气层损害评价方法在塔里木盆地大北气田的应用

Application of Evaluation Method of Gas Reservoir Damage in Tarim Basin

通过对试井资料解释所获得的总表皮系数进行分解,得到了反映气层真实损害程度的地层损害表皮系数。采用地层损害表皮系数、措施增产率及损害半径作为气层损害矿场评价参数,以此为理论依据,采用VC++.NET 2005在Windows XP环境下开发出气层损害评价软件。通过对塔里木盆地大北3气井进行了定量评价,结果表明,该井测试层段损害严重,通过采取适当的增产措施,消除地层损害表皮后可使产量得到大幅度提高,该软件具有很好的实用价值。

The true mechanical skin factor really reflecting gas reservoir damage is obtained by decomposing and analyzing the total skin factor obtained from well test interpretation.Based on the gas reservoir damage parameters such as true mechanical skin factor,production increasing rate due to stimulation and damage radius etc.,a damage evaluation software for gas reservoir under the condition of Windows XP is developed by VC++.NET 2005.Application in Well Dabei 3 in Tarim basin for quantitative evaluation showed that the damage in the tested gas zone of this well is very serious,stimulation treatment should be taken to eliminate the damage,and so production would increase a lot.This software is valuable in practice.