Stabilized drill pipe is a steel pipe with screws at the tail used to connect the surface equipment of the drilling equipment and the drilling equipment at the bottom of the hole or the bottom hole equipment. The purpose of the drill pipe is to transport the drilling mud to the drill bit, which together with the drill bit raises, lowers, or rotates the drilling device. Drill bits must be able to withstand enormous internal and external pressure, torsion, bending, and vibration. Drill pipes can be used many times in the process of oil and gas extraction and refining. Drill pipe is divided into four categories: square pipe, drill pipe, and weighted drill pipe. The connection sequence will make the square drill pipe (1) the drill pipe (N, determined by the good depth) to weigh the drill pipe (N, determined by the drilling part design). The classification of drill pipe, drill pipe joints, drilling specification, steel grade, and strength of drill pipe are introduced in detail. Typical components of stabilized drill pipe include drill, drill collar, drill pipe, stabilizer, special joints, and square drill pipe.
The basic functions of stabilizing drill pipe are as follows:
(1) Drill down;
(2) Apply drilling pressure.
(3) Power transmission;
(4) Transportation of drilling fluid;
(5) Perform special work: cement extrusion, underground accident treatment, etc.
API standard E75 ~ S135 steel grades, a range of oil drill pipes with outer diameters from 2 3/8" to 6 5/8", double shoulder joint drill pipes with high torsional performance, and special steel grade BNK for sour oil wells C95S drill pipe. It is mainly used in the construction of deep wells, horizontal wells, and extended reach wells in the process of oil and gas exploration and development.
What are the main characteristics of stabilized drill pipes?
A drill pipe is a steel pipe with a screw at the end, which is used to connect the surface equipment of the drilling rig and the drilling or bottom hole equipment on the drilling ground. The purpose of the drill pipe is to transport the drilling mud to the drill bit, which together with the drill bit raises, lowers, or rotates the drilling device. Drill bits must be able to withstand enormous internal and external pressure, torsion, bending, and vibration. Drill pipes can be used many times in the process of oil and gas extraction and refining.
Smooth and round steel pipes are made with drill pipes after several processing stages. First, through the processing of the steel pipe thickening process, the appearance of the light pipe is bent towards the inside, and the steel pipe wall is thickened. Next, threading is performed and copper is plated for strength. Non-destructive quality management inspections are then carried out, followed by steel pipe body joint welding. Welding residual stress is then eliminated by welding heat treatment and welding treatment. Additional tests such as hardness testing, pressure testing, non-destructive testing, etc., should be performed on the finished steel pipe before painting and packaging the finished drill pipe.
The length of the drill pipe is usually about 9 meters.
What are the specifications for stabilizing drill pipes?
According to the American Petroleum Institute (API), drill pipe is divided into three categories based on length (L). Class I 33605.486 1 6.706m (18th 22ft); Class II (General) 33608.230-9.144m (27-30ft); Class III 336011.582 1 13.716m (38 1 45ft). Drill pipe can also be classified according to the outer diameter size. Common drill pipe size (D): 88.9, 114.3, 127 mm (customary imperial size: 3 1/2 "4" 5 ") three.