水淹层测井评价方法

EVALUATION OF WATER FLOODED INTERVAL WELL LOGGING .

提出了一套利用常规测井资料在地质条件约束下，动静态相结合、岩心刻度、多学科联合下，先对水淹层水淹级别进行划分，然后，在地质条件约束的水淹层测井评价模型基础上，对水淹层水淹级别进行由定性识别到定量判别再到定量评价的水淹层测井评价方法。利用该方法对孤岛油田中一区Ｎｇ３＋４高孔、高渗河流相储层５１０口井的水淹层常规测井资料进行了处理和评价，经动、静态资料误差检验，证明该方法能较大幅度地提高水淹层测井评价精度。经现场８口新井检验，该方法的水淹层测井评价精度比常规其它水淹层测井评价方法的评价精度提高２５倍以上，其评价结果能够满足实际生产需要。

This article presents an evaluation method on waterflooded interval well logging by means of conventional log data.Firstly,the method is applied to divide the levels of waterflooded intervals under the circumstances of geologic condition restraints,combination of performance and static behavior,core scales,and diversified courses.Secondly,the levels of waterflooded interval analysis are undertaken qualitatively and quantitatively,leading to quantitative appraisal eventually on the basis of evaluation models of waterflooded intervals constrained by geological conditions.This method has proved itself to be successful in enhancing the accuracy of waterflooded interval well logging by a big margin.The conventional logging data of waterflooded reservoirs in highporosity and highpermeability complex of Ng3+4 have been processed and evaluated at 510 wells in Gudao Oilfield.Upon being tested to 8 new wells,the method proves to be able to raise the accuracy to over 250% higher than that of other evaluation methods.The results will be able to meet the onsite demands.