Briefly Understand the N80 Oil Casing

    N80 casing pipe is an important equipment for oil drilling. The main equipment includes drill pipe, core tube and casing, drill collar, and small diameter drill pipe. Domestic oil casings are made of hot rolled or cold drawn steel and used for geological drilling. The steel grade is represented by "Geology" (DZ), and there are commonly used casing steel grades such as DZ40, DZ55 and DZ753.

    1.N80 petroleum casing application

    It is mainly used to support the well wall during and after drilling to ensure the normal progress of the drilling process and to ensure the normal operation of the entire oil well after drilling.

    2. Specification of N80 petroleum casing

    SY / T6194-96 stipulates that the length of oil casings made in China is variable, with a range of 8m / 13m, but casings of not less than 6m can be provided, and the number should not exceed 20%.

    3. Types of N80 petroleum casing

    According to the SY / T6194-96 "Petroleum Casing" standard, the types and packaging of petroleum casings are divided into two categories: short-thread casings and their couplings and long-thread casings and their couplings. According to SY / T6194-96, household casings should be bundled with steel wire or steel belt. The exposed part of the thread of each sleeve and coupling should be tightened with a protective ring to protect the thread.

    4. Appearance of N80 petroleum casing

    The inner and outer surfaces of the oil casing shell should be free of folds, hairline, delamination, cracks, creases and crusts. These defects should be completely removed, and the removal depth should not exceed 12.5% of the nominal wall thickness.

    5. Quality of N80 petroleum casing

    The surface of the casing and the connecting thread should be smooth, and there should be no burrs, tears or other defects sufficient to cause the thread to break and affect the strength and tight connection.

    http://www.xysteelpipe.com/info/Briefly-Understand-the-N80-Oil-Casing-1676-1.htm

评论

发表评论

此博客中的热门博文

SMLS steel pipe for Tanzania Gas pipeline project

图片
Project location: Tanzania Product：SMLS steel pipe Specification：168.3mm*14.27mm*SDR Standard and material：API 5L X52N PSL2 Application: Gas pipeline project In the last week of September, we received a new inquiry from regular customer who stated that it would take 4 weeks for delivery, including anti-corrosion. We learned that the fast delivery is most important point for this order. Xinyue people responded the fastest. Due to this order is for X52N PSL2 G high-grade seamless pipes, the stock quantity cannot meet the quantity of the entire order. With the strong resource integration ability of Xinyue, we found the production schedule of the steel pipe factory within 3 days and quickly organized new production. The customer arranges full process supervision from end customers, contractor customers, intermediate customers, and third parties from raw materials to the factory. During the supervision process of steel pipe production, they all witness the online UT test, Hydrostatic test, ...
阅读全文

Treatment method of steel pipe welding slag inclusion

What is welding slag inclusion? Welded pipe slag inclusions are slag that remains inside the weld. Welding slag inclusions are generally divided into two categories: The first category is metal slag inclusions. The second category is non-metallic slag, which refers to the slag remaining in the weld after welding, including electrode coating or flux, sulfide, oxide and nitride. According to its formation, it can be divided into point-like slag inclusions, linear slag inclusions, chain-like slag inclusions and dense slag inclusions. Slag inclusions will reduce the plasticity and toughness of steel pipe welds, and slag inclusions with sharp corners will cause stress concentration at the tip, and the tip will develop into a crack source, especially in welds with a large tendency to air quenching. Under the action of stress on the steel pipe, cracks will first appear at the slag inclusions in the weld and develop along the way, resulting in a decrease in strength and cracking of the weld. T...
阅读全文

ERW Steel Pipe Deliver to Argentina for oil and gas pipeline

图片
Project location：Argentina Product：ERW Steel Pipe Standard and material：API 5L PSL2 46th GR.X60M Specifications： OD: 457.2mm WT: 9.52mm Lenght:12M Application：oil and gas pipeline In the steel industry, customer demands vary, but quality and delivery time are always the most critical factors. Recently, Xinyue successfully provided a high-quality ERW pipe solution for a customer, and the entire process took only half a month, perfectly demonstrating our ability to respond quickly and execute efficiently. Although the customer’s order quantity was small, the steel grade requirements for the pipes were very high, and the supplier had to be listed in the client’s approved supplier directory. Facing such strict requirements, Xinyue mobilized all available resources and actively engaged with major suppliers. Ultimately, we successfully sourced BaoSteel’s inventory, which perfectly met the steel grade and quality requirements, and ensured on-time delivery. From receiving the inquiry to finali...
阅读全文