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1)  hole arrangement parameters
布孔参数
1.
After the stope structure parameters, hole arrangement parameters, blasthole layout form, initiating mode and ore drawing mode of sublevel caving without sill pillar in Shenbu Copper Mine had been improved, ore loss and dilution ratio, unit consumption of explosive were reduced, production ability was increased, and good technico economical indexes were obtained.
深部铜矿无底柱分段崩落法采矿工艺中的采场结构参数、布孔参数、炮孔布置形式、起爆方式和放矿方式进行改进后 ,贫化率、损失率、采矿炸药单耗及生产能力等主要技术经济指标均有明显的改善和提高。
2)  perforation parameter
射孔参数
1.
Impact of perforation parameters on the flow efficiency of water injection wells;
射孔参数对注水井流动效率的影响
2.
By establishing the model of skin factor calculating for Perforation Gravel Pack technology, the influence of the perforation parameters such as the depth, diameter and density of perforated holes etc.
如果工艺和射孔参数选择得当,就可以使射孔对产层的伤害最小,否则将适得其反。
3.
Also the effects of the perforation parameters of hole depth,density,diameter,angle,perforating modes are discussed.
分析了文卫马地区不同类型油藏的储层性质———高渗透疏松砂岩油藏、裂缝性储集层、各向异性地层、低渗透储层、钻井与固井造成的损害带对射孔效率的影响,探讨了孔深、孔密、孔径、相位角、布孔格式等射孔参数对射孔效率的影响。
3)  pore parameter
孔隙参数
4)  perforation parameters
射孔参数
1.
Sectional optimization model of perforation parameters of horizontal well in heterogeneous reservoir
非均质油藏水平井射孔参数分段优化模型
2.
Hydraulic fracturing treatments of oil wells in petroleum industry are affected greatly by the perforation parameters selected.
射孔孔眼是沟通井筒和地层的通道,压裂施工中射孔参数的选择影响到施工效果。
3.
The optimization of perforation parameters and gravel packing parameters as well as the selection of gravel packing method .
经研究决定采用下套管注水泥固井并在射孔套管内进行井下砾石充填的完井方案,因此射孔参数及砾石充填参数的优化设计和砾石充填方式的优选是完井的核心。
5)  pore throat parameters
孔喉参数
6)  blind drilled parameter
盲孔参数
1.
It also discusses the influence of the cover material of blind drilled press roll on the blind drilled parameter and puts forward the suggestion on the technology improvement for the blind drilled parameter design.
讨论了盲孔压辊覆面层材料对盲孔参数的影响。
补充资料:布气临界开孔率
分子式:
CAS号:

性质:均匀分布流体的分布板的最小开孔率,也是区分高压降分布板和低压降分布板的标志。郭慕孙根据散式流态化的理论和高压降分布板的概念,导得分布板的临界开孔率式中,流量系数c=0.99[d0/t)-0.125;L为床高;g为重力加速度;u为表观线速;ρf为流体密度;△ρ为颗粒与流体的密度差;d0为分布板孔径;亡为分布板厚度,对于具有散式特征的某些细粒流化床;n=4.65;εmf=0.4。

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