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气井
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  gas well
A model of a gas well containing liquid is considered, the nature of the steady-state regimes is investigated, and the causes of cyclical output are analyzed.
      
Solar multi-spectral radiometric observations of atmospheric optical thickness over pasarlapudi gas well blow-out site in india
      
Multi-spectral observations of solar radiation using a Volz sun-photometer have been carried out during February 24-March 2, 1995 in the vicinity of the blow-out of the gas well at Pasarlapudi, Andhra Pradesh, India.
      
Investigating the thermal interaction between a gas well and permafrost soils
      
We present a method, a description of the algorithm, and the results from the calculation of the thermal fields about a gas well drilled through permafrost soil.
      
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Through a monographic study on the special well test problems related to the gas wells in tight reservoir with low permeability,some knowledges have been obtained:(1)The resistance of gas flowing through tight and low permeability reservoir is caused mainly by the hydration film at the small pore's throat;(2)only the pressure differential at the two sides of hydration film surface is high to a certain degree,can the gas break the resistance of hydration film and flow;(3)when the pressure gradient of the gas...

Through a monographic study on the special well test problems related to the gas wells in tight reservoir with low permeability,some knowledges have been obtained:(1)The resistance of gas flowing through tight and low permeability reservoir is caused mainly by the hydration film at the small pore's throat;(2)only the pressure differential at the two sides of hydration film surface is high to a certain degree,can the gas break the resistance of hydration film and flow;(3)when the pressure gradient of the gas during flowing is low to a certain degree,the hydration film forms again and flowing stops.Based on above mentioned knowledges,a well test model has been set up with aim and the analytical solution of the model is acquired by power series solution method.The algorithm study for calculating well test standard curve is done and the characteristic response and changing law of this special flow mechanism on well test curve are summed up.

通过对低渗透致密储层气井试井特殊问题的专题研究,形成了几点认识:①低渗透致密储层中气体渗流阻力主要是细小孔隙喉道处的水化膜造成的;②水化膜表面两侧压差大到一定程度时,气体才能冲破水化膜的阻力而流动;③气体流动过程中压力梯度小到一定程度时,水化膜又形成,流动停止。基于以上认识有针对性地建立了试井模型,用幂级数解法求出模型的解析解;就计算试井标准曲线问题作了算法研究,并总结了这种特殊渗流机理在试井曲线上的特征反映及变化规律

The well bore temperature distribution in condensate gas well is indispensable for the node analysis and performance analysis for gas well.Based on the heat transfer principle,the formula for calculating well bore temperature distribution in condensate gas well is presented,the method acquiring the basic data for the temperature calculation is discussed and the effect law of gas output,water output,well depth and tubing diameter on wellhead temperature is analyzed.The temperature in a certain condensate gas...

The well bore temperature distribution in condensate gas well is indispensable for the node analysis and performance analysis for gas well.Based on the heat transfer principle,the formula for calculating well bore temperature distribution in condensate gas well is presented,the method acquiring the basic data for the temperature calculation is discussed and the effect law of gas output,water output,well depth and tubing diameter on wellhead temperature is analyzed.The temperature in a certain condensate gas well with a depth of 5 400 m has been calculated.The gas oil ratio of this well is 3 000.The gas contains 2 3% H 2S and 4% N 2.The formation temperature is 134 ℃.Through calculation,it is shown that the relative error between the temperature measured at well head and that calculated is 0 2%~3 8%,being up to the engineering accuracy.The well temperature presents a nonlinear distribution with the depth and the well head temperature increases with the increase of the output and depth but decreases with the decrease of the tubing's diameter.This formula also applies to the calculation of temperature distribution in dry gas well,wet gas well and condensate gas well and the calculation precision accords with the demands of engineering accuracy.

凝析气井井筒温度分布是进行气井节点分析和动态分析必不可少的参数。根据传热学原理推出了凝析气井井筒温度分布计算公式,研究了温度计算基础数据求取方法,分析了产气量、产水量、井深及油管直径对井口温度的影响规律。对某一井深为5400m的凝析气井进行了计算,该气井气油比为3000,含23%的H2S和4%的N2;地层温度为134℃。计算结果表明:井口实测温度与计算温度的相对误差为02%~38%,符合工程精度。气井温度随井深不呈线性分布;气井井口温度随产量、井深增加而增加,随油管直径减少而减少;该公式同时适用于干气井、湿气井和凝析气井的温度分布计算,计算精度符合工程精度要求。

 
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