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。
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