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In the oil fields, people can often see rows of mechanical devices ups and downs rhythmically, as if they are kowtowing. This is commonly known as the “kowtow machine”, the scientific name beam pump. It is one of the main types of pumping units currently used in oil fields and plays a very important role in the field of oil extraction.

In the field of global oil extraction, lifting technology, as the key driving force of crude oil from underground to the ground, has always been the cornerstone of industrial development. Among them, the lifting technology of the beam-type pumping unit and the lifting technology of the electric submersible pump have become the mainstream choices for oilfield production due to their wide application and reliable performance. The evolution of these two lifting technologies has not only improved the mining efficiency, but also demonstrated the intelligent transformation of modern energy equipment.

Pumping unit is a ground-driven equipment with rod pumping. According to the basic structure of the oil pumping unit, the oil pumping unit can be divided into two categories: Free beam type and non-free beam type. The most widely used at home and abroad is the free beam type oil pumping unit (commonly known as kowtow machine). So today, let's take a closer look at the different types of beam-type pumps that can be used on rod pumps.