Reasonable production allocation of gas wells is a subject that has been explored in gas well
development, but it is far from being solved. Due to different geological conditions
(fractures, bedrock, karst caves, etc.), well completion methods (perforation, fracturing,
etc.), edge and bottom water positions and quantities of different gas fields, the
production allocation methods are also different. For example, Moxi Longwangmiao is a
fracture-cave gas reservoir, Kela 2 gas field is a pore reservoir, and Dina is a fracture
pore reservoir. Large gas fields such as Sinopec Chuanke and Yuanba are typical marine
deposits with deep reservoir burial. They are reservoirs containing natural fractures. High
gas production can be obtained through acid fracturing.
Due to the difference of formation conditions of Longwangmiao, Kela and Chuanke gas
reservoirs, the flow patterns of gas reservoirs are also different, and the seepage models
relied on for large-scale calculation and analysis such as well test data interpretation,
production data analysis and numerical simulation are also different. Therefore, it is
difficult to form a production allocation model and standard, and to obtain a unified
formula for gas well production allocation. Even for complex geological structures and
development models, it is difficult to establish seepage mathematical equations (or solve
flow equations). Therefore, the project will conduct comprehensive research from four
aspects: gas well production allocation, theoretical formula, indoor experiment, equivalent
numerical simulation and big data, and strive to make a breakthrough in the basic theory of
gas well production allocation, so as to guide the development of large gas fields in China.
考虑水侵优势通道指数的气井合理配产方法研究：完成见水时间理论推导，敏感参数分析，初步完成大数据材料整理。