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Application and process steps of drill pipe

2014-11-25 11:12:18

API standard E75 to S135 steel grade, outside diameter from 2 3/8 "to 5/8" 6 series of oil drill pipe and has a high torsional performance of double shoulder joint of drill pipe and special steel grade for the sour Wells BNK C95S drill pipe. Mainly used in the oil and gas exploration and development in the process of deep well, horizontal well and large displacement during construction.

Drill pipe is the tail with shiu wing steel pipe, used to connect to the drill ground equipment and located in drilling bottom or bottom hole grinding equipment. Is the purpose of the drill pipe will be transported to the drill bit, drilling mud and raise, lower or rotate bottom intake device together with the drill bit. Drill pipe must be able to withstand great pressure inside and outside, twist, bending and vibration. In the process of oil and gas production and refining, drill pipe can be used multiple times.

Light pipe and steel pipe is made into drill pipe after after many processing steps. First of all, through the processing of steel pipe thickening process and the light pipe looks for bending, tube wall thickening. The next step, carries on the screw thread processing and increases the strength of the copper plating. Then non-destructive inspection, quality control of steel tube body of subsequent welding joint. Then, tube after welding heat treatment and welding processing, finally to eliminate the welding residual stress. Before the finished pipe crossing the paint and packaging to other tests of steel pipe products, including hardness testing, pressure testing and nondestructive testing.
The length of drill pipe in nine meters.


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