In the process of oilfield development, sucker rod pump has always played a very important role. This kind of device, which drives the downhole plunger to work through the ground pumping unit, is like a loyal partner, accompanying the oil well through the middle and late stages of production attenuation. The core value of sucker rod pump lies in its reliability, durability and easy maintenance, especially suitable for the continuous production of conventional onshore oil fields. When the natural energy of the oil well is gradually exhausted, sucker rod pump becomes the key pillar to maintain stable crude oil production.
It is most suitable for medium-depth oil wells. Such reservoirs are usually buried between 500 meters and 2,500 meters underground, with moderate crude oil fluidity and low sand content. In this kind of environment, sucker rod pump can stably lift crude oil to the ground while maintaining a low failure rate. For example, the main block of many mature oil fields in our country relies on sucker rod pump to maintain continuous production for decades. After these oil fields enter the high water content stage, sucker rod pump can still effectively control costs and extend the mining cycle by adjusting the working parameters.
The economy of sucker rod pump is its biggest advantage.Compared with other types of manual lifting equipment, the purchase cost of sucker rod pump is reduced by more than half, and daily maintenance is simpler. For medium-yield oil wells, sucker rod pump can achieve refined production management by improving the stroke and stroke. In practice, when the comprehensive moisture content of an oilfield exceeds 80%, replacing expensive equipment with sucker rod pump can often significantly reduce operating expenses. This cost control ability makes sucker rod pump the preferred solution for cost reduction and efficiency enhancement in old oil fields.
Of course, sucker rod pump also has its applicable boundaries.In deep wells of more than three kilometers, too long sucker rods will affect efficiency; For crude oil as viscous as asphalt or reservoirs with high sand content, sucker rod pump also faces greater challenges. In addition, it is difficult to install ground pumping units on offshore platforms due to space constraints, and other lifting methods need to be selected for these scenarios. However, through technological innovation, sucker rod pump is breaking through some limitations-the installation of anti-partial wear devices in inclined wells and the use of hot washing processes in wax-containing wells can expand the application range of sucker rod pump.
Daily operation and maintenance is the key to maximizing the performance of sucker rod pump. Regularly check the verticality of the sucker rod and install a centralizer in the curved well section, which can effectively prevent rod and pipe wear; Dynamically adjust the pumping speed according to changes in the oil well liquid level, which can not only ensure production but also avoid air pumping loss. In recent years, the introduction of intelligent control technology has made sucker rod pump even more powerful: The real-time monitoring system can warn of the risk of broken rods, and the frequency conversion device can automatically match the best working condition. These advances have made the traditional sucker rod pump continue to exert new vitality.
Sucker rod pump will continue to evolve. The application of carbon fiber materials reduces the weight of the column and enables sucker rod pump to extend to deeper reservoirs; Nano coating technology improves the wear resistance of the pump cylinder and enhances the ability to cope with complex geology. Through the establishment of virtual models, digital twin technology is realizing accurate prediction of the operating state of sucker rod pump. These innovations continue to broaden the boundaries of sucker rod pump's vitality.