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1．前言空心电热杆采油系统，主要由地面供电控制和井下加热两大部分构成。井下加热部分采用空心抽油杆和特制加热电缆。该工艺具有施工简单、成本低、热效率高等特点，是开采高凝、高粘、高含蜡油藏的一种新的措施。它不但可提高油井综合时率和泵效，而且还可以解决低产稠油井
1. Foreword Hollow electric rod production system, mainly by the ground control and underground power supply heating two major components. Underground heating part of the hollow sucker rod and special heating cable. The process has the characteristics of simple construction, low cost and high thermal efficiency, and is a new measure for exploiting high condensing, high viscosity and high waxy reservoirs. It not only improves the overall well rate and pump efficiency, but also can solve the low production heavy oil wells