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Oil Drilling Equipment with precision milled Rotary Kelly flats meeting API specifications for and consistent drill string performance
Oil Drilling Equipment with precision milled Rotary Kelly flats meeting API specifications for and consistent drill string performance
Specifications
Delivery Time :
1 Months
Model :
BH26
Diameter :
1.5-24inch
Model Number :
3
Impact Energy :
55-60J
MOQ :
1
Type :
Drilling Machinery
Main Website :
www.kosunservices.com
Working Temperature :
up to 120 ℃
Percussion Oil Flux :
30-35I/min
Brand Name :
xi'an rig
Hole Diameter :
32-50mm
Place of Origin :
China
Application :
oil and gas industry
Payment Terms :
L/C,T/T
Powersource :
Diesel/Electric
Packaging Details :
Wooden case
Maintenanceinterval :
Every 500 operational hours
Controlsystem :
Automated/Manual
Certification :
API 5DP
Rotaryspeed :
50-120 RPM
Torque Force :
50-55Nm
Power :
11kw
Description

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

Rotary Kelly

Kelly is 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. TIANHE 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 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 TIANHE Kelly is furnished with a pressed steel thread protectors.

Describe

Features and Benefits

  • 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;

When ordering please specify:

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

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Product Detail
Delivery Time :
1 Months
Model :
BH26
Diameter :
1.5-24inch
Model Number :
3
Impact Energy :
55-60J
MOQ :
1
Contact Supplier
Oil Drilling Equipment with precision milled Rotary Kelly flats meeting API specifications for and consistent drill string performance

Xi'an Rig Oilfield Equipment Co., Ltd.

Verified Supplier
2 Years
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Exporter, Trading Company, Seller
Main Products :
Oil Drilling Equipment, Drilling Rig Mud Pump, High Pressure Manifold
Total Annual :
200-500
Employee Number :
100~110
Certification Level :
Verified Supplier
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