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I. The Crucial Role of Rod Pump Barrels in the Oil Extraction Industry Oil, as a vital resource for global economic development, has long held a pivotal position in the energy structure. Whether in transportation, chemical raw materials, or power generation, oil and its derivatives remain an indispensable energy source for modern society. Despite the rapid development of new energy technologies, oil extraction will continue to be a crucial pillar of global energy supply in the foreseeable future.

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.

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.

We Dongsheng Petroleum Machinery Co., Ltd.Launched a professional protection plan for the global transportation of brass pump barrels, through standardized packaging, environmental control and full process monitoring, in order to ensure zero damage to the brass pump barrels from the Liaoning factory to the international oilfield site.We have successfully applied this system to orders from more than 20 countries such as the United States and Canada, and the transportation loss rate has decreased significantly, which has become a key pillar to protect the interests of customers.

Sucker Rod Pump Technical Standards: 1. Sucker rod pump parts materials and processes: Pump Barrel: Sucker rod pump barrel hardening methods: chrome plating, carburizing. Chrome-plated pump barrel basic materials: 1045, 1026, 4140, 4/6 chrome steel, C44300. Carburized pump barrel basic materials: 1020 steel. Pump barrel maximum length: 35ft. Chrome plating hardness: HV100900~1160. Carburizing hardness: minimum hardness 690 Knoop at 0.005in from the single edge surface, minimum hardness 466 Knoop at 0.010in from the single edge surface. Plunger For Oil Well: Plunger hardening method: alloy powder spray welding, chrome plating. Spray welding layer hardness: ≥HV200595. Chrome plating hardness: HV100832~1160. Various lengths of plungers can be manufactured according to user requirements, with a maximum length of 41ft. Parts: API standard whole-barrel pump, rod pump, moving barrel pump accessories; monel alloy lined valve cover; rubber lined valve cover, Parts materials include: carbon steel, low alloy steel, stainless steel, nickel-copper alloy, brass Valve pair: Valve pair materials include: stainless steel; cobalt-chromium-tungsten alloy; tungsten carbide; titanium carbide; nickel carbide.

In the process of crude oil extraction, sucker rod pump barrel leakage is a common problem, which not only causes delays and energy waste, but also may cause problems such as liquid hammer and vibration, and accelerate the damage of components such as plungers and valve groups. Pollute the well site environment and even cause fire hazards. So, what causes pump barrel leakage? How should we effectively reduce pump barrel leakage?