| The Member 2 of Upper Triassic Xujiahe Formation on Hechuan gas field, belongs to condensate gas reservoir with a few condensate oil, which has low porosity and permeability. The difference between the formation pressure and dew point pressure is very little. The producing test time of the gas reservoir is very long, the gas reservoir now is still during the early stage of development, the deliverability of the gas wells weren't clearly confirmed and the countermeasures on the prodution to the gas field need to be determined, so, it's very important to analyse the deliverability and get the countermeasures study on the prodution.This article chose Block Well HC1 on Hechuan gas field as research object. On the basis of the deliverability analysis, this article proposed the prodution countermeasures of the dissimilarity reservoir by using well test analysis, cluster analysis, multiple discriminant analysis, gas reservoir engineering, numerical simulation and so on.In order to make reservoir zonation have assured performance criterion, this article use many deliverability analysis methods to get the deliverability of the wells and compared the computational solution. Compared with the caculated results of conventional deliverability test, one point method was considered had some erros, but it could be used to approximately caculate the deliverability of gas wells. On the basis of the deliverability evaluation, formation conductivity and reserve coefficients are confirmed to be the main factors of the deliverability combined with the data of log interpretation.In order to make a pointed prodution to different reservoir, this article make the main factors of the deliverability and other parameters run the cluster analysis and multiple discriminant analysis and get three kinds of reservoir and corresponding multiple discriminant criterion. In order to get the better relationship between the deliverability analysis results and the kind of the reservoir, this article proposed the conception of the factor of the reservoir classification and calculated corresponding wells. The horizontal distribution of this 3 reservoir was comfirmed by the calculation of the deliverability and the factor of the reservoir classification. The horizontal distribution picture of this 3 reservoir will act as a important fundamental map to make a pointed prodution to different reservoir.Now, the fluid of some wells on Hechuan gas field had passed the phase state experimental study, including the measurement of the fluid component, the constant volume depletion and constant composition expansion. On the basis of the research of the phase state experiment, this article get the model of the fluid and corresponding parameter, used by compositional model, by using component chopping technique. According to the model of the depletion model, dry gas recycled model and N2 iniected model, this article ascertained the depletion development mode is the better one for this gas reservoir.With regard to dry gas wells or gas wells producing a little water, production strategy to the three kinds of reservoir was proposed according to the classification criterion to the three kinds of reservoir and multiple calulating methods. The corresponding reasonable production and well spacing density to the three kinds of reservoir were calculated by using the method of economic limit evaluation and numerical simulation. With regard to gas wells producing water, the minimum production carrying water was calculated by using the method of the critical liquid-carrying capacity. With regard to gas wells have bottom aquifer, the critical production to avoid bottom water coning was calculated. Finally, the abandonment pressure of the gas field was calculated by using multi- empirical method.According to the article, the deliverability of this block and production strategy to the three kinds of reservoir were clearly understood, which will provide reliable criteria to adjust development plans.
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