Abstract: To compare the gel point of crude oil with the oil temperature or the ambient temperature is a common practice in the flow assurance assessment of crude oil pipelines. Actually, the gel point of the pumped crude oil definitely has some uncertainty, i.e. fluctuating in some extent. However, the current technical code of "The Operation Regulation of Crude Oil Pipeline" (SY/T 5536-2004) does not explicitly state how to take the gel point value, and consequently it is hard to be applied to the situation that the gel point has great uncertainty. To solve this problem, it is suggested that the mean and the standard deviation of the gel point be used, and compare the two statistical values, i.e. the mean and the value of the mean added by 1 to 3 times of the standard deviation, with the oil temperature or the ambient temperature in the flow assurance assessment using the current technical code. As an illustration of this method, the possibility of no-heating operation is assessed for a long-distance pipeline transporting crude oils whose gel point has great uncertainty.