The Study Of Gas Well Stable Technongical Countermeasures In Su-6Well Block

Sulige gas field in Su-6well block is a typical low-voltage, low-permeability sandstone gas reservoirs.It’s now in the middle and late stage of development, the production decline is more serious. In order to improve its development effectiveness and the ability to keep the gas well and stable production, it is necessary to investigate the stable technical countermeasures.This thesis focuses on the problem of pressure and production decline rapidly in Su-6well block gas well and some wells exist wellbore sffusion and the existing well network can not meet the requirements of stable. Use of reservoir engineering,with numerical simulation software.We study of the following content.First,on the basis of understanding the basic geological features of the Su-6well reservoir, by studying the gas well classification,analyzed the dynamics of the actual production of the Su-6different types of typical gas well; Secondly,based on the analysis of the influencing factors on gas well, the wellbore effusion on Su-6well block gas well have been studied; Finally, combined with Su-6well block of numerical simulation, demonstrated the scale of production of the Su-6wells existing well network design, pointed out its problems, and on this basis, a series makes the Su-6well block to the stable of technical countermeasures.Through the research,the paper reached the following conclusions.The sand bodies of Su-6well block is north-south trending and the good correspondence between microfacies.The main layer he-8’s physical properties is better than shan-1.The whole reservoir is a strong hetergeneity. Gas well is divided into three categories according to the standard.The pressure and product decline rapidly in the production process. Some wells exist effusion.Through the preferred diameter enables gas well for carrying liquid production.The existing well network in Su-6can’t achieve stable requirements.It’s necessary to adopt measures such as supercharged production mode,the well network encryption and adjustment,single well to optimize production, optimize the gas production. Through this research,we obtained for the actual situation of Su-6well block of stable production technology countermeasures. Which have a good practical significance for the guidance of the Su-6Well block gas well to maintain a reasonable stable.