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轮南潜山奥陶系碳酸盐岩储层裂缝发育特征
引用本文:杨宁,吕修祥,潘文庆.轮南潜山奥陶系碳酸盐岩储层裂缝发育特征[J].西安石油大学学报(自然科学版),2004,19(4):40-42.
作者姓名:杨宁  吕修祥  潘文庆
作者单位:1. 石油大学,盆地与油藏研究中心,北京,昌平,102249;石油大学,油气成藏机理教育部重点实验室,北京,昌平,102249
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
摘    要:通过研究油气成藏机理 ,分析碳酸盐岩裂缝发育特征 ,表明轮南潜山构造致密的碳酸盐岩储层基质孔隙度低 ,渗透性差 ,很难提供良好的储集空间 ,但裂缝的发育可以改善碳酸盐岩的储集条件 .根据岩心观察 ,轮南潜山奥陶系裂缝十分发育 ,主要分布在潜山顶面以下的风化壳带内 ,包括构造缝、溶蚀缝、成岩缝、风化缝等类型 ,以构造缝为主 ;裂缝产状特征主要表现为直立的或高角度斜裂缝发育 ,走向上具有分带性 .裂缝的发育主要受构造活动及后期溶解作用的影响 ;轮南潜山裂缝的发育 ,改善了碳酸盐岩的储集条件 ,同时也为油气的渗滤提供了通道

关 键 词:塔里木盆地  轮南潜山  奥陶系碳酸盐岩储层  裂缝发育特征
文章编号:1001-5361(2004)04-0040-03
修稿时间:2004年4月10日

Feature of fracture development in Ordovician carbonate reservoir of Lunnan burial hill
YANG Ning.Feature of fracture development in Ordovician carbonate reservoir of Lunnan burial hill[J].Journal of Xian Shiyou University,2004,19(4):40-42.
Authors:YANG Ning
Abstract:Compact carbonate reservoir is of low porosity and permeability, and it cannot provide effective storage and accumulation space. But the growth of fractures can improve its storage and accumulation conditions. Based on the core observation of 1207 samples from 26 wells in Lunnan area, it is held that Ordovician fractures develop well in Lunnan burial hill. The fractures mainly distribute in the weathering crust zone under the surface of the burial hill. The fractures can be classified as tectonic fractures, kluftdarren, diagenetic fractures and weathered fractures, etc., and of them, tectonic fractures dominate. The orientation of the fractures is mainly vertical or high-angle of dip. The distribution of the fractures is characterized by zonation. The growth of the fractures is mainly affected by multiphase tectonic activities and later dissolution. The fractures in Lunnan burial hill improve the storage and accumulation conditions of the carbonate rock and provide the pathways for hydrocarbon filtration.
Keywords:Talimu Basin  Lunnan burial hill  Ordovician carbonate reservoir  feature of fracture development
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