油藏影响函数在气藏中的应用

APPLICATION OF INFLUENCE FUNCTION OF OIL RESERVOIRS IN GAS RESERVOIRS

应用油藏影响函数 ,可以研究具有严重非均质性的油藏开发动态 ,特别是实现地质储量的早期预测。文章将油藏影响函数应用到了气藏开发动态研究之中 ,根据气体特性 ,提出了均质气藏的影响函数解 ,并建立了气藏通用影响函数模型 ,采用线性规划法求解其数值解。利用气藏的生产计量和定期流压测试等短期弹性试采资料 ,就可快速、准确地预测气藏弹性容量、孔隙体积、地质储量等 ,这为气藏合理开发提供决策技术依据 ,为气藏工程研究提供新的途径。

Using influence function of oil reservoirs, the performance of very heterogeneous oil reservoirs can be studied, and the oil in place can be predicted at early stage. Applying influence function of oil reservoirs into performance study of gas reservoir development, according to the gas characteristics, the article provides the solution of the influence function of homogeneous gas reservoirs, and establishes the model of general influence function of gas reservoirs, and derives its numeral solution with linear program method. Using short-term elastic production testing data, such as the flow rate and the periodical survey of flowing pressure, etc., the elastic volume capacity, pore volume, gas in place, etc. of the gas reservoir can be calculated rapidly and accurately. The approach gives the basis of reasonable developing gas reservoirs for the decision-makers and provides new way for the engineering study of gas reservoirs.