High-Performance API Spec 7-1 Spiral Drill Collar for Oil Fields

• Customization: Available
• Warranty: 1 Year
• Certification: API
• Model NO.: API SPEC 7-1
• 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

Introducing the DRILL COLLAR

 

 

Innovative Drill Collar Solution

-Purpose: Expertly engineered to add substantial weight directly to the drill bit, ensuring consistent contact with the geological formation while providing unwavering stability to the entire drill string.

-Specifications Overview:
1) Size: Available in outer diameters ranging from 3-1/8" to 11", with a standard length of 31 feet designed for optimal performance.
2) Material: Constructed from premium alloy steel, renowned for its exceptional high yield strength, this material ensures durability and reliability under demanding conditions.
3) Weight: Designed to be significantly heavier than standard drill pipe, featuring a specific gravity of approximately 7.8 to enhance drilling precision.
4) Thread Connections: Engineered with API Regular or alternative premium threads to meet diverse operational requirements.

-Distinctive Features:
1) Spiral grooves meticulously designed to prevent differential sticking, enhancing operational efficiency.
2) Non-magnetic drill collars: Specifically tailored for use with sensitive directional drilling tools, ensuring accuracy and precision.

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