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In actual oilfield operations, sucker rod pumps, as transmission components of rod pump oil production, often bear high-frequency and alternating mechanical loads. During maintenance and overhaul, we often encounter different types of sucker rod pump failure problems. Combining field data and previous cases, here are several common failure modes and their possible causes for reference by peers.

​When I disassembled the long plunger sand control subsurface pump that had been used for almost a year with the customer on site, the first thing I noticed was that the wear on the contact surface between the plunger and the pump barrel was almost negligible. The customer's words at the time impressed me deeply: "I didn't expect that this well condition could withstand so long." This pump is the 25 106th long plunger sand control pump we recommended. Their oil wells are typical well sections with high sand content and strong liquid corrosiveness. Many customers asked us, what does the 25 106th model mean? We are used to explaining that 25 is the diameter of the pump barrel, 106 represents the length, and th is the version with enhanced structure. In practical applications, it is not just a parameter number, but also represents a type of pump type structure optimized for the problem of "high wear, high sand, and easy to get stuck".

In Dongsheng's workshop, you can always see such scenes: Someone is leaning over to debug the equipment, someone is holding a welding gun with a focused look, and someone is meditating in front of the drawing, outlining the precision of the parts stroke by stroke. They are our familiar colleagues, backbones, technicians - and also the "fathers" at home. The dust on the work clothes is the traces they leave on the production line every day; the photos of their children in the mobile phone are the concerns they look through before going home late at night. They are equally calm and reliable between family and career. Someone is leaning over to debug the equipment, someone is holding a welding gun with a focused look, and someone is meditating in front of the drawing, outlining the precision of the parts stroke by stroke. They are our familiar colleagues, backbones, technicians - and also the "fathers" at home. The dust on the work clothes is the traces they leave on the production line every day; the photos of their children in the mobile phone are the concerns they look through before going home late at night. They are equally calm and reliable between family and career. To express our respect, the company carefully prepared a thoughtful Father's Day gift for each employee's father, including customized mugs, exclusive tool kits, health care gift packs, etc. Although these are not expensive, they carry our sincere respect for their "father" identity. On the day of the gift distribution, an employee joked: "I didn't expect the company to remember that I am a father." But after the laughter, everyone's eyes were filled with an unspoken warmth.

In western and southern India, many oil fields in the middle and late stages have encountered such problems: Less than half a year after the sucker rod pump was replaced, abnormal noises began to appear in the well, either broken rods or eccentric wear. In serious cases, the well was directly stopped for repair, wasting a lot of manpower and material resources. In fact, the root cause of the problem is not complicated - the well conditions are changing, but the sucker rod pump used has not kept up. Faced with this situation, more and more Indian customers are beginning to try to use China's API sucker rod pump, not because we say it well, but because these sucker rod pumps are indeed durable and long-lasting on site.

We all know that although the artificial lift sucker rod pump is only a part of the downhole equipment, its selection has a particularly large impact on the life and production capacity of the well. Especially after the shale oil wells in the United States enter the middle and late stages, the well conditions are becoming more and more complicated, and the production is gradually declining. The quality and performance of the artificial lift sucker rod pump are directly related to whether the production can be stabilized and the shutdown and maintenance can be reduced.

We are fortunate to receive a group of important customer teams from Brazil. This face-to-face communication not only deepened the understanding between the two sides, but also laid a solid foundation for subsequent cooperation. As a company focusing on petroleum machinery manufacturing, we have always attached importance to the needs and experience of overseas customers, and hope to let customers understand our product strength and service concept more intuitively through open and professional communication methods.

1. Oil well (pump inspection) operation: The methods of extracting oil from the formation can be divided into two categories: one is to use the energy of the formation itself to lift crude oil, which is called self-flowing oil production; the other is that due to the lack of energy in the formation itself, it is necessary to artificially use mechanical equipment to supplement the energy of the liquid in the well in order to lift the crude oil to the ground, which is called artificial lifting oil production or mechanical oil production. At present, the main artificial lifting methods in oil fields are gas lift, insert rod pump oil production and rodless pump oil production. insert rod pump oil production includes pumping unit insert rod pump and ground driven screw pump (generally not used). Rodless pump oil production includes electric submersible pumps, hydraulic piston pumps, jet pumps, etc. Regardless of the lifting oil production method used, due to adjustments to the oil field development plan, equipment failures, etc., pump inspection (replacement) operations are required. 2.Check (replace) the insert rod pump: The insert rod pump is a method of producing oil by transferring the reciprocating motion of the pumping unit suspension point to the pumping pump through the sucker rod, and the insert rod pump piston moves up and down to take out the liquid in the well. insert rod pump is currently the most widely used artificial lift oil production method in various oil fields, accounting for about 90% of the number of artificial lift wells. The insert rod pump is mainly composed of a pumping unit, a pumping pump, a sucker rod and supporting tools. The pump should be inspected due to a failure of the insert rod pump downhole. The time interval between two pump inspections is called the pump inspection cycle. Many factors such as the production of the oil well, the oil layer pressure, the oil layer temperature, the gas and water discharge, the sand and wax deposition of the oil well, the corrosiveness of the crude oil, and the management system of the oil well will affect the length of the pump inspection cycle.

Sucker rod pump oil production is the most widely used oil production method at present. China's sucker rod pump oil production accounts for about 90% of the total number of artificial lift oil production wells. The sucker rod pump equipment is simple, with low investment, convenient management and strong adaptability. It can be used from shallow wells of 200 to 300 meters to deep wells of 3,000 meters, and the oil production ranges from a few tons per day to 100 to 200 tons per day. In terms of equipment manufacturing, from ground pumping units, downhole sucker rods to sucker pumps, China's products have long been serialized and complete sets, which can meet the production needs of oil fields. The disadvantage of the sucker pump is that the displacement is not large enough, and it cannot meet the requirements for oil wells with a daily output of more than 200 tons.

We often say that life is priceless. But when you really encounter an emergency, whether you can hold the lifeline of the "golden four minutes" sometimes depends on whether you and I have mastered even a little first aid knowledge.

1. Control tools: Downhole tool control tools have undergone a transformation from simple mechanical devices to highly intelligent and automated equipment. Traditional downhole control tools rely on mechanical principles, have single functions and low efficiency. With the advancement of science and technology, modern downhole control tools have incorporated advanced technologies such as high-precision sensors, remote control systems, and data analysis software, which have significantly improved operating efficiency and accuracy.