苏里格气田“单点法”产能测试条件研究

Study on the conditions for predicting the productivity of Sulige Gasfield by momo-point analysis method

结合苏里格气田的实际,对“单点法”产能试井方法的理论基础进行了分析,建立了适合于苏里格气田产能评价的“单点法”数学模型,研究了苏里格气田“单点法”试井测试的基本条件.结果表明,“单点法”产能试井方法是苏里格气田产能分析的一种十分有效的方法,但使用该方法时,需要满足一定的测试条件.苏里格气田气井至少需要无阻生产200h,并且井底压比小于80%时用“单点法”计算的无阻流量才能可靠地反映地层的实际情况.

The theoretical basis of the mono-point predicting productivity method is analyzed, and a mathe-matic model of the method is established which is suitable for Sulige Gasfield. The conditions are discussed that must be met when the model is applied in the gasfield. It is shown that, the mono-point productivity predicting method is very effective to Sulige Gasfield, but when it is used, the production time of the predicted oil wells must be longer than 200 h, and the bottom-hole return pressure ratio must be less than 80%.