新疆塔里木盆地东部奥陶系剥蚀厚度计算和平面成图
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摘要
针对塔东地区实际地质资料和低勘探程度的特点,应用声波时差、镜质体反射率、沉积速率等多种综合方法,计算11口钻井的奥陶系剥蚀量.平面上奥陶系顶面剥蚀厚度的求取主要依据27条地震剖面资料,应用沉积速率法计算剥蚀量,且剥蚀量的数量级受邻近钻井值的约束,并绘制了奥陶系剥蚀量平面图.研究区奥陶系顶面剥蚀量在111~2 929 m,总体趋势为南部剥蚀量大,北部剥蚀量小,即从盆地边部向盆地内部剥蚀量增加.东部剥蚀量相对较小,西部剥蚀量相对较大.
Ordovician stratigraphic erosion thickness of 11 wells was comprehensively calculated using acoustic transit times,vitrinite reflectances and deposition rates according to the geological data of eastern Tarimu Basin.Ordovician stratigraphic denudation thickness in plan is calculated using a deposition rate based on 27 seismic sections and actual values are controlled by wells.A contour diagram of Ordovician stratigraphic denudation thicknesses was compiled.Ordovician stratigraphic denudation thicknesses are between 111m-2929m.Thicknesses increase from north to south and from east to west.
Ordovician stratigraphic erosion thickness of 11 wells was comprehensively calculated using acoustic transit times,vitrinite reflectances and deposition rates according to the geological data of eastern Tarimu Basin.Ordovician stratigraphic denudation thickness in plan is calculated using a deposition rate based on 27 seismic sections and actual values are controlled by wells.A contour diagram of Ordovician stratigraphic denudation thicknesses was compiled.Ordovician stratigraphic denudation thicknesses are between 111m-2929m.Thicknesses increase from north to south and from east to west.
引文
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[2]Magara K.Thickness of removed sedimentary rocks paleoporepressure,and paleotemperature,southwestern part of Western Canadabasin[J].AAPG Bulletin,1976,60:554-566.
[3]刘景彦,林畅松.用声波测井资料计算剥蚀量的方法改进[J].石油实验地质,2000,22(4):302-306.
[4]张一伟,李京昌.原型盆地剥蚀量计算的新方法——波动分析法[J].石油与天然气地质,2000,21(1):88-91.
[5]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,l14(5):482-486.
[6]柳益群,周立发.用镜质体反射率法确定吐鲁番—哈密盆地的古地温梯度和估算地层剥蚀厚度[J].西北大学学报(自然科学版),1997,27(3):253-258.
[7]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.
[8]陈增智,柳广弟.修正的镜质体反射率剥蚀厚度恢复方法[J].沉积学报,1999,17(1):141-144.
[9]胡圣标,汪集.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):42-46.
[10]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,2000,21(1):35-38.
[11]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):40-45.
[12]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.
[13]贾承造.塔里木盆地构造特征与油气聚集规律[J].新疆石油地质,1999,20(3):177-268.
[14]袁嘉音,周新桂,肖玉茹,等.塔里木盆地油气勘探与潜力分析[J].地质力学学报2002,8(3):248-256.
[15]范善发,周中毅,解启来,等.塔里木盆地晶包有机质的地球化学性质及应用[J].矿物岩石地球化学通报,1996,5(2):88-90.
[16]张克银,邵志兵,邹元荣,等.塔里木盆地孔雀河复式油气系统[J].新疆石油地质,2004,25(4):122-124.
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