根据烃与水的T_2差异确定含烃饱和度  

Determining Hydrocarbon Saturation According to T_2 Difference Between Hydrocarbon and Water

作　　者：何宗斌[1] 倪静 伍东[3] 郭丽香[3] 雷军[4] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学) [2]湖北荆州机械电子学校,湖北荆州434000 [3]辽河石油勘探局测井公司,辽宁盘锦124011 [4]塔里木油田公司西气东输项目经理部,新疆库尔勒841000

出　　处：《石油天然气学报》2007年第5期92-96,共5页Journal of Oil and Gas Technology

基　　金：国家"863"项目(2006AA06Z214);国家自然科学基金项目(40476030)

摘　　要：核磁共振测井在储层评价应用方面取得了很大的成功,油气的定性识别与定量评价一直是其重要的研究发展方向。烃与水在T2分布上通常具有对称与近似对称特性,经过推导,可以将多种特征成分驰豫简化成只有烃与水两种特征驰豫。利用烃与水的T2差异可以确定差分谱上烃的信号大小,经T1校正与含氢指数校正,可以得到地层的含烃孔隙度与含烃饱和度。将此方法应用到油水层与气水层的实际资料处理,流体类型识别和油气定量评价效果较好。NMR application in reservoir evaluation made a great success, and qualitative identification and quantitative evaluation of oil and gas have been an important research direction.T2 distributions of hydrocarbon and water were usually symmetrical or approximately symmetrical, multi-characteristic component relaxation could be simplified as characteristic relaxation of hydrocarbon and water by derivation.Signal of hydrocarbon in different spectra could be determined by the difference between hydrocarbon and water.Through calibration of T1 and H index, hydrocarbon porosity and saturation of formation could be obtained.Good effect is obtained for formation fluid identification and oil and gas quantitative evaluation when this method is applied in the oil and water wells and gas and water well of an oilfield.

关 键 词：核磁共振测井 纵向驰豫时间T1 横向驰豫时间T2 差分谱 流体识别 含烃饱和度 

分 类 号：P631.84[天文地球—地质矿产勘探]