轮南油田水淹层的测井识别与评价

Identification and Evaluation of Water-flooded Zones with Logging Method in Lunnan Oil Field

轮南油田目前已进入中高含水采油期,为了配合油田的高效开发及挖潜工作,对轮南油田水淹层的测井响应进行了分析,找出了水淹层在电阻率、自然电位及核物理性质等方面的变化特征。在此基础上,充分利用岩心分析及生产动态资料,建立了评价轮南油田水淹层剩余油饱和度的计算模型,并利用该模型计算的剩余油饱和度结合含水率,对该油田水淹级别与标准进行了合理的划分,通过实际资料的分析与处理,计算结果与实际生产数据较为吻合,证明了该方法的有效性与实用性。

Lunnan oil fields have now entered the period of high water content oil production. In order to meet the development of oil fields, we analyzed the logging response of the water--flooded, and got the features of the flooded layer resistivity, spontaneous potential and nuclear changes in physical properties. On this basis, we made full use of rock core analysis and production data to establish a calculating model for evaluating remaining oil saturation of Lunnan oil fields water--flooded zone. Combining the result of the remaining oil saturation with water content, the level and standard of the flooding are divided in a reasonable way. Through the actual data analysis and processing, the results are consistent with the actual data and show that the method is effective and practical.