准噶尔盆地莫索湾凸起石炭系上部岩性预测
摘要
准噶尔盆地莫索湾凸起深层石炭系存在特大型背斜圈闭,石炭系上部是否存在火山岩是莫索湾凸起深层油气勘探成功的关键。莫索湾凸起与相邻地区石炭系油气藏特征的对比研究发现,火山岩与沉积岩在磁力异常、地震相特征方面具有较大的差别,位于莫索湾凸起高部位的莫深1井区磁力异常特征与相邻的石西凸起火山岩油气田具有相似性,处于强—弱磁力异常之间的过渡带,接近中酸性火山岩磁力异常特征。地震相分析表明,莫索湾凸起大部分地区以强振幅反射为主,弱振幅反射主要分布在莫索湾凸起东南凹陷区。综合磁力异常与地震相特征,推测莫索湾凸起石炭系上部岩相特征为:凸起中部为中酸性火山岩夹沉积岩相分布区,凸起西南翼和东北翼为中基性火山岩分布区,凸起东南翼(芳2井区)和东道海子凹陷中南部及陆南1井区为沉积岩分布区。莫索湾凸起石炭系火山岩储层后期改造具有4个有利条件,推测莫索湾凸起石炭系火山岩储层发育。
A oversized anticline trap exists in deep Carboniferous of Mosowan uplift in Junggar Basin, but to explore deep oil/gas successfully,it is crucial to determine whether volcanic rocks exists in the upper Carboniferous or not. By comparing the features of oil/gas reservoirs inMosuowan uplift with those in its adjacent region, it is indicated that there are the large difference of magnetic and seismic anomaly betweenvolcanic and sedimentary rocks, but the magnetic anomaly and seismic facies feature of Moshen-1 well on the top of Mosuowan uplift aresimilar to those in oil/gas field in Shixi uplift, which is approached to the magnetic anomaly of middle-acid volcanic rocks, standing in thetransition belt from strong to weak magnetic anomaly. The analysis result of seismic facies shows that the majority of Mosuowan uplift has thefeature of strong amplitude reflection, and weak amplitude reflection is mainly distributed in the southeast sag of Mosuowan uplift. By integratingthe magnetic anomaly and seismic facies feature, it is inferred that the upper Carboniferous in Mosuowan uplift would have the followinglithologic-facies characteristics: middle-acid volcanic rock plus sedimentary rocks are mainly distributed in the central part of the uplift, andmiddle-basic volcanic rocks are distributed in the southwest and northeast limbs, and sedimentary rock is occurred in the southeast limb (Fang-2 well area) of the uplift, the central-southern part of Dongdaohaizi sag and Lunan-1 well area. The late reconstruction of Carboniferousvolcanic rocks in Mosuowan uplift has four favorable conditions, it is, therefore, inferred that the Carboniferous volcanic reservoirs would bewell developed in the uplift.
A oversized anticline trap exists in deep Carboniferous of Mosowan uplift in Junggar Basin, but to explore deep oil/gas successfully,it is crucial to determine whether volcanic rocks exists in the upper Carboniferous or not. By comparing the features of oil/gas reservoirs inMosuowan uplift with those in its adjacent region, it is indicated that there are the large difference of magnetic and seismic anomaly betweenvolcanic and sedimentary rocks, but the magnetic anomaly and seismic facies feature of Moshen-1 well on the top of Mosuowan uplift aresimilar to those in oil/gas field in Shixi uplift, which is approached to the magnetic anomaly of middle-acid volcanic rocks, standing in thetransition belt from strong to weak magnetic anomaly. The analysis result of seismic facies shows that the majority of Mosuowan uplift has thefeature of strong amplitude reflection, and weak amplitude reflection is mainly distributed in the southeast sag of Mosuowan uplift. By integratingthe magnetic anomaly and seismic facies feature, it is inferred that the upper Carboniferous in Mosuowan uplift would have the followinglithologic-facies characteristics: middle-acid volcanic rock plus sedimentary rocks are mainly distributed in the central part of the uplift, andmiddle-basic volcanic rocks are distributed in the southwest and northeast limbs, and sedimentary rock is occurred in the southeast limb (Fang-2 well area) of the uplift, the central-southern part of Dongdaohaizi sag and Lunan-1 well area. The late reconstruction of Carboniferousvolcanic rocks in Mosuowan uplift has four favorable conditions, it is, therefore, inferred that the Carboniferous volcanic reservoirs would bewell developed in the uplift.
引文
[1]周路,张义杰,雷德文,等.准噶尔盆地莫索湾凸起构造特征[J].中国石油勘探,2005,(51):24～29
[2]岑芳,罗明高,姚鹏翔.深埋藏火山岩高孔隙形成机制探讨[J].西南石油学院学报,2005,2(73):8～10
[3]余淳梅,郑建平,唐勇,等.准噶尔盆地五彩湾凹陷基底火山岩储集性能及影响因素[J].地球科学,2004,29(3):303～308
[4]张年富,曹耀华,况军,等.准噶尔盆地腹部石炭系火山岩风化壳模式[J].新疆石油地质,1998,1(96):450～452
[5]曹耀华,张年富,林金凤,等.深部储集层孔隙保存的岩石力学实验[J].新疆石油地质,1998,19(5):393～396
[6]罗群,刘为付,郑德山.深层火山岩油气藏的分布规律[J].新疆石油地质,2001,22(3):196～199
[7]何登发,况军,吴晓智,等.准噶尔盆地莫索湾凸起构造演化动力学[J].中国石油勘探,2005,(51):30～41
[8]吴庆福.论准噶尔中间地块的存在及其在哈萨克斯坦板块构造演化中的位置[A].见.中国地质学会构造地质专业委员会编.中国北方板块构造论文集(第2集)[C].北京:地质出版社,1987:29～38
[9]赵白.准噶尔盆地的构造特征与构造划分[J].新疆石油地质,1993,14(3):209～216
[10]陈书平,张一伟,汤良杰,等.准噶尔晚石炭世—二叠纪前陆盆地的演化[J].石油大学学报(自然科学版),200l,25(5):17～25
[11]周路,王绪龙,何登发,等.准噶尔盆地莫索湾地区深层压力预测[J].中国石油勘探,2005,5(1):46～55
[12]吴晓智,李策.准噶尔盆地莫索湾地区异常地层压力与油气聚集[J].新疆石油地质,1994,1(53):208～213
[2]岑芳,罗明高,姚鹏翔.深埋藏火山岩高孔隙形成机制探讨[J].西南石油学院学报,2005,2(73):8～10
[3]余淳梅,郑建平,唐勇,等.准噶尔盆地五彩湾凹陷基底火山岩储集性能及影响因素[J].地球科学,2004,29(3):303～308
[4]张年富,曹耀华,况军,等.准噶尔盆地腹部石炭系火山岩风化壳模式[J].新疆石油地质,1998,1(96):450～452
[5]曹耀华,张年富,林金凤,等.深部储集层孔隙保存的岩石力学实验[J].新疆石油地质,1998,19(5):393～396
[6]罗群,刘为付,郑德山.深层火山岩油气藏的分布规律[J].新疆石油地质,2001,22(3):196～199
[7]何登发,况军,吴晓智,等.准噶尔盆地莫索湾凸起构造演化动力学[J].中国石油勘探,2005,(51):30～41
[8]吴庆福.论准噶尔中间地块的存在及其在哈萨克斯坦板块构造演化中的位置[A].见.中国地质学会构造地质专业委员会编.中国北方板块构造论文集(第2集)[C].北京:地质出版社,1987:29～38
[9]赵白.准噶尔盆地的构造特征与构造划分[J].新疆石油地质,1993,14(3):209～216
[10]陈书平,张一伟,汤良杰,等.准噶尔晚石炭世—二叠纪前陆盆地的演化[J].石油大学学报(自然科学版),200l,25(5):17～25
[11]周路,王绪龙,何登发,等.准噶尔盆地莫索湾地区深层压力预测[J].中国石油勘探,2005,5(1):46～55
[12]吴晓智,李策.准噶尔盆地莫索湾地区异常地层压力与油气聚集[J].新疆石油地质,1994,1(53):208～213
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