鱼卡地区油砂矿地质特征及其成矿模式  

Geological Features and Mineralization Mode in Oil Sands of the Yuka Area

作　　者：曹占元[1] 梁晓飞[1,2] 张晓宝[1] 蒋峥文 孙国强[1] 

机构地区：[1]甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]中国石油青海油田分公司,甘肃敦煌736202

出　　处：《特种油气藏》2015年第4期47-50,153,共4页Special Oil & Gas Reservoirs

基　　金：中国科学院2012年度"西部之光"人才计划支持项目"马海地区深层构造特征及油气藏成因类型研究"(1308RJZA310);甘肃省重点实验室专项(1309RTSA041)联合资助

摘　　要：运用钻井资料、地球化学分析和地震解释等方法,对柴达木盆地鱼卡地区油砂矿地质特征及成矿模式进行系统研究。结果表明:鱼卡地区油源丰富、有机质丰度高、类型好、成熟度低;储层物性较好,属于中高孔、中渗储层;泥岩封盖能力强,形成下生上储、自生自储式的生储盖组合;圈闭形成期与主生烃期的匹配关系良好,断裂构造发育,具备形成大型油砂矿的有利条件。综合分析认为鱼卡地区为构造抬升型油砂成矿模式。研究可对柴达木盆地非常规油气勘探有一定的指导意义。Drilling data,geochemical analysis and seismic interpretation methods were used to conduct systematic research on geological features and mineralization mode of oil sands in the Yuka Area,the Qaidam Basin. The Results show that the Yuka Area is featured by rich oil source,high abundance of organic matter,good type and low maturity. The physical properties of the reservoir was favorable,featured by medium- high porosity and medium permeability. The sealing capacity of mudstone was high,forming source- reservoir- caprock assemblage of lower generation,upper accumulation and self generation. The matching relationship between trap- forming period and major source generation period was good with fractures developed. There were favorable conditions for forming large- scale oil sands. Comprehensive analysis revealed that the Yuka Area was featured by uplifting structure for the mineralization of oil sands. Research is of instructive significance to unconventional oil and gas exploration in Qaidam Basin.

关 键 词：油砂 地质特征 成矿模式 鱼卡地区 

分 类 号：TE121[石油与天然气工程—油气勘探] TE122