With the continuous development of the global economy, the demand for oil as an important energy resource continues to grow. At the same time, the difficulty of oil extraction is gradually increasing, shallow oil resources are decreasing, and extraction is gradually expanding to complex areas such as deep sea and deep wells. The mine environment is harsh, the difficulty of extraction is increasing, the number of overloaded wells is increasing, and the limitations of traditional oil extraction methods are becoming increasingly prominent. Developing new materials, new technologies and finding more efficient and environmentally friendly extraction methods have become important tasks facing the oil industry. The sucker rod is one of the main components in the oil rod oil extraction technology. It connects the pumping unit and the oil pump and uses traditional power to pump crude oil from the ground to the ground. The application environment of the sucker rod is relatively harsh. It has to come into contact with crude oil, which contains water, acid and alkali substances and sulfur-containing compounds, which are serious corrosion to metals.
Therefore, scientists have turned their attention to a new type of Carbon Fiber.
Compared with ordinary sucker rods, carbon fiber sucker rod has the advantages of super strength, super light weight, corrosion resistance, continuity, and high energy efficiency.
In order to overcome the shortcomings of ordinary steel sucker rods, such as heavy weight, high energy consumption, frequent failure, large piston effect, slow lifting and lowering speed, and easy wear, scientists have developed a carbon fiber composite flexible sucker rod. This sucker rod is based on unsaturated resin and uses carbon fiber as reinforcing fiber, which is cross-linked and cured at high temperature and produced through a pultrusion process.
What are the advantages of V&T carbon fiber sucker rods:
1.High tensile strength and low density can reduce the load of the pumping unit and save resources.
The tensile strength of carbon fiber is 10 times that of steel and the density is about 1/5 of that of steel. The sucker rod made of carbon fiber is light in weight, which reduces the load of the bare rod and the torque of the reducer, saves electricity, reduces the labor intensity of workers, and increases the operation speed.
2.Corrosion resistance, extended pump inspection cycle, long service life.
Carbon fiber composite materials will hardly corrode, scale, and wax.
3.Reduce the failure frequency and piston effect of the sucker rod.
There is no coupling in the middle of the carbon fiber sucker rod, which reduces the failure and piston effect caused by the coupling.
4.Single rod can reach up to 8000m
The carbon fiber sucker rod can be wound on a roller with a diameter of 4m, and can be used like a continuous oil pipe. A single replacement operation team of 3-4 people can complete it. The long-stroke pumping method has a single maximum stroke of 200m
5.Comprehensive cost savings can reach more than 75%
The total weight of the carbon fiber sucker rod is reduced to 1/4, and a smaller pump body can be selected, and its replacement cycle can be extended to 2-2.5 times
New materials are an indispensable material basis for supporting high-end equipment and major projects, the "chassis technology" of advanced manufacturing, and a key area for cultivating new quality productivity. As a new type of material, the scope of application of carbon fiber composite materials is gradually expanding. In the field of petroleum and petrochemicals, the advantages of carbon fiber composite materials are gradually emerging. The continuous sucker rod produced by carbon fiber reinforced composite materials can reach up to 5000 meters, successfully overcoming the shortcomings of the past sucker rods that require sleeve rod connection, long drilling time, easy corrosion of metal rods, short service life, and high power consumption during operation. At present, it has been applied in 545 wells in 94 blocks of the five major oil fields in China, with direct economic benefits of 245 million yuan. The application effect of this material in three aspects, deep pumping and oil increase, energy saving and consumption reduction, and anti-corrosion and life extension, is remarkable. It is a revolutionary technical upgrade of the oil field production system, and plays a role in promoting the development of my country's oil production industry and the improvement of technical level.