It is theoretically considered that reservoir gas-bearing makes interval transit time porosity and density porosity increase and neutron porosity decrease.
理论上认为，储层含气使声波时差孔隙度和密度孔隙度增大，使中子孔隙度减少。
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 influence of porosity in oil bearing material on oil extraction is described.
本文主要描述了物料的多孔性对油脂制取的影响。
The oil-bearing formation of Yan 2 block of Benbutu oil field is Jurassic Sangong River group, which is low porosity and low permeability.
本布图油田投入开发的焉2区块，含油层位为侏罗系三工河组，属低孔低渗储层。
To certain extent, therefore, the thickness of the oil-bearing interval as well as the volume and permeability of the fracture porosity are also influenced by principal curvatures.
因而油层厚度及与之有关的裂缝孔隙体积和渗透率也在一定程度上受到构造面主曲率的影响。
The porosity and permeability of coal-bearing strata have important influence to the exhaust and mining of coal bed gas, but the production of coal bed gas is precondition of its richen.
煤系地层孔隙性和渗透率对煤层气的抽放、排采具有重要影响，但煤层气的生成却是其富集的先决条件。
Oil saturation is one of the important parameters to evaluate fluid property and oil-bearing occurrence in a reservoir, which is mainly calculated by geochemical pyrolysis value, porosity and so on.
含油饱和度是评价储层流体性质及含油性的重要参数之一，含油饱和度的求取主要是靠地化热解值、 孔隙度等参数。
NMR Logging can provide accurate values of irreducible liquid, movable liquid, effective porosity and permeability, and also identify the tight zone, water zone and gas-bearing zone.
核磁共振测井可以准确地提供地层的自由流体体积和束缚流体体积、有效孔隙度及其渗透率，能较好地判断干层、水层及气层。
Nuclear magnetic logging is a high technology and only by which the free fluid porosity of an oil-bearing bed can be measured directly.
核磁测井是当代唯一能够直接测量油层自由流体孔隙度的高技术。
The oil-bearing condition of reservoir is mainly controlled by permeability when porosity is high to 10%.
当孔隙度大于10%时，储层的含油性受渗透率控制。
The reservoir space of oil bearing sandstone is mainly secondary porosity and it's a pore type reservoir and its lateral variation is governed by the depositional and diagenetic process.
油层的储集空间以次生溶蚀孔隙为主，属孔隙型储集类型。储层受沉积、成岩变化控制，引起物性横向变化。
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。
Statistic data shows that the porosity increased a little with 0.58% of the average change rate after long-term water flooding in every-type of oil-bearing reservoirs in Lamadian oilfield.
统计资料表明，喇嘛甸油田各类油层，长期注水冲刷后，孔隙度值略有增加，但变化率不大，平均只有0.58%。
Statistic data shows that the porosity increased a little with 0.58% of the average change rate after long-term water flooding in every-type of oil-bearing reservoirs in Lamadian oilfield.
统计资料表明，喇嘛甸油田各类油层，长期注水冲刷后，孔隙度值略有增加，但变化率不大，平均只有0.58%。
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