API Spec 7-1 Oilfield Slick / Square / Spiral / Non-Magnetic Drill Collar

• Customization: Available
• After-sales Service: 24/7
• Warranty: 1 Year
• Model NO.: API 7-1
• Certification: API
• Standard: API 7-1
• Surface Treatment: Spray-Paint
• Manufacturing Process: Casting
• Material: Carbon Steel, 4145h/4145hmod or Non-Magnetic.
• Weight (Kg): 280
• Usage: Hole Drilling
• Processing Type: Rolling
• Machine Type: Drilling Tool
• Use: Well Drilling
• Size: 79.4-300mm
• Name: API Spece 7-1 Drill Collar
• Item: Nc26 Nc31 Nc38 Nc40 Nc46 Nc50 5 1/2fh 6 5/8fh
• Type: Drill Collar
• Applicable Industries: Energy & Mining
• Product Name: API Spec 7-1 Slick / Square / Spiral / Non-Magneti
• Length: 9150 or 9450
• Diameter: 3 3/8"- 8 1/2"
• Transport Package: Plywood Case
• Specification: API 7-1
• Trademark: GM
• Origin: Shandong, China
• Production Capacity: 10000 Sets Per Year
• Package Size: 9500.00cm * 2345.00cm * 2215.00cm
• Package Gross Weight: 13000.000kg

Product Description

Oilfield Using Square Drill Collar

 

Oilfield using square drill collar

 

Description:

1. Material: 4145H/4145Hmod or Non-magnetic.

2. Standard: API7-1, NS-1.

 

A. Slick Drill Collar

Note: Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. The Drill collar are manufactured strictly from API Spec7-1 and SY5411 standard.

 

B. Spiral Drill Collar

Note: Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from diffirential pressure. The drill collars are manufactired strictly according to API Spec7-1 and Standard SY5144.

 

C. Spiral Drill Collar With Elevator Groove And Slip Groove

Note: Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar can be used as lifting sub and safety slip when trip out. The technical parameters for elevator groove and slip groove is as per API SPEC7-1. Hardbanding is optional at customers' requests.

 

D. Non-magnetic Drill Collar

The as cold rooled finish on both ID and OD surface with unique technical process strengthen the structure and ensures the tools with optimal resistance to stress,corrosion,cracking and the mechanical performance is greatly enganced.

 

 

Connections	OD mm	ID mm	Length mm
NC23-31	79.4	31.8	9150
NC26-35	88.9	38.1	9150
NC31-41	104.8	50.8	9150 or 9450
NC35-47	120.7	50.8	915 or 9450
NC38-50	127.0	57.2	9150 or 9450
NC44-60	152.4	57.2	9150 or 9450
NC44-60	152.4	71.4	9150 or 9450
NC44-62	158.8	57.2	9150 or 9450
NC46-62	158.8	71.4	9150 or 9450
NC46-65	165.1	57.2	9150 or 9450
NC46-65	165.1	71.4	9150 or 9450
NC46-67	171.4	57.2	9150 or 9450
NC50-67	171.4	71.4	9150 or 9450
NC50-70	177.8	57.2	9150 or 9450
NC50-70	177.8	71.4	9150 or 9450
NC50-72	184.2	71.4	9150 or 9450
NC56-77	196.8	71.4	9150 or 9450
NC56-80	203.2	71.4	9150 or 9450
6 5/8REG	209.6	71.4	9150 or 9450
NC61-90	228.6	71.4	9150 or 9450
7 5/8REG	241.3	76.2	9150 or 9450
NC70-97	247.6	76.2	9150 or 9450
NC70-100	254.0	76.2	9150 or 9450
8 5/8REG	279.4	76.2	9150 or 9450