steel pipe

    1. The thick-walled straight seam steel pipe is not allowed to be inclined when the steel wire rope is hoisted to prevent the steel wire rope from grooving.     2. Pay attention to the operation to ensure personal and equipment.     3. Always check the front and rear switches of the trolley, and whether the switch with a larger hook rise limit is good for sensitivity.     4. Lubrication points for thick-walled straight seam steel pipe gears, sprockets, chains, ropes, etc. should be refueled on schedule.     5. Operate the cantilever crane in close cooperation with the hanger and follow the hanger's command.     6. The hook should be covered with rolls.     7. The wire rope should be replaced when it is 10% broken.     8. Frequently check whether the lifting hook of the hook is sensitive.

    Installation requirements for threaded insulation joints for petroleum casing     1. Within 50 meters of the installation place of the insulation joint, avoid the dead mouth to be welded.     2. After the insulated joint is connected to the pipeline, it is not allowed to lift the pipeline within 5 meters of the joint. The pressure must be tested together with the pipeline.     3. After the insulation joint is connected to the pipeline, it should be repaired as required, and the surface temperature of the insulation joint should not be higher than 120 ° C during anticorrosion work.     4. When installing the insulation joint, it should be installed on both ends of the joint on the straight pipe section 20 meters away from the elbow and set up a bracket. When installing in the ground, avoid installing it in perennial water accumulation.     5. The center wheelbase of the joint shall be installed on the same straigh...

    The casing is a steel pipe that supports the walls of oil and gas wells. Each well will use several layers of casing according to different drilling depths and geological conditions. Cement is used to cement the casing after it goes down the well. It is different from tubing and drill pipe and cannot be reused. It is a disposable material. Therefore, the casing consumption accounts for more than 70% of all oil well pipes. The casing pipe can be divided into: casing, surface casing, technical casing and oil layer casing according to the usage.     1. Guide bush     It is mainly used for drilling in oceans and deserts to separate seawater and sand to ensure smooth drilling.     2. Surface casing     It is mainly used for the first drilling, drilling the soft ground layer to the bedrock, in order to seal this part of the formation from collapse, it needs to be sealed with surface casing.     3. Technical casing ...

    For large and sudden pipeline leakage accidents such as pipe explosion and breakage, due to the sudden pressure loss of the pipeline, it can generally be found in time, but on-site inspection is required to determine the specific location. For small leaks, leak detection technology is required. Leak detection technologies include offline detection and online monitoring.     Off-line inspection is a patrol inspection along the pipeline in a specified period or as required. It can be inspected on foot, by car, or by special aircraft. Leaks were found through observation of the ground surface, instrument detection or infrared imaging technology. Because the detection is not carried out from time to time, this method generally cannot be found in time after the leak occurs.     On-line monitoring is to use the leak monitoring system specially installed on the pipeline to dynamically monitor the pipeline, capture the leak information at the moment of the ...

    Four advantages of anticorrosive steel pipe     1. The construction is simple and the steps are quick, and the construction can be carried out on the factory and the site. Compared with the old steel pipes, the construction of anti-corrosion steel pipes is very simple. There is no need for major equipment and sites. The on-site operation is very suitable. Anti-corrosion can be carried out at the same time during the construction on the side of the site.     2. Longer life, ordinary steel pipe has a certain life. After anti-corrosion treatment of ordinary materials, its life can be as long as 20-30 years or longer, saving replacement and other costs in use.     3. The project is cheap and economical. In the case of combining the quality and life of the steel pipe, the service life and investment can reach a reasonable ratio, which is more economical and applicable than the old pipeline, which is also an important determinant of people's p...

    Carbon     It exists in all steels and is the most important hardening element.     Chromium     It increases the abrasion resistance, hardness, and most importantly, the corrosion resistance, which is considered to be stainless steel with more than 13%. Despite this call, all steel will rust if not maintained properly.     Manganese     An important element that helps to generate texture structure, increase firmness, strength, and abrasion resistance.     Molybdenum     Carbonization agent to prevent steel from becoming brittle and maintain the strength of steel at high temperature.     Nickel     Maintain strength, corrosion resistance, and toughness.     Silicon     Help to increase strength. Like manganese, silicon is used to maintain the strength of steel during the production of steel.     Tungsten     Enhanced we...

    The casing is used to strengthen the well wall, and the inner and outer diameters are much larger than the drill rod; the drill rod is used to connect the drill collar and the drill bit, and the length is sufficient to support the drill bit in the downhole operation. Regardless of function or size, they are all different.     The essence of the casing pipe is:     1. During the drilling process, as the depth of the well increases, the required mud density will increase, and the upper bottom layer may be leaked. The role of the casing is to prevent the upper layer from being leaked when drilling the lower layer.     2. The last oil pipe and tail pipe is the oil passage. The purpose is to stabilize the formation and prevent collapse. If the formation is hard, the well can be completed with open holes.     Open-hole completion can only be applied to a single oil or gas layer with hard and dense rock formations, no water-containi...

    Straight seam welded pipe is a general term, which is produced by steel belt. The pipes welded by high-frequency welding equipment in straight seam are called straight seam welded pipe. (Named because the welded part of the steel pipe is in a straight line). Among them, there are different subsequent production processes according to different uses. (It can be roughly divided into scaffold tubes, fluid tubes, wire sleeves, bracket tubes, guardrail tubes, etc.)     The low-pressure fluid welded pipe is a type of straight seam welded pipe. Generally, water and gas are transported. After the welding is completed, an additional water pressure test is performed.

    High frequency resistance welded pipe is a welding method used to heat the resistance generated by the high frequency current flowing through the continuous contact surface of the workpiece, as long as the top forging force is used to allow the metal of the workpiece to be connected to each other. It is similar to traditional resistance welding, but there are many important differences. High frequency resistance welded pipes have been used in the production of carbon steel welded pipes for more than 40 years. The high-frequency resistance welded pipe has a large power supply. For various materials, the diameter strain and wall thickness steel pipe can achieve a higher welding speed (more than 10 times the arc welding of the large welding speed).     Therefore, due to the high speed of high-frequency welding, the general-purpose steel pipe produced by high-frequency resistance welded pipe has caused difficulty in removing burrs in the welded pipe , which has bro...

    Tubing and casing are both indispensable in oil exploration.     Tubing is a pipe that runs into the casing of an oil well during normal production of the oil well. In the spout well, the oil flow flows into the surface through the tubing and enters the gathering and transportation process. In the mechanical production well, the tubing, sucker rod, and deep well pump (that is, "three pumping" equipment) are combined to pump oil to the surface and enter the gathering and transportation process.     The casing is a pipe that goes downhole after drilling, the casing pipe and the wall of the well are sealed with cement, and then a perforating gun is used to perforate the target layer to make the oil flow through the rock formation, cement ring, and casing into the well Bottom, then enter the oil pipe to the ground.     The main functions are:     1. Reinforce the well wall to prevent stratum collapse;     2. Isolate d...

    Electric fusion welding is the combination of metal and metal by heating one or several consumable electrodes and the workpiece. Electric resistance welding is a welding process that uses a strong current to pass through the contact point between the electrode and the workpiece to generate heat from the contact resistance.     The arc of electric fusion welding melts the metal and the filling material fully, and does not need to pressurize, and the filling metal part comes from the electrode.     Electric resistance welding is a type of welding method that uses resistance heat as an energy source, including electroslag welding that uses slag resistance heat as an energy source and resistance welding that uses solid resistance heat as an energy source.     Electric resistance welding often uses a large current. To prevent arcing on the contact surface and to forge the weld metal, pressure is always applied during the welding process. ...