Sub Continent Field Horizontal Well Production Capacity And The Dynamic Reserves Forecast Method Research

According to the characteristics of low permeability gas reservoir’s development. Based on the theory of gas flowing. With zizhou gas field horizontal well as the research object. With zizhou gas field horizontal well’s capacity and dynamic reserves prediction method as the research target. For low permeability gas field of horizontal well percolation mechanism. productivity prediction model and capacity’s impact factors. The dynamic reserves prediction are analyzed. based on low permeability gas reservoirs of horizontal well(conventional and fracturing) productivity prediction method’s research. Derived the suitable for low permeability gas reservoirs of horizontal well(conventional and fracturing) productivity prediction model. The existing low permeability gas reserves conventional production forecasting formulas in horizontal well (conventional and fracturing) adaptability analysis. The evaluation of low permeability reservoir (conventional and fracturing) horizontal well productivity impact factors, Stress sensitive index and start-up pressure gradient have an influence on the capacity. Heterogeneity coefficient is also too. Eccentricity’s influence is small. The fracturing horizontal well of low permeability gas reservoirs has the best fissure number. the best half of fissure length range and the best horizontal section length. Compiled the low permeability reservoirs of horizontal well productivity prediction applications and was applied to the site by using the Visual Basic language. The calculation results show that the study is reliable. Through the examples coMParison that the evaluation of production forecasting formulas established the results more accord with the zizhou gas field to the actual situation of horizontal wells.Has the application value.Based on low permeability gas reservoir’s dynamic reserves prediction’s research. Through the horizontal wells of zizhou gas field case analysis. The elastic two-phase method. Try gather together method is more suitable for prediction the dynamic reserves in low permeability gas field of horizontal well.