other
HOT PRODUCT
  • Spiral Drilling Collar
    Spiral Drilling Collar

    ‌RockySea Petro Spiral Drill CollarIn directional drilling, due to the large deviated well and the large contact area between the drill collar and the borehole wall, problems like sticking and jamming are more likely to happen. The spiral drill collar reduces the contact area between the drill collar and the borehole wall, so it is widely used. Spiral drill collars are not listed in intl standards, but due to its practical value, many manufacturers have produced them.Description The function of

    VIEW DETAILS
  • Desulfurization And Denitrification Oilfield Steam Boiler
    Desulfurization And Denitrification Oilfield Steam Boiler

    RockySea Petro Desulfurization And Denitrification Oilfield Steam BoilerThe utilization rate of lime can be improved and the cost of desulfurization can be saved by adopting the integration of desulfurization and dust removal.The regeneration of absorbent, desulfurization slag and precipitation are carried out outside the tower, which reduces the possibility of scaling in the tower.With NaOH desulfurizer, the circulating solution is basically NaOH aqueous solution, and there is no corrosion and blockag

    VIEW DETAILS
  • Casing Stop Ring
    Casing Stop Ring

    ‌RockySea Petro Casing Stop RingDatasheetUseWhen using the top thread stop ring, the following steps should be followed.1. When using the fixed screw type, first insert the sleeve, then insert the screw and use a hammer to strike.2. The conventional stop ring should be inserted into the sleeve first, and then the screw should be tightened with a wrench.3. Snap on the locking ring, directly attach the locking ring to the sleeve, lock it with a pin, and then tap in the screw.TypeThe stop rings of

    VIEW DETAILS
  • Tubing Pump
    Tubing Pump

    ‌RockySea PetroTubing PumpThe raw material of tubing pump parts should be inspected after heat treatment, the mechanical properties, chemical compositions and metallographic structures must be inspected by batch. The tubing pump parts should be inspected several times during the processing procedure.Best tubing pump manufacturer in ChinaRockySea Petro also developed the downhole pumps with various processes of boronizing, nitriding, chrome plating, tungsten plating for special well conditions.Some key point

    VIEW DETAILS
  • Mud Pump
    Mud Pump

    ‌RockySea Petro Mud PumpDescriptionIn the operation of using rotary drilling method to drill oil and natural gas wells, the drilling reciprocating pump is used to pump drilling fluid, i.e. mud, to circulate and flush the well. During drilling, the mud pump injects mud into the wellbore along with the drill bit, playing a role in cooling the drill bit, cleaning drilling tools, fixing the wellbore wall, driving drilling, and bringing rock cuttings back to the surface.So drilling pumps are usually

    VIEW DETAILS

OCTG Drill Pipe

Date:2024-05-05 Popularity:471

RockySea Petro Drilling Pipe


RockySea Petro has abundant manufacturing experience in  OCTG drilling pipes.


  • Exported to the United States, Canada, Europe, Africa and Middle East and all over the world.
  • Our  drilling pipes also have various types to fit different environments and applications.
  • The company has passed ISO 9001,  and other quality certification systems.
  • RockySea Petro its establishment, RockySea Petro has always insisted on taking the market as the center, taking R & D as the driving force, and constantly improving product quality.

Description

The drilling pipe is the basic component of the drill string, which is mainly used to transmit torque, convey drilling fluid, and continuously connect the drill pipe in the drilling process to deepen the borehole.
The working environment of drill pipe is the worst in drilling operation. In addition to bearing the torque, it is also subject to the tensile stress generated by the weight of the drill string itself, and the higher the stress, the greater the stress.

Upset Types

The pipe body and joint of the drill pipe in use are connected by butt welding. In order to increase the strength of the joint, the butt welded parts at both ends of the pipe are upset. According to intl standards, there are 3 types of upset: IU(internal upset), EU(external upset)and IEU(internal and external upset).

EU:
The inner diameter of the extra upset drill pipe is the same, but the outer diameter of both ends of the pipe body is increased. The outer diameter of this drill pipe joint is larger than the outer diameter of the drill pipe joint of the same size, which increases the contact friction between the joint and the well wall when rotating in the well and is easy to wear; Because the inner diameter of the drill pipe is the same as the inner diameter of the pipe body, the flow resistance is small when the drilling fluid is circulated.
IU: 
The inner upset reduces the inner diameter of both ends of the pipe body to increase the thickness of the pipe wall. The outer diameter of this drill pipe is the same, and the outer diameter of the joint is not too large. When rotating in the well, the contact between the joint and the well wall is small, and the wear is also small. However, because the inner diameter of the upset part is smaller than the inner diameter of the pipe body, the flow resistance during the circulation of drilling fluid is increased.
IEU: 
Internal and external upset drilling is to reduce the inner diameter and increase the outer diameter at both ends of the pipe to increase the wall thickness of the pipe at both ends. The drill pipe of this structure combines the advantages of the drill pipes of the above two structures.

Features 

Production steps

RockySea Petro drilling pipe production mainly follows these steps:
Raw Material Test → raw pipe end heating → pipe end upset → pipe body straightening →pipe bodγ and end inspection → upset pipe finished
Then for welding heat treatment it follows:
Austenite→quenching→temper→quenching→temper→Non-destructive inspection→pipe and tool joint friction welding→annealing→welds processing→weld zone inspection→finished drill pipe

Basic Parameters

Nominal sizeNominal weightGradeUpset typeOD (mm)Wall thickness(mm)
2 3/86.65EEU60.327.11
2 7/810.4EEU73.029.19
3 1/213.3EEU88.99.35/11.4
414EIU/EU101.68.38
4 1/216.6/20EIEU/EU114.38.56/10.92
519.5/25.6EIEU1279.19/12.7
5 1/221.9/24.7EIEU139.79.17/10.54
6 5/825.2/27.7EIEU168.38.38/9.19


Data Sheet

Nominal sizeNominal weightGradeUpset typeOD (mm)Wall thickness(mm)
2 3/86.65EEU60.327.11
2 7/810.4EEU73.029.19
3 1/213.3EEU88.99.35/11.4
414EIU/EU101.68.38
4 1/216.6/20EIEU/EU114.38.56/10.92
519.5/25.6EIEU1279.19/12.7
5 1/221.9/24.7EIEU139.79.17/10.54
6 5/825.2/27.7EIEU168.38.38/9.19



RockySea Petro Copyright © 2008-2025 Inc. SITEMAP