Study On Reasonable Working System Of Condensate Gas Well

At present, the pressure of Anyue block condensate gas reservoir has fallen below the dew point pressure, most of the wells have retrograde condensate phenomenon, which has great negative influence on the efficient development of gas well, and resulting in the declining of the deliverability of gas well. In order to make a reasonable working system to guide the rational development of gas reservoir, establish a deliverability function for Y103 well using modified isochronal test, additional pressure drop and biphase pseudopressure after a large number of investigation and study of domestic and international research on the deliverability of condensate gas wellas well as production systems, the critical liquid carrying and reasonable production pressure. And compare the calculation results, analysising the effect of different factors on production capacity of gas well. the parameters required to calculate the two-phase pseudopressure is obtained by numerical simulation under different pressure according to experimental data.Combination of the actual condition of the Anyue block and Y103 well, using the wellbore dynamic analysis model for condensate gas well with high gas fluid ratio and the method of pesudo-single phase to calculate the pressure distribution in the wellbore. The Component model is also used to calculate the pressure distribution in the wellbore. Compare the results with the measured values, finding the suitable method for the actual mine production.The thumb rule, the gas production curve method,the critical liquid carrying as well as node analysis, combined with reasonable production pressure of gas well are used to predict the reasonable production of the gas well and find the scope of the reasonable yield. Then making a sensitivity analysis of the factors affecting gas production, mainly focus on the effect of formation pressure, wellhead pressure as well as the different tubing diameter on the production of gas well, Final optimization of production systems and related parameters, and then guide the actual production of the wells.