Production Dynamicanalysis Method And Software Develop Of Tight Gas Reservoir

China's current proved gas reserve, the majority are low permeability gas reservior or low permeability gas reservoir, the geological reserves of which are more than 10000×10~8 m~3 .Dynamic analysis of low permeability gas reservoirs is the core work for such reservoir's exploration, and it runs through the entire gas reservoir engineering research and development management of field, and it covers a relatively wide range of content which is very rich in a number of analytical methods. Understand and analyze the tight gas reservoirs, the exploitation of gas dy namics, to study the dynamic characteristics, low permeability tight gas reservoirs is the understanding of the main work. Both for the tight gas reservoir development forecast, or the preparation of development programs, dynamic analysis is very important to the basic work. Only in-depth understanding of the low permeability tight gas reservoirs of the dynamic changes of in order to deepen the understanding of low permeability tight gas reservoirs, to determine the most reasonable of the mining plan, and the preparation of feasibility of gas production planning, and finally the low permeability tight gas reservoirs exploration and development to a virtuous cycle.This paper introduces briefly research generalization home and abroad on the development of low permeability gas reservoir, the test and theory's research present situation of low permeability gas reservoir infiltrating fluid and the key techniques of developing low permeability gas reservoir. And then this paper also briefly elaborates gas reservoir and gas well production dynamic forecast method. Besides, this paper introduces an improved method for production decline analyse using the basic theory for well test and builds an dynamic analysis method for the present production, which can produce typical plate decline curve and compute the reservoir permeability, skin factor, radius of well control and the gas in place under the condition of no-shut in well. The basic theory of dynamic well test is to analysis the prodution datas, and calculate the reservoir permeability, skin factor, radius of well control and reserves of well control using the technology of unstable well test theory and traditional production analysis, combined with the method of typical decline curve fitting. The method for dynamic prodution analysis including Arps,Fetkovich,Blasingame,Agarwal-Gardner,Normalized Pressure Integral and FMB, etc. This paper systematically explains the basic theory of these methods and their application conditions, and the author analysis the dynamic production of typical wells in a gas reservoir using the self-made software.