准噶尔盆地风城油砂矿床储层特征及成因分析  

Reservoir feature and geneitc analysis of oil-sand deposit in Fengcheng of Junggar basin

作　　者：刘虹强[1,2] 孙燕[1] 王祝彬[1] 刘人和[2] 拜文华[2] 

机构地区：[1]成都理工大学地球科学学院,四川成都610059 [2]中石油勘探开发研究院廊坊分院新能源所,河北廊坊065007

出　　处：《中国地质》2008年第6期1307-1314,共8页Geology in China

基　　金：国家重点基础研究发展规划项目(2001CB409800);国家自然科学基金项目(4080207-17、40212020)共同资助

摘　　要：油砂又称沥青砂,是一种含有天然沥青的砂岩或其他岩石。本文在简要概述准噶尔盆地油砂分布特征的基础上,分别从岩石学及储层地质学等方面分析了风城油砂矿赋存的层位、岩石学特征及储层的孔隙度和含油率等方面的特征;在成因方面,分别从构造、成岩作用及生物降解三方面分析了风城油砂矿形成的条件,其中,区域上的断层为油砂矿的形成起到了封闭遮挡的作用,而不整合则起到了运移通道的作用;成岩作用及生物降解对油砂矿的储层及油砂的最终形成起到了重要作用。通过对准噶尔盆地西北缘油砂储层特性及成因分析,探讨油砂矿的成因类型,为进一步勘探开发丰富的油砂资源,提供有效依据。Oil sands, also known as asphaltic sands, containing a natural sandstone of asphalt or other rock. This article mainly discusses the occurrence of oil sands, petrology, porosity and oil content of the reservoir. To understand the fromation of the Fengcheng oilsands, this article analysis the structure, diagenesis and biodegradation, ie. three conditions for the formation of oil sands. The regional faults serve as trapping structures; the unconformities play a role of migration pathways;and the diagenesis and biological degradation of oil sands ultimately result in the formation of the oil-bearing sands. Study of the features and origin of oil-sand reservoir can help exploration and mining of the oil-sand resources in the northwest margin of the Junggar Basin.

关 键 词：油砂 准噶尔盆地西北缘 储层 成因类型 

分 类 号：P618.130.21[天文地球—矿床学]