Therefore, the common-used velocity analysis method is no longer used and new velocity analysis method is needed when carrying out velocity analysis.
因此在进行速度分析时不能使用常规速度分析方法，而必须使用新的速度分析方法。
2
When gas flow velocity in a wellbore is less than a critical gas flow velocity maintaining continuous flowing back in a gas well, a liquid carrying phenomenon occurs in the gas well.
当井筒内气流速度低于维持气井连续排液的临界气流速度时，气井出现携液现象。
3
In aspects of heap carrying to prepare to press construction, relevant technique norm provision can pass generally level moves with sink to decline to prognosticate control to add the velocity.