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在下了套管的井中进行温度测量(热流测定)时,假如使用能够得到0.003℃精度的设备,就可观测到某些比较薄的剖面产生异常高的温度梯度,有时可高达140℃/公里。发现温度梯度——深度测井曲线的特性能表明所测建造的特征。许多“尖峰”与电阻率和自然电位测井对比得很好。而其它测井则并非如此。在一个例子中,温度梯度——深度测井曲线特性指明由电阻率测井曲线推断的特定层位漏掉了约100米。
When using a device capable of obtaining a precision of 0.003 ° C for temperature measurement in a wellbored well (heat flow measurement), it is observed that some thinner sections produce abnormally high temperature gradients, sometimes up to 140 ° C / km. The temperature gradient-depth logging curve was found to indicate the characteristics of the measured build. Many “spikes” contrast well with resistivity and natural potential logs. Other logs are not. In one example, the temperature gradient-depth log curve characteristics indicate that a particular horizon inferred from the resistivity log curve missed about 100 meters.