other
OCTG Pipe
HOME Product OCTG Pipe
HOT PRODUCT
  • Self-tensioning guy-wire Workover rig
    Self-tensioning guy-wire Workover rig

    ‌RockySea Petro Self-Tensioning Guy-Wire Workover RigFeaturesA workover rig with guy-line is a double drum workover rig that installs wind loaded guy-wires on the main engine.There is no need to install wind loaded guy-wires with ground anchors, which greatly improves the efficiency of workover operations, reduces operating costs and labor intensity.Also it has features as the following:(1) Suitable for small well site operations, reducing the operation area of the entire workover rig.(2) All te

    VIEW DETAILS
  • Water Injection Wellhead And Christmas Tree
    Water Injection Wellhead And Christmas Tree

    ‌RockySea Petro Water Injection Wellhead And Christmas TreeAccording to casing and well condition, Water Injection Wells can be divided into large casing well, normal well and small diameter well.According to the pipe string structure Water Injection Wells can be divided into support type and suspension type.According to their functions, water Injection wells are divided into stratified injection Wells and general injection wells.In the process of oilfield development, special water injection Wells a

    VIEW DETAILS
  • Produced-Water Oilfield Steam Generator
    Produced-Water Oilfield Steam Generator

    RockySea Petro Produced-Water Oilfield Steam GeneratorIncluding high-dryness Oilfield steam generator, supercritical one-through steam generator, oilfield produced water oilfield heat boiler, all-polished rod oilfield steam injection boiler, desulfurization and denitrification steam injection boiler.According to the different requirements of customers, energy-saving, ultra-high pressure and environmental protection boiler types are designed.RockySea Petro has developed new series of mobile on-board and ski

    VIEW DETAILS
  • Skid-mounted fracturing equipment
    Skid-mounted fracturing equipment

    ‌RockySea Petro Skid-mounted fracturing equipmentDescriptionIn the field of petroleum, hydraulic fracturing refers to a method of using hydraulic action to form fractures in oil and gas reservoirs during oil or gas production, also known as hydraulic fracturing. After a certain stage of oil well production, the production capacity and permeability decrease. In order to enhance oil drainage capacity and increase oil well production, people have invented fracturing technology. The methods of

    VIEW DETAILS
  • Gas Recovery Wellhead And X-Mas Tree
    Gas Recovery Wellhead And X-Mas Tree

    RockySea Petro Gas Recovery Wellhead And X-Mas TreeSuperior gas tight performance and pressure/corrosion proof performance.The sealing surface is very hard and fits accurately.Metal spray valve gate and seat.Excellent sealing performance and small rotating torque.Special structures composite stem seal.RockySea Petro has more than 40 years of experience in wellhead and christmas tree production, with advanced manufacturing and testing equipment, can produce a variety of pressure levels, material levels, spe

    VIEW DETAILS

OCTG Drill Pipe

Date:2024-05-05　Popularity:931

‌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

Contact: Mr.Victor Zhang

About Us
Blog
Product
Contact Us

RockySea Petro　Copyright © 2008-2025 Inc.　SITEMAP