Clouds And Village Of Carboniferous Gas Reservoir Water Production Dynamic And Water Invasion Influence Analysis

At present, most of the gas reservoir in China’s natural gas resources belong to different levels of water-drive gas reservoir. The water-drive gas reservoir accounted for about65%in the developed gas reservoirs.Water invasion will seriously affect the development and production of the gas reservoir, and reduce the production of gas wells to reduce the gas reservoir recovery.Sichuan Basin gas reservoirs are buried deeply, and the cracks is developed, most of the reservoirs exist edge and bottom water, gas reservoir product water at great probability, or even likely to cause gas reservoir flooded.After water invasion developed, it has brought great harm to increase flood control costs, not conducive to improving the ultimate recovery of gas reservoirs. Therefore, it’s significant to research water identification method and calculation method of water influx, as well as evaluation of gas well production water on the production, adjustment of the gas reservoir development program, select a reasonable flood control measures, with a good guide.On the basis of the research of literature, this paper start from the air-water two-phase microscopic mechanism, discussed the water influx mechanism and it’s early identification in detail, water influx calculation as well as productivity evaluation of well in water producing gas reservoir, and using Visual Basic programming language preparation of the water producing wellbore pressure distribution program.On the analysis based on previous research results, this paper analyzes four gas reservoir water invasion quantity computation method, using the application of the curve fitting method, Yun He Zhai gas well water influx and water influx intensity,get the water production of gas well productivity formula,and contrast water production and no water production gas well IPR curve, obtain a better prediction effect, this paper research results for the Yun He Zhai Carboniferous gas reservoir and efficient development, and provide a solid theoretical basis, as well as be a certain reference to domestic gas reservoir.