API 7-1 Slick and Spiral Drill Collar in Stock

• Customization: Available
• Customized: Customized
• Type: Spiral Drill Collar
• Model NO.: API SPEC 7-1
• Standard: API
• Usage: Oil Mining, Well Drilling
• 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: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 233.000kg

Product Description

DRILL COLLAR

 

 

Drill Collar

-Purpose: Our drill collar is meticulously engineered to add substantial weight to the drill bit, ensuring it remains in constant contact with the formation. This crucial feature stabilizes the drill string, enhancing operational efficiency and precision.

-Specifications:
1) Size: Offering outer diameters ranging from 3-1/8" to a robust 11", each drill collar is crafted to a standard length of 31 feet for optimized performance in diverse drilling scenarios.
2) Material: Constructed from premium alloy steel, our drill collars boast exceptional high yield strength, providing unparalleled durability and reliability.
3) Weight: Designed to be significantly heavier than standard drill pipes, with a specific gravity around 7.8, ensuring superior stability and performance.
4) Thread Connections: Available with API Regular or various premium threads, catering to a wide range of operational requirements and enhancing versatility.

-Features:
1) Spiral grooves expertly incorporated to mitigate the risk of differential sticking, thereby facilitating smoother drilling operations.
2) Non-magnetic drill collars, ideal for use with sensitive directional tools, ensuring accuracy and reducing interference in demanding 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