Non-Magnetic Drill Collars
As one of the critical components in the bottom
hole assembly, Drilling Tools International pays
special attention to the quality and detail on all
of our drill collars. Our manufacturing process is
certified to API Spec 7-1 our inventory includes:
• Slick
• Flex
• Spiral
• Pony
Non-Mag
Non-Magnetic Drill Collars
Non-magnetic drill collars won’t interfere with
specialized electronics found in directional drilling
applications. Drilling Tools offers non-magnetic drill
collars that are constructed from 4145 alloy steel,
heat treated to API standards with OD sizes ranging
from 3 1/8” to 11”.
The standard non-mag drill collar is 31’ and IDs
range from 1 1/4” – 4”. For corrosive resistance
shot peening is available, and for OD or ID
protection, hard-banding can be applied. Collars
are machined on one of Drilling Tools’ manual or
CNC machines with premium cutting tools. Drill
Collar API connections are regularly inspected during
and after the machining process for thread profile,
lead, depth, taper and stand-off. Collars are generally
manufactured slick, but can also be spiraled or flexed
based on specific needs. Short or Pony Collars are also
available as slick or flexed.
Strength. Innovation. Performance.
Non-Magnetic Drill Collars
STANDARD SIZES, BORES AND CONNECTIONS
DRILL COLLARS
Common
Connections
OD
(in.)
ID
(in.)
Approx
Weight
(lbs.)
2 7/8 REG
3 1/2 To 3 7/8
1 1/4 To 1 3/4
760-1114
3 1/2 REG
4 1/8 To 4 1/2
1 1/4 To 2 1/4
989-1490
3 1/2 IF
NC38
4 3/4 To 5 1/2
1 3/4 To 2 13/16
1350-2250
4 FH
NC40
5 To 6
1 3/4 To 2 13/16
1552-2726
4 1/2 FH
5 1/2 To 6 1/2
2 To 3
1759-3166
4 1/2 XH
NC 46
5 3/4 To 6 3/4
2 1/4 To 3
1992-3352
4 1/2 IF
NC 50
6 1/4 To 7 1/2
2 1/4 To 3 1/4
2359-4237
5 1/2 FH
7 To 7 3/4
2 1/4 To 3 1/4
3182-4552
NC 56
7 1/4 To 8
2 1/2 To 3 1/4
3476-4780
6 5/8 REG
7 1/2 To 8 1/4
2 1/2 To 3 1/4
3782-5116
6 5/8 FH
8 1/2 To 9 1/2
2 1/2 To 3 3/4
4816-6953
7 5/8 REG
8 1/2 To 9 1/2
2 1/2 To 3 3/4
4816-6953
Our Quality Management System is certified in compliance to ISO 9001, and API Spec Q1 and our manufacturing is certified to API Spec 7-1. Our Quality Management System governs all of our processes
from planning, to process control, to delivery. This ensures that we consistently manufacture products that not only meet API standards but also meet the ever changing needs of our customers.
Drilling Tools International, Inc. is a leading provider of downhole
tools to the land and offshore drilling markets. For over 30 years our
company has been guided by the principals of Strength, Innovation
and Performance. Our world-class employees consistently deliver
unsurpassed customer service while providing quality products that
meet the demanding drilling applications of today’s market.
STEEL | NON-MAG
Drill Collars
Stabilizers
Sub Assemblies
Reamers
Global Operations
Headquarters
20104 E. Hardy Road
Houston, Texas 77073
281.645.2010
Tool Baskets
Corporate Offices
3701 Briarpark, Suite 150
Houston, Texas 77042
832.742.8500
Drilling Accessories
drillingtools.com
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