• API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling
  • API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling
  • API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling
  • API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling
API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

Product Details:

Place of Origin: China
Brand Name: OilMan
Certification: ISO
Model Number: Square Kelly & Hexagonal Kelly

Payment & Shipping Terms:

Minimum Order Quantity: 5 pcs
Price: USD800-2000/pc
Packaging Details: In Bundles
Delivery Time: 20-30 days
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 500 pcs per month
Get Best Price Contact Now

Detail Information

Product Name: API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling Keywords: Hexagonal Kelly
Application: Oil & Gas Well Drilling Hardness: 285 To 341 BHN
Size: 3", 3-1/2", 4-1/4", 5-1/4", 6" Material: AISI 4145H

Product Description

API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

 

Kelly is the drive part of whole drill string, it transmits the torsional energy from the rotary table to the bit in the bottom of the hole. Kelly is supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string. Kelly has been approved by the API certification. Straightness is the key manufacturing process. Straightness is checked before, during and after each machining operation. Flats are precision-milled to API specifications. All millings are performed on specially designed rigid Kelly mills. Each Kelly is furnished with a pressed steel thread protector. We supply both square kelly and hexagonal kelly.

Product Details:

• Kelly is manufactured strictly according to API Spec7-1 standard. Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341 and a minimum average Charpy impact value of 40 ft-lbs.

• The end, drive section and connection of Kelly are machined and inspected according to API standard.

• Ends and drive sections, IDs and connections machined and inspected to API specifications.

• Kelly bars are ultrasonically inspected over full length and section.

• Shipped in a protective steel-cased scabbard.

Specifications:

Size

(inch)

Upper Box Connection Lower Pin Connection ID(mm) Driving Section mm
Type(LH) OD(mm) Thread Four Six

Cross

Flat

For Square

Kelly

Cross Corner For Hexa Kelly
Std Optional Std Optional Four

OD

(mm)

Six

OD

(mm)

2-1/2" 6 5/8 REG 4 1/2REG 196.8 146.0 NC26 85.7     31.8   63.5 83.3  
3" 6 5/8 REG 4 1/2REG 196.8 146.0 NC31 104.8 NC26 85.7 44.4 31.8 76.2 100.0 85.7
3-1/2" 6 5/8 REG 4 1/2REG 196.8 146.0 NC38 120.6 NC31 104.8 57.2 44.4 88.9 115.1 100.8
4-1/4" 6 5/8 REG 4 1/2REG 196.8 146.0 NC46 158.8 NC38 120.6 71.4 57.2 108.0 141.3 122.2
6 5/8 REG 4 1/2REG 196.8 146.0 NC50 161.9 NC40 120.6 71.4 57.2 108.0 141.3 122.2
5-1/4" 6 5/8 REG   196.8   5 1/2FH 177.8 NC46 158.8 82.6 76.2 133.3 175.4 151.6
6 5/8 REG   196.8   NC56 177.8 NC50 161.9 82.6 82.6 133.3 175.4 151.6
6" 6 5/8 REG   196.8       5 1/2FH 177.8   88.9 152.4   173
6 5/8 REG   196.8       NC56 177.8   88.9 152.4   173

 

API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling 0

 

Any enquiry please contact us by email: christal@oilmancn.com.

Visit our website: www.oilmanchina.com for more products information.

WhatsApp/WeChat:+86 13475294399

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