Pipeline engineering is the construction of pipelines for transporting oil, natural gas and solid slurry. Including pipeline line engineering, station depot engineering and pipeline ancillary engineering. In a broad sense, pipeline engineering also includes the supply of equipment and equipment.
Classification of pipeline engineering
(1) Pipeline body engineering
That is, a project that is welded into a whole by pipes and pipe fittings.
(2) Pipeline protection structure engineering
Including pipeline inner and outer wall anticorrosion, pipeline insulation and other projects. The common method of pipeline anticorrosion is coating anticorrosion plus cathodic protection.
(3) Pipeline crossing project
Including projects crossing railways and highways, projects crossing rivers and canyons, tunnel projects crossing mountains, projects crossing unfavorable geological areas, etc.
(4) Line ancillary works
The characteristics of pipeline engineering mainly include:
(1) Strong comprehensiveness
Pipeline engineering is a comprehensive project that applies a variety of modern science and technology, including a large number of general construction and installation projects, as well as some specialized engineering buildings, professional equipment and construction techniques. A pipeline consumes hundreds of thousands of tons or even millions of tons of steel, and the investment sometimes requires billions of dollars. The scale of the project is very large, and it is regarded as a large-scale and comprehensive industrial construction project by countries all over the world.
(2) High complexity
Large-scale octg pipes and gas pipelines are often thousands of kilometers long. Along the way, they may have to climb mountains, cross rivers and rivers, or cross extremely difficult swamps, and some have to pass through desert areas. In addition, pipeline projects are closely related to urban and rural construction, water conservancy planning, energy supply, comprehensive transportation, environmental protection and ecological balance in the areas they pass. Moreover, organizing construction on a construction line of thousands of kilometers requires solving a large number of temporary problems. Such as material supply, transportation vehicles, road construction, water supply, power supply, communication, construction of pipeline prefabrication plants, and living security, etc., all of which make pipeline engineering more complicated.
(3) Strong technical
Pipeline engineering is a modern engineering with strong technicality. The pipeline itself and the equipment used must ensure that it can safely and continuously transport flammable and explosive oil and gas under relatively high pressure. The properties of various oils and gases are different, so the pipeline must meet the requirements of different transportation processes. For example, pipelines for transporting natural gas and crude oil need to undergo pretreatment such as desulfurization or dehydration, and pipelines for transporting condensable and highly viscous crude oil need to be heated or heat treated. The environment of pipeline laying varies greatly, and targeted disposal measures are required, such as heat insulation in permafrost areas, sand fixation in desert areas, crossing or crossing of large rivers, and stabilization of pipelines in deep sea water, etc. These technical issues are very complex and require multi-disciplinary and multi-disciplinary solutions.
(4) High strictness
The quality of pipeline engineering must strictly meet the requirements of design and specification. Thousands of kilometers long pipeline system, under the condition of frequent changes in working conditions, requires the pipeline to be in the best operating condition at all times in order to operate continuously, efficiently and safely for a long time.
Tips: Most of the casings used for pipeline transportation are seamless pipes, because seamless pipes are perforated from the whole round steel, have no welds, high pressure resistance and good toughness.
Classification of pipeline engineering
(1) Pipeline body engineering
That is, a project that is welded into a whole by pipes and pipe fittings.
(2) Pipeline protection structure engineering
Including pipeline inner and outer wall anticorrosion, pipeline insulation and other projects. The common method of pipeline anticorrosion is coating anticorrosion plus cathodic protection.
(3) Pipeline crossing project
Including projects crossing railways and highways, projects crossing rivers and canyons, tunnel projects crossing mountains, projects crossing unfavorable geological areas, etc.
(4) Line ancillary works
The characteristics of pipeline engineering mainly include:
(1) Strong comprehensiveness
Pipeline engineering is a comprehensive project that applies a variety of modern science and technology, including a large number of general construction and installation projects, as well as some specialized engineering buildings, professional equipment and construction techniques. A pipeline consumes hundreds of thousands of tons or even millions of tons of steel, and the investment sometimes requires billions of dollars. The scale of the project is very large, and it is regarded as a large-scale and comprehensive industrial construction project by countries all over the world.
(2) High complexity
Large-scale octg pipes and gas pipelines are often thousands of kilometers long. Along the way, they may have to climb mountains, cross rivers and rivers, or cross extremely difficult swamps, and some have to pass through desert areas. In addition, pipeline projects are closely related to urban and rural construction, water conservancy planning, energy supply, comprehensive transportation, environmental protection and ecological balance in the areas they pass. Moreover, organizing construction on a construction line of thousands of kilometers requires solving a large number of temporary problems. Such as material supply, transportation vehicles, road construction, water supply, power supply, communication, construction of pipeline prefabrication plants, and living security, etc., all of which make pipeline engineering more complicated.
(3) Strong technical
Pipeline engineering is a modern engineering with strong technicality. The pipeline itself and the equipment used must ensure that it can safely and continuously transport flammable and explosive oil and gas under relatively high pressure. The properties of various oils and gases are different, so the pipeline must meet the requirements of different transportation processes. For example, pipelines for transporting natural gas and crude oil need to undergo pretreatment such as desulfurization or dehydration, and pipelines for transporting condensable and highly viscous crude oil need to be heated or heat treated. The environment of pipeline laying varies greatly, and targeted disposal measures are required, such as heat insulation in permafrost areas, sand fixation in desert areas, crossing or crossing of large rivers, and stabilization of pipelines in deep sea water, etc. These technical issues are very complex and require multi-disciplinary and multi-disciplinary solutions.
(4) High strictness
The quality of pipeline engineering must strictly meet the requirements of design and specification. Thousands of kilometers long pipeline system, under the condition of frequent changes in working conditions, requires the pipeline to be in the best operating condition at all times in order to operate continuously, efficiently and safely for a long time.
Tips: Most of the casings used for pipeline transportation are seamless pipes, because seamless pipes are perforated from the whole round steel, have no welds, high pressure resistance and good toughness.
