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Recently, a delegation from SLB Company visited our company for technical exchanges and on-site inspections. Our company has long been deeply involved in the oilfield services sector, primarily engaged in the research, development, production, and technical services of sucker rod pumps, special sucker rod pumps, and related accessories. This visit was an important step for both parties to further strengthen understanding and explore cooperation opportunities.

Sucker rod pumping is the most common artificial lift method both domestically and internationally: Venezuela: 70% of oil wells are pumped using rod pumps. The United States: 85% of oil wells are pumped using rod pumps. Russia: Over 55% of oil wells are pumped using rod pumps. China: Over 80% of oil wells use sucker rod pumps, accounting for 75% of total oil production. Rod pumps play a crucial role in my country's oil extraction.

The importance of the sucker rod pump: Although it accounts for a small proportion of the total cost and weight of a complete rod-operated pumping unit, it is a key component determining the technical and economic indicators of the unit. The operating condition of the sucker rod pump significantly affects the service life of the surface pumping unit and sucker rod. Factors such as plunger jamming, delayed opening and closing of pump valves, and excessive pump clearance volume can all cause overload and malfunction of the pumping unit and sucker rod, leading to well collapse. A schematic diagram of the structure and operation of a sucker rod pump is shown in the figure.

With the continuous extension of oil well development time and the increase in oilfield production projects, coupled with the high complexity of the oil reservoir environment and the year-round operation of oil wells, the types of oil well failures have become more complex. The following section uses the surface engineering of oil wells as an example to analyze common oil well failures and corresponding countermeasures.

1.Overview of Tubing Pumps: Common Pump Types: Commonly used pumps in oil wells include tubing pumps, screw pumps, and ESPs. This article mainly introduces tubing pumps. Tubing PumpStructure: It mainly consists of a working barrel, bushing, fixed valve, piston, traveling valve, and clamping clamp. The working barrel contains a bushing, which is fixed at both ends with clamping clamps. Conventional tubing pumps are bushed pump barrels, metal plunger pumps, available in various diameters of 38, 44, 56, 70, 83, and 95 mm, with strokes of 3m and 5m.

Artificial lifting is a process where, when the natural energy of the formation is insufficient to sustain natural flow production, or although natural flow is possible but the production rate is insufficient, mechanical equipment is installed in the wellbore to work on the fluid, allowing it to flow to the surface.

​ 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: