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In oil extraction operations, rod pump barrels is the core component of the tubing pump, and the operating status directly determines the oil recovery efficiency and operating cost. Once rod pump barrels fail, it will not only cause oil production to be interrupted, but may also cause complex underground problems, increasing the difficulty of maintenance and economic losses.

During the operation of the oil sucker rod tubing pump, “air lock” is a common and easily overlooked failure. Once it occurs, it will cause the pump body's oil absorption and exhaust efficiency to plummet, and even cause equipment idling and wear. The so-called air lock refers to the phenomenon that after underground gas (such as natural gas and dissolved gas) enters the pump chamber of the oil sucker rod tubing pump, it occupies the effective space of the pump chamber due to the strong compression of the gas and the difficulty of discharging it, hindering the normal inhalation and lifting of crude oil. Timely and scientific removal of the air lock from the pump body associated with the pump rod is the key to ensuring the stable operation of the oil sucker rod tubing pump, which can be achieved in three steps: “Judgment-treatment-prevention”.​

Dongsheng Petroleum sucker rod guide centralizer selects high-performance raw materials, which are processed and formed by advanced technology, and have excellent wear resistance and impact resistance. It can effectively alleviate the frequent workover problems caused by wear and fracture of well pipes during operation. The wear resistance of this sucker rod guide centralizer far exceeds that of traditional ordinary sucker rod guide centralizer, which greatly reduces the frequency of equipment replacement and reduces the cost of oilfield operation and maintenance.​

The tubular pump cylinder adopts a single-cylinder integrated structure, and the whole is a seamless steel pipe (whole cylinder type) or outer pipe + inner liner (combined type), which is directly fixed to the lower end of the tubing as an extension of the tubing, without additional nested parts.

Rod pump barrels corrosion is mainly due to complex underground media： One is that the chloride ions and sulfate ions contained in the highly mineralized formation water will destroy the passivation film on the metal surface of rod pump barrels and cause electrochemical corrosion;

Based on industry standards (API SPEC 11AX and GB18607), this article systematically explains rod pump barrel materials, hardening methods, plunger clearance, inspection standards, and key points for field use, providing a reference for oilfield procurement personnel.

In the core equipment system of oil extraction, the stable operation of downhole sucker rod pump is the key to ensuring the continuous oil production of oil fields and improving the efficiency of mining. With the continuous expansion of oilfield development scenarios, from conventional shallow wells to deep wells, ultra-deep wells, from ordinary reservoirs to complex reservoirs with high sulfur content and high mineralization, the working conditions faced by downhole sucker rod pump are becoming more and more serious. As the core pressure bearing and sealing component of downhole sucker rod pump, the pump barrel is directly related to the overall performance, service life and operating stability of the equipment. It has become an important research direction in the industry to optimize the performance of downhole sucker rod pump.​

In oil extraction, what we often call a piston pump is actually a rod pump that everyone is familiar with-it is the core equipment of underground oil production, relying on the “reciprocating movement of the piston” to extract underground crude oil. The principle is simple but the function is critical. The API 11AX Tubing Pump, which we focus on selling, as a benchmark product in petroleum rod pumps, has taken the advantages of this operating principle to the extreme, and cooperated with the tube pump to form a complete oil recovery system.

In the oil and natural gas industry, pumps are the core equipment to ensure the efficient operation of oil and gas extraction and transportation links. The selection of their types needs to accurately match the underground working conditions.Common pump types include rod pumps, submersible oil pumps, screw pumps, etc. Among them, rod pumps account for more than 60% of applications in land oil and gas fields due to their stable structure and low maintenance costs. Tieling Dongsheng Petroleum Machinery Co., Ltd. is an industry leader focusing on rod pump research and development and manufacturing.​

In mining operations, pumps, as the core equipment for fluid delivery, directly affect mining efficiency and safety. From slurry transportation to underground drainage, different scenarios have different performance requirements for pumps. Common types include centrifugal pumps, submersible pumps, screw pumps, etc., and insert pumps occupy a special position in the mining field due to their sturdy structure, easy maintenance, and adaptability to multiple media. Tieling Dongsheng Petroleum Machinery Co., Ltd. has been deeply engaged in insert pump research and development and manufacturing for many years. Its products have become the preferred equipment for the mining industry with targeted design and reliable performance.