| 塔北西部一间房组碳酸盐岩礁滩体同生期暴露溶蚀作用模式 |
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| 引用本文： | 赵学钦 杨海军,马,青 周成刚 孙崇浩 蔡,泉 孙仕勇.塔北西部一间房组碳酸盐岩礁滩体同生期暴露溶蚀作用模式[J].中国地质,2015(6):1811-1811. |
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| 作者姓名： | 赵学钦 杨海军 马 青 周成刚 孙崇浩 蔡 泉 孙仕勇 |
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| 作者单位： | 1. 西南科技大学环境与资源学院, 四川 绵阳 621010; 2. 中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒841000; 3. 西南石油大学地球科学与技术学院, 四川 成都610500; 4. 中国石油东方地球物理有限责任公司研究院库尔勒分院, 新疆 库尔勒 841000 |
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| 基金项目： | “十二五”国家重大专项“大型油气田及煤层气开发”（2011ZX05004-004）、油气资源与探测国家重点实验室开放课题基金（PRP/open-1303）联合资助。 |
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| 摘 要： | 在详细的钻井资料和岩心的宏观及微观特征研究的基础上,通过对塔北隆起西部奥陶系中统一间房组礁滩体沉积相特征及展布规律的分析,结合礁滩体储层同生期溶蚀作用特征研究,按照古沉积地貌单元结合岩相的方法建立了一间房组礁滩体同生期溶蚀作用模式。研究认为一间房组开阔台地相包括台内滩、滩间海和台内点礁3个亚相,沉积相平面分布稳定;一间房组的同生期暴露溶蚀作用明显,普遍反映出滩体的间歇性暴露的特征:生物钻孔和溶蚀孔洞内充填礁滩体暴露形成的古土壤泥;发育潮间带的化石碎片堆积和软体生物活动遗迹;岩心观察和成像测井可以识别出渗流-潜流带溶蚀作用旋回。按照礁滩相沉积地貌结合岩相的模式,将一间房组开阔台地的浅滩和点礁沉积划分出潮上长期暴露滩、潮间间歇暴露滩、潮下高能滩、瓶筐石障积礁、潮汐水道等地貌单元。
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| 关 键 词： | 塔里木盆地 奥陶系 一间房组 礁滩体 同生期溶蚀作用 |
Syn sedimentary corrosion mode of carbonate reef banks in the middle Ordovician Yijianfang Formation within the western Tabei uplift of Tarim Basin |
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| ZHAO Xue-qin,YANG Hai-jun,MA Qin,ZHOU Cheng-gang,SUN Chong-hao,CAI Quan,SUN Shi-yong.Syn sedimentary corrosion mode of carbonate reef banks in the middle Ordovician Yijianfang Formation within the western Tabei uplift of Tarim Basin[J].Chinese Geology,2015(6):1811-1811. |
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| Authors: | ZHAO Xue-qin YANG Hai-jun MA Qin ZHOU Cheng-gang SUN Chong-hao CAI Quan SUN Shi-yong |
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| Institution: | 1. Institute of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China; 2. Research Institute of Exploration and Development, Tarim Oilfield Branch Company, CNPC, Korla 841000, Xinjiang, China; 3. School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, Sichuan, China; 4. Research Institute of Exploration and Development, Korla Branch Company, PGP CNPC, Korla 841000, Xinjiang, China |
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| Abstract: | Abstract: On the basis of the detailed drilling data and the core characteristics at the macro and micro level, by means of analyses about characteristics and distribution rules of sedimentary facies, in combination with reef?banks syn?sedimentary corrosion reservoir characteristics,and according to the ancient sedimentary geomorphic units combined with lithofacies, the authors established the syn?sedimentary corrosion model of reef?banks in the Middle Ordovician Yijianfang Formation in the western Tabei uplift of Tarim Basin. According to the results obtained, first, the open platform facies of Yijianfang Formation contain platform?interbank, interbank sea and platform?inter patch reef, and the plane distribution of facies is stable; second, Yijianfang Formation exhibits obvious characteristics of the syn?sedimentary corrosion and widely reflects the characteristics of the intermittent exposure of bank: boring pores and corrosion pores are filled with ancient mud soil formed by the exposure of reef banks, the intertidal zone fossil fragment accumulation and traces of soft?bodied organisms activities are common, the corrosion cycle from seepage to undercurrent belt can be identified by core observation and Image Logging. According to the model, the banks and patch reefs of Yijianfang Formation are classified into five geomorphic units, i.e., supralittoral long?term exposure bank, intertidal intermittent exposure bank, subtidal high?energy bank, Calathium baffles tone and tideway. |
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| Keywords: | Tarim Basin Ordovician Yijianfang Formation reef?banks syn sedimentary corrosion |
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