从关井开始，以固定的时间间隔系列地增加流量。
Starting with a shut-in well, a series of increasing flow rates are run at fixed time intervals.
这些特殊形状的阀芯容许阀门从全开到全关均匀地控制液体流量。
The peculiar shapes of these valve-plugs permit the valve to control the flowing liquid uniformly from fully opened to fully closed.
通过非结构网络，把井眼看作一个网格块，推导出了能反映开、关井后地层渗流量变化的用于求解单相流试井问题的差分模型。
Then a differential model, which discribes the changes of sandface flow rate under pressure drawdown and buildup is derived. The rate model is used to solve the question …
电动阀阀的开度可以控制，状态有开、关、半开半关，可以控制管道中介质的流量而电磁阀达不到这个要求。
Electric valve to control the opening, the state has to open, clearance, half-open half-clearance, you can control the flow of media channels and the solenoid valve able to meet this requirement.
电磁阀是快开和快关的，一般用在小流量和小压力，要求开关频率大的地方电动阀反之。
Solenoid valve is open and fast speed, and tends to be used in a small volume and small pressure to the switching frequency of the local electric valve big contrast.
一旦出现溢流就会出现溢流量大，溢流速度快，关井压力高等特点，严重的可能最终导致井喷或井喷失控。
While these Wells begin to overflow, Those rapid overflow speed and high pressure shut-in, or serious blow-out or a blowout could ultimately lead to loss of control.
一旦出现溢流就会出现溢流量大，溢流速度快，关井压力高等特点，严重的可能最终导致井喷或井喷失控。
While these Wells begin to overflow, Those rapid overflow speed and high pressure shut-in, or serious blow-out or a blowout could ultimately lead to loss of control.
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