| 塔河油田中下奥陶统顶面岩溶古水系对接现象及其意义 |
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| 引用本文： | 蔡忠贤,刘永立,刘群.塔河油田中下奥陶统顶面岩溶古水系对接现象及其意义[J].现代地质,2010,24(2). |
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| 作者姓名： | 蔡忠贤 刘永立 刘群 |
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| 作者单位： | 1. 中国地质大学,构造与油气资源教育部重点实验室,湖北,武汉,430074
2. 中国石化,西北油田分公司勘探开发研究院,新疆,乌鲁木齐,830011 |
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| 基金项目： | 国家"973"重点基础项目 |
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| 摘 要： | 塔河油田中下奥陶统,从加里东中期到海西期,经历多期构造运动及其引起的多期岩溶作用的叠加改造,岩溶缝洞系统非常发育。岩溶作用的发生,除地层的可溶性,主要依赖于岩溶水补给-径流-排泄过程中对岩石的溶解作用和侵蚀作用。因此,判断岩溶水的运动轨迹是一种非常重要的研究方法。基于三维地震资料,利用第三代相干体技术,刻画中下奥陶统顶面的岩溶古水系,发现上奥陶统覆盖区下部依然有许多地表水系存在,并且大多与上奥陶统缺失区的古水系对接。根据现代岩溶理论,划分奥陶系岩溶层组,厘定水文地质条件,分析两种不同时期岩溶古水系的形成和消亡过程,这对恢复古岩溶发育环境,划分古岩溶发育阶段,揭示古岩溶的发育规律具有重要的意义。
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| 关 键 词： | 古水系 古岩溶 奥陶系 塔河油田 |
The Appearance and Significance of Palaeo-Drainage Systems Connection in the Top of Lower-Middle Ordovician in Tahe Oilfield |
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| CAI Zhong-xian,LIU Yong-li,LIU Qun.The Appearance and Significance of Palaeo-Drainage Systems Connection in the Top of Lower-Middle Ordovician in Tahe Oilfield[J].Geoscience——Journal of Graduate School,China University of Geosciences,2010,24(2). |
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| Authors: | CAI Zhong-xian LIU Yong-li LIU Qun |
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| Affiliation: | CAI Zhong-xian1,LIU Yong-li1,LIU Qun2(1.Key Laboratory of Tectonics , Petroleum Resources of Ministry of Education,China University of Geosciences,Wuhan,Hubei 430074,China,2.Research Institute of Petroleum Exploration , Production of Northwest Oilfield Company,SINOPEC,Urumqi,Xinjiang 830011,China) |
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| Abstract: | Karst fracture-vug systems of Lower-Middle Ordovician in Tahe oilfield,develop very well,during multi-stage tectonic movement and karstification,from Middle Caledonian to Hercynian.Except for the dissolubility of the rock,karstification mainly depends on the denudation and corrosiveness of karstic water,in course of supply-through flow-drainage.So,predicting the trace of karstic water is an important method.Based on 3D seismic data,applying third generation coherence technique,karst palaeo-drainage systems ... |
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| Keywords: | palaeo-drainage system palaeokarst Ordovician Tahe oilfield |
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