Moreover, it has a very high perforation density, so that a small surface area is sufficient for effective measurement.
此外，它具有非常高的孔眼密度，以便小的表面区域就足够用于有效测量。
Perforation density and orientation angles are the most important factors of all to affect formation fracturing pressure.
主要结论包括射孔密度和射孔方位角是影响地层破裂压力的主要因素。
The results of calculation and test show that the strength of casing reduces along with the perforation density increases.
计算和试验结果都表明，射孔后套管的极限承载能力均有不同程度的下降，下降幅度与射孔密度有关。
The technology uses deep penetration perforation charge with high perforation density and large perforation diameter and surging perforation with greater pressure differential.
它采用高孔密大孔径深穿透射孔弹和大压差抽吸炮眼清洗技术，不仅能提高油井产能，解除近井带污染，还可以改善防砂完井效果。
The minimum injection rate of gravel pack increases while increasing the diameter of perforation tune, the perforation density, the perforated thickness and the critical velocity.
射孔密度、射开厚度、孔眼直径及临界流速增加时，砾石充填最小排量也增加。
Protection against impacts and perforation is ensured by a shell in carbon fibers and aramid, and by an expanded polystyrene inner padding with high density.
保护措施预防撞击和贯穿是用碳纤维和聚芳族胺，和透过高密度扩大的聚苯乙烯制成的垫塞。
The relationships among perforation diameter, density, phase and casing strength are clarified.
明确了射孔直径、密度及相位等与套管强度的关系。
The flow rate, perforation radius and shot density are the key parameters influencing the pressure drop across gravel pack.
分析结果还表明，油井产量以及射孔孔径和孔密度是影响砾石层压降的重要因素。
Based on the analysis of the perforation applicability, sand production mechanism of formations, and sand control methods in production, a new method of sand control using high shot density was given.
对射孔器和射孔器适用性，地层出砂机理以及目前现场使用的各种防砂方式进行分析，提出了利用高孔密射孔进行防砂的思路。
This conclusion lays a foundation for the research to variable density perforation in well completion optimization.
该结论为完井优化中的变密度射孔研究奠定了基础。
The shot diameter, shot density and shot phasing related to the collapsing strength coefficient are analyzed, and the result is helpful to the perforation optimum design.
利用推导的抗挤强度系数理论公式分析孔径、孔密及相位角的变化对其抗挤强度系数的影响，其结果为优化射孔设计提供了简便的方法。
The shot diameter, shot density and shot phasing related to the collapsing strength coefficient are analyzed, and the result is helpful to the perforation optimum design.
利用推导的抗挤强度系数理论公式分析孔径、孔密及相位角的变化对其抗挤强度系数的影响，其结果为优化射孔设计提供了简便的方法。
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