CAJ | 학술논문

水平气井较直井更难于连续携液，为了研究水平气井连续携液问题，利用可视化水平井气水两相井筒管流模拟实验装置（垂直段6 m，水平段10 m，倾斜段6 m）模拟水平井气液两相流动，对比观测直井段、倾斜井段、水平井段的流动型态。实验表明：水平井三井段中，倾斜管段的携液能力最差，所需临界携液流速最大，可将其作为水平气井的临界携液流速。倾斜管临界携液流量预测模型中，液滴模型和液膜模型是目前被普遍接受的两类模型。为研究倾斜管连续携液，实验观测不同倾斜角（28°～72°）条件下流型变化并测试临界携液流速。实验表明倾斜管段液体主要以液膜形式被携带，从携液机理分析，液膜模型也更为合理；通过实验测得的213组数据对液滴模型和液膜模型进行对比分析，发现液膜模型的平均百分误差、平均绝对百分误差及相对性能系数均较小，从计算结果分析，液膜模型也更为合理。
수평기정교직정경난우련속휴액，위료연구수평기정련속휴액문제，이용가시화수평정기수량상정통관류모의실험장치（수직단6 m，수평단10 m，경사단6 m）모의수평정기액량상류동，대비관측직정단、경사정단、수평정단적류동형태。실험표명：수평정삼정단중，경사관단적휴액능력최차，소수림계휴액류속최대，가장기작위수평기정적림계휴액류속。경사관림계휴액류량예측모형중，액적모형화액막모형시목전피보편접수적량류모형。위연구경사관련속휴액，실험관측불동경사각（28°～72°）조건하류형변화병측시림계휴액류속。실험표명경사관단액체주요이액막형식피휴대，종휴액궤리분석，액막모형야경위합리；통과실험측득적213조수거대액적모형화액막모형진행대비분석，발현액막모형적평균백분오차、평균절대백분오차급상대성능계수균교소，종계산결과분석，액막모형야경위합리。
The continuous fluid removal of the horizontal gas well is more difficult than that of the vertical wells. To study the problem of the continuous fluid removal of the horizontal gas well,we have simulated the gas-liquid two phase flow of the horizontal gas well with the visual gas-liquid conduit flow experimental device. This device is made up of vertical tubes, which is six meter high,horizontal tubes at ten meters,inclined tubes at six meters long. Through experiments,we found that, among the vertical,horizontal and inclined tubes,the capability of liquid-carrying of inclined tubes is the worst. So,the critical liquid-carrying velocity of the inclined tubes can be used as the velocity of horizontal gas well. Droplet and film model of the inclined tubes are now widely accepted. We observed the phenomena of liquid-carrying and test the critical liquid-carrying velocity in different inclined angles,which are from 28° to 72° The experiments show that liquid in the inclined tubes is carried by film form,not droplet form. From the mechanism analysis,the film model is more reasonable. Contrast the test values with the calculated values of film and droplet model,we can also find that film model is more reasonable.