| 塔中地区奥陶系碳酸盐岩不整合带的结构 |
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| 引用本文： | 刘克奇,蔡忠贤,张淑贞,赵桂青.塔中地区奥陶系碳酸盐岩不整合带的结构[J].地球科学与环境学报,2006,28(2):41-44. |
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| 作者姓名： | 刘克奇 蔡忠贤 张淑贞 赵桂青 |
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| 作者单位： | 1. 中国石化胜利油田有限公司,东辛采油厂,山东,东营,257094
2. 中国地质大学,资源学院,湖北,武汉,430074 |
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| 基金项目： | 国家九五重大科技攻关项目(960007) |
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| 摘 要： | 塔中地区中上奥陶统与下奥陶统之间发育碳酸盐岩不整合,不整合带是溶解作用发生的有利地带,可以作为烃类运移通道或油气聚集的场所。应用地质和地球物理方法对塔中地区奥陶系碳酸盐岩不整合进行了研究。塔中地区奥陶系碳酸盐岩不整合输导体在流体运动特点上不整合面上、下分属于两个不同的流体流动场,不整合面下,流动孔隙主要由孔洞缝孔隙体系构成,因此,流体的运动属于复杂介质条件下的流体运动,而不整合面上的层状渗透性体大多数情况下属于孔隙型介质,流体在其中的流动通常可以用达西定律加以描述。因此,不整合输导体中,流体从不整合面下向不整合面上运动,在流型上必然发生明显转换,这种转换对烃类的聚集是非常重要的。
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| 关 键 词： | 塔中地区 奥陶系 碳酸盐岩 不整合带 结构 塔里木盆地 新疆 |
| 文章编号： | 1672-6561（2006）02-0041-04 |
| 收稿时间： | 2005-06-28 |
| 修稿时间： | 2005年6月28日 |
Structure of Ordovician Carbonate Unconformity Zone in Tazhong Area |
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| LIU Ke-qi,CAI Zhong-xian,ZHANG Shu-zhen,ZHAO Gui-qing.Structure of Ordovician Carbonate Unconformity Zone in Tazhong Area[J].Journal of Earth Sciences and Environment,2006,28(2):41-44. |
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| Authors: | LIU Ke-qi CAI Zhong-xian ZHANG Shu-zhen ZHAO Gui-qing |
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| Institution: | 1. Dongxin Petroleum Production Plant, Shengli Oil field Company of SINOPEC, Dongying 257094, Shandong, Chinas ;2. School of Resources, China University of Geosciences, Wuhan 430074, Hubei, China |
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| Abstract: | The unconformity between the middle-upper and the lower Ordovician serials is well developed in Tazhong area.As the favorable place of dissolution,the unconformity zone has the function to serve as the pathway of the migration and accumulation of oil and gas because of the improvement of its physical property.The unconformity zone is of great significance in the petroleum prospecting.The structure of the Ordovician carbonate unconformity zone is studied by means of geological and geophysical method.There are two different fields of fluid flow above and under the Ordovician carbonate unconformity in terms of the characteristics of fluid flow in Tazhong area.The migration pathway under the unconformity is mainly composed of pores,caves,and fractures where the flow regularities are complicated.While the migration pathway above the unconformity mainly consists of pores where the fluid flow can be characterized by Darcy's law.Apparently,there will be a shift of the flow pattern when the fluid migrates upward to penetrate through the unconformity,and it is of great importance for the petroleum accumulation. |
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| Keywords: | Tazhong area Ordovician carbonate unconformity zone structure Tarim Basin Xinjiang |
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