API 7-1 Spiral Drill Collar for High-Efficiency Drilling Operations

• 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

 

 

Drill Collar

-Purpose: The Drill Collar is an essential component that significantly enhances drilling operations by adding weight to the drill bit. It ensures continuous contact with the geological formation, thereby stabilizing the entire drill string and optimizing performance.

-Specifications:
1) Size: Available in a range of outer diameters from 3-1/8" to 11", with a standard length of 31 feet, accommodating diverse drilling requirements.
2) Material: Crafted from robust alloy steel, renowned for its exceptional high yield strength, ensuring durability and reliability in demanding drilling conditions.
3) Weight: Drill Collars are considerably heavier than standard drill pipes, with a specific gravity around 7.8, providing the necessary heft for efficient drilling.
4) Thread Connections: Features API Regular or other premium thread connections, allowing for versatile compatibility with various drilling setups.

-Features:
1) Spiral grooves are expertly designed to prevent differential sticking, enhancing operational efficiency and minimizing downtime.
2) Non-magnetic drill collars are available for use with sensitive directional tools, ensuring precision and accuracy in directional drilling applications.

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