川东石炭系气藏气井产能早期预测模型

AN EARLY FORECAST MODEL OF GAS WELL DELIVERABILITY OF THE CARBONIFEROUS GAS RESERVOIRS IN EAST SICHUAN

研究了川东地区C2 hl气藏开采 2 0年全部投产井的静、动态资料 ,据气井的产能与地质参数和测井解释参数的关系的统计分析 ,提出了建立气井产能预测模型的技术思路和方法 ,建立了本区C2 hl气藏气井产能早期预测模型系统 ,完善和发展了碳酸盐岩裂缝—孔隙型气藏气井产能预测方法。该系统可以提供不同条件下新井在试采期及稳产期的产能 (即稳定产量的上限及下限 ) ,对于生产管理部门及决策者在选择开发井位、编制发展规划及地面工程预算有指导意义。

The static and dynamic data of all the gas producing wells in the C 2 h 1 gas reservoirs,which have been put into production for 20 years,in East Sichuan have been studied in the paper.According to the correlation analysis of the gas well deliverability with the geological parameters and log interpreted parameters,the technical idea and method of setting up a forecast model of gas well deliverability is proposed,the early forecast model system of gas well deliverability of the C 2 h 1 gas reservoirs in this region is set up and the method of forecasting gas well deliverability of fracture pore type carbonate gas reservoirs is perfected and developed.Under different conditions the new well deliverability (both upper limit and lower limit of stable production)during production test period and stable production period may be determined by use of such a system,which is of great significance for the productive management departments and policy makers to choose development well sites and to draw up the development planning and surface engineering budget.