NMR评价低阻储集层岩石物性参数研究  

APPLYING NUCLEAR MAGNETIC RESONANCE FOR DETERMINING PETROPHYSICAL PROPERTIES OF LOW-RESISTIVITY RESERVOIRS

作　　者：胡俊[1] 

机构地区：[1]西南石油学院

出　　处：《天然气工业》2002年第5期39-41,共3页Natural Gas Industry

摘　　要：使用常规测井资料对一般储集层进行评价是十分有效的 ,但是要利用这些常规测井资料来准确地评价低阻油气储集层的岩石物理参数却十分困难。由于低阻油气储集层在常规测井资料上显示为水层特征 ,但开采出来有时却能得到油气 ,甚至是无水的油气 ,因此 ,很难用常规测井资料来准确地确定低阻储集层的含油气性质和全面评价低电阻率油气储集层。文章利用核磁共振测井 (NMR)来评价低阻储集层的岩石物性参数 (岩石类型、孔隙度、自由水以及束缚水等 ) ,实际结果表明 。The conventional logs are proven to be effective in assessing the ge neral reservoirs. However, it is still difficult to determine the petrophysical parameters for low resistivity reservoirs through those conventional logging da ta. The problem is that even though aquifer bed is shown from the conventional l ogging data, oil and gas will be produced eventually even without any water. The refore, in the case of low resistivity reservoirs, it is really hard to determi ne the petrophysical properties and have an overall assessment. Nuclear Magnetic Resonance (NMR) is utilized to determine the petrophysical properties for the l ow resistivity reservoirs including the rocks' types, porosity, free water and irreducible water and so on. NMR is proven by the actual results to be a new but effective and potential modern logging method of assessing the low resistivit y reservoirs.

关 键 词：NMR 评价 低阻储集层 岩石 物性参数 研究 核磁测井 电阻率异常 

分 类 号：P631.8[天文地球—地质矿产勘探]