What material steel pipe do the drill pipe use?
Commonly used materials for geological drill pipe are DZ40, DZ50, DZ60, R780 and other geological drilling seamless steel pipe. Seamless steel pipe for drilling pipe, which is used for petroleum drilling pipe in petroleum industry. General parameters of seamless steel pipe for drilling rod.
API standard E75 to S135 steel grade, outside diameter from 2 3/8 to 6 5/8 series of oil drilling rod and high torque resistance of double shoulder joint drill pipe and BNK C95S drill rod for special steel grade used in sour oil well. It is mainly suitable for the construction of deep well, horizontal well and large displacement well during the exploration and development of oil and gas.
A rod that is connected and used to transmit power in a drilling tool. The common components of drill string are drill bit, drill collar, drill pipe, stabilizer, special joint and kelly. The basic functions of drill string are: (1) lifting bit; (2) applying drilling pressure; (3) transmitting power; (4) conveying drilling fluid; (5) carrying out special operations: squeezing cement, dealing with underground accidents, etc..
