特低渗砂岩储层物性下限确定方法——以永进油田西山窑组储集层为例  

Methods for determining the petrophysical property cutoffs of extra-low porosity and permeability sandstone reservoirs——an example from the Xishanyao Formation reservoirs in Yongjin oilfield

作　　者：焦翠华[1] 夏冬冬 王军[3] 刘磊[3] 盛文波[3] 程培涛[3] 

机构地区：[1]中国石油大学资源与信息学院,北京102249 [2]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [3]中国石油化工股份有限公司胜利油田分公司地质科学研究院,山东东营257051

出　　处：《石油与天然气地质》2009年第3期379-383,共5页Oil & Gas Geology

摘　　要：准噶尔盆地永进油田西山窑组储集层孔隙度的分布范围在4%～6%之间,渗透率分布范围在0.01×10-3～0.30×10-3μm2之间,属典型的特低孔、特低渗储层。结合静态、动态资料及岩石物理实验,综合利用经验统计法、含油产状法、物性试油法、核磁共振法、最小流动孔喉半径法、驱替压力法等6种方法,确定了该储层有效物性下限孔隙度为6%、渗透率为0.08×10-3μm2,为有效厚度划分及储量计算提供了依据。With the porosity range of 4% to 6% and the permeability range of 0. 01 × 10^-3 μm^2 -0. 30 × 10^-3 μm^2, the Xishanyao Formation reservoirs in the Yongjin oilfield of the Junggar Basin are typical extra-low porosity and extra-low permeability reservoirs. According to the static and dynamic data and petrophysical experiments ,we have determined the effective porosity and permeability cutoffs of these reservoirs through methods of empirical statistics, oil-bearing occurrence test, physical property test, nuclear magnetic resonance, minimal pore throat radius and displacement pressure. The results show that the lower limit of porosity is 6 % and the lower limit of permeability is 0. 08 × 10 ^-3 μm^2 , providing basis for determining effective thickness and estimate reserves.

关 键 词：有效厚度 物性下限 特低孔 特低渗储层 永进油田 准噶尔盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]