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通过对比电阻率测井、介电常数测井、中子寿命测井与碳氧比能谱测井求取储层的饱和度测井方法,发现电阻率测井应用范围较广,储层孔隙度大于3%,充填孔隙的地层水的矿化度范围在20000～100000mg/l(NaCl)之间较好;介电常数测井对于低矿化度的水层识别有独到之处,特别是对于淡水水淹引起的高阻水淹层,对于矿化度较高的低阻油层介电常数测井也是较好的解决方法,储层孔隙度大于6%;中子寿命测井对地层水矿化度较高的储层更为使用;碳氧比能谱测井的使用范围是孔隙度大于15%,对于地层水矿化度较低(小于5000PPM)和未知矿化度水层或矿化度变化很大的储层较为使用,也可以用来识别低阻油层。
By comparing resistivity logging, dielectric constant logging, neutron lifetime logging and carbon / oxygen ratio logging to obtain reservoir saturation logging methods, it is found that resistivity logging has a wide range of applications and reservoir porosity The degree of salinity is greater than 3%, and the porosity of formation water ranges from 20000 to 100000 mg / l (NaCl). The logging of dielectric constant is unique to low salinity water level identification, especially For the high water blocking flooded layer caused by freshwater flooding, it is also a good solution to the low salinity resistivity dielectric logging with high salinity, reservoir porosity is more than 6% The more salinized reservoirs are more used; the use range of C / O logging is more than 15% porosity. For formations with low salinity (less than 5000PPM) and unknown salinity or water Reservoirs with widely varying degrees of chemical diversity are also used to identify low resistivity reservoirs.