鄂尔多斯盆地劳山油田长4+5、长6油层组储层特征研究  

The study on reservoir characteristics of Chang 4+5 and Chang 6 oil in Laoshan oil field Ordos Basin

作　　者：白奋飞 周凯[2] 于波 赵倩 贾朋涛 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]延长油田股份有限公司勘探部,陕西延安716000

出　　处：《内蒙古石油化工》2014年第18期104-108,共5页Inner Mongolia Petrochemical Industry

基　　金："十一五"国家科技支撑项目(项目编号:2007BAB17B00)

摘　　要：采用物性分析、压汞、铸体薄片、扫描电镜等方法,对劳山油田长4+5、长6油层组储层特征进行了研究。结果表明:劳山油田长4+5、长6储层岩石成分以长石砂岩为主,孔隙类型主要有原生粒间孔、溶蚀孔及微裂缝3种,孔隙结构有中孔-细喉型和中小孔-微喉型,对孔隙度影响较大的主要成岩作用是压实压溶、胶结和溶蚀作用。根据岩性、物性及孔隙结构特征参数,将研究区储层划分为特低渗储层Ⅱa和超低渗储层Ⅲb两类。The Chang 4＋5 and Chang 6 oil reservoir set which was an important oil reservoir in Ganquan area of Ordos Basin.Reservoir characteristics of the area was relatively weak in the past research.Used the property analysis,mercury intrusion,cast thin section and scanning electron microscopy etc.methods to study the oil reservoir characteristics of Chang 4＋5 and Chang 6 in Laoshan Oilfield.The results showed that：Chang 4＋5 and Chang 6 oil reservoir in Laoshan oil field mainly composed by arkose.Pore type mainly included intergranular pores,emposieu and microcracks.The main pore structure were axial canal-slender throat type and microbore-axial canal- microthroat type.The main diagenesis as compaction pressure solution,cementation and dissolution had greater impaction to porosity.The reservoir of the study area can be divided into ultra-low permeabilityⅡ a and ultra-low permeabilityⅢ b.

关 键 词：长4+5 长6 孔隙类型 成岩作用 劳山油田 鄂尔多斯盆地 

分 类 号：P618.130.21[天文地球—矿床学]