取样电容法含水率测量的影响因素

Factors Influencing Watercut Determined by Sample Capacitance Method

李艳荣，于舒杰．取样电容法含水率测量的影响因素．测井技术，１９９８，２２（３）：１７５～１７７对取样电容法含水率测量的影响因素进行了理论分析。结果表明，油井出砂、结蜡、稠油等对含水率测量结果均有影响。出砂使测量结果偏大，稠油、结蜡则使测量结果偏小，出砂引起的误差较小且只与出砂量有关，而由结蜡、稠油等引起的沾污的影响较大，由其引起的误差不仅与沾污厚度有关，还与实际含水率大小成线性关系。

Influence factors of watercut determined by sample capacitance method have been studied in theory. The results demonstrated that the watercut measurement can be affected by sand production, paraffin deposition and viscous oil. Sand production makes watercut measured result greater than the actual one, while the others make it smaller. The errors caused by sand production are small and proportional to their content, and that caused by the others are not only great, but also have a linear relation with the actual watercut.