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The tubing pump is an underground pumping device directly fixed to the bottom of the oil pipe. The plunger is driven by the pumping rod to reciprocate and lift the crude oil from the bottom of the well to the ground. Its simple structure and low cost are suitable for oil wells with medium and low production and stable well conditions, but the entire oil pipe needs to be removed during maintenance.

In the field of oilfield development, choosing the right lifting equipment is very important to maintain stable oil well production and improve recovery. In recent years, insert rod pump, as an efficient and adaptable mechanical oil production equipment, has shown significant advantages under specific reservoir conditions. Its application scenarios are receiving widespread attention and practical testing from Tieling Dongsheng Petroleum Co., Ltd. and other companies in the industry.

Oilfield development has entered the middle and late stages, and it is a common phenomenon for formation energy attenuation to cause oil wells to lose their self-injection capacity. Artificial lift technology drives downhole equipment through external power to establish a continuous flow channel of crude oil from the reservoir to the ground, which has become a key technical means to maintain oil and gas production. Artificial lift technology is essentially a scientific supplement to subsurface energy, which can effectively overcome mining obstacles such as insufficient reservoir pressure and fluid viscous resistance.

The rod pump is the core equipment for mechanical lifting in petroleum mines. The plunger is driven by the sucker rod to efficiently extract the crude oil from the bottom of the well to the ground, which directly determines the production capacity and recovery rate of the oil well. The rod pump has a simple structure, sand resistance and wear resistance (especially suitable for inclined wells/low-yield wells), which can significantly reduce maintenance costs by more than 40%. It is the key support to extend the life of old wells and ensure stable production.

Rod pumps are usually divided into three types, namely: tube pumps, rod pumps and special pumps. Tubular pump: The pump barrel is directly connected to the bottom of the tubing, which is suitable for shallow or medium-deep wells. It has the characteristics of simple structure and easy maintenance. Rod pump: The pump body is suspended underground through a sucker rod, which is suitable for deep wells and has a strong pressure bearing capacity, but the installation and maintenance are relatively complicated. Special pumps: such as sand-proof pumps, anticorrosive pumps, etc., are designed for specific geological conditions and are used to solve problems such as sand stuck and corrosion.

Insert rod pump is a kind of mechanical equipment widely used in the field of petroleum extraction, mainly used to extract crude oil from oil wells. The design concept of insert rod pump is based on artificial lifting technology, which mechanically lifts the fluid in the formation to the ground, thereby overcoming the natural flow difficulties caused by insufficient reservoir pressure. Insert rod pump has the characteristics of simple structure, high reliability and strong adaptability, and plays an outstanding role in low-permeability reservoirs and high-water-bearing oil wells.

The insert rod pump is a piece of equipment widely used in oil production, featuring a simple structure, easy maintenance, and high reliability. This article will explain the working principle, structural features, operation, maintenance, and troubleshooting of the insert rod pump to help readers better understand and apply this equipment.

Selection Guide: Shallow wells with high production (<300 meters): Tube pumps offer 12% lower energy consumption, but require tubing pull-up for maintenance. Deep wells with low production (>5,000 meters): Insert rod pump maintenance cycles extend to 18 months, and displacement is only 15 cubic meters per day. Heavy oil in inclined wells: Hydraulic pumps offer 2.3 times the displacement of rod pumps, increasing pipeline costs by 40%. Key Data: Insert rod pumps have a maximum stroke of 3,000 meters (the height of a 300-story building). Rod string vibration reduces actual stroke by 15%. Gas anchor devices can separate over 90% of bottomhole gas.

Oil recovery by rod pump is realized by a rod pumping system based on “three pumping” equipment (pumping unit, pumping rod and oil pump). That is, under the drive of the pumping unit, the plunger of the pumping pump (also known as the deep well pump) is driven up and down by the pumping rod going down into the well, and the well fluid is drawn to the ground.

Carbon fiber sucker rod centralizer uses carbon fiber and ultra-high molecular polyethylene, which have the advantages of light weight, high strength, high modulus, low density, high temperature resistance, corrosion resistance, etc. As raw materials. It is processed and molded by injection molding and other methods to effectively alleviate the frequent workover problems caused by well pipe wear and fracture. Its wear resistance is more than 5 times that of nylon centralizer.