吐哈盆地胜北洼陷腹地及其东南地区白垩系底界不整合面划分探讨
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摘要
吐哈盆地红连油田下白垩统三十里大墩组与上侏罗统喀拉扎组之间发现了一套新的含油气地层,但对这套地层的归属存在不同的划分方案,这给新发现的含油气地层的命名、对比和油气勘探潜力评价以及开发技术政策的制定等带来了不利影响。指出白垩系与侏罗系的界限对应于燕山构造运动第Ⅱ幕产生的不整合面,准确地划分白垩系底界不整合面是正确划分红南9-12井新发现的含油气地层的关键。基于岩心、测井、地震反射等多方面资料的研究,认为将白垩系底界不整合面划分在新发现的含油气层底界较为合理,这样三十里大墩组进一步可划分为上下2个岩性段,新发现的含油气地层称为下段(K1s1),原划分的三十里大墩组统称上段(K1s2)。
A new set of oil-and gas-bearing reservoirs between Cretaceous and Jurassic have been found in the Honglian oilfield,Tuha basin.But there are different opinions on its classification,which has negative effect on the naming,correlation of the stratum,and the evaluation of oil and gas exploration potential as well as the making of development technology policies.The unconformity surface between the Cretaceous and Jurassic resulted from the second episode of Yanshanian tectonic movement.This paper presents the correlation and demonstration of several opinions on the new oil-and gas-bearing reservoir classification based on the integration of multi-disciplinary information such as core,logging and seismic feature,etc.It is concluded that the new oil-and gas-bearing reservoirs discovered in Well Hongnan9-12 should be classified to the Lower Cretaceous, for it is located above the unconformity surface between the Cretaceous and Jurassic.
A new set of oil-and gas-bearing reservoirs between Cretaceous and Jurassic have been found in the Honglian oilfield,Tuha basin.But there are different opinions on its classification,which has negative effect on the naming,correlation of the stratum,and the evaluation of oil and gas exploration potential as well as the making of development technology policies.The unconformity surface between the Cretaceous and Jurassic resulted from the second episode of Yanshanian tectonic movement.This paper presents the correlation and demonstration of several opinions on the new oil-and gas-bearing reservoir classification based on the integration of multi-disciplinary information such as core,logging and seismic feature,etc.It is concluded that the new oil-and gas-bearing reservoirs discovered in Well Hongnan9-12 should be classified to the Lower Cretaceous, for it is located above the unconformity surface between the Cretaceous and Jurassic.
引文
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[8]李双建,王清晨,李忠.库车坳陷库车河剖面重矿物分布特征及其地质意义[J].石矿物学杂志,2005,24(1):54-6l.
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[11]刘宝珺.沉积岩石学[M].北京:地质出版社,1980:64-73.
[12]胡见义,黄第藩,徐树宝,等.中国陆相石油地质理论基础[M].北京:石油工业出版社,1994:135-138.
[13]刘宝君,李伟,付建奎,等.吐哈盆地台北凹陷粘土矿物纵向异常演化与成因分析[J].地球科学:中国地质大学学报,2002,27(5):504-508.
[14]邓磊,李文厚,袁明生.吐鲁番—哈密盆地的砂岩特点及构造意义[J].沉积学报,1999,17(1):97-98.
[15]邓磊,李文厚,袁明生.吐鲁番—哈密盆地陆源碎屑沉积环境及物源分析[J].沉积学报,1999,17(3):97-98.
[16]张代生,李成明.吐哈盆地台北凹陷沉积体系迁移对油气分布的控制[J].石油与天然气地质,2000,21(1):71-75.
[2]方世虎,宋岩,贾承造,等.准噶尔盆地白垩系底部砾岩与油气成藏的关系[J].天然气工业,2006,26(5):14.
[3]洪太元,蔡希源,何治亮,等.准噶尔盆地腹部白垩系底部不整合特征[J].新疆地质,2006,24(3):229-230.
[4]Chang C,Chen N,Coqard M P,et al.Preliminary conclusionsof the royal society and academica sinica,1985 geotraverse oftibet[J].Nature,1986,323:501-507.
[5]Jolivet M,Bruneim M,Seward D,et al.Mesozoic and Cenozoictectonics of the northern edge of the Tibetan Plateau:Fission-track constrains[J].Tectono Physics,2001(343):111-134.
[6]MATTE P,TAPP0NNIER P,ARNAUD N,et al.Tectonicsof western Tibet,between the Tarim and the Indus[J].EarthPlanet Sci Lett,1996(142):311-330.
[7]方世虎,郭召杰,吴朝东,等.准噶尔盆地南缘侏罗系碎屑成分特征及其对构造属性、盆山格局的指示意义[J].地质学报,2006,80(2):201-204.
[8]李双建,王清晨,李忠.库车坳陷库车河剖面重矿物分布特征及其地质意义[J].石矿物学杂志,2005,24(1):54-6l.
[9]靳卫广,梅冥相.库车盆地白垩纪层序地层格架与古地理演化[J].新疆石油天然气,2005,1(1):14.
[10]赵杏媛,罗俊成,杨帆.粘土矿物研究成果在塔里木盆地油气勘探中的应用[J].新疆石油地质,2006,26(5):570-573.
[11]刘宝珺.沉积岩石学[M].北京:地质出版社,1980:64-73.
[12]胡见义,黄第藩,徐树宝,等.中国陆相石油地质理论基础[M].北京:石油工业出版社,1994:135-138.
[13]刘宝君,李伟,付建奎,等.吐哈盆地台北凹陷粘土矿物纵向异常演化与成因分析[J].地球科学:中国地质大学学报,2002,27(5):504-508.
[14]邓磊,李文厚,袁明生.吐鲁番—哈密盆地的砂岩特点及构造意义[J].沉积学报,1999,17(1):97-98.
[15]邓磊,李文厚,袁明生.吐鲁番—哈密盆地陆源碎屑沉积环境及物源分析[J].沉积学报,1999,17(3):97-98.
[16]张代生,李成明.吐哈盆地台北凹陷沉积体系迁移对油气分布的控制[J].石油与天然气地质,2000,21(1):71-75.
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