碳酸盐岩储层流体性质识别新技术

A New Method to Identify Fluid Property in Carbonate Reservoir.

碳酸盐岩储层由于其孔隙度低、非均质性强等原因 ,使得以电阻率高低来识别储层流体性质的常规方法失效。提出了不依赖于电阻率测井识别流体性质的新思路、新概念、新技术 ,包括核磁共振测井的移谱、差谱技术 ;交叉多极阵列声波测井的体积压缩系数以及补偿中子测井的长短计数率比值等技术。综合应用这些技术建立了一种新型的碳酸盐岩储层流体性质评价系统。该系统在大港油田千米桥潜山

Low porosity and high heterogeneity in carbonate reservoir make the conventional logging method invalid which uses the resistivity to identify fluid property. This paper introduces a new method independent of resistivity logging. The method includes the time domain differential spectrum and shifted spectrum techniques in NMR logging, the volume compressional factor in XMAC logging and the ratio of long count rate and short count rate in CNL logging. The new carbonate reservoir evaluation system based on these methods has been applied in Dagang Oilfield, and good logging results have been obtained from more than 10 wells in Qianmiqiao buried hill.