other
HOT PRODUCT
  • 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
  • Rod Pump
    Rod Pump

    ‌RockySea Petro Rod PumpThe raw material of rod pump parts should be inspected after heat treatment, the mechanical properties, chemical compositions and metallographic structures must be inspected by batch. The rod pump parts should be inspected several times during the processing procedure. Some key points like the outer diameter of the plunger and the inner diameter of the pump barrel should be 100% inspected.Your Best Pump ManufacturersSealing performance tests must be carried out 100% after fini

    VIEW DETAILS
  • Swabbing Truck
    Swabbing Truck

    ‌Sanajck Swabbing TruckData sheetFeature 1.The swabbing truck has the advantages of continuous and reliable operation, convenient parameter adjustment, high drainage efficiency, and simple handling and installation. It solves the problems of discontinuous swabbing and drainage operation, low drainage efficiency, and cumbersome equipment handling,compared with existing drainage technologies. 2.Through on-site testing, the feasibility and reliability of the on-site application of

    VIEW DETAILS
  • Floating Target Single Well Gas-Liquid Multiphase Flow Meter
    Floating Target Single Well Gas-Liquid Multiphase Flow Meter

    ‌RockySea Petro Floating Target Single Well Gas-Liquid Multiphase Flow MeterFull support on your customized requirementThe strictest quality standards on Flow Meter Device25 years Flow Meter Device manufacturing experienceRockySea Petro passed ISO9001 certification in 2005 and three-system certification in 2017. The company has advanced production equipment, inspection, measurement, and test equipment, which can meet the requirements of product design, development, production, and service and has the only m

    VIEW DETAILS

Kelly Bar

Date:2024-05-05 Popularity:315

RockySea Petro Kelly Bar




RockySea Petro has abundant experience in R & D, production and sales of Kelly bars. 

The Kelly bar is located at the top of the drill string, and its main function is to transmit torque and bear the total amount of the drill string. The end face of the driving part of Kelly is divided into square and regular hexagon, which are most used in oil drilling Kelly is about three times thicker than drill pipe and made of high strength alloy steel, so it has high tensile strength and torsional strength.


Description 

Kelly bar can be divided into fine thread Kelly and non-fine thread Kelly according to the connection of the joints at both ends. Both Chinese and intl standard series applied Kelly bars without fine thread, and the joints at both ends are butt welded with or integrated with the Kelly bars.

Structure
 
Kelly is composed of driving part, upper and lower joints, etc. The upper joint thread is left-hand thread and the lower joint thread is right-hand thread. The water eye is round.

The cross-sectional shape of the driving part of Kelly bars can be divided into square and hexagonal bars. Generally, square drill pipe is used for large drilling rigs, and hexagonal drill pipe is used for small drilling rigs.

Features 

The specifications of Kelly are classified according to the width of the opposite side of the driving part of Kelly, and the length is generally 2-3m longer than that of a single drill pipe. There are two length types of  Kelly, 12.2m and 16.46m. The length of the driving part is 11.28m and 15.54m respectively.



Data Sheet 

The following is the data sheet of Square Kelly.

The following is the data sheet of Hexagonal Kelly.


More Details

The specifications of Kelly are classified according to the width of the opposite side of the driving part of Kelly, and the length is generally 2-3m longer than that of a single drill pipe.

RockySea Petro Copyright © 2008-2024 Inc. SITEMAP