摘要
依据岩心、化验分析和驱替实验等资料,对YJB油田下第三系阜一段和阜二段砂岩储层特征、非均质性、裂缝特征以及对开发效果和采收率的影响进行了分析。储层基本上属于强非均质性,裂缝以水平裂缝为主,主要是微裂缝和短缝,储层属亲水油藏,且阜一段比阜二段亲水性更强。由于两套层系储层特征上的差异,表现出的见水规律和开发效果不同。研究结果为油层改造、提高开发效果和提高最终采收率奠定了理论基础。
Influences of reservoir characteristics,heterogeneity,and crack characteristics on permeability and recovery factor are analyzed for the Paleogene E1f1 and E1f2 sandstone reservoirs in Yangjiaba Oilfield according to core,mercury injection and displacement data by methods of mathematical statistics and fractal geometry.The reservoir is basically a strong heterogeneity.The reservoir fractures,which are mainly micro-fractures and short fractures,are predominantly of natural horizontal fractures.The reservoir belonged to hydrophilic reservoir,and E1f1 is more hydrophilic than E1f2.Due to differences of reservoir characteristics for two strata,the water breakthrough and the development effects are different.The result of this study provides basis for reservoir stimulation and enhancing development efficiency and recovery factor.
出处
《复杂油气藏》
2010年第4期51-54,共4页
Complex Hydrocarbon Reservoirs
关键词
YJB油田
非均质性
裂缝
润湿性
开发效果
YJB Oilfield
heterogeneity
crack
wettability
development effect
