Abstract: This paper describes the application of magnetic technique to the production and transport of petroleum since the advent of neodymium-iron-boron (Nd-Fe-B), a permanent magnetic material with high magnetic energy product, magnetizing treatment of crude oil was carried out by a cohesive strong ma.gnetic field, resulting in an average viscosity-reduction up to 40～55%, the transpoitability was increased by more than 10%, and the paraffin removed interval for an oil well was prolonged from 10 to 20times. A correlation of the energy of the strong magnetic field to the change in shear force was derived in accordance with the principle of energy transformation. It is considered that viscosity-reduction lies principally in the change of shear force in crude oii under the effect of the strong magnetic field.

摘要： 本文论述高磁能积永磁材料钕铁硼(Nd-Fe-B)出现后,磁技术在石油开采与输送方面的应用。采用内聚式强磁场对原油作磁场处理,其平均降粘率可达40～55%,提高输送能力10%以上,延长采油井清蜡周期10～20倍。作者根据能量转换原理,推导了从强磁场能量到剪切力的转换关系式。认为:在强磁场作用下,原油介质中剪切力的变化,是粘度下降的主要原因。