A robust reservoir surveillance program is key to successful management of a steamflood operation and accurate measurement and proper interpretation of temperature surveys is essential for such a surveillance program. The objective of this study was to look at factors that can impact a temperature log by performing an extensive analysis of field data, primarily gathered from a single company's steamflood operations in California, from over 1000 temperature observation wells. Additionally, a simple analytical assessment was performed to understand the role of key dominating mechanisms and to gain directional insight. Field data and analytical assessment suggest that higher logging speeds introduce greater error in measured temperature data and these errors are greater at elevated steamchest temperatures. Temperature tools with longer sensor response times need to be run at lower logging speeds to get accurate measurements. Ensuring an adequate level of thermally equilibrated liquid (typically water) in the observation well is essential both, for gathering accurate data and to mitigate possible safety concerns for the logging operator. Several field examples are presented to illustrate the effects of logging speed, steamchest temperature, sensor type, and wellbore fluid on recorded temperature data. Guidance on evaluating and interpreting different temperature signatures such as interpretation of liquid level in an observation well, understanding temperature signatures in air, wellbore reflux phenomenon, and examples of logs from malfunctioning logging tools, are also provided. The main purpose of this work is to aid both the operators and the service companies to gather accurate temperature data for improved steamflood management and for all investigators using thermal operation temperature data to understand how and where that data might be compromised.

强大的油藏监控程序是成功管理蒸汽驱操作和准确测量的关键，而温度测量的正确解释对于此类监控程序至关重要。这项研究的目的是通过对现场数据进行广泛的分析来研究可能影响温度记录的因素，这些数据主要是从一家公司在加利福尼亚州的蒸汽驱业务中，从1000多个温度观测井收集而来。此外，进行了简单的分析评估，以了解关键控制机制的作用并获得方向性见解。现场数据和分析评估表明，更高的测井速度会在测得的温度数据中引入更大的误差，而在蒸箱温度升高时，这些误差会更大。具有较长传感器响应时间的温度工具需要以较低的记录速度运行，以获取准确的测量结果。确保观测井中有足够水平的热平衡液体（通常是水），对于收集准确的数据和减轻伐木工人可能的安全隐患都是至关重要的。给出了几个现场示例，以说明测井速度，蒸汽井温度，传感器类型和井筒流体对记录的温度数据的影响。还提供了有关评估和解释不同温度特征的指南，例如观察井中液位的解释，了解空气中的温度特征，井眼回流现象以及测井工具故障的测井实例。