Dynamic Analysis Of Tight Water-producing Gas Reservoirs And Evaluation Of Water Production Impact In Western Sulige Area

With the gradual deepening of the development of the Sulige West District,low-yield and low-efficiency wells are increasing,gas well production is low,and general water production is urgently needed to carry out gas reservoir production index analysis,and a reasonable work system for water-producing gas wells and a reasonable production suitability for the actual production of high-water gas reservoir Work system to improve the final gas production of gas wells and the final recovery rate of gas fields,and effectively guide the efficient development of Sulige gas field.In this paper,aiming at the current problems and ultimate goal of the Suligexi District,based on the basic geological overview of the Susi region,the formation water characteristics and the distribution of gas and water in the area are studied,and 820 wells in the research area are classified according to gas production.Calculate and analyze the pressure parameters of the study area.The original formation of single well in the target block averages 30.37Mpa.The reserves of the study area are calculated and analyzed.The dynamic reserves of Su 47 and Su48 are 103.85×10~8m~3 and 97.89×10~8m~3,respectively.According to the unobstructed flow rate of gas wells,the productivity of gas wells is studied and analyzed.Perform formation pressure test,flow pressure test,liquid level test,gas-liquid two-phase metering test,production characteristic analysis,etc.for gas well water production,including the average proportion of wells with water production characteristics in the number of test wells 65%.And analyze the factors affecting water production,including formation physical properties,formation gas saturation,artificial transformation,and gas well production and other factors,give reasonable development suggestions,and use numerical simulation software for the production of three types of wells Single well mechanism model simulation,study and verify the impact of various factors on gas well production and gas well water production,comprehensively give a reasonable working system to reduce gas field water production and increase gas well gas production and final recovery rate.