The test results show that the porosity of sandstone decrease with the increasing effective stress at the fixed temperature level, following the law of negative exponent.
试验结果表明，在温度水平一定的条件下，砂岩的孔隙度随有效应力的增加而呈负指数规律减小；
The porosity test for sandstone was conducted at various temperature level and various effective stress level.
在不同温度水平和不同有效应力水平下，进行了砂岩的孔隙度试验。
The influence of porosity on the effective diffusion coefficients was studied for 18 of Cubased catalysts, which have the different pore structure parameters.
研究了18种具有不同孔结构参数的铜基甲醇合成粒状催化剂孔隙率对有效扩散系数的影响。
The effective porosity and original gas saturation of gas reservoir are the important parameters in calculating gas reserves.
气层“两度”是指有效孔隙度与原始含气饱和度，它是计算天然气储量的重要参数。
The result shows that the nerve network method is quite effective in the classification and differentiation of loess porosity.
结果表明，神经网络方法性能良好，可望成为黄土孔隙性分类判别的有效辅助手段。
Taking Yongle Oilfield as an example, this paper gives an interpretation method of effective porosity parameters suitable for shale sandstone reservoir.
本文以永乐油田为例，提出了一种适合泥质砂岩储层的有效孔隙度参数解释方法。
It is found that the oil effective permeability of low middle porous sandstone is related with the porosity, water saturation and shale volume of formation.
研究发现，油的有效渗透率与中低孔隙性储层的孔隙度、含水饱和度及泥质含量有关。
The results showed that the fractal dimension is an effective index to quantitatively characterize the complexity of wood interior porosity during the drying process.
结果表明：木材内部孔隙度的分形维数是定量反映干燥过程中木材内部孔隙复杂程度新的有效指标。
For more highly cemented materials and limestones, significant difference in total porosity and effective porosity values may occur.
对于含泥浆较多的物质或石灰岩，其总孔隙度和有效孔隙度会有很大差别。
The better the pore structure of reservoir, the higher the tested productivity and the critical water saturation, the lower the correspondent cutoff of effective porosity.
储层孔隙结构越好，测试产能越高，临界水饱和度越高，其对应的有效孔隙度下限越低。
Compact rock formation formed a available reservoir with effective porosity and permeability because there are a many of fractures in it.
致密岩层中由于大量裂缝存在形成了具有有效孔隙度和渗透率的储层。
Research shows that effectiveness of reservoir with cavern relates to porosity and the type of cavern, and reservoir with big cavern is more effective than with little one.
研究认为，孔洞型储层有效性与孔隙度及孔洞类型有关，且大孔孔洞型储层较小孔孔洞型储层有效。
These three secondary porosity zones are effective reservoir Spaces.
这三个次生孔隙发育带对储集油气有效。
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。
First, an empirical relationship formula between the effective porosity and total porosity of cement paste is given based on the experimental results of concrete.
首先，根据混凝土的试验结果给出了水泥石有效孔隙率与总孔隙率关系的经验公式。
The results, show that the neural network method is good, and therefore it might be referred as an effective assistant technique for classification and recognition of loess porosity.
结果表明，神经网络方法性能良好，可望成为黄土孔隙性分类、判别的有效辅助手段。
The petrophysical lower limit values of an effective reservoir includes porosity, permeability and oil saturation.
有效储层的物性下限位主要包括储层孔隙度、渗透率和含油饱和度下限值。
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。
The corroboration of effective reservoir lower limit in reserves calculation respects parameters influence effective reservoir thickness, porosity and gas saturation directly.
在储量计算的有关参数中，有效储层下限的确定直接影响有效储层厚度、孔隙度和含气饱和度三个参数。
So the effective porosity is drawn from the matrix volume and effective pore volume.
然后由岩样的有效孔隙体积和骨架体积计算出岩样的有效孔隙度。
Effective porosity controls gas distribution, while fracture controls gas production rate.
有效孔隙控制了天然气的分布，裂缝控制了天然气的高产。
The influence of porosity of 18 kinds of Cu - based catalysts of methanol synthesis on the effective diffusion coefficients is studied. The catalysts have the different parameters of pore structure.
研究了18种具有不同孔结构参数的粒状铜基甲醇合成催化剂孔隙率对有效扩散系数的影响。
Through research it is shown that this method is an effective method of predicting oolitic beach reservoir porosity, being of important practical value.
研究结果表明，本方法是一套预测鲕滩储层孔隙度的有效方法，具有重要的实用价值。
The reflection coefficient of a solitary wave decreases as the effective porosity increases for a given permeability coefficient.
当渗透系数一定时，孤立波的反射系数随有效孔隙率的增大而减小；
The remnant intergranular pores were filled with this kind of late calcite cement, which leads to a great decrease of the effective porosity.
这种后期的方解石胶结物主要充填剩余粒间孔隙，使储层的有效孔隙度大大降低。
An improved method of measuring effective porosity of rock samples is presented.
提出了一种测定岩样有效孔隙度的方法。
CONCLUSION plasma concentrations of sodium ferulate porosity osmotic pump tablets are constant and effective plasma drug concent-ration is kept for a long time.
结论阿魏酸钠微孔渗透泵片血药浓度平稳，可较长时间保持血药浓度。
CONCLUSION plasma concentrations of sodium ferulate porosity osmotic pump tablets are constant and effective plasma drug concent-ration is kept for a long time.
结论阿魏酸钠微孔渗透泵片血药浓度平稳，可较长时间保持血药浓度。
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