Drill Collar Standard/Slick/Spiral Drill Collar for Oil Well Drilling

• Customization: Available
• Standard: RoHS, BS, DIN, JIS, AISI, API
• Length: 9500mm
• Model NO.: drill collar
• Payment: L/C T/T
• Size: Customized
• Transport Package: Wooden Box
• Specification: NC26
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 50000PC/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.

TIANHE 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.

Features and Benefits

• A hardness range of 285 to 341 BHN and a Charpy impact value of 40 ft-lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature;
• Connections are phosphate coated after machining to protect the threads from corrosive elements and to prevent galling upon initial make-up;
• Thread roots are cold rolled on API and H-90 connections;
• Pressed steel thread protectors are supplied for all drill collar that are equipped with standard connections

When ordering please specify:

• Drill collar OD and ID;
• Overall length;
• Connections required (size and type);
• Special features desired, for example: Slick or Spiral;
• Stress Relief Features;
• Slip and/or Elevator Recess; Hardbanding;

Product Parameters

Specification-Drill Collar

Number And Connection Table	Product Code	Outside Diameter		Inside Diameter		Length mm	Bevel Diameter mm	Bending Strength Ratio
		mm in		mm in
NC23-31	Z01/Z02-01000	79.4	3 1/8	31.8	1 1/4	9150	76.2	2.57:1
NC26-35(2 3/8 IF)	Z01/Z02-02000	88.9	3 1/2	38.1	1 1/2	9150	84.5	2.42:1
NC31-41(2 7/8 IF)	Z01/Z02-04000	104.8	4 1/8	50.8	2	9150 or 9450	101.6	2.43:1
NC35-47	Z01/Z02-06000	120.6	4 3/4	50.8	2	9150 or 9450	114.7	2.58:1
NC38-50(3 1/2 IF)	Z01/Z02-07000	127	5	57.2	2 1/4	9150 or 9450	121	2.38:1
NC44-60	Z01/Z02-23000	152.4	6	57.2	2 1/4	9150 or 9450	144.5	2.49:1
NC44-60	Z01/Z02-23100	152.4	6	71.4	2 13/16	9150 or 9450	144.5	2.84:1
NC44-62	Z01/Z02-08000	158.8	6 1/4	57.2	2 1/4	9150 or 9450	149.2	2.91:1
NC46-62(4 IF)	Z01/Z02-08100	158.8	6 1/4	71.4	2 13/16	9150 or 9450	150	2.63:1
NC46-65(4 IF)	Z01/Z02-09000	165.1	6 1/2	57.2	2 1/4	9150 or 9450	154.8	2.76:1
NC46-65(4 IF)	Z01/Z02-09100	165.1	6 1/2	71.4	2 13/16	9150 or 9450	154.8	3.05:1
NC46-67(4 IF)	Z01/Z02-11000	171.4	6 3/4	57.2	2 1/4	9150 or 9450	159.5	3.18:1
NC50-67(4 1/2 IF)	Z01/Z02-11100	171.4	6 3/4	71.4	2 13/16	9150 or 9450	159.5	2.37:1
NC50-70(4 1/2 IF)	Z01/Z02-12000	177.8	7	57.2	2 1/4	9150 or 9450	164.7	2.54:1
NC50-70(4 1/2 IF)	Z01/Z02-12100	177.8	7	71.4	2 13/16	9150 or 9450	164.7	2.73:1
NC50-72(4 1/2 IF)	Z01/Z02-24000	184.2	7 1/4	71.4	2 13/16	9150 or 9450	169.5	3.12:1
NC56-77	Z01/Z02-13000	196.8	7 3/4	71.4	2 13/16	9150 or 9450	185.3	2.70:1
NC56-80	Z01/Z02-14000	203.2	8	71.4	2 13/16	9150 or 9450	190.1	3.02:1
6 5/8 REG	Z01/Z02-15000	209.6	8 1/4	71.4	2 13/16	9150 or 9450	195.7	2.93:1
NC61-90	Z01/Z02-16000	228.6	9	71.4	2 13/16	9150 or 9450	212.7	3.17:1
7 5/8 REG	Z01/Z02-17000	241.3	9 1/2	76.2	3	9150 or 9450	223.8	2.81:1
NC70-97	Z01/Z02-25000	247.6	9 3/4	76.2	3	9150 or 9450	232.6	2.57:1
NC70-100	Z01/Z02-18000	254	10	76.2	3	9150 or 9450	237.3	2.81:1
8 5/8 REG	Z01/Z02-19000	279.4	11	76.2	3	9150 or 9450	266.7	2.84:1

 

Detailed Photos

Drill Collar

Certifications

Packaging & Shipping

Company Profile

 Established in 1973 as a state-owned Mudanjiang Petroleum Machinery Factory. After 50 years a new private company(Tianhe) was registered and established in 2006.   At present, Tianhe Group has 5 sales companies, including Chengdu, Beijing, Shanghai, Yanan, Mudanjiang branches. 2 large factories, in cluding Mudanjiang and Shanghai factory, controlling the important sales territories in China. The company is also actively expanding its business overseas. Currently, more than 50 countries and regions around the world, as well as over 200 well-known oil companies and service company customers, are using products under the Tianhe brand. Tianhe has become one of the most popular Asian oil brands.

Our Advantages

1.The company has over 50 years of professional production experience and is capable of independently manufacturing a complete range of downhole tools, including: drill pipes, drill collars, stabilizers, jars, fishing tools, etc.

2. We have a strict quality control system, conducting strict quality checks from raw materials to finished products.

3.The company has obtained ISO9001 quality system certification and holds API certificates such as 5CT, 5DP, 7-1, Q1, etc.

4.The minimum order quantity is 1, and the delivery cycle can be strictly controlled.

5.Our export products have been recognized by customers in more than 50 countries and regions.

FAQ

1.Q:Are you a factory or trading company?
We are a factory and the Top 3 of oildrilling equipment manufacturer.

2.Q:Where is your factory located? 
We locate in Heilongjiang Province, China.

3. Q:What do your factory do regarding quality control?
From material to products, we inspect each process to keep good quality.
And SGS inspection can be accepted.

4.Q:How about MOQ ?
We have stock of common sizes at hand, so even few ton is accepted.

5.Q:How about payment ?
Both T/T and L/C can be accepted.

6.Q: How long does your warranty?
We can assured the quality within 90 days after receiving the cargoes.