地质学方法估算准噶尔盆地西山窑组剥蚀厚度
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摘要
综合利用地层对比法和沉积速率法估算了准噶尔盆地西山窑组剥蚀厚度,用全盆地34条二维区域地震测线资料,估算了西山窑组剥蚀厚度的平面分布特征。利用单井的地质分层和精细年代格架数据,估算了西山窑组的单井剥蚀厚度。对比结果表明,两者剥蚀厚度的估算结果相近,绝对误差最大不超过50 m,相对误差在20%以内。估算结果表明,准噶尔盆地腹部西山窑组剥蚀厚度为100～400 m,且自北东向南西,剥蚀厚度逐渐增大,在南部剥蚀厚度可大于400 m。
Strata antithesis and sedimentary ratio analysis methods are used in the estimation of denuded strata comeback of Xishanyao Formation in Junggar basin.Strata antithesis method uses two dimension seismic data to comeback the plane distribution character of Xishanyao Formation,and sedimentary ratio analysis method uses well geological layer and precise chronology framework data to comeback well denudation thickness.The results show that these methods gain the similar denudation thickness with absolute error less than 50m,and relative error limited in 20%.The denudation thickness of Xishanyao Formation in Junggar basin varies from 100m to 400m,increases from northeast to southwest,and may reaches more than 400m in the south most of Junggar basin.
Strata antithesis and sedimentary ratio analysis methods are used in the estimation of denuded strata comeback of Xishanyao Formation in Junggar basin.Strata antithesis method uses two dimension seismic data to comeback the plane distribution character of Xishanyao Formation,and sedimentary ratio analysis method uses well geological layer and precise chronology framework data to comeback well denudation thickness.The results show that these methods gain the similar denudation thickness with absolute error less than 50m,and relative error limited in 20%.The denudation thickness of Xishanyao Formation in Junggar basin varies from 100m to 400m,increases from northeast to southwest,and may reaches more than 400m in the south most of Junggar basin.
引文
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[2]王毅,金之钧.沉积盆地中恢复地层剥蚀量的新方法[J].地球科学进展,1999,14(5):482-486.
[3]彭传圣.济阳坳陷孤北低潜山煤成气成藏条件及特征[J].中国海洋大学学报,2005,35(4):670-676.
[4]丁勇,王允诚,徐明军.塔河油田志留系成藏条件分析[J].石油实验地质,2005,27(6):232-237.
[5]邱荣华,林社卿,涂阳发.泌阳凹陷油气成藏特征及勘探潜力分析[J].石油天然气学报,2005,27(2):158-161.
[6]李振宏,王欣.鄂尔多斯盆地东部石千峰组天然气成藏机理初探[J].天然气地球科学,2005,16(3):314-318.
[7]牟中海,唐勇,崔炳富,等.塔西南地区地层剥蚀厚度恢复研究[J].石油学报,2002,23(1):40-44.
[8]Magara K.Thickness of Removed Sediments,Paleopore Pres-sure,and Paleotemperature,Southwestern Part of WesternCanada Basin[J].AAPG Bull,1976,60(4):554-565.
[9]Henry P H,Natalya A K.Analysis of Sonic Well Logs Ap-plied to Erosion Estimates in the Bighorn Basin,Wyoming[J].AAPG Bull,1996,80(5):630-646.
[10]Dow W G.Kerogen Studies and Geological Interpretations[J].Journal of Geochemical Exploration,1977,7(1):79-99.
[11]Katz B J,Pheifer R N,Schunk D J.Interpretation of Dis-continuous Vitrinite Reflectance Profiles[J].AAPG Bull,1988,72(8):926-931.
[12]胡圣标,汪集?,张容燕.利用镜质体反射率数据估算地层剥蚀厚度[J].石油勘探与开发,1999,26(4):42-45.
[13]郝石生,贺志勇,高耀斌,等.恢复地层剥蚀厚度的最优化方法[J].沉积学报,1988,6(4):93-98.
[14]张一伟,金之钧,刘国臣,等.塔里木盆地环满加尔地区主要不整合形成过程及剥蚀量研究[J].地学前缘,2000,7(4):449-457.
[15]刘国臣,金之均,李金昌.沉积盆地沉积—剥蚀过程定量研究的一种新方法——盆地波动分析应用之一[J].沉积学报,1995,13(3):23-30.
[16]Gleadow A J W,Dudaly I R,Iovering J F.Fission Track Anal-ysis:A New Tool for the Evaluation of Thermal Histories andHydrocarbon Potential[J].APEA Journal,1983,23:93-102.
[17]柳益群,周立发.关于地层剥蚀厚度求取方法的讨论——以吐哈盆地为例[J].西北大学学报:自然科学版,1997,27(4):337-339.
[18]赵文智,荆久强,薛良清,等.中国西北地区侏罗纪原形盆地形成与演化[M].北京:地质出版社,2000.
[19]邵雨,陈伟,张伯友.断层相关褶皱理论在准噶尔盆地南缘山前带构造研究的应用[J].地球科学与环境学报,2005,27(1):26-29.
[20]张卫海,查明,曲江秀.准噶尔盆地南缘古近系新近系异常高压系统与油气成藏机理[J].石油大学学报:自然科学版,2004,28(1):10-12.
[21]张勇刚.准噶尔盆地中央坳陷异常压力研究[J].新疆石油学院学报,2003,15(4):26-29.
[22]曲江秀,查明.准噶尔盆地异常压力类型及成因探讨[J].石油实验地质,2003,25(4):333-336.
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