The pressure gradient, as one of the most important parameters affecting design and operation of gas-lift wells, is the foundation of gas-liftwell design.
压力梯度是气举井设计的基本依据，是影响气举井设计和运行的重要参数。
2
Aim To resolve the influence of pressure gradient, liquid hold-up and mixture density of the different flow model on the design and operation of gas-liftwell in oil recovery.
目的解决深井气举采油过程中不同流动型态的压力梯度、持液率、混合物密度对气举井设计和运行影响的问题。
3
Weak consumption during the global upswing was down to low real-wage growth, as well as caution: falling inflation should lift real income and spending.