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rich gas condensate
相关语句
  富凝析气
     NEAR-CRITICAL PHENOMENAL OF RICH GAS CONDENSATE SYSTEMS:AN EXPERIMENTAL INVESTIGATION
     富凝析气近临界特征的试验研究
短句来源
     For rich gas condensate reservoirs, due to the component exchange between the injection gas and the condensed liquid, the re-vaporization is obvious. The tests show that the lean gas can vaporize the intermediate as well as the heavier fraction such as C_(20+).
     富凝析气藏常常采用注气开发 ,注入气体与原始凝析气藏流体进行组分交换 ,使凝析油在地下蒸发现象明显 ,注入干气不仅能蒸发凝析油中的中间烃类 ,而且也能蒸发C2 0 + 以上的重烃。
短句来源
  “rich gas condensate”译为未确定词的双语例句
     The average porosity and permeability of reservoir are 0.1073 and 0.0527 μm 2 respectively. The fluid is a rich gas condensate with maximum liquid dropout up to 22%.
     储集层平均渗透率和孔隙度分别为0.0527μm2 和0 .1073,凝析气流体富含凝析油,最大反凝析液量约为22% 。
短句来源
     The partial pressure maintenance is used to develop the Yaha rich gas condensate reservoir in Tarim Oilfield.
     压力直接影响到气藏的开发效果及动态分析,因此运用测试不准确的地层压力将会大大影响开发效果评价及动态分析。
短句来源
     Rich gas condensate reservoir is strongly affected by adsorption,and the increase degree of dew point is high.
     富含凝析油的凝析气藏受吸附作用的影响较强,露点值升高的幅度相对较大;
短句来源
  相似匹配句对
     Rich.
     Rich.
短句来源
     Rich gas treatment and pipeline transportation
     富气处理和输送工艺技术
短句来源
     The Transportation Technology of Rich Gas Pipelining
     管道的富气输送工艺
短句来源
     rich life
     一个民营企业家的财富人生——解读《走近南存辉》
短句来源
     Gas Bearings
     气轴承
短句来源
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This paper is dedicated to study the effect of low interfacial tension on the mobility of condensate near wellbore through the compositional simulator mimicking constant volume depletion of a true gas condensate reservoir. The average porosity and permeability of reservoir are 0.1073 and 0.0527 μm 2 respectively. The fluid is a rich gas condensate with maximum liquid dropout up to 22%. Although the interfacial tension of synthetic oil and gas is usually several tens higher than that of gas...

This paper is dedicated to study the effect of low interfacial tension on the mobility of condensate near wellbore through the compositional simulator mimicking constant volume depletion of a true gas condensate reservoir. The average porosity and permeability of reservoir are 0.1073 and 0.0527 μm 2 respectively. The fluid is a rich gas condensate with maximum liquid dropout up to 22%. Although the interfacial tension of synthetic oil and gas is usually several tens higher than that of gas condensate, often are the regular relative permeabilities to synthetic oil and gas used to simulate the gas condensate reservoir. Low interfacial tension may change the relative permeabilities to gas and condensate, so the regular relative permeabilities are corrected in the simulation according to an empirical formula. After correction the relative permeabilities become greater, especially for condensate. The dynamic performance of condensate is analyzed through three cases such as condensate saturation near wellbore, production rate per day and cumulative condensate production. The results show that at early stage condensate builds near wellbore rapidly up to a maximum saturation, and then become less gradually with time. The comparison of performance made with and without correction show that the production rate per day and cumulative production of condensate are greater after correction and much less condensate builds up near wellbore, because of the improvement of low interfacial tension on mobility of condensate. The results also clearly demonstrate that the proper description of relative permeabilities to gas and condensate is vital for prediction of performance at gas condensate reservoir condition

通过组分模型模拟实际凝析气藏恒容衰竭过程,研究在低界面张力作用下近井区域凝析油的流动性。储集层平均渗透率和孔隙度分别为0.0527μm2 和0 .1073,凝析气流体富含凝析油,最大反凝析液量约为22% 。尽管模拟油气的界面张力常常比实际凝析油气高数十倍,但预测凝析气藏动态时仍常常采用从模拟油气测得的相对渗透率。由于低界面张力会明显影响油气相对渗透率,因此,对模拟油气相对渗透率进行了校正。校正后油气相对渗透率增大,特别是凝析油的相对渗透率明显增加。通过近井区域凝析油饱和度、日产油量、累积产油量随生产时间的变化分析了凝析油的动态特征。结果表明,在生产初期,近井地带凝析油迅速积聚,很快达到最大饱和度,并随井继续生产而逐渐减小。分析相对渗透率校正前、后的结果发现,由于凝析油气界面张力低改善了凝析油流动性,所以校正后近井区域凝析油饱和度大大低于校正前,且校正后日产油量、累积产油量均高于校正前。研究结果同时表明,正确的相对渗透率曲线对于描述凝析油气生产动态具有重要意义。

The petroleum exploration pushes the frontier to deeper strata with more near critical fluids.However,the documented studies on near critical behavior of complex fluids are scarce,especially the unsymmetrical multi component and real reservoir fluids.Thus the phase behavior of near critical systems has attracted considerable attention in recent years.This paper presents some experimental results of near critical phenomena of three rich gas condensate systems.The measurements are made with mercury free...

