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

• Manufacturing Process: Forging
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Model NO.: drill collar
• Material: Alloy
• Delivery Time: 15-20days
• Service: OEM&ODM
• Package: Carton
• QC: High Quality
• Transport Package: Plywood Box
• Specification: as your request
• Origin: China
• HS Code: 84314310
• Production Capacity: 50000 Sets/Year

Product Description

Product Description

Drill Collar

Drill Collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drill string in tension. JX Petro Drill Collar is manufactured from AISI 4145H modified quenched and tempered steel and is heat treated along its entire length for uniform toughness and durability. Strict metallurgical tests are performed per specifications to ensure that the heat treatment produces consistent and maximum hardness through the depth of the bar.

we could supply slick type drill collar, spiral drill collar and Non-magnetic drill collar (NMDC).

Pictures
Features:
1. Hardness range of 285 to 341 BHN and a Charpy impact value of 40ft/lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature.
2. Connections as phosphate coated father machining to protect the threads from corrosive elements and to prevent galling upon initial make -up. Thread roots are cold rolled on API and H0-90 connections.
3. Pressed steel thread protectors are supplied to all drill collar that are equipped with standard connections.
4. Manufactured strictly according to API standard.
5. Widely used in oil, gas, HDD and geothermal field.




Specifics:

Size (in)	O.D (mm)	I.D. (in)	Code	Thread	Length (mm)	Weight (kg)
3 1/8	79.4	1-1/4	NC23-31	NC23	9140	298
3 1/2	88.9	1-1/2	NC26-35	NC26	9140	364
4 1/8	104.8	2	NC31-41	NC31	9140/9450	474/490
4 3/4	120.6	2	NC35-47	NC35	9140/9450	674/697
5	127	2-1/4	NC38-50	NC38	9140/9450	725/749
6	152.4	2-1/4	NC44-60	NC44	9140/9450	1125/1163
6	152.4	2-13/16	NC44-60	NC44	9140/9450	1022/1056
6 1/4	158.8	2-1/4	NC44-62	NC44	9140/9450	1237/1279
6 1/4	158.8	2-13/16	NC46-62	NC44	9140/9450	1134/1172
6 1/2	165.1	2-1/4	NC46-65	NC46	9140/9450	1352/1398
6 1/2	165.1	2-13/16	NC46-65	NC50	9140/9450	1249/1291
6 3/4	171.4	2-1/4	NC46-67	NC46	9140/9450	1471/1521
7	177.8	2-1/4	NC50-70	NC50	9140/9450	1597/1651
7	177.8	2-13/16	NC50-70	NC50	9140/9450	1494/1545
7 1/4	184.2	2-13/16	NC50-72	NC50	9140/9450	1625/1680
7 3/4	196.8	2-13/16	NC56-77	NC56	9140/9450	1895/1960
8	203.2	2-13/16	NC56-80	NC56 or 6- 5/8REG	9140/9450	2040/2109
8 1/4	209.6	2-13/16	6-5/8REG	6-5/8REG	9140/9450	2188/2263
9	228.6	2-13/16	NC61-90	NC61	9140/9450	2658/2748
9 1/2	241.3	2-13/16	7-5/8REG	7-5/8REG	9140/9450	2954/3054
9 3/4	247.6	3	NC70-97	NC70	9140/9450	3127/3234
10	254	3	NC70-100	NC70	9140/9450	3308/3421
11	279.4	3	8-5/8REG	8-5/8REG	9140/9450	4072/4210
Mechanical properties:  <7 inch Drill Collar: Yield Strength≥758MPa, Tensile Strength≥965MPa, Four times elongation ≥13%, Impact energy Ak≥54J (Single impact work≥47J, Average≥54J), Hardness range: 285HB~341HB ≥7inch Drill Collar: Yield Strength≥689MPa, Tensile Strength≥931MPa, Four times elongation≥13%, Impact energy Ak≥54J (Single impact work≥47J, Average≥54J), Hardness range 285HB~341HB
Drill collar can be customized as per customer's design.

 

 

Hot Sales Products

Company Profile

FAQ

How to order?

Please send us your inquiry with detail item description or with Model number.
If there is no packing demand we take it as our regular exported standard packing.
We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.
You send us your detail requirement, we provide quotation to you.

Can I expect a quality products?
All the production and processing are strictly according to ISO 9001:2008 and API standard. At the same time, mature production technology ensuring the quality satisfy international request. We also welcome the third party inspection, such as BV, SGS and TUV.
 
The information you may like to know before Payment:
 
1. Methods of Payment:
T/T (Telegraphic Transfer) or L/C at sight
 
2. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
 
3. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.