Oil Pipe

Introduction to Tubing Products
1、 General Overview
Oil Pipe, also known as oil pipeline or oil transmission pipeline, is an important pipeline equipment used in the exploitation, transportation, storage and distribution of oil and natural gas. The primary function of tubing is to carry and transport oil, gas, and related products to ensure safe and efficient transfer of oil or gas from a production well to a refinery or end-user. The material, size, pressure resistance and corrosion resistance of oil pipes are directly related to the safety and reliability of oil and gas transportation.
With increasing global energy demand, tubing plays an increasingly important role in the oil and gas industry. Modern oil pipelines not only have basic transmission functions, but also require stable operation under various severe conditions such as complex geological conditions, extreme climate and deep-sea environment. Therefore, the technical R&D and production requirements for tubing are becoming increasingly stringent.
2、 Classification of Tubing
Tubing can be divided into several types according to different service environment and functional requirements:
Drill Pipe
Drillpipe is used for the drilling process of an oil and gas well and is usually used to connect the drill bit to the drilling equipment. Drilling pipe is subject to huge pressure and mechanical impact, so it is usually made of high-strength alloy steel.
Production Pipe
Well tubing is used in the production of oil and gas and is usually installed downhole to transfer oil, gas, or other fluids produced underground. They require strong corrosion resistance and pressure resistance to adapt to complex downhole environment.
Pipeline (pipeline)
Oil pipelines are used to transport oil or gas over long distances, often across multiple regions and even across the ocean. This type of tubing has a large diameter and usually requires high corrosion resistance, pressure resistance and frost resistance.
Pipe fittings
Fittings of oil pipes include various connectors, valves, flanges, joints, etc. These fittings are used for connection and adjustment between oil pipes to ensure the tightness and safety of the entire oil pipe system.
Polymer coated tubing
The tubing is coated with a polymer coating to enhance corrosion resistance and extend tubing life. It is mainly used for pipelines transporting corrosive oil, gas and other chemical substances.
3、 Main material of oil pipe
The material of tubing directly affects its strength, durability, and suitability for the environment. Common tubing materials include:
Carbon steel pipe
Carbon steel is the most common tubing material with high strength and durability, suitable for general oil and gas transportation applications. Carbon steel tubing is relatively inexpensive, but has poor corrosion resistance and is susceptible to corrosion by acidic gases or seawater, so surface coatings or other protective measures are often required to improve corrosion resistance.
Alloy steel pipe
Alloy steel pipes are added with a certain proportion of alloy elements on the basis of carbon steel, such as chromium, nickel, molybdenum, etc., to improve the high temperature resistance, corrosion resistance and compression resistance of oil pipes. Suitable for use in high temperature, high pressure and aggressive environments.
Stainless steel pipe
With strong corrosion resistance, stainless steel is suitable for long-term use in acid, alkaline, seawater and other harsh environments. Although stainless steel tubing is expensive, it is unmatched for durability and long term stability.
Polyethylene (PE) pipe
Polyethylene pipes are commonly used in some low pressure and oil and gas transportation systems that do not have to withstand extreme environments. Their advantages are strong corrosion resistance, light weight, ease of transport and installation, but generally not suitable for high pressure and high temperature environments.
Glass reinforced plastic pipe (FRP)
FRP pipes are mainly used to transport highly corrosive oil and gas or chemical liquids, characterized by corrosion resistance, wear resistance, impact resistance and light weight. FRP pipes are commonly used for secondary transportation of oil and gas and internal pipelines of refineries.
4、 Tubing Performance Requirements
Tubing shall be designed and manufactured to meet the following main performance requirements:
Withstand voltage performance
During use, the tubing shall bear high pressure from inside and outside, such as downhole pressure, pressure generated during oil and gas flow, etc. Therefore, the tubing must have sufficient pressure resistance to prevent rupture or leakage.
Resistance to corrosion
Oil and natural gas often contain a lot of sulfide, chloride, carbon dioxide and other corrosive substances. The oil pipe must have a very strong anti-corrosion capacity, especially in wet and acidic environment, to avoid rust or corrosion on the pipe surface.
Temperature resistance performance
The temperature changes greatly during oil and gas exploitation and transportation. The oil pipe needs to operate stably in high temperature and low temperature environment for a long time to avoid pipe damage caused by thermal expansion or contraction.
Resistance to Abrasion
In the process of oil and gas flowing in the pipeline, sand particles, sediments and other substances may be carried, and long-term friction may cause pipeline abrasion. Therefore, tubing materials require high wear resistance.
Mechanical strength and tensile properties
In oil and gas wells and oil pipelines, the tubing often needs to withstand strong external tension and impact, especially in deep sea and extreme conditions, so its mechanical strength and tensile property are very important.
5、 Application of tubing
Tubing is widely used in the oil and gas industry and other energy fields, mainly including the following aspects:
Oil production £» oil production
Tubing is used to extract oil from the ground to the surface, particularly in complex environments such as deep wells and subsea fields.
Natural gas transmission
Oil pipes are also widely used in long-distance transportation of natural gas, especially in transnational and cross-sea transmission pipelines, to ensure that natural gas can reach the terminal efficiently and safely.
Chemical industry
Petrochemical plants and refineries also use a large number of oil pipes, which are used in petroleum refining, chemical transportation and other process flows.
Offshore oil and gas production
In the process of offshore oil and gas exploitation, the oil pipe must adapt to the high pressure, low temperature and other challenges of the deep-sea environment to ensure the stable transmission of oil and gas.
Transport and storage
Oil pipes are also widely used in the storage and transportation of oil, such as the connecting pipes between oil storage tanks, oil pipelines of oil carriers, etc.
6、 Summary of Summary
Tubing is one of the indispensable infrastructures in the modern oil and gas industry. Its design, material selection, manufacturing process and application performance directly affect the safe transportation of oil and gas. With the continuous growth of global energy demand and technological progress, oil pipe products are developing towards higher standards and more complex functional directions to meet the application requirements in different fields and environments. In the future, tubing will continue to play a critical role in the energy supply chain as oil and gas production continues to grow.