The petroleum exploration pushes the frontier to deeper strata with more near critical fluids.However,the documented studies on near critical behavior of complex fluids are scarce,especially the unsymmetrical multi component and real reservoir fluids.Thus the phase behavior of near critical systems has attracted considerable attention in recent years.This paper presents some experimental results of near critical phenomena of three rich gas condensate systems.The measurements are made with mercury free PVT equipment.The fluids used consist of one six component hydrocarbon mixture and two actual field samples.The presented results include the critical points,bubble & dew point locus,optical phenomena and unusual phase transitions in near critical region,etc.The percentage liquid volumes at several temperatures are recorded in detail for all fluids,and crossplotted to determine the critical points in pressure temperature phase diagram with no further efforts to determine experimentally the precise critical parameters due to the limitations of the PVT equipment.Instead of the opalescence previously reported on carbon dioxide,the reddish brown color is observed in near critical regimes for three fluids,this may be attributed to the complexities of the fluids.Comparison of the synthetic and real systems used in this study shows a large difference in the near critical phenomena. Surprisingly,the unusual phase phenomena are observed for the synthetic mixture and one field sample.That is,during the constant composition expansion process the dew point phase change occurs twice above the critical temperature,and correspondingly dew & bubble point phase changes occur sequentially below the critical temperature.In the later case,of special interest is that the fluid can not be clearly classified into gas or liquid according to the usual experimental classification of fluid types in PVT cell.In two cases,the first appeared fluid at the bottom of PVT cell first disappears at the same lower pressure with pressure decline,although the temperatures are different.To the best of our knowledge,it is for the first time reported that the unusual phenomena simultaneously occurring at high temperature of 100±℃.These observations throw new light on the near critical phenomena of a gas liquid system. The results presented herein are of high value from the theoretical and practical viewpoints,and may find wide applications in various fields such as reservoir fluid sampling,classification of fluid types,well testing,and the optimum of the profitable development strategies of gas field,etc.

本研究应用无汞 PVT相态实验装置测定了一个六组分烃类混合物和两个实际凝析气流体的监界点、近临界泡点和露点线 ,观察并记录了流体在近临界区的光学现象和异常的两次相变过程。在近临界区三种流体呈现红棕色 ,而不是文献所报导的二氧化碳的乳白色 ,这种区别可能是由于流体中含有较多的重质组分所致。实验发现富凝析气近监界光学现象与明确组分流体相比存在很大差异 ,即富凝析气在很宽的温度范围内均可观察到临界现象。此外 ,实验还发现六组分烃类流体和一个凝析气流体在温度高于临界温度时 ,恒质膨胀过程中发生两次反凝析露点变化 ,即露—露相变 ;在低于监界温度时也发生两次相变现象 ,即先出现露点后出现泡点 ,此时将很难区分原始流体是液体还是气体。据所掌握的资料看 ,本文是首次报道同一流体在温度高于 10 0℃时 ,同时出现两次异常相变现象

The liquid phase often condenses in the reservoir when the fluid pressure drops below the dew point pressure. The condensate often remains as an immobile phase in the porous media with low recovery because the saturation point of liquid condensate is usually less than that of the critical condensate and the mobility effect occurs due to larger viscosity of condensate. Due to the effect of phase equilibria, the reservoir fluid may exhibit one, or a combination, of the following three types of vaporization: ①...

The liquid phase often condenses in the reservoir when the fluid pressure drops below the dew point pressure. The condensate often remains as an immobile phase in the porous media with low recovery because the saturation point of liquid condensate is usually less than that of the critical condensate and the mobility effect occurs due to larger viscosity of condensate. Due to the effect of phase equilibria, the reservoir fluid may exhibit one, or a combination, of the following three types of vaporization: ① the re-vaporization of condensate, when the pressure is below the maximum condensation pressure, ② the equilibria revaporization due to the extraction effect of lean gas during gas injection, ③ the retrograde vaporization of condensate, when the reservoir pressure builds up as a result of more voids being replaced by injected gas. With pressure depletion, the liquid volume will be reduced continuously. For rich gas condensate reservoirs, due to the component exchange between the injection gas and the condensed liquid, the re-vaporization is obvious. The tests show that the lean gas can vaporize the intermediate as well as the heavier fraction such as C_(20+). In the natural reservoir, under the condition of high injection-production ratio, the composition of heavy components will increase and the heavy components can be extracted to the surface through partial vaporization.

凝析气藏开采到压力降到露点压力以后 ,会在储集层中产生液态凝析油 ,凝析油饱和度常小于临界凝析油饱和度 ,凝析油黏度大会产生流度差异效应 ,往往导致凝析油滞留在储集层中。由于相平衡效应 ,会产生 3种不同的凝析油蒸发动态情形 :①压力低于最大反凝析压力后的凝析油蒸发效应 ;②保持压力过程中的凝析油再蒸发效应 ;③注入流体使地层压力上升过程中的凝析油反蒸发效应。在降压开采过程中 ,液态凝析油体积逐渐减小 ,这主要是由于整个压力衰竭过程中平衡气相的中间组分和重组分含量越来越少 ,为了达到相态平衡 ,液相中的相应组分重新分配到气相中 ,从而出现凝析油的蒸发现象。富凝析气藏常常采用注气开发 ,注入气体与原始凝析气藏流体进行组分交换 ,使凝析油在地下蒸发现象明显 ,注入干气不仅能蒸发凝析油中的中间烃类 ,而且也能蒸发C2 0 + 以上的重烃。实际凝析气藏在高注采比条件下 ,产出凝析油中较重组分含量增加幅度较大 ,说明当凝析油析出后 ,通过注气提高地层压力 ,可以将反凝析的重组分部分反蒸发而采出。图 2表 1参 10

 
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