一种有效的试井数据离散化方法

AN EFFICIENT DISCRETIZATION METHOD FOR WELL TEST DATA

随着试井仪器性能的提高,通过测试得到的数据点数目也呈几何级数增长。理论上讲,测试的数据点越多,随机误差也会越小,解释结果也会越精确。但从实际应用情况来看,直接应用测试数据进行解释做出的压力导数曲线的中后期相当离散,从而对解释造成了相当大的困难。而且庞大的数据点也会影响到计算机的运算速度。研究了一种对解释段数据进行离散化的方法,能够很好的解决这一情况,并给出了运用该方法对大庆地区试井资料的解释实例,证明该方法的实用性及可靠性。

With the improvement of the equipment for well test,the number of the data points from the test is increased geometrically.Theoretically,the more the data points are,the less the random error and the more accurate interpretation results.However,the middle and late period of the pressure derivative curve is quite discrete by the direct well test data,which causes considerable difficulties of the interpretation.Moreover,the huge data points will affect computation speed.An efficient discretization method of data points is researched in the paper and examples of the method application are also given in Daqing oil field.