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陈福煊,张开洪,陈一健.高温高压NaCl溶液低频复导电特性的测量.测井技术,1997,21(1):15~19用新近开发的高温高压地层水电阻率测量装置测量NaCl溶液的高温高压低频复导电特性。常温常压测量结果与美国25个实验室[1]测量数据基本一致;不同温度和浓度的NaCl溶液电阻率的测量结果与斯仑贝谢公司的测量图版所得结果基本一致。但其测量结果同时表明,除浓度和温度外,测量频率(12Hz~100kHz)和加在溶液上的压力对淡水电阻率影响很大,相对偏差可达±50%。溶液电阻率随频率和内压的增加而降低。因此,在淡地层水油田或淡水驱油层用电阻率测井资料计算含油饱和度时,应考虑测量频率和地层压力对地层水电阻率的影响。
Chen Fuyi, Zhang Kaihong, Chen Yijian. Low Frequency Complex Conductance Measurement of High Temperature and High Pressure NaCl Solution. Logging Technology, 1997,21 (1): 15 ~ 19 The high-temperature and high-pressure low frequency complex conductance characteristics of NaCl solution were measured by newly developed high temperature and high pressure formation water resistivity measuring device. The measurement results at room temperature and atmospheric pressure are basically the same as those measured by 25 laboratories in the United States [1]. The results of NaCl solution resistivity measurements at different temperatures and concentrations are in good agreement with the results obtained by Schlumberger. However, the measurement results also show that in addition to the concentration and temperature, the measurement frequency (12Hz ~ 100kHz) and the pressure on the solution has a great impact on the resistivity of freshwater, the relative deviation of up to ± 50%. Solution resistivity decreases with increasing frequency and internal pressure. Therefore, the effect of formation frequency and formation pressure on the formation water resistivity should be taken into account when calculating oil saturation using resistivity log data from shallow groundwater reservoirs or freshwater flooding reservoirs.