It is a key factor in the response of a neutron porosity log.
含氢指数是中子孔隙度测井响应的主要参数。
Recognizing natural gas with convention log data mainly is based on 3 porosity log curves.
常规测井资料识别天然气主要依据的是三孔隙度测井曲线。
Identifying natural gas with conventional log data mainly is based on three porosity log curves.
常规测井资料识别天然气主要依据三孔隙度测井曲线。
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。
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。
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；
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。
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。
Calculation methods and formulae of porosity, permeability, shale content and oil saturation are given in the part of log interpretation.
测井解释中对孔隙度、渗透率、泥质含量和含油饱和度给出了计算方法和公式。
In Kuche area, the sandstone reservoir is characterized by low porosity, low permeability and high pressure, and pore texture is complex, so, it is very difficult for reservoir log evaluation.
库车地区砂岩储层以高压低孔隙度低渗透率为显著特征，且储层结构复杂，给储层测井评价带来很大困难。
On the basis of lithologic identification, the reservoir's porosity and permeability was calculated with multivariate statistics according to the log response of different rock composition.
在岩性识别的基础上，根据各类岩石成分的测井响应，利用多元统计方法，计算储层孔隙度、渗透率；
The variation of CHGR with depth is available from the calibration of the porosity, gas saturation of electric log interpretation of the reservoir and hydrocarbon gases expansion coefficient.
经储集层段测并解释孔隙度、含气饱和度及天然气膨胀系数等校正，可作出岩石含烃浓度随深度剖面变化的成果图。
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。
Log data may be used for calculating shaly capping beds parameters such as thickness, displacement pressure, total porosity, effective porosity, permeability, sand content, etc.
介绍了根据测井资料可综合评价泥质盖层的参数，包括厚度、排替压力、盖层总孔隙度、有效孔隙度、渗透率、含砂量等。
Nowdays, for the unitary lithology and moderate, high porosity conventional reservoir, the log interpretation and evaluation method is built.
目前，对于岩性单一、中高孔隙度的常规储层形成了较为成熟的测井解释和评价方法。
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 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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