Baotou Found Petroleum Machinery Co.,Ltd covers an area of 130 mus. It is a specialized producer which produces the petroleum machinery such as drilling collar, drill pipe and sucker rod etc.
The company had rich technical force with more than 30 specialties technician in the existing over 300 staff.. It cooperates with the Beijing Oil Research Institute and Daqing Oil Exploiting Research Institute, The company certified ISO9001 Quality System Assessment and API Certificate, the number of API Certificate of our company are 11B-0081 for sucker rod and 7-1-0552 for drill collar .Its product and produce ability is:
1.sucker rod 7000,000 meters/every year
2.drilling collar 10,000 Pcs / every year
3.drill pipe 20,000 tons/ every year
The company would like to accept the special orders and to develop new products according to customer's requests. Under the policy friendship, equality and mutual benefit ,welcome to cooperate with all customers over the world.
Adhering to the principles of quality first, credit first, the company will provide high quality products and heartfelt service for customers by first-class equipment, advanced technical and scientific management.
Drill collar is made from AISI4145H steel acc.to SY/T5144-1997 and API Spec.7.
The 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. MS brand drill collar are manufactured strictly from API Spec.7 and SY5144 standard.
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
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
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 rolled 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 enhanced
Drill collar thread type | OD | ID | Length (mm) | ||
NC23-31 | mm | in | mm | in |
|
NC26-35 ( 23/8 ″ IF ) | 79.4 | 3 1/8 | 31.8 | 11/4 | 9150 |
NC31- 41(27/8 ″ IF) | 88.9 | 31/2 | 38.1 | 11/2 | 9150 |
NC35-47 | 104.8 | 41/8 | 50.8 | 2 | 9150 |
NC38-50(31/2 ″ IF) | 120.7 | 43/4 | 50.8 | 2 | 9150 |
NC44-60 | 127.0 | 5 | 57.2 | 21/4 | 9150 |
NC44-60 | 152.4 | 6 | 57.2 | 21/4 | 9150 (or) 9450 |
NC44-62 | 152.4 | 6 | 71.4 | 2 13/16 | 9150 (or) 9450 |
NC46-62(4 ″ IF) | 158.8 | 61/4 | 57.2 | 21/4 | 9150 (or) 9450 |
NC46-65(4 ″ IF) | 158.8 | 61/4 | 71.4 | 2 13/16 | 9150 (or) 9450 |
NC46-67(4 ″ IF) | 165.1 | 61/2 | 57.2 | 2 13/16 | 9150 (or) 9450 |
N50-67(4 1/2 ″ IF) | 165.1 | 61/2 | 71.4 | 2 13/16 | 9150 (or) 9450 |




