Oilfield specific oil resistant rubber hose
In the field of oil exploitation and transportation, oil resistant rubber hose and anti-aging high-pressure steel wire hose for oil transportation, as key equipment, undertake the important task of transporting high-temperature, high-pressure and corrosive media. Its excellent oil resistance, anti-aging performance and high-strength structural design make it a core component to ensure the safety and efficiency of oilfield production.
Structural Design and Material Characteristics
Oilfield specific oil resistant rubber hoses typically adopt a multi-layer composite structure, with a core design consisting of an inner layer of oil resistant rubber, a middle reinforcement layer, and an outer protective layer. The inner layer is often made of synthetic rubber materials such as nitrile rubber (NBR), which can significantly improve the anti swelling ability of hydrocarbon media such as gasoline and diesel by optimizing the acrylonitrile content. The intermediate reinforcement layer is mainly woven or wrapped with high-strength steel wire, forming a three-dimensional mesh support structure through multi-layer cross layout, effectively dispersing the internal pressure of the pipeline and improving its tensile strength. The outer protective layer is made of weather resistant chloroprene rubber or polyurethane material to resist the erosion of ultraviolet rays, ozone, and extreme weather conditions.
The aging resistant steel wire hose for high-pressure petroleum transportation further strengthens the durability design on this basis. The steel wire reinforcement layer adopts high carbon steel wire and undergoes special heat treatment process to form a strong chemical bond between the steel wire and the rubber matrix, thereby improving the fatigue resistance performance. At the same time, anti-aging agent and flame retardant are added to the outer layer material to slow down the aging rate of materials under high temperature and high pressure by inhibiting the free radical chain reaction. Some products also adopt a double-layer steel wire winding structure, which enables the minimum burst pressure of the pipe to reach more than three times the working pressure, significantly improving safety.
Performance advantages and application scenarios
The core performance advantages of the two types of hoses are mainly reflected in three aspects: medium resistance, mechanical strength, and service life. The oil resistant rubber hose can withstand high temperatures above 100 ℃ for a long time and maintain flexibility in a wide temperature range of -40 ℃ to+120 ℃. The permeability of the inner rubber to gasoline and diesel is less than 0.1g/m ² · 24h, effectively avoiding medium leakage. The steel wire hose achieves a high pressure bearing capacity of 10MPa to 35MPa by optimizing the diameter and winding density of the steel wire. Its bending radius can reach 6-8 times the diameter of the pipe, which is suitable for complex pipeline layout requirements.
In oilfield applications, oil resistant rubber hoses are mainly used for crude oil transportation from wellhead to gathering stations. Their oil resistance can prevent pipe wall expansion and rupture caused by medium infiltration; Wire hose is widely used in high-pressure water injection, fracturing fluid transmission and other scenarios, and its anti-aging performance ensures long-term stable operation in harsh environments such as saline alkali land and desert. In addition, both types of hoses have undergone strict quality testing and meet industry standards, meeting the stringent requirements for safety and reliability of oilfield equipment.
Key points for installation and maintenance
During the installation process, special attention should be paid to the bending radius and support spacing of the pipes. The minimum bending radius of the steel wire hose should not be less than 8 times the diameter of the pipe to avoid excessive bending that may cause the steel wire layer to break; For oil resistant rubber hoses, it is necessary to ensure that the distance between support points does not exceed 1.5m to prevent stress concentration caused by the sagging of the pipe due to its own weight. In terms of connection method, it is recommended to use flange connection or quick connector, and use sealing tape to ensure that the interface is leak free.
Daily maintenance requires regular inspection of the surface of the pipe for cracks, bulges, or exposed steel wires, with a focus on monitoring the hardness changes of the outer rubber layer (if the Shore A hardness changes by more than 10 degrees, it needs to be replaced). For pipe sections exposed to ultraviolet light for a long time, it is recommended to conduct anti-aging performance test every 2 years. In addition, it is necessary to avoid contact between the pipe and sharp objects to prevent scratching the outer protective layer, and regularly clean the internal dirt to reduce flow resistance.