What is a special petroleum pipe?How to make special petroleum pipes?
Date:
25 Apr,2023
Petroleum special pipe is a kind of steel pipe used to support the well wall of an oil and gas well to ensure the normal operation of the entire oil well during drilling and after completion.
Petroleum special pipe is a kind of steel pipe used to support the well wall of an oil and gas well to ensure the normal operation of the entire oil well during drilling and after completion.According to different drilling depths and geological conditions, several layers of casing should be used for each well.After the casing enters the well, cement should be used for cementing.It is different from tubing and drill pipe and cannot be reused.It is a disposable consumable.Therefore, casing consumption accounts for more than 70% of all oil well pipelines.Special tubing is mainly used for oil and gas well drilling and oil and gas transportation.It includes oil drill pipes, Jiangsu petroleum special pipes and oil production pipes.Oil drill pipes are mainly used to connect drill collars and drill bits to transmit drilling power.Casing is mainly used to support the well wall during and after drilling to ensure the normal operation of the entire well during and after drilling.Tubing is mainly used to transport oil and gas from the bottom of the oil well to the ground.Oil well casing is the lifeline to maintain the operation of oil wells.Due to different geological conditions and complex downhole stress states, the combined effects of tensile, compressive, bending and torsional stresses on the pipe body put forward higher requirements for the quality of the casing itself.Once the casing itself is damaged for some reason, the output of the entire oil well may be reduced or even scrapped.According to the strength of the steel itself, the casing can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, Q125, V150 and so on.The grade of steel used varies depending on the well condition and depth of the well.In a corrosive environment, the shell itself is required to be corrosion resistant.In places with complex geological conditions, the casing is also required to have collapse resistance.
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