油砂山地区油砂矿地质特征及成藏模式  

Geology and Hydrocarbon Accumulation Modes of Oilsands in Youshashan

作　　者：曹占元[1] 申繁华 龙国徽 唐丽 张晓宝[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]中国石油测井有限公司,新疆鄯善838200 [3]中国石油青海油田分公司,甘肃敦煌736202

出　　处：《特种油气藏》2016年第2期27-30,152,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"柴达木及羌塘盆地油砂矿勘查示范工程"(1309RTSA041)联合资助

摘　　要：通过地质勘查、录井描述、扫描电镜、铸体薄片、荧光薄片和地震解释等方法,对油砂山地区地表及地下油砂地质特征和成藏模式进行研究。结果表明:油砂山地区油砂主要出露于油砂山构造高点,发育层位为下油砂山组和上干柴沟组2套地层;油砂储层具有成分成熟度、结构成熟度均偏低的岩石学特征;储层物性总体表现为中孔、中高渗特征;储集空间主要为粒间孔和残余粒间孔,孔隙分布较均匀,连通性较好,孔隙中油质沥青含量较高。该研究为油砂山地区新型油气资源勘探提供了理论依据。Geology reconnaissance,logging interpretation,scanning electron microscopy,casting thin-section analysis,fluorescence thin-section analysis and seismic interpretation are used to investigate the geology and hydrocarbon accumulation modes of surface and subsurface oilsands in Youshashan. Investigation indicates that oilsands mainly expose in the high-part of Youshashan,lower Youshashan and upper Ganchaigou mainly develop in this region. The oilsand reservoir rocks are featured by both relatively low compositional maturity and textural maturity. The oilsand reservoirs are characterized by medium porosity and mid-high permeability. The reservoir space mainly consists of intergranular pores and residual intergranular pores with relatively average distribution,better connectivity and relatively high oil bitumen content. The investigation could provide a theoretical reference for mew hydrocarbon exploration in Youshashan.

关 键 词：油砂矿 分布特征 储层特征 成藏模式 油砂山地区 

分 类 号：TE121[石油与天然气工程—油气勘探]