Numerical Simulation on Cavitation of Throttle in Tube;
管道节流过程中气蚀的数值模拟
1 natural gas process plant in Kela 2 field used the throttle method to eliminate the water and heavy hydrocarbons in the natural gas.
克拉2气田第一气体处理厂采用节流法脱水脱烃,注入乙二醇防止水合物的形成,控制天然气的水露点和烃露点,达到管输天然气的技术要求。
Downhole throttling technology is to adjust downhole pressure through installing the throttle valve in an appropriate position on the tube.
气井井下节流工艺将节流器安装于油管的适当位置来实现井下调压,能充分利用地热对节流后的天然气加热,从而改变天然气水合物的生成条件,对于防止水合物生成起到了积极的作用。
To completely solve the problem, two set of heat exchange, throttling, low temperature separation (LTS) units are built on the general Yulin gas plant.
为彻底解决该问题,先后在榆总站建设了两套大面积换热、节流、低温分离工艺装置,并在现场进行了工业性试验。
To solve this problem,this paper introduced a kind of double-throttling choke,and also built up its designing model.
安装一个节流油嘴存在的最大弊端是节流前后压差很大,造成节流油嘴密封部件很容易失效,这就是目前井下节流仅在浅井中得到广泛应用,而在中深井中应用受到限制的原因之一。
Direct throttling expansion refrigeration is an ordinary low temperature separation method, which can be used to recover light hydrocarbon.
直接节流膨胀制冷工艺是轻烃回收用低温分离方法中最常见的一种,要求天然气必须有较大的可利用压能和压差。
This paper analyzed the effect of downhole choke on pressure and temperature, finding that the downhole choke can prevent hydrate forming, improve liquid carrying capacity of the gas and relieve bottomhole pressure surges under low production rates.
为此,分析了井下节流器对压力、温度的影响,发现井下节流器能够在低产气量下起到防止水合物产生、提高提高气体携液能力、减缓井底压力激动等作用。
Flow state parameters, in particular, critical pressure ratio, are essential in design and calculation of gas well downhole chokes, determining flow state in the choke and in guarantee of steady production of a gas well.
临界状态参数,尤其是临界压力比,这是天然气井下节流嘴设计计算以及判断节流嘴内是否达到临界流动,能否实现气井稳产的关键数据。
Based on the discussion of nozzle and pipelines choke characteristic, the differences are compared and analyzed.
讨论了气嘴节流和管道内绝热节流流动的特点,对两者进行了比较和分析,并计算得到了天然气绝热节流工程中温度随压力的变化曲线,得出在高压下天然气节流同样会产生温升效应。
In order to do college`s financial management well,build up college`s scientific financial concept,the author Will give some advice on how to handle the coffers,how to raise money through various channels and how to broaden the sources of income and economize the expenditures.
文章对做好学校财务管理工作,树立科学的财务管理理念,学校资金的运用,以及多渠道筹资和“开源”“节流”等问题进行了分析和探讨。