Seamless Steel Pipe

Xinyue Steel Group is a leading global supplier of high-quality steel pipes for various applications, including oil and gas drilling operations. In the Brazilian market, Xinyue’s casing pipes for oil and gas operations have been in high demand due to their superior quality and reliability. Casing pipes are an essential component of oil and gas drilling operations, as they protect the wellbore from external damage and help maintain the integrity of the drilling process. Xinyue’s casing pipes are designed to meet the stringent requirements of the API 5CT standard, which specifies the technical specifications for steel casing pipes used in oil and gas drilling. Brazil is a significant market for Xinyue’s casing pipes, as the country is one of the largest producers and exporters of oil and gas in the world. The Brazilian oil and gas industry has been growing steadily over the years, and with the discovery of new oil reserves in the pre-salt layer of the Atlantic Ocean, the demand for high-...

 　　The drill pipe string will hit and wear the casing seriously during drilling. If there is a problem with the casing string in the hole, it will cause serious accidents in the hole, or even scrap Therefore, the quality of the drilled casing string must meet the following requirements. 　　1. Material requirements 　　The material of seamless steel pipe is generally selected according to parameters such as casing depth and quality. 　　When choosing the casing material, the quality of the casing string should also be considered. When the casing quality is less than 10t, ordinary low carbon steel grade can be selected; for 10-20t, steel grade DZ40～DZ50 should be selected; for ≥20t, steel grade above DZ50 should be selected. In addition, the material of the casing joint should be one level higher than the steel grade requirement of the casing body. 　　2. Casing bending requirements 　　The curvature of the casing means that the casing is curved in the length direction, expressed by the measu...

    Oil casing drilling is also called percussion drilling. The steel wire rope is used to send the drill bit to the bottom of the well, and the beam mechanism is driven by the driving force to make one end of the beam move up and down, and the steel wire rope and the drill bit are impacted up and down, so that the rock is broken. The drilling speed of the Dayton drill is generally relatively slow, and the efficiency is very low, which can not adapt to the increasing depth of the well and the complicated formation drilling requirements, so it has been gradually replaced by rotary drilling. However, its equipment is relatively simple, its cost is low, and it will not pollute the oil layer. It can be used in some shallow low-pressure oil and gas wells and lost wells. Downhole power drilling is the use of downhole power drilling tools to drive the drill bit to break the rock. The drill string does not rotate during drilling, its wear is relatively small, and the service life is l...

　　OCTG pipe refers to Oil Country Tubular Goods,a collection of rolled metal products, more commonly known as Drill pipe, Casing and Tubing which are manufactured according to API Specification and are used both onshore and offshore in petroleum industry. This severe corrosion environment requires the pipe with high corrosion resistance and crush resistance especially for geological complex areas, the performance of coating has higher requirements. According to the specific application of anti-corrosion coating and the different corrosion environment, it can be divided into drilling pipe internal coating, oil casing internal coating and interrnal/outside coating of oil transport pipe. 　　The high temperature and high pressure resistance test of petroleum casing pipe coating is a standard laboratory method developed with reference to the standard NACE TM 0185, which can be used to test the quality of coating on steel pipe. This experiment is carried out in the autoclave under certain c...

　　In order to maintain a stable heat treatment product during the induction heat rapid heat treatment process, the following measures should be taken on the production line: 　　(1) The casing plant adopts the technology of continuous heating of steel bridges and uses bridging technology to improve the phenomenon of low steel temperature and increase steel production. A computer is used to control the head and tail of the steel; dual-frequency power is used to control the temperature at the end of the steel pipe; rotary joints are used to achieve great progress, etc. to increase the longitudinal temperature uniformity of the steel. 　　(2) Advanced steel conveyors are used to ensure uniform steel speeds. Steel tubes and large bars should rotate at a constant speed. The transmission mechanism should use variable frequency drive to improve the stability and reliability of the mechanism. This is one of the important conditions for ensuring that the longitudinal temperature of the phase ma...

　　Comparing to other steel grades, casing pipes of grades J55, K55 are a popular choice for wells without stringent anti-corrosion or strength requirements. Here, we will introduce you the difference between K55 and J55. 　　Chemical composition and physical properties 　　API grade K55 has the same Chemical composition as grade J55, both of them has the same yield, but its minimum tensile strength is about 26% higher compared to J55. 　　 J55 　　Yield strength: 379-552 MPa (55-80 ksi), 　　Minimum tensile strength: 517 MPa (75 ksi) 　 　K55 　　Yield strength: 379-552 MPa (55-80 ksi), 　　Minimum tensile strength: 665 MPa (95 ksi) 　　Heat treatment (PSL2 and PSL1 are different) 　　API 5CT J55 PSL1 and API 5CT K55 PSL2 is the same (Rolling delivery); 　　PSL2 :J55 and K55 should be normalized or normalized and tempered. If thickened, normalizing or normalizing and tempering should be added after thickening. 　　 Impact test (PSL2 and PSL1 are different) 　　Tubing: PSL1, J55 and K5...

    OCTG pipe refers to Oil Country Tubular Goods, a collection of rolled metal products, more commonly known as drill pipe, casing and tubing which are manufactured according to API specification. It used both onshore and offshoreiIn petroleum industry.     Drill pipe is a seamless tube that rotates the drill bit and circulates drilling fluid. It is hollow to allow drilling fluid to be pumped down the hole through the bit and back up the annulus. The annulus of an oil well is the space between any piping tubing or casing and the piping, tubing or casing immediately surrounding it. The presence of an annulus gives the ability to circulate fluid in the well. Drill pipe is subjected to high torque by drilling, axial tension by its dead weight and internal pressure by purging of drilling fluid.     Tubing is the pipe that goes inside the casing pipe. This is the pipe that the oil itself will eventually make its way out of. The most simplistic of the OCTG f...