Advanced API 7-1 Drill Collar for Enhanced Drilling String Functionality

• Customization: Available
• Customized: Customized
• Surface Treatment: Painting
• Model NO.: API SPEC 7-1
• Type: Spiral Drill Collar
• Standard: API
• Usage: Oil Mining, Well Drilling
• 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
• Certification: API
• 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: 843143
• Production Capacity: 1000pieces/Year
• Package Size: 9500.00cm * 900.00cm * 950.00cm
• Package Gross Weight: 13000.000kg

Product Description

DRILL COLLAR: The Essential Component for Drilling Efficiency

 

 

Drill Collar: Elevate Your Drill String's Performance with Precision Engineering

-Purpose: Engineered to perfection, the Advanced API 7-1 Drill Collar adds crucial weight to the drill bit, ensuring it maintains constant contact with the geological formation. This attribute not only stabilizes the drill string but also enhances its operational efficiency and reliability.

-Specifications:
1) Size: Offering a versatile range of outer diameters from 3-1/8" to 11". Each drill collar is designed with standard lengths of 31 feet, perfectly accommodating various drilling scenarios.
2) Material: Crafted from premium alloy steel, this collar boasts impressive high yield strength, providing unmatched durability and resilience in demanding drilling conditions.
3) Weight: With a specific gravity around 7.8, these drill collars are significantly heavier than standard drill pipes, ensuring optimal downhole stability and drilling performance.
4) Thread Connections: Featuring API Regular or other premium threads to ensure a secure, reliable connection, enhancing the drill string's integrity and performance.

-Features:
1) Spiral grooves: Ingeniously designed to prevent differential sticking, these spiral grooves dramatically improve drilling efficiency by minimizing downtime and operational hazards.
2) Non-magnetic drill collars: Ideal for use with sensitive directional tools, these collars ensure precise drilling in challenging environments without compromising tool integrity.

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