Research And Application Of Foam Draining Gas Recovery Technology In Jilin Oilfield

With the development of the cause of natural gas,the development capabilities and levels of natural gas of Jilin oil field are improved continuously.At the same time,the difficulty of natural gas development is also increased ceaselessly.At present,we have ascertained 11 gas reservoirs in Jilin oilfield natural gas resources,they are distributed mainly in the Yingtai,Changling,Fulongquan,Xiaochengzi,Changchun.Through the analysis to production,there are edge water and bottom water in these blocks;After producing water,the gas well will reduce the gas recovery and affect on the production.Especially in the later period of gas well,Water production speed accelerates,which limits the capacity of gas well,leading to sharply shortening in stable time of gas reservoir.If we do not manage and control timely by means of drainage gas recovery,It will reduce the efficiency of gas reservoir recovery and overall development.And drainage gas recovery is effective solutions to solve the wellbore fluid and improve the gas reservoir recovery rate.And foam drainage gas recovery has become the main one in all sorts of drainage gas recovery technology because of its characters in simple construction process,low cost and quick effect.We study and analysis foam drainage gas recovery technical skill in solving bottom effusion production-increasing problems of gas well here.We analysed the applicability of foam drainage gas recovery oam drainage gas recovery technology mechanism according to the gas field characters of main block in Jilin oilfield,through indoor and field technology first,and then began with the analysis and study of f experiments,we developed UT-4,UT-6,UT-11D,UT-15,UT-8,TY-1,TY-2 and other different types of UT-11D,UT-15,UT-8,TY-1,TY-2 and other different types of water productiong gas well,on the basis of proper.understanding to geological condition of gas reservoir.At the same time,We improved water production gas well conditions of bottom effusion in different blocks through reasonable selection to the injection mode of foam drainage well in Jilin oilfield,the productivity of gas has been well recovered and obtained better drainage effect.The research achievement has a great effect on continuous removal of liquid and discharging the bottomhole liquid in water production gas wells.It is also more significent to the long-term development in water production gas field.