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“岩心刻度测井”技术是在获得地质、取心、测试等资料的基础上 ,进行精细测井解释较普遍采用的方法 ,以此为指导思想 ,由南八仙油气田实际资料分析入手 ,通过确定岩性、物性与电性之间的最佳转换关系 ,逐步建立了第三系砂岩储集层的泥质含量、粒度均值、孔隙度、渗透率、含油 (气 )饱和度等储集层参数解释模型 ,其中针对储集层含气时对测井响应的影响 ,分别建立了油气层与水层的孔隙度模型。在测井储集层参数研究基础上 ,与试油气结论相结合制作了油 (气 )、水层识别图版。并依据气层在三孔隙度曲线上存在的特殊的响应特征 ,探讨空间模量差比法、双中子孔隙度差值法等直观识别气层方法与常规方法的验证关系。通过南八仙油气田 8口井资料的实际处理解释 ,取得了较好的效果 ,与试油气资料对比符合率达 85 % ,证实其可做为南八仙油气层识别的有效方法。
The “Core Scale Logging” technique is a commonly used method for fine log interpretation based on the data of geology, coring and testing. Based on this, the core idea is to start with the analysis of the actual data of Nanbaixian Oil and Gas Field, Lithology, physical properties and electrical properties of the best conversion between the gradual establishment of the Tertiary sandstone reservoir shale content, grain size, porosity, permeability, oil (gas) saturation reservoir parameters The model is explained, in which the porosity model of oil-gas layer and water layer are established respectively according to the influence of gas-bearing on logging response. Based on the study of logging reservoir parameters, the oil (gas) and water layer identification plates were made in combination with the conclusion of test oil and gas. Based on the special response characteristics of the gas layer on the three porosity curve, the verification relationship between the gas recognition method and the conventional method, such as the space modulus difference method and the neutron porosity difference method, is discussed. Through the actual processing and interpretation of 8 wells in Nanbaixian oil and gas field, good results have been obtained. The coincidence rate with the test oil and gas data is 85%, which proves that it can be used as an effective method to identify the Nanbaixian oil and gas reservoir.