API Standard Heavy Weight Drill Pipe Slip Slick Spiral Drill Collar for Oil Drilling

• 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: 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: This essential component strategically adds weight to the drill bit, ensuring it maintains contact with the formation for optimal drilling efficiency, while simultaneously providing indispensable stability to the entire drill string.

-Specifications:
1) Size: Available in outer diameters ranging from 3-1/8" to an impressive 11", complemented by standard lengths of 31 feet, fitting diverse drilling requirements seamlessly.
2) Material: Crafted from robust alloy steel, renowned for its high yield strength, ensuring durability and resilience in demanding drilling operations.
3) Weight: Designed to be significantly heavier than conventional drill pipes, with a specific gravity approximately around 7.8, ensuring stability and effectiveness in drilling.
4) Thread Connections: Choose from API Regular or other premium threads to best suit your drilling tool's requirements for secure and reliable connections.

-Features:
1) Spiral grooves ingeniously crafted to prevent differential sticking, enhancing operational reliability and efficiency.
2) Non-magnetic drill collars, ideal 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