英语翻译（结果）：结合实际,以外径50.8mm连续管为例,计算分析了二氧化碳在连续管和井筒内温度、压力、密度和相态随井深的变化情况.结果发现：连续管内二氧化碳温度随井深增大而迅速

英语翻译（结果）：结合实际,以外径50.8mm连续管为例,计算分析了二氧化碳在连续管和井筒内温度、压力、密度和相态随井深的变化情况.结果发现：连续管内二氧化碳温度随井深增大而迅速
英语翻译
（结果）：结合实际,以外径50.8mm连续管为例,计算分析了二氧化碳在连续管和井筒内温度、压力、密度和相态随井深的变化情况.结果发现：连续管内二氧化碳温度随井深增大而迅速上升,井深增至300m后,管内二氧化碳温度即与地层温度接近,其后与地层温度一起随井深同步增大,在裸眼段与地层温度相差最小；环空中二氧化碳的温度分布变化规律与连续管内相似,温度值略高于相同井深连续管内温度.连续管内二氧化碳密度在井口处最高,其后随着井深的增大,二氧化碳密度先急剧减小,达到一定井深后,减小幅度渐趋稳定,进入裸眼段后,减小幅度则略有增大；环空中二氧化碳密度变化规律与连续管内相似,但相同井深处,环空中二氧化碳密度值小于连续管内二氧化碳密度.连续管内压力随井深的增大而增大,但增幅逐渐减小；二氧化碳沿环空上返时,其压力不断降低,变化幅度较连续管内压力变化大,相同井深时,二氧化碳在环空中的压力则要小于连续管内；井口回压和钻头压降分别为6.27MPa和0.94MPa.进入井筒的液态二氧化碳,在井深450m处达到超临界态,并维持超临界态至井底；在环空上返段,二氧化碳温度和压力开始降低,井深450m处其相态由超临界态转变为液态,随井深减小,二氧化碳逐渐过渡到气液两相,直至返出井口.与路易斯安那州立大学的算例进行了对比分析.相同条件下,本文建立的模型计算显示,二氧化碳在572m时转变为超临界态,而已报道的结果显示临界井深为670m；二者存在差异的主要原因是,本文在建立传热模型时考虑了井下温度和压力的变化对二氧化碳传热效率的影响,而这与真实工况更为接近.

英语翻译（结果）：结合实际,以外径50.8mm连续管为例,计算分析了二氧化碳在连续管和井筒内温度、压力、密度和相态随井深的变化情况.结果发现：连续管内二氧化碳温度随井深增大而迅速
Combined with the actual,continuous tube outer diameter 50.8 mm,for example,calculation and analysis for carbon dioxide in continuous tube and wellbore temperature,pressure,density and phase behavior with the change of depth.It is found that continuous tube temperature increases with well depth and rapidly rising carbon dioxide,well depth increased to 300 m,the tube temperature of carbon dioxide and formation temperature is close to,then increases with well depth synchronization with formation temperature,in open hole section and formation temperature difference between the minimum; Ring carbon dioxide in the air temperature distribution in the changing law is similar to the continuous tube,temperature slightly higher than the same depth of continuous tube temperature.Continuous tube is greatest carbon dioxide density in the well's mouth,then with the increase of well depth,co2 density decreases sharply first,after reaching a certain depth,reduce the amplitude is stable,to enter.

( Results ) : with reality, to 50.8mm outside diameter coiled tubing , for example, calculation and analysis of the carbon dioxide in the coiled tubing and wellbore temperature , pressure, density and...

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( Results ) : with reality, to 50.8mm outside diameter coiled tubing , for example, calculation and analysis of the carbon dioxide in the coiled tubing and wellbore temperature , pressure, density and phase changes with depth situation. The results showed that : a continuous tube of carbon dioxide and temperature increases with depth increased rapidly after the depth to 300m, that is close to the temperature of the inner tube of carbon dioxide with the formation temperature , and subsequently synchronize together with the formation temperature increases with depth , in the openhole formation temperature difference with the minimum ; ring carbon dioxide in the air with a continuous variation of the temperature distribution inside the tube is similar to the same depth value is slightly higher than the temperature of the continuous tube temperature. Continuous pipe at the wellhead at the highest density of carbon dioxide and subsequently as depth increases, the density of carbon dioxide decreases sharply at first , after reaching a certain depth , reducing the amplitude stabilized, after entering the naked eye segment , reducing the amplitude increases slightly ; Central air carbon dioxide density variation and continuous tube is similar, but the same deep wells, Central air carbon dioxide density value is less than the density of carbon dioxide a continuous tube . Continuous pressure with depth of the tube increases, but the increase is gradually reduced ; along the annulus when the carbon back , constantly reducing the pressure change rate than in the continuous pipe pressure change , the same depth , the air pressure of carbon dioxide in the ring will have less than a continuous tube ; wellhead back pressure drop and drills were 6.27MPa and 0.94MPa. Liquid carbon dioxide into the wellbore , a supercritical state at the depth of 450m and to maintain the supercritical state to the bottom ; in the back section of the annulus , carbon dioxide, temperature, and pressure began to decrease depth of 450m at its supercritical state by a phase shift of liquid , with the depth decreases, a gradual transition to carbon dioxide gas-liquid two-phase , until the return of the wellhead . Louisiana State University and the study conducted a comparative analysis . Under the same conditions, the model established in this paper show that when the carbon dioxide into a supercritical state 572m , it reports the results show the critical depth of 670m; mainly the differences between the two is established in the article transfer model considers the downhole Effect of changes in temperature and pressure of the heat transfer efficiency of the carbon dioxide , which is much closer to the real conditions. Google翻译结果，自己慢慢完善，我一直这么做的，哈哈哈

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Combined with the actual, continuous tube outer diameter 50.8 mm, for example, calculation and analysis for carbon dioxide in continuous tube and wellbore temperature, pressure, density and phase beha...

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Combined with the actual, continuous tube outer diameter 50.8 mm, for example, calculation and analysis for carbon dioxide in continuous tube and wellbore temperature, pressure, density and phase behavior with the change of depth. It is found that continuous tube temperature increases with well depth and rapidly rising carbon dioxide, well depth increased to 300 m, the tube temperature of carbon dioxide and formation temperature is close to, then increases with well depth synchronization with formation temperature, in open hole section and formation temperature difference between the minimum; Ring carbon dioxide in the air temperature distribution in the changing law is similar to the continuous tube, temperature slightly higher than the same depth of continuous tube temperature. Continuous tube is greatest carbon dioxide density in the well's mouth, then with the increase of well depth, co2 density decreases sharply first, after reaching a certain depth, reduce the amplitude is stable, to enter.

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