敖南油田水平井测井解释方法研究

Logging Interpretation of Horizontal Wells in Aonan Oilfield

由于水平井不同于直井,近水平穿越地层,井眼周围介质不呈径向对称,因此增加了水平井储层建模的难度。以敖南油田为例,分析了水平井的声波、电阻率、渗透率以及饱和度参数各向异性特征,并做了相应的各向异性校正。利用岩心分析化验资料,综合考虑各向异性特征,建立了水平井测井解释模型,并结合水平井井眼轨迹,参考邻井信息,综合判别研究区水平井储层的含油性。解释结论与试油结论符合率达85%,证明了该方法的有效性。

Because horizontal wells were different from vertical wells,the horizontal wells passed through formation almost horizontally.The media were not radial symmetry around the wellbore,hence it induced the hardness of reservoir modeling in horizontal wells.By taking Aonan oilfield for example,the anisotropic characteristics of interval transit time,resistivity,permeability and saturation parameters were analyzed,the anisotropic correction was performed.Core analysis and test data were used and anisotropic characteristics were comprehensively studied,horizontal well interpretation models were established.In combination with horizontal well track and the reference of adjacent well data,oil-bearing property of its reservoirs is comprehensively studied.The coincidence rate of interpretation is 85%,it proves that the method is validate.