| 摘要: |
| 构成塔中地区输导网络格架的输导体包括断裂、不整合面、裂缝和孔隙等' 利用分形方法，对塔中地区4个重 要构造面的断裂体系进行了分形研究。结果表明,塔中地区下奥陶统顶(TgSjfe)分形维数最高,为1.39:其次是寒 武系膏盐岩层顶(Tg7),为1.24;最小的是石炭系生屑灰岩顶(Tg2"),为1.05。按其流体运动特点,塔中地区不整合 面h、下输导体分属于两个不同的流体流动场,不整合面以下输导体主要由孔-洞-缝体系构成;不整合面以上输 导体为层状渗透体,在大多数情况下属于孔隙型介质。根据塔中地区输导网络的特征，提出了以限制性横向输导为 主的输导网络和以非限制性纵向输导为主的输导网络的分类方案。 |
| 关键词: 塔里木盆地 塔中地区 断裂 不整合 输导体系 |
| DOI： |
| 分类号: |
| 基金项目:国家“973"重点基础研究发展规划项目(G1999043309) |
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| Petroleum migration pathway system of Tazhong area in Tarim Basin |
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ZHAO Yong-sheng1,2,3,Lui Ke-qi4
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(1. Guangzhou Institute of Geochemistry in Chinese Academy of Scieaces, Guangzhou 510640，China;2. Faculty of Ceo-Resource and Information in China Unwersity of Petroleum, Dongying 257061，Shandong Province, China;3. Graduate School of Chinese Academy of Sciences, Beijing 1000491 China;4.Ebngxin Oil Production Plant, ShengU Oi^ield Companyy Dongying 257094, Shandong Provincet China)
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| Abstract: |
| Petroleum migration pathway system，which is the link between source rock and trap，is the key factor of petroleum accumulation system. The migration pathway network in Tazhong area is composed of faults, unconfonnities, fractures, and pores. The four fault systems were studied by fractal method. The results dhow that the fault system i& self-similar within a certain scale range. The fractal dimension of Tg7, TgS1, Tg5 and. Tg2ff is 1.24, 1.39, 1.09 and 1.05 respectively. There are two different fields of fluid flow above and under the unconformities in tetrms of the characteristics of fluid flow in Tazhong area. The migration pathway under the unconformity ie mainly composed of pores, cave? andi fractures where the flow regularities are complicated. While the migration pathway above the unconfonrtity mainly conaiats of pores where the ￡luid flow can be characterized by Darcy' s law. There are limited lateral migration networit and unlimited vertical migration network in Tazhong area. |
| Key words: Tarim Basin Tazhong area fault unconformity pathway system |
