Baoji Steel Pipe has developed the world’s strongest continuous coiled tubing

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China Chemical Industry News, 4 hours ago: On August 9, reporters learned from Baoji Petroleum Steel Pipe Co., Ltd. that the CT150 coiled tubing developed by the company through independent research has been successfully prototyped, and testing in actual drilling conditions is planned. This is the highest-strength coiled tubing in the world at present, indicating that our country is at the leading level globally in this field. 　　**Bi Zongyue, former deputy director of the Oil and Gas Pipeline Engineering Technology Research Center and the company’s top technical expert at Baoji Steel Pipe Company, told reporters that as exploration and development of shale oil and gas intensify, operations such as work on high-pressure/ultra-high-pressure and ultra-long horizontal wells, drilling, and segmented fracturing place increasing demands on the strength and toughness of coiled tubing. By collaborating with steel metallurgy enterprises, Baoji Steel Pipe overcame the challenges posed by raw material shortages and broke through the core technologies involved in tube manufacturing, ultimately developing the CT150 continuous tube, which boasts high strength, high toughness, and high plasticity. This product is designed for use in wells with depths of 5,000 to 8,000 meters, where the horizontal section can be up to 4,000 meters long. It operates at fracturing pressures of over 100 MPa, resulting in significantly improved operational efficiency and lifespan, and it helps to greatly reduce the production costs of oil fields. According to the **Petroleum Pipe Materials Quality Supervision and Testing Center, the yield strength of CT150 coiled tubing averages 1130 MPa, while its tensile strength is 1160 MPa. 　　As the largest manufacturer in China’s oil and gas pipeline sector, Baoji Steel Pipe Company leverages the advantages of its Oil and Gas Pipeline Research Center to pursue continuous innovation. It has overcome five key core technologies related to coiled tubing, and over 10 years ago it built the world’s third and Asia’s first coiled tubing production line. This achievement has played a vital role in complex oil and gas exploration and development, enabling China to become the second country after the United States to master the core technologies for coiled tubing and to carry out industrial-scale production of such products. The company’s coiled tubing has been recognized as a **key new product**; it has become a powerful tool in China’s petroleum equipment technology sector, fully replacing imported products. 　　It is understood that coiled tubing is a high-end petroleum piping material without connecting threads, with a single length that can reach tens of thousands of meters. It is primarily used for work such as well repair, logging, drilling, and completion, and is known as the \"hand for oil and gas\" of multi-functional drilling equipment. Last year, Baoji Steel Pipe developed a new type of ultra-high-strength CT130 coiled tubing, which features high resistance to internal and external pressures, high stiffness, high torque capacity, and a long service life under cyclic loading. To date, the company has developed a range of coiled tubing products including CT70, CT80, CT110, and CT130. They have also introduced continuous tubes made of corrosion-resistant alloys such as duplex stainless steel and austenitic stainless steel, which effectively address the safety risks associated with oil and gas well operations in corrosive environments and significantly extend the service life of the pipe strings. 　　Bi Zongyue said that in the next step, they will research and develop high-temperature resistant, enhanced non-metallic composite pipes, as well as intelligent coiled tubing, in order to make the systems for oil extraction underground, oil collection on the surface, and oil transportation underground smarter and more intelligent.