜韫华.山东孤北潜山带前侏罗纪古溶洞及深层孔隙体系的研究[A].见:石油地质进展丛书(2):基岩油气藏[M].北京:石油工业出版社,1987 [18] 张秉政.孤北古生界潜山高产条件分析[A].见:石油地质进展丛书(2):基岩油气藏[M].北京:石油工业出版社,1987 -
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