High quality Drill pipe and
Tool joints
Tenaris provides oil and gas customers with high quality drill pipe and tool joints for a wide
variety of well profiles. Our complete offer includes corrosion-resistant and high-strength steel
grades for demanding operations.
Our drill pipes are available with outside diameters (ODs) ranging from 2 3/8”to 5 7/8”. We
offer E-75 to S-155 grades, in accordance with API Specification 5DP as well as proprietary
grades for more stringent requirements:
•Sour service grades: C95S and C105S
•High strength grades: S140 and S155
2
Drill Pipe
▲ Upsetting of drill pipe
Drill pipes are manufactured
as part of an integrated
process accomplished in fully
equipped state-of-the-art
facilities at TenarisNKKTubes.
Drill pipes and tool joints
are assembled by friction
welding. After removal of
weld bead, each heat affected
zone is quench and tempered
in a unique system to recover
mechanical properties.
Welded areas are inspected by
UT and MPI.
▲ Magnetic particle inspection
(MPI)
▲ Heat treatment for the weld
zone
Investment in quality and
technology is a permanent
commitment at
TenarisