High pour-point oil has different gas logging characteristics from light oil and heavy oil.

测录井方面，高凝油与稀油、稠油具有不同的特征。

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In the light of the difficulty in artificial lifting of waxy oil well, high pour-point oil well and viscous oil well, a new tubing heating system is developed.

针对含蜡油井、高凝油井、稠油油井生产过程中的举升难题，研制了一种新型油管加热采油装置。

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The effects of crude oil properties, the structure of PPD and the testing conditions on pour point depression were discussed.

讨论了原油的性质、降凝剂的结构及试验条件对降凝效果的影响。

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