API 7-1 Drill Collar for Slick or Spiral

• Customization: Available
• After-sales Service: Warranty
• Warranty: 1 Year
• Model NO.: API SPEC 7-1
• Certification: API
• Power Source: Hydraulic
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Mud, Water
• Material: AISI4145h
• Weight (Kg): 200
• Condition: New
• Local Service Location: None
• Keyword: Kelly Drill Pipe
• Use: Well Drilling
• Dimension(L*W*H): 2000*150*150mm
• End Protector: Plastic Pipe Cap
• Warranty of Core Components: 1 Year
• Surface: Painting
• Applicable Industries: Energy & Mining
• Marketing Type: Ordinary Product
• Core Components: Bearing, Gear, Pump
• Features: Safe and Stable
• Machinery Test Report: Provided
• Transport Package: Iron Shelves
• Specification: Up to the quantities
• Trademark: GOLDENMAN
• Origin: Shandong, China
• HS Code: 8431431000
• Production Capacity: 1000pieces/Year
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 233.000kg

Product Description

DRILL COLLAR

 

 

Drill Collar

-Purpose: The drill collar is an essential component that provides the necessary weight to the drill bit, ensuring it remains in constant contact with the geological formation. It plays a crucial role in maintaining the stability of the drill string throughout the drilling process.

-Specifications:
1) Size: Our drill collars come in a variety of outer diameters ranging from 3-1/8" to 11", perfectly complemented by our standard lengths of 31 feet, offering versatility and adaptability for different drilling needs.
2) Material: Crafted from robust alloy steel known for its high yield strength, our drill collars are designed to withstand the rigors of demanding drilling environments.
3) Weight: Engineered to be significantly heavier than standard drill pipes, with a specific gravity of approximately 7.8, ensuring optimal weight distribution and enhanced performance.
4) Thread Connections: Available with API Regular or other premium threads to meet diverse connection requirements, providing reliable and secure joint strength.

-Features:
1) Spiral grooves are expertly designed to prevent differential sticking, enhancing the efficiency and reliability of the drilling operation.
2) Non-magnetic drill collars are available for use with sensitive directional tools, reducing interference and improving the precision of directional drilling.

Drill collar specifications
Nominal Size	OD		ID		Length	Bevel Dia. mm	Bending Strength Ratio
	mm	in	mm	in	mm
NC31-41(2-7/8IF)	104.8	4-1/8	50.8	2	9150	100.4	2.43:1
NC35-47	120.7	4-3/4	50.8	2	9150	114.7	2.58:1
NC38-50(3-1/2IF)	127	5	57.2	2-1/4	9150	121	2.38:1
NC44-60	152.4	6	71.4	2-13/16	9150/9450	144.5	2.84:1
NC44-62	158.8	6-1/4	57.2	2-1/4	9150/9450	149.2	2.91:1
NC46-62(4IF)	158.8	158.8	71.4	2-13/16	9150/9450	150	2.63:1
NC50-70(4-1/2IF)	177.8	7	57.2	2-1/4	9150/9450	164.7	2.54:1
NC56-77	196.8	7-3/4	71.4	2-13/16	9150/9450	185.3	2.70:1
6-5/8REG	209.6	8-1/4	71.4	2-13/16	9150/9450	195.7	2.93:1
NC61-90	228.6	9	71.4	2-13/16	9150/9450	212.7	3.17:1
We can supply full size drill collar with API 5D/5DP, Please leave a message for consultation.

 

Drill pipe
Size(in)	OD of Pipe Body(mm)	Wall Thickness of Pipe Bodymm
2.3/8" to 6.5/8"	60.32-168.28	7.11-12.70