Optimum flowing pressure will bring maximum productivity of the oil wells in the low permeability oilfields. 在合理流压下,低渗透油田油井产能可得到最有效发挥。
Maximum sawing or filling thickness of work Permeability of Cutting Fluid in Minimum Quantity Lubrication Precision Turning 工件锯割或锉削最大厚度最小量润滑精密车削中切削液的渗透性
In the weak magnetic field, the value of μ of a long and thin sheet of permalloy that has the maximum magnetic permeability changes obviously with the weak change of the magnetic field. 磁导率μ极高的坡莫合金条,在微弱磁场中,μ值随磁场的微弱变化而明显改变。
When the angle between the discontinuity surface and the maximum principal permeability direction was big, the well should be located far from the discontinuity surface so that its control area and production rates can be increased. 当间断面与渗透率最大主方向夹角较大时,应适当加大井位到间断面的距离,以便增加单井的控制面积和产量;
The proton conductivity of the composite membrane reached the maximum of 0.17S/cm at 80 ℃ under 100% relative humidity. The methanol permeability of SPPEK/ PWA was more than 20 times lower than that of Nafion 117. SPPEK/PWA膜的质子导率100%的相对湿度下80℃时质子导率为0.17S/cm,室温甲醇渗透系数为1.02×10-7cm2/s,比Nafion117膜低20多倍。
After the failure of rock structures, the rocks give the permeability dramatically greater than that of elastic stage. The maximum permeability usually appears in softening stage, or sometimes appears in the end of flow stage. 岩石产生结构破坏后其渗透率远大于弹性阶段的渗透率,最高渗透率大多发生在软化阶段,少数发生在流动段末尾。
Meanwhile, it also explains the effect of W/ B ratio and the maximum probability of capillary radius action on the velocity of concrete permeability, and proposes the setting for the minimum W/ B ratio of concrete. 同时,阐述了水胶比与毛细孔最可几孔径尺寸对混凝土渗透速率的影响,并提出关于混凝土最小水胶比的设置建议。
The maximum water quantity becomes greater, the better is the filtering bed permeability, the higher the river hydraulic conductance, the higher the river level, the larger the water-collecting area and the bigger the distance between collecting pipes. 滤床的渗透性能越好,河床水力传导系数越高,河水水位越高,取水面积越大,取水管之间的间距越大,则最大取水量越大;
The maximum frictional coefficient of the membrane filter medium has a high permeability, and the surface is smooth. 复合滤布表面平整光滑,其最大静摩擦系数小于常规的机织滤布,且具有较高的透水能力。
The feasibility of accelerated chloride permeability test and the effect of w/ c ratio, incorporation of silica fume, maximum aggregate size and aggregate type on the chloride permeability were studied. 对快速测定混凝土Cl-渗透性可行性及w/c、硅灰、粗集料最大粒径对Cl-渗透性的影响进行了研究。
A porous TiAl intermetallics is fabricated using Ti and Al elemental powder by reactive sintering process, and the relationships between pressing pressure and porosity, maximum size as well as permeability coefficient are analysed. 以Ti、Al混合粉末为原料,通过反应烧结制备TiAl金属间化合物多孔过滤材料,分析压制压力对孔隙率、最大孔径及渗透系数的影响。
However, the decreased extent of the permeability will be enlarged. So, production index have a maximum with the drawdown on the condition of low permeability deformation reservoir. It afforded a reference for the deliverability optimization of low permeability reservoir. 3. 但渗透率的降低幅度也增大,采油指数随生产压差的变化曲线上存在一个最大值,这为低渗透油藏产能优化提供了理论参考。
Prediction of high permeability area was developed to use the coupling relationship between the orientation of maximum principal compression stress, differential stress magnitude of recent tectonic stress field and permeability in test hole. 利用现代构造应力场主应力差值及应力方向与试井渗透率之间的耦合关系,开展高渗区域预测。