| 塔里木盆地HD23井区中奥陶统生物礁滩体的识别与研究 |
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| 引用本文： | 范秋海,张丽娟,朱永峰,李辉,马小平,马青,刘伟.塔里木盆地HD23井区中奥陶统生物礁滩体的识别与研究[J].地学前缘,2012,19(4):247-254. |
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| 作者姓名： | 范秋海 张丽娟 朱永峰 李辉 马小平 马青 刘伟 |
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| 作者单位： | 1. 中国石油 塔里木油田分公司， 新疆 库尔勒 841000;
2. 西南石油大学， 四川 成都 610500 |
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| 基金项目： | 国家重大专项“四川、塔里木等盆地及邻区海相碳酸盐岩大油气田形成条件、关键技术及目标评价” |
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| 摘 要： | 礁滩体储层是中国目前碳酸盐岩勘探的重点。塔里木盆地奥陶系礁滩复合储集体发育，中奥陶统生物礁发育层位主要在一间房组，发育区集中分布在塔北、巴楚等地，并以开阔台地台内点礁方式出现。HD23井区内共有奥陶系探井4口，其中HD17井、HD13井、YW2井在中奥陶统一间房组都钻遇了托盘类瓶筐石（Calathium）障积礁，礁的厚度约5 m，礁的上下地层均为砂屑鲕粒灰岩和砂砾屑灰岩等滩相沉积，形成礁滩复合体。文中通过钻井资料和地球物理资料，深入研究了HD23井区礁滩体的特征与分布。三维地震解释显示一间房组地层中存在一个厚度异常体，经分析认为该异常体就是局部异常发育的瓶筐石生物礁滩复合体，该生物礁滩体横向连片，有一定的分布范围和规模。对该井区内中奥陶统一间房组的生物礁滩体加以研究，将为下一步奥陶系的油气勘探提供依据。
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| 关 键 词： | 生物礁 礁滩复合体 中奥陶统 一间房组 塔里木盆地 |
| 收稿时间： | 2011-09-30 |
| 修稿时间： | 2011-12-30 |
The identification and study of reef-banks complex in Middle Ordovician in Wellblock HD 23 in Tarim Basin |
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| Fan Qiuhai,Zhang Lijuan,Zhu Yongfeng,Li Hui,Ma Xiaoping,Ma Qing,Liu Wei.The identification and study of reef-banks complex in Middle Ordovician in Wellblock HD 23 in Tarim Basin[J].Earth Science Frontiers,2012,19(4):247-254. |
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| Authors: | Fan Qiuhai Zhang Lijuan Zhu Yongfeng Li Hui Ma Xiaoping Ma Qing Liu Wei |
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| Institution: | 1.Tarim Oilfield Company,PetroChina,Korla 841000,China 2.Southwest Petroleum University,Chengdu 610500,China |
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| Abstract: | Middle Ordovician organic reefs in Tarim Basin mainly develop in Yijianfang Formation and are chiefly distributed in Tabei and Bachu areas with patch reef in open platform development.There are four Ordovician exploration wells at Wellblock HD23,in which HD17,HD13 and YW2 are found Calathium reefs in drilling,the thickness of the reef is about five meters,the upper and lower strata of the reefs is composed by arene oolitic limestone and gritty limestone.The explanation of 3D seismics at Wellblock HD23 exhibit that there are a thickness anomalous body in the strata of Yijianfang Formation,by analyzing,the anomalous body is the locally anomalous development of calathium reef-banks complex.The reef-banks complex is lateral sectors-connecting and has certain distribution scope and scale.The research of reef-banks complex of Middle Ordovician Yijianfang Formation at the wellblock will provide reference for the next step of Ordovician exploration activity. |
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| Keywords: | organic reef reef-banks complex Middle Ordovician Yijianfang Formation Tarim Basin |
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