综合多种方法识别济阳拗陷反转构造
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摘要
陆相断陷湖盆陡坡带常发育多种砂体,由于其地震反射特征的特殊性,干扰了反转构造的识别。结合孤北洼陷五号桩断层带正反转褶皱和高青地区高青—平南断层正反转构造实例,分析了反转构造的地震反射特征,运用钻井资料进行地层细分和对比,声波时差进行剥蚀量的计算,流体包裹体的性质判断构造应力性质。五号桩断层带正反转褶皱地震反射特征呈现上凸下凹的外形,上部地层中间厚、两翼薄,且褶皱顶部遭受剥蚀,同相轴削蚀现象明显,下部地层保留了断陷盆地沉积充填特征;钻井资料亦显示背斜核部遭受剥蚀;声波时差随深度变化的关系曲线在剥蚀段明显错开。高青—平南断层发现了表征张性和压性环境的两类包裹体。多种方法相互约束可提高反转构造识别的准确率。
Steep slope of continental rift lake basin always develops a variety of sand bodies.They interfere with inversion structure recognition because of their particularity of seismic reflection characteristics.With examples of positive inversion folds of Wuhaozhuang fault zone in Gubei Sag and Gaoqing-Pingnan positive inversion fault in Gaoqing areas,the paper analyzes the seismic reflection characteristics of the inversion structure and formation subdivision and correlation with drilling data.The amount of erosion is calculated by acoustic time and tectonic stress characters are determined by fluid inclusions.The seismic reflection characteristics of positive inversion fold appear on the concave-convex shape in Wuhaozhuang fault zone,and the upper strata are thick in middle,thin in wings.The top of the fold suffers erosion,and reflection events cut significantly.The lower strata preserve filling characteristics of rift basin.Drilling data also show that the anticline core is denuded and acoustic time curve changes significantly in the denuded segment.Two types of inclusions developed in tensional and pressure environment in Gaoqing-Pingnan faults are found.The accuracy of inversion structure recognition is raised with a variety of mutually constraint methods.
Steep slope of continental rift lake basin always develops a variety of sand bodies.They interfere with inversion structure recognition because of their particularity of seismic reflection characteristics.With examples of positive inversion folds of Wuhaozhuang fault zone in Gubei Sag and Gaoqing-Pingnan positive inversion fault in Gaoqing areas,the paper analyzes the seismic reflection characteristics of the inversion structure and formation subdivision and correlation with drilling data.The amount of erosion is calculated by acoustic time and tectonic stress characters are determined by fluid inclusions.The seismic reflection characteristics of positive inversion fold appear on the concave-convex shape in Wuhaozhuang fault zone,and the upper strata are thick in middle,thin in wings.The top of the fold suffers erosion,and reflection events cut significantly.The lower strata preserve filling characteristics of rift basin.Drilling data also show that the anticline core is denuded and acoustic time curve changes significantly in the denuded segment.Two types of inclusions developed in tensional and pressure environment in Gaoqing-Pingnan faults are found.The accuracy of inversion structure recognition is raised with a variety of mutually constraint methods.
引文
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[10]韩宏伟,崔红庄,林松辉,等.东营凹陷北部陡坡带沙砾岩扇体地震地质特征[J].特种油气藏,2003,10(4):28-31.
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[12]Harding T P.Structural inversion at Rambuton oil field,south Sumatra basin[J].AAPG Bulletin,1983,63(8):1001-1021.
[13]Mitra S.Geometry and kinematic evolution of inversionstructures[J].AAPG Bulletin,1993,77(7):1159-1191.
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[15]郝雪峰,宗国洪,李传华,等.济阳拗陷正反转构造初步分析[J].油气地质与采收率,2001,8(3):8-10.
[16]褚庆忠.含油气盆地反转构造研究综述[J].西安石油大学学报,2004,19(1):28-35.
[17]Henry P H.Analysis of sonic well logs applied to erosionestimates in the Bighorn basin,Wyoming[J].AAPGBulletin,1996,80:630-647.
[18]刘景彦,林畅松,喻岳钰,等.用声波测井资料计算剥蚀量的方法改进[J].石油试验地质,2000,22(4):302-306.
[19]牟中海,陈志勇,陆廷清,等.柴达木盆地北缘中生界剥蚀厚度恢复[J].石油勘探与开发,2002,27(1):35-38.
[20]付晓飞,李兆影,卢双舫,等.利用声波时差资料恢复剥蚀量方法研究与应用[J].大庆石油地质与开发,2004,23(1):9-12.
[21]王震,张明利,王子煜,等.东海陆架盆地西湖凹陷不整合剥蚀厚度恢复[J].石油试验地质,2005,27(1):90-93.
[22]杨巍然,张文淮.断裂性质与流体包裹体组合特征[J].地球科学,1996,21(3):285-290.
[23]杨巍然,张文淮.构造流体——一个新的研究领域[J].地学前缘,1996,3(3-4):124-130.
[2]陈昭年,陈布科.松辽盆地反转构造与油气聚集[J].成都理工学院学报,1996,23(4):50-57.
[3]安作相.反转构造与老君庙油田形成[J].西安石油学院学报,1999,14(2):5-10.
[4]胡望水,刘学锋,吕新华,等.论正反转构造的分类[J].新疆石油地质,2000,21(1):5-6.
[5]赵国良.构造反转与油气聚集[J].新疆石油地质,2001,22(6):469-471.
[6]胡望水,卫拥军,张自其.辽河盆地反转期构造特征[J].西安石油学院学报:自然科学版,2002,17(5):5-13.
[7]谭试典.关于反转构造的几个问题——与蔡希泉、王同和先生商榷[J].新疆石油地质,2004,25(1):103-105.
[8]于福生,吉珍娃,杨雪,等.辽河盆地西部凹陷北部地区新生代断裂特征与圈闭类型[J].地球科学与环境学报,2007,29(2):149-153.
[9]刘传虎.沙砾岩扇体发育特征及地震描述技术[J].石油物探,2001,40(1):64-72.
[10]韩宏伟,崔红庄,林松辉,等.东营凹陷北部陡坡带沙砾岩扇体地震地质特征[J].特种油气藏,2003,10(4):28-31.
[11]林松辉,王华,王兴谋,等.断陷盆地陡坡带沙砾岩扇体地震反射特征——以东营凹陷为例[J].地质科技情报,2005,24(4):55-60.
[12]Harding T P.Structural inversion at Rambuton oil field,south Sumatra basin[J].AAPG Bulletin,1983,63(8):1001-1021.
[13]Mitra S.Geometry and kinematic evolution of inversionstructures[J].AAPG Bulletin,1993,77(7):1159-1191.
[14]宋廷光,于百莲,韩殿杰,等.正反转构造的类型和特点[J].地球科学,1995,20(3):271-275.
[15]郝雪峰,宗国洪,李传华,等.济阳拗陷正反转构造初步分析[J].油气地质与采收率,2001,8(3):8-10.
[16]褚庆忠.含油气盆地反转构造研究综述[J].西安石油大学学报,2004,19(1):28-35.
[17]Henry P H.Analysis of sonic well logs applied to erosionestimates in the Bighorn basin,Wyoming[J].AAPGBulletin,1996,80:630-647.
[18]刘景彦,林畅松,喻岳钰,等.用声波测井资料计算剥蚀量的方法改进[J].石油试验地质,2000,22(4):302-306.
[19]牟中海,陈志勇,陆廷清,等.柴达木盆地北缘中生界剥蚀厚度恢复[J].石油勘探与开发,2002,27(1):35-38.
[20]付晓飞,李兆影,卢双舫,等.利用声波时差资料恢复剥蚀量方法研究与应用[J].大庆石油地质与开发,2004,23(1):9-12.
[21]王震,张明利,王子煜,等.东海陆架盆地西湖凹陷不整合剥蚀厚度恢复[J].石油试验地质,2005,27(1):90-93.
[22]杨巍然,张文淮.断裂性质与流体包裹体组合特征[J].地球科学,1996,21(3):285-290.
[23]杨巍然,张文淮.构造流体——一个新的研究领域[J].地学前缘,1996,3(3-4):124-130.
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