LSAW Steel Pipe

    1. Reduce the time of starting and drilling. It is about 5-10 times faster to replace the drill bit with a wire rope than with a conventional drill pipe .     2. Save on the purchase, transportation, inspection, maintenance and replacement costs related to drill pipes and drill collars;     3, because there is always a casing in the well-bore, there is no longer the pumping effect on the well-bore when the drill pipe is lowered, which improves the well control situation;     4. Eliminate the pumping effect and pressure pulsation caused by the lower drill pipe;     5. When the drill bit is lifted with a wire rope, the mud can be continuously circulated, which can prevent the accumulation of cuttings and reduce the occurrence of well surge;     6. Improved annulus return speed and well-bore cleaning. When the mud is pumped into the casing, its inner diameter is larger than that of the drill pipe, which reduces hydra...

　　The oil casing pipe is used to support the oil and gas well walls to ensure the normal operation of the entire well after the drilling process is completed. Each well is based on different depths of drilling and geology, using several layers of casing. After the casing is down, the cement is to be cemented. It is different from the oil pipe and the drill pipe and cannot be reused. It is a disposable material. Therefore, the consumption of casing accounts for more than 70% of all oil well pipes. 　　The oil special pipe is mainly used for drilling oil and gas wells and conveying oil and gas. It includes oil drill pipes, oil casings, and oil pipes. Oil drill pipes are mainly used to connect drill collars and drill bits and transmit drilling power. The oil casing is mainly used for supporting the well wall during and after the completion of the drilling process to ensure the drilling process and the normal operation of the entire well after completion. The oil pipe mainly transports th...

　　The API standard is short for the American Petroleum Institute. It is one of the production standards for oil pipeline steel pipes. It also includes API5L ASME A53 and some other standards. 　　The oil casing is an important equipment for oil drilling. Its main equipment also includes drill pipe , core pipe and casing, drill collar and steel pipe for small diameter drilling. 　　Tubing specifications: 8-1240 × 1-200mm 　　Standard: 　　API SPEC 5CT - American Petroleum Institute Standard 　　SYT 6194-2003 — Oil and gas industry, oil and gas well casing or tubing for oil pipe 　　Use: Pipes that are used in production or liquid injection 　　The main production of steel pipe grade: J55, K55, N80, L80, P110, etc. 　　Tubing classification: non-thickening tubing (NU), outer thickening tubing (EU), integral joint tubing (IJ) 　　In the API5CT, the casing and tubing are divided into 4 groups and 19 steel grades. According to the manufacturing method, it is divided into two categories: sea...

　　Heavy-weight drill pipe is made from AISI 4145H steel, after all the heat treatment of materials, all physical properties comply with recent provisions of API specification 7. Integral heavy weight drill pipe is a common transition between the drill pipe and drill collars of the drill, which can effectively alleviate the drill collars and transition in the combined stress concentration provides drilling, and can effectively reduce the drill and the wear rate of the connection area and diameter of the borehole. Drill pipe in central part of the thickened, welding joints and thickened in the middle part of the appearance of cemented carbide wear, can effectively protect the pipe from wear and tear. In a soft case of geological formations, heavy weight drill pipe can replace the drill collar to solve a series of problems occurred in vertical drilling. Here are some characteristics and advantages of heavy-weight drill pipe: 　　1. Extra length of tool joints provides plenty of space to o...

　　1. Extra length of tool joints provides plenty of space to operate while reducingwear rate and extending the service life of the outer diameter. 　　2. In order to extend the service life of the connection, API Bore Back Box adopts the larger size, whose function is four times as large as the other entire box. 　　3. The entire centre upset protects the tube from outer diamete wear by keeping the tube away from the hole wall, while at the same time reducing the risk of differential sticking. 　　4. HWDP with the drill pipe elevator can quickly and effectively deal with the task of drilling platform. 　　5. Research shows that 95% of the cause for drill string failure can be attributed to fatigue failure. However, the structure of HWDP has high fatigue strength.

　　API standards are designed to qualify the oil and petrol industry according to the legislation and environment requirements. According to API, oil and natural gas industry can have the reference standards about its industry. Under the general standards, there are some subordinated specifications drafted for each specific OCTG product, such as API 5B, API 5CT, API 5D, API 5L and so on. 　　API 5L covers seamless and welded steel line pipe . It provide specification for pipe used in conveying gas, water, and oil in both the oil and natural gas industries. It includes standard-weight and extra-strong threaded line pipe; and standard-weight plain-end, regular-weight plain-end, special plain-end, extra-strong plain-end, special plain-end, extra-strong plain-end pipe; as as well as bell and spigot and through-the-flow line(TFL) pipe. 　　Grades covered by API 5L are A25, A, B (and the following "X" Grades), X42, X46, X52, X56, X60, X65, X70, X80. The two digit number following th...

    What Is The Classification And Grades Of Drill Pipes ?     Oil drill pipe is seamless tubing which was used to rotates the drill bit and circulates drilling fluid in the well. API spec. 5DP specifies the technical delivery conditions, size, weight, grade, material properties and other requirements for drill pipe. The standard gives us the guidelines for inspection & classification of your used drill pipe string. Dill pipe can be divided into following levels, classes and grades:     PSL-1: Specifies wall thickness, impact strength, and yield strength requirements specific to the material grade.     PSL-2: Additional mandatory requirements.     PSL-3: Additional mandatory requirements.     Drill pipe class defines the physical condition of the drill pipe in term of dimension ,surface damage and corrosion.     Class 1(New class) : Brand new (never used) and the strongest.     Premium(used...

    General chemical heat treatment of erw casing, such as carburizing, carbonitriding, carbon and nitrogen boron infiltration, respectively, are additional single component, two components and three components of the multi-parameter heat treatment.     In recent years, but also the development of a number of new technology using the erw casing chemical heat treatment, such as vacuum chemical heat treatment, fluid bed chemical heat treatment, ion osmosis metal, ion implantation, laser surface alloying, etc., can improve the erw casing wear Loss of corrosion resistance and other performance. Rare earth in the application of chemical heat treatment (ie, with rare earth infiltration), can significantly improve the rate of seepage, shorten the treatment cycle, and can improve the wear resistance and corrosion resistance of the layer, which is a major feature of our country.     In addition, the erw casing solid solution chemical heat treatment is also a no...

    Smls pipe is a kind of long steel with hollow section and no joints. Smls pipe is used for conveying fluid pipe, structure with seamless steel tubes,  compared to the solid round steel, in the bending torsional strength phase at the same time, the weight is lighter, is a kind of economic cross section steel, widely used in the manufacturing of structural and mechanical parts, such as petroleum drill pipe, auto transmission shaft, bicycle frame and construction of steel scaffolding and so on.     Smls pipe made of high quality carbon steel or alloy steel, hot-rolled, cold-rolled (pull) of the points.     Usage     1. Construction categories are: under the pipeline transport up to more, cover the floor when the extraction of groundwater, boiler hot water transport and so on.     2. Machining, bearing sets, processing machinery parts and so on.     3. Electric class: gas transmission, water generation fluid pipe...