If the wellhead pressure exceeds that of the pipeline, then the gas can be passed through a choke or throttled in a constant-enthalpy Joule-Thomson expansion to provide cooling.
如果井口压力超过管道所需的压力，则可使气体通过节流件，以等焓焦耳-汤姆逊膨胀获取冷量。
In this paper, a numerical method to describe the distribution of pressure and temperature in the well bore with downhole-choke from wellhead to bottom was established.
对有井下节流装置的气井动态分析的研究，首次提出采用井口采集数据，从井口向井底计算井筒内的压力温度综合值的计算方法。
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