哈拉哈塘地区良里塔格组沉积特征分析
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摘要
综合运用录井、测井、岩心、薄片及地震等资料,对塔里木盆地哈拉哈塘地区上奥陶统良里塔格组的岩石类型、沉积特征及台缘滩展布进行了研究。结果表明:良里塔格组沉积时期,研究区主体处于碳酸盐岩台地边缘相带,平面上由北向南依次发育台缘洼地、台缘滩、台地前缘斜坡及盆地相(亚相),沉积物以瘤状灰岩夹砂屑灰岩为主。其中,台缘滩亚相砂屑灰岩呈东西向展布,厚度较大,横向连续性较好,可作为该区有利的储层。
Based on core observation,thin section analysis,logging and seismic data analysis,we studied the rock types,sedimentary characteristics and reef flat distribution of the Upper Ordovician Lianglitage Formation in Halahatang area.The result shows that during the depositional stage of Lianglitage Formation,the sediments are mainly of nodular limestones and lamellar calcarenites,and the depositional environment is marginal facies in carbonate platform.In the plane,it successively developed basin facies,platform foreslope,reef flat on the edge of platform and platform margin depression from south to north.The reef flat on the edge of platform is distributed in the direction of EW,with great thickness and fine lateral continuity.The calcarenites of reef flat facies on the edge of platform can act as the favorable reservoir.
Based on core observation,thin section analysis,logging and seismic data analysis,we studied the rock types,sedimentary characteristics and reef flat distribution of the Upper Ordovician Lianglitage Formation in Halahatang area.The result shows that during the depositional stage of Lianglitage Formation,the sediments are mainly of nodular limestones and lamellar calcarenites,and the depositional environment is marginal facies in carbonate platform.In the plane,it successively developed basin facies,platform foreslope,reef flat on the edge of platform and platform margin depression from south to north.The reef flat on the edge of platform is distributed in the direction of EW,with great thickness and fine lateral continuity.The calcarenites of reef flat facies on the edge of platform can act as the favorable reservoir.
引文
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[7]胡九珍,冉启贵,刘树根,等.塔里木盆地东部地区寒武系—奥陶系沉积相分析[J].岩性油气藏,2009,21(2):70-75.
[1]刘宝珺,张锦泉,刘效曾,等.沉积成岩作用[M].北京:科学出版社,1992:93-114.
[2]刘凤,王振宇,孙崇浩,等.中古2井区良里塔格组礁滩体发育特征[J].断块油气田,2009,16(5):13-16.
[3]顾家裕,张兴阳,罗平,等.塔里木盆地奥陶系台地边缘生物礁、滩发育特征[J].石油与天然气地质,2005,26(3):277-283.
[4]郑兴平,潘文庆,常少英,等.塔里木盆地奥陶系台缘类型及其储层发育程度的差异性[J].岩性油气藏,2011,23(5):1-4.
[5]赵澄林,朱筱敏,鲍志东,等.沉积岩石学[M].北京:石油工业出版社,2001:242-270.
[6]李凌,谭秀成,陈景山,等.塔中西部上奥陶统良里塔格组同生喀斯特储层成因分析[J].成都理工大学学报:自然科学版,2009,36(1):8-12.
[7]胡九珍,冉启贵,刘树根,等.塔里木盆地东部地区寒武系—奥陶系沉积相分析[J].岩性油气藏,2009,21(2):70-75.
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