When superposing neutron porosity log with density porosity log, density porosity is far higher than neutron porosity.
当中子孔隙度与密度孔隙度曲线重叠时，会有密度孔隙度远高于中子孔隙度的特征；
Neutron log is an important means for providing porosity and lithology information.
中子测井是提供地层孔隙度和岩性信息的重要手段。
But it will fail to recognize the gas bearing bed buried deeper by the two methods as its porosity log feature is not obvious, especially when density porosity is lower than neutron porosity.
但是，对埋藏较深的气层而言，由于其孔隙度曲线特征并不明显，故用常规方法识别十分困难，特别是当密度孔隙低于中子孔隙度时，上述两方法识别气层均失败。
The application in Henan Oilfield shows excellent advantages in the aspects of computation of porosity, identification of lithology as well as casing hole compensated neutron log.
仪器在河南油田得到广泛应用，在孔隙度计算，岩性识别及套后中子测试等方面均取得良好的应用效果。
Different porosity reading on the neutron porosity log for the same formation due to gas in the pore space.
由于孔隙空间存在着气体，同一地层的中子孔隙度测井和密度孔隙度读数不同。
The log is made from resistivity, density, neutron, and sonic log data and shows porosity, secondary porosity, grain density, fluid analysis, water saturation, and formation analysis.
其资料来源于电阻率测井、密度测井、中子测井和声波测井。计算结果包括孔隙度、次生孔隙度、颗粒密度、流体分析、含水饱和度以及地层分析。
The neutron porosity log reads low, whereas the density log reads high and relatively accurately.
中子孔隙度的读数低；而密度孔隙度的读数高，且相对而言较为准确。
The difference of the porosity-calculated from sonic log and from neutron log is related to the effect of CO2 in gas-bearing beds.
用声波时差计算总孔隙度中t与计算出的中子孔隙度中。 对比，其差值就是CO：的影响所致。
The difference of the porosity-calculated from sonic log and from neutron log is related to the effect of CO2 in gas-bearing beds.
用声波时差计算总孔隙度中t与计算出的中子孔隙度中。 对比，其差值就是CO：的影响所致。
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