基于云模型的苏五区块石盒子组流体性质判别方法

摘要

Because of the coexistence of high and low resistivity water layer , and high low porosity water layer and gas layer , it is difficult to identify the fluid property in Sulige Gas-field, and the resistivity difference is also difficult to be applied in this field .The pattern recogni-tion method is presented , which is established joint matrix by the fluid properties logging curves and reservoir classification -the widely ap-plied cloud model .The membership degree matrix is obtained about all sorts of reservoir , and the fluid property can be identified by apply-ing the introversions between qualitative and quantitative .%苏五区块石盒子组流体性质难以判别，这是由于在该区高阻与低阻水层、气层并存，高孔隙度气层、水层并存，电阻率差异性在本区也难以应用。基于这一困难，参考云模型在其他领域的广泛应用，提出了由识别流体性质的测井曲线与储层类别建立联合判别矩阵进行模式判别的方法———云模型识别方法。该方法利用云模型对各类储层测井参数进行指标集的构建与正态云建模，从而得到各类储层隶属度矩阵，然后利用云模型的定性定量转换特性进行流体性质判别。