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​ How to Achieve Maximum Recovery Rate in Oil Production Through Optimal Development Methods? I. Introduction Oil Production is a Complex Process. The optimal development method is crucial for achieving maximum recovery. For oilfield development, the goal of effectiveness is to extend the high-production and stable-production period as much as possible, ultimately extracting the maximum amount of crude oil, achieving a high final recovery rate and good economic results. However, achieving this goal is not easy. Identifying the reservoir type and selecting a suitable reservoir type is the foundation and basis for determining the oilfield development method. The development method must not only adapt to the different characteristics of the reservoir but also change as the development process progresses. Therefore, these two issues must be carefully considered before an oilfield is put into development. In this process, advanced reservoir stimulation and oil production technologies are crucial, and Artificial Lift technology is one of the core means to improve fluid delivery to the surface.

Recently, while studying the fundamentals of oil exploration, we were once again struck by the complexity of the oil production chain: from how oil and gas are formed, stored, and migrated, to their final extraction through the wellhead, each step requires extensive geological and engineering expertise. In this entire process, once reservoir conditions are confirmed and production begins, one of the most critical pieces of equipment downhole is the Sucker Rod Pump.

Petroleum continues to occupy a crucial position in the global energy structure. Oil and natural gas are not only major energy sources but also the most important basic raw materials for the chemical industry, widely used in the production of thousands of materials such as plastics, rubber, coatings, and synthetic fibers. Therefore, the stable and efficient extraction of oil from the ground is a key focus for oilfields worldwide.

The applicable conditions for API sucker rod pumps require a comprehensive consideration of multiple parameters, including well depth, production rate, well structure, and fluid characteristics. The core suitable scenarios can be summarized as conventional production environments of "medium-deep, low-to-medium production, vertical or slightly deviated wells." According to API SPEC 11AX specifications and industry practice, the specific applicable boundaries are as follows:

In global oil extraction, the rod pump is one of the most crucial artificial lift systems, widely deployed in onshore oil fields, heavy oil wells, deep wells, and highly corrosive environments. To improve well production, reduce well shutdowns, and extend pump lifespan, selecting a high-quality, API 11AX-compliant sucker rod pump is essential. Dongsheng, a leading domestic manufacturer of sucker rod pumps, leverages its factory-direct sales, stable quality, and technical expertise in partnership with SLB to continuously provide global customers with highly reliable API pump, downhole pump, and oil well pump solutions.

In oil exploration, the adaptability of sucker rod centralizer directly determines whether it can be stable and anti-wear and anti-stuck in different well types and complex well conditions. The columnar sucker rod centralizer developed by Dongsheng Petroleum, relying on structural and material innovation, breaks through the limitations of traditional equipment “single adaptation” and realizes flexible matching in multiple scenarios. We analyze the adaptation advantages of this sucker rod centralizer from the three dimensions of well type, well condition, and installation, and show its ability to support different mining scenarios.

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 the operation of the sucker rod pump, the centralizer is a key component to avoid partial wear of the rod and ensure the stability of the equipment. Spiral sucker rod centralizer and standard sucker rod centralizer are common types in oil fields. The two have significant differences in structure, application scenarios and performance. The following is a detailed analysis of the differences based on our Dongsheng Petroleum experience and standards.

Complex underground working conditions, high temperature, high pressure, medium corrosion and high-frequency friction between components often cause damage to the internal structure of the sucker rod pump and affect the service life of the equipment. As an important core component of the sucker rod pump, cages for downhole pump relies on its own performance to provide a reliable solution to this problem and has become the key support to ensure the efficient operation of the sucker rod pump.

In the field of oil extraction, the pumping rod pump is the core equipment of mechanical oil production, and the operating stability of the rod pump directly determines the mining efficiency and economic benefits of the oilfield. However, in the actual mining process, sucker rod pumps often face the problem of underground water accumulation. Water accumulation will not only increase the operating load of the sucker rod, but may also cause problems such as partial wear of the rod and pipe, and decreased pump efficiency. In severe cases, it can even lead to equipment failure and shutdown. The emergence of tubing drain valves for oilfield has provided an efficient and feasible solution to solve the pain points of this industry, and has become an important supporting component to ensure the stable operation of the sucker rod pump.