The design and implementation of production water prediction system about coalbed methane (CBM) vertical well

The accurate prediction of Coalbed methane vertical well production water is an important guarantee for reasonable work and CBM high-production during the drainage gas recovery. Based on different logging response in different coal reservoir, using logging curve, original permeability of the coal reservoir is predicted. According to the rock mechanics and hydraulic fracturing, the permeability prediction model is built. The production water prediction can be done using the history matching in the area with drainage gas recovery data, while in the area without the data; the production water prediction model can be gained by the characteristics of pressure transmission. In the paper, the CBM vertical well production water prediction system is designed and implemented based on the C#. The system is of applied good prospect be used in the Panzhuang block of Qinshui basin.