According to the forecast of the International Energy Agency (IEA), oil will still account for about 32% of the global energy consumption structure by 2030. With the development of the petroleum industry, the demand for oil well pipes is also increasing day by day. Among oilfield equipment assets, oil well pipes account for 60%, damage to the drill string or casing string sometimes results in well retirement. According to statistics from the International Drilling Contractors Association, the average direct cost of a gas drill string breakage accident is US$106,000. Taking the oil fields in western my country as an example, the cost of an oil well is about tens or even hundreds of millions of yuan. Moreover, there are about 1,000 drill string breakage accidents in my country every year.
What is oil well pipe?
Oil well pipes are the foundation of the petroleum industry and occupy a vital position in the petroleum industry. They are used in large quantities and consume high. The safety, reliability, service life and economy of oil well pipes have an extremely significant impact on the petroleum industry. Oil well pipe is a special pipe material for oil drilling, mainly including casing pipe, oil pipe and drill string components (drill pipe, drill collar, kelly, home drill pipe, etc.).
Oil pipes are pipes for pumping oil. After the well is drilled, the oil pipes are set in casing. There are two types of oil pipes: thickened type and flat type. Under normal circumstances, oil pipes are reusable, but they cannot be used more than three times. When problems occur, they should be replaced in time, which will only cost part of the time and labor costs. The diameter range of the oil pipe is 60.3 ~ 114. 3mm, and the wall is 4. 83 ~ 6.88mm.
Oil pipes are pipes for pumping oil. After the well is drilled, the oil pipes are set in casing. There are two types of oil pipes: thickened type and flat type. Under normal circumstances, oil pipes are reusable, but they cannot be used more than three times. When problems occur, they should be replaced in time, which will only cost part of the time and labor costs. The diameter range of the oil pipe is 60.3~~114.3mm, and the wall thickness is 4.83~6.88mm.
Casing is a steel pipe used as the wall of oil and gas wells. Casing can be divided into conduit, surface casing, technical casing and oil layer casing according to usage. In order to shorten the downhole time of casing, the casing is threaded. To drill a well, multiple layers of casing are generally used depending on the drilling depth and geological conditions. Therefore, the consumption of casing accounts for more than 70% of all oil well pipes. Casing is a one-time use material. If there is a problem, the entire oil well will be scrapped, and the loss will be tens of millions or even hundreds of millions of yuan. Therefore, the reliability requirements for the product are extremely strict. It can be said that the life of the casing directly determines the life of the oil well, and the life of the oil well determines the life of the oil field.
What is a high-quality and qualified oil well pipe? How to choose?
Oil pipe strings and casing strings usually have to withstand internal and external pressures of hundreds or even thousands of atmospheres, tensile loads of hundreds of tons, as well as high temperatures and harsh corrosive media. According to statistics and analysis of well depth trends of internationally produced oil and gas wells by the U.S. Department of Energy, the average well depth of global oil and gas has doubled since 1978, and continues to grow rapidly. As the well depth increases and the temperature and pressure increase, many newer and higher requirements are put forward for oil well pipes. It can be said that the working conditions of oil well pipes have become worse.
In view of the harsh service conditions of oil well pipes, it is safer to choose products from established companies or companies with strong professional capabilities, because these are often the most technologically advanced and reputable steel companies. For example, Baosteel Group, a giant in the steel industry, or Shanghai Tianyang Steel Pipe Co., Ltd., a small giant that leads the field of composite steel pipes. The latter produces metallurgical composite oil well pipes with a bonding strength of more than 210MPa and a bonding rate of 100%, completely solving the problem of ordinary mechanical composite pipes. There is a problem of low inter-layer bonding force. According to preliminary predictions, the demand for non-API steel grades in the future may reach 35%, and the demand for oil well pipes with special threaded joints may reach about 25%. The working conditions of oil well pipes will become even worse in the region. It can be seen that the high-end oil well pipe related industries still have prospects in the future. broad.
