Home > products > Oil Drilling Equipment >
API-Compliant Rotary Kelly Flats For Consistent Drill String Performance

API-Compliant Rotary Kelly Flats For Consistent Drill String Performance

rotary kelly flats

Place of Origin:

China

Brand Name:

xi'an rig

Certification:

API 5DP

Model Number:

3

Chat Now
Request A Quote
Product Details
Type:
Drilling Machinery
Percussion Oil Flux:
30-35I/min
Maintenanceinterval:
Every 500 Operational Hours
Model:
BH26
Powersource:
Diesel/Electric
Working Temperature:
Up To 120 ℃
Diameter:
1.5-24inch
Main Website:
Www.kosunservices.com
Impact Energy:
55-60J
Hole Diameter:
32-50mm
Controlsystem:
Automated/Manual
Application:
Oil And Gas Industry
Rotaryspeed:
50-120 RPM
Torque Force:
50-55Nm
Power:
11kw
Highlight:

rotary kelly flats

Payment & Shipping Terms
Minimum Order Quantity
1
Packaging Details
Wooden case
Delivery Time
1 Months
Payment Terms
L/C,T/T
Product Description

Oil Drilling Equipment with precision milled Rotary Kelly flats meeting API specifications for and consistent drill string performance

Power System of Oil Drilling Equipment

 

The power system supplies the power source for all equipment of the entire rig and serves as the "power heart" of rig operation. Depending on the rig type, it comes in two mainstream configurations.

1. Diesel Power Unit: Mostly used in drilling scenarios without grid coverage, such as remote fields, deserts, and isolated onshore locations. It consists of multiple high-power diesel generator sets operating in parallel, providing mechanical power and electrical power to the drawworks, mud pumps, top drive, and auxiliary equipment. It delivers strong power output, strong adaptability, and independence from external power supply.

2. Electric Power Unit: Covers industrial grid power supply and variable-frequency generator sets, widely applied in urban areas, concentrated oilfield operation zones, and offshore drilling platforms. Equipped with an SCR (silicon-controlled rectifier) system and an MCC (motor control center), it converts AC power into the DC power required by the equipment and distributes power with precision. It offers the advantages of energy saving, quiet operation, easy control, and a high degree of automation. Modern intelligent rigs all adopt the variable-frequency electric drive mode.

API-Compliant Rotary Kelly Flats For Consistent Drill String Performance

When ordering please specify:of Oil Drilling Equipment

  • Kelly type (square or hexagonal);
  • nominal size and overall length;
  • Upper and lower connections.
Nom Size (in) Standard O.D.(in) Bottom Connection‑Hex. O.D.(in) 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 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC26 3 3/8     1 1/4 3 1/4  
3 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC31 4 1/8 NC26 3 3/8 1 3/4 1 1/4 3 3/8 3 3/8
3 1/2 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC38 4 3/4 NC31 4 1/8 2 1/4 1 3/4 4 7/16 3 15/16
4 1/4 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC46 6 1/4 NC38 4 3/4 2 13/16 2 1/4 5 1/2 4 25/32
4 1/4 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC50 6 3/8 NC38 4 3/4 2 13/16 2 1/4 5 1/2 4 25/32
5 1/4 6 5/8 REG LH 7 3/4   5 1/2 FH 7 NC46 6 1/4 3 1/4 3 6 3/4 5 29/32
5 1/4 6 5/8 REG LH 7 3/4   NC56 7 NC50 6 3/8 3 1/4 3 1/4 6 3/4 5 29/32
6 6 5/8 REG LH 7 3/4     5 1/2 FH 7   3 1/2   6 13/16
6 6 5/8 REG LH 7 3/4     NC56 7   3 1/2   6 13/16

Send your inquiry directly to us

Privacy Policy China Good Quality Oil Drilling Equipment Supplier. Copyright © 2026 Xi'an Rig Oilfield Equipment Co., Ltd. . All Rights Reserved.