Manguera para fracturación ácida API 7K ultrarresistente a la abrasión
In the key links of oil and gas resource development, acid fracturing operations pose stringent requirements for the wear - resistance and corrosion - resistance of equipment. The API 7K series ultra - wear - resistant acid fracturing hoses developed by Letone Technology, with their excellent material technology and structural design, have become the core equipment for solving the problems of fluid transportation under high - pressure and highly corrosive working conditions, providing reliable guarantee for the efficient construction of petroleum engineering.
This series of hoses strictly follows the API Spec 7K "Specification for Drilling and Well Servicing Equipment" standard. In terms of material selection, it adopts a composite structure of imported ultra - high - molecular - weight polyethylene (UHMWPE) inner tube and special synthetic rubber. The inner tube layer has an extremely low coefficient of friction and excellent wear - resistance. Its wear life is 3 - 5 times longer than that of traditional rubber hoses, which can effectively resist the high - speed scouring of sand - containing particles in the acid fracturing fluid. The outer layer is made of weather - resistant nitrile - butadiene rubber, which has the properties of ozone - aging resistance, high - and low - temperature resistance (-40°C to 120°C), and anti - extrusion, adapting to complex working environments such as deserts and oceans.
In terms of structural design, the hose adopts the "multi - layer reinforcement + optimized braiding" technology. The reinforcement layer is braided by high - strength steel wires at a specific angle, and the burst pressure reaches over 150MPa, meeting the high - pressure requirements of fracturing construction in deep oil and gas wells. At the same time, through accurate calculation of the braiding density and angle, a low expansion rate (< 1%) of the hose under high pressure is achieved, ensuring the stability of fluid transportation. In addition, the API - standard connectors configured at both ends of the hose adopt an integral forging process. The sealing surface is precisely processed and matched with special sealant to effectively prevent high - pressure fluid leakage and ensure construction safety.
In performance tests, this hose has passed multiple extreme - condition verifications: in the fracturing fluid circulation test containing 15% quartz sand, it ran continuously for 500 hours without significant wear; in a strong acid - strong alkali environment with a pH value of 2 - 13, its performance retention rate exceeded 90%; after 100,000 bending fatigue tests, its structural integrity remained good. These data fully demonstrate its reliability in long - term high - intensity operations.
The application of Letone Technology's API 7K series hoses has significantly improved the efficiency and economy of acid fracturing operations. Compared with traditional metal pipelines, its weight is reduced by 60%, which can greatly reduce the transportation and installation costs of equipment. Its flexible structure allows for a larger bending angle, adapting to the complex layout of the well site, reducing pipeline connection points, and lowering the leakage risk. At present, this product has been widely used in domestic oil and gas fields such as Changqing and Sichuan, and has been exported to regions such as Russia and the Middle East, becoming the preferred equipment in the international petroleum engineering field.
With the development of oil and gas exploration towards deep and ultra - deep layers, the performance requirements for fracturing equipment continue to be upgraded. Letone Technology will continue to focus on material innovation, combine finite - element analysis with intelligent production technology, and further optimize the temperature - resistance, pressure - resistance, and fatigue - resistance of the hoses to provide more competitive solutions for the energy development industry.
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