submergence depth meaning in English

沉没度
下沉深度
下潜深度

The statistics on the measured data in a oil - field shows the submergence depth and discharge coefficient are very low , some key measures for improving discharge coefficient and sucker rod pump performance are presented ; the applications of discharge coefficient to practice are illustrated with examples
通过对某具体油田区块测试数据分析，指出该区块油井存在沉没度、排量系数低的现象，提出了提高抽油泵排量系数、改善工作性能的措施。举例说明了排量系数计算在生产管理中的应用。
The model of variability of submergence depth is established based on the law of volume balance , and the changing trends of parameters like submergence depth etc are analyzed . according to the principle of supply and discharge balance , the method to predict oil yield is presented . subject to different objective functions , the corresponding optimum combinations of suction parameters are analyzed , and the importance of choosing objective function to optimum combination of suction parameters is emphasized
本文研究了油井流入动态关系，根据井筒内液量平衡原理，建立了沉没度变化的数学模型，分析了沉没度等参数变化规律；根据油井供、排平衡原则，得出了抽油泵排量系数相对稳定状态下产量预测的关系；分析了不同目标函数下，油井抽汲参数的组合效果，指出了目标函数选取对参数合理组合的重要性。