塔河东南部三叠系中统阿克库勒组沉积相研究
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摘要
在详细观察描述岩心的基础上,结合区域地质背景、测井资料、地震剖面资料,划分了取心井段的沉积微相,进而开展了单井的沉积微相研究,认为研究区阿克库勒组为辫状河三角洲—湖泊沉积体系,主要发育辫状河三角洲相、湖泊相和湖底扇相,可进一步划分为6个亚相和多个微相。研究认为,阿1时期发育辫状河三角洲平原与前缘亚相沉积,阿3时期北部地区主要发育辫状河三角洲前缘亚相,中部地区主要发育湖底扇内扇与浅湖沉积,南部地区主要发育湖底扇中扇沉积。提出了研究区发育的辫状河—辫状河三角洲—湖泊组合以及辫状河—辫状河三角洲—湖泊—湖底扇组合两种沉积模式。
The sedimentary microfacies of coring interval are divided and the sedimentary microfacies of the single well is studied based on the detailed observations and descriptions of core and combined with regional geological setting,logging information and seismic section.The result shows that the Akekule Formation is braid river deltalacustrine deposit system,which mainly developed braid river delta facies,lacustrine facies,sublacustrine fan facies,and can be further divided into six subfacies as well as several microfacies.The braid river delta plain and front subfacies deposition was developed in the depositional stage of Member 1 of Akekule Formation,and the front subfaceies of the braid river delta developed mainly in the depositional stage of Member 3 of Akekule Formation in the north,the inner fan of sublacustrine fan and shallow lake sediments in the center and the middle fan of sublacustrine fan in the south.This paper proposes that there are two depositional models in the study area,one is the braid riverbraid river deltalake depositional model;the other is the braid riverbraid river deltalakesublacustrine fan depositional model.
The sedimentary microfacies of coring interval are divided and the sedimentary microfacies of the single well is studied based on the detailed observations and descriptions of core and combined with regional geological setting,logging information and seismic section.The result shows that the Akekule Formation is braid river deltalacustrine deposit system,which mainly developed braid river delta facies,lacustrine facies,sublacustrine fan facies,and can be further divided into six subfacies as well as several microfacies.The braid river delta plain and front subfacies deposition was developed in the depositional stage of Member 1 of Akekule Formation,and the front subfaceies of the braid river delta developed mainly in the depositional stage of Member 3 of Akekule Formation in the north,the inner fan of sublacustrine fan and shallow lake sediments in the center and the middle fan of sublacustrine fan in the south.This paper proposes that there are two depositional models in the study area,one is the braid riverbraid river deltalake depositional model;the other is the braid riverbraid river deltalakesublacustrine fan depositional model.
引文
[1]刘文奎,苏娟.塔河地区三叠系主要砂体沉积相类型分析[J].新疆地质,2010,28(30):303-305.
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[9]刘亚雷,胡秀芳,王道轩等.塔里木盆地三叠纪岩相古地理特征[J].断块油气田,2012,19(6):696-700.
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[2]马洪涛,蔡玥,付国民.塔河油田AT1井区中三叠统中油组湖底扇沉积特征研究[J].岩性油气藏,2010,22(3):53-58.
[3]刘海兴,秦天西,杨志勇.塔里木盆地三叠—侏罗系沉积相[J].沉积与特提斯地质,2003,23(1):37-44.
[4]刘辰生,郭建华,朱锐等.塔里木盆地阿克库勒地区三叠系中油组沉积相研究[J].西安石油大学学报(自然科学版),2007,22(6):36-39.
[5]邹元荣,金晓辉,闫相宾.塔河油田三叠系层序地层与沉积相研究[J].西安石油大学学报(自然科学版),2008,23(5):11-14.
[6]郭建华,刘辰生,朱锐.阿克库勒地区三叠系层序地层学及储集砂体成因类型[J].沉积学报,2007,25(2):169-175.
[7]陆金波,王英民,张雷等.阿克库勒地区三叠系湖底扇沉积及其主控因素[J].中国石油大学学报(自然科学版),2011,35(2):12-17.
[8]陆金波,王英民,吴嘉鹏.阿克库勒地区三叠系砂体类型及分布模式[J].科技导报,2011,29(15):39-44.
[9]刘亚雷,胡秀芳,王道轩等.塔里木盆地三叠纪岩相古地理特征[J].断块油气田,2012,19(6):696-700.
[10]郭建华,朱美衡,刘辰生等.阿克库勒凸起东河砂岩的沉积相与层序地层[J].石油与天然气地质,2005,26(6):808-814.
[11]赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001.
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