So choosing correct underbalance pressure differential is key factor for underbalance perforation design.
选取合适的负压值是负压设计的关键。
The perforation technology optimum and optimal design of the sand control tubular string provided scientific basis for perfecting and enhancing sand control technology in horizontal well.
水平井射孔工艺优选和防砂工艺管柱的优化设计，为完善和提高水平井防砂工艺提供了科学依据。
Finally, reservoir modeling technique is applied to optimize the design of perforation phase Angle according to the position of the perforation interval in the oil layer.
最后应用储层建模技术，依据射孔层段处于油层中的位置，优选设计射孔相位角。
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。
My design subject is DK7132 numerical control electrical-discharge perforation molding machining tool.
该设计课题是DK7132数控电火花穿孔成型加工机床。
The perforation technology optimum and optimal design of the sand control tubular string provided scientific basis for perfecting and enhan…
水平井射孔工艺优选和防砂工艺管柱的优化设计，为完善和提高水平井防砂工艺提供了科学依据。
This paper deals with the design, research and application of a kind of new technique on the big hole perforation in oil well and forming fissure in oil layer.
论述了一种大孔径射孔造逢新技术的设计、研究及应用 ，该技术特别适用于稠油常规开采。
The results of this study can offer some perforation plate and acoustic absorbing body design reference materials for the acoustic engineers and architects.
本文的研究结果可为声学工程师及建筑师提供穿孔板和吸声体设计的参考资料。
The perforation technology optimum and optimal design of the sand control tubular string provided scientific basis for perfecting and enhancing sand control technology in horizon...
水平井射孔工艺优选和防砂工艺管柱的优化设计，为完善和提高水平井防砂工艺提供了科学依据。
The perforation technology optimum and optimal design of the sand control tubular string provided scientific basis for perfecting and enhancing sand control technology in horizon...
水平井射孔工艺优选和防砂工艺管柱的优化设计，为完善和提高水平井防砂工艺提供了科学依据。
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