Drilling Kelly pipe
Drilling Kelly pipe
Drilling Kelly pipe
Drilling Kelly pipe

Drilling Kelly pipe

Kelly is the main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. Petro Kelly is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of the drill pipe in the drill string. The flats are precision-milled to API specifications. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high-quality drive sections. Each Kelly is furnished with pressed steel thread protectors.

  • Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHn and a minimum average Charpy impact value of 40 ft-lbs;
  • Ends and drive sections, IDs and connections machined and inspected to API specifications;
  • Ultrasonic inspection is performed on all sections;
  • Shipped in a protective steel-cased scabbard;
Description
Technical Data
More Details
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Description

Drilling Kelly pipes are the primary drivers of the drill string, transmitting torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. Our company provides high-quality Drilling Kelly pipes, precision-machined from heavy-duty steel bars to ensure durability and optimal performance. These pipes are available in square or hexagonal shapes and are designed to meet API specifications.

Drilling Kelly pipe  

A Drilling Kelly pipe is a long, square or hexagonal steel bar that serves as a drive section in the drill string. It is supported by the swivel through the rotary table and is connected to the first joint of the drill pipe. The straightness of the Kelly pipe is crucial, and strict inspections are carried out before, during, and after machining operations.

Our Kelly pipes are engineered for:

  • High Torque Transmission: Ensuring efficient power transfer to the drill bit.

  • Durability and Precision: Manufactured from fully heat-treated AISI 4145H-modified alloy steel.

  • API Specification Compliance: Precision-milled flats to maintain tight tolerances and high-quality drive sections.

  • Enhanced Performance: Supplied with pressed steel thread protectors and shipped in a protective steel-cased scabbard.

Technical Data

Drilling Kelly Pipe Specifications

Features

Drilling Kelly pipe

  • Manufactured from AISI 4145H-modified, fully heat-treated alloy steel.

  • Brinell hardness range of 285-341BHn with a minimum Charpy impact value of 40 ft-lbs.

  • Ends and drive sections precisely machined to API specifications.

  • Ultrasonic inspections performed on all sections.

  • Shipped in protective steel-cased scabbards to prevent damage.

 

Drilling Kelly pipe

Technical Data

Customization

Drilling Kelly pipe  

Drilling Kelly pipes can be customized in terms of length, tool joint specifications, and steel grades.

Packaging and Shipping

  • Secure packaging with steel racks or as per customer preferences.

  • Global shipping with reliable logistics support.

Company Overview

Our company specializes in manufacturing high-quality drilling equipment, including Kelly pipes, drill pipes, and heavy-weight drill pipes. With state-of-the-art facilities and strict quality control, we ensure superior performance and reliability in all drilling environments.

Why Choose Us

Drilling Kelly pipe

  • Extensive industry experience and API-certified manufacturing.

  • Customization options available.

  • Competitive pricing with high-quality assurance.

  • Global shipping and customer support services.

FAQ

Q: What is the function of a Drilling Kelly pipe? A: A Kelly pipe transfers rotational force from the rotary table to the drill string, enabling effective drilling operations.

Q: What materials are used for manufacturing Kelly pipes? A: Our Kelly pipes are made from AISI 4145H-modified, fully heat-treated alloy steel for maximum durability.

Q: Can Kelly pipes be customized? A: Yes, we offer customization options based on customer specifications, including size, tool joint type, and steel grade.

Conclusion

Drilling Kelly pipes are essential components in oil and gas drilling, offering high strength, durability, and efficiency. With advanced manufacturing techniques, strict quality control, and API compliance, our Kelly pipes ensure seamless drilling operations in various environments. Our company is committed to delivering the best solutions to meet your drilling needs.

Drilling Kelly pipe

More Details

Kelly is the main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. JX Petro Kelly is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of the drill pipe in the drill string.

Straightness of the kelly is very crucial in the manufacturing process, thus straightness inspections are carried out before, during, and after each machining operation. The flats are precision-milled to API specifications. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high-quality drive sections. Each Kelly is furnished with pressed steel thread protectors.

Specification

Nom. Size (in) Top Connection(LH) Bottom Connection I.D. (in) Drive Section (in)
Standard O.D.(in) Optional O.D.(in) Square O.D.(in) Hex. O.D.(in) Square Hex. A B
2-1/2 6-5/8REG 7-3/4 4-1/2REG 5-3/4 NC26      1-1/4   3-2/7  
3 6-5/8REG 7-3/4 4-1/2REG 5-3/4 NC31   4-1/8 NC26   3-3/8 1-3/4 1-1/4 4 3-3/8
3-1/2 6-5/8REG 7-3/4 4-1/2REG 5-3/4 NC38   4-3/4 NC31   4-1/8 2-1/4 1-3/4 4-1/2 4
4-1/4 6-5/8REG 7-3/4 4-1/2REG 5-3/4 NC46   6-1/4 NC38   4-3/4 2-4/5 2-1/4 5-4/7 4-4/5
6-5/8REG 7-3/4 4-1/2REG 5-3/4 NC50   6-3/8 NC38   4-3/4 2-4/5 2-1/4 5-4/7 4-4/5
5-1/4 6-5/8REG 7-3/4   5-1/2FH   7 NC46   6-1/4 3-1/4 3 7 6
6-5/8REG 7-3/4   NC56     7 NC50   6-3/8 3-1/4 3-1/4 7 6
6 6-5/8REG 7-3/4     5-1/2FH   7   3-1/2   6-4/5
6-5/8REG 7-3/4     NC56    7   3-1/2   6-4/5

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Drilling Kelly pipe

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Better Petro maintains an extensive inventory of in-stock parts, Companion Flange, Double Studded Adapter, and electronic components, ready to ship to meet urgent requirements. Each part is meticulously sourced and rigorously tested to ensure compatibility and durability under extreme drilling conditions. By partnering with Better Petro, clients gain access to superior service, competitive pricing, and the assurance of keeping their drilling operations running smoothly and efficiently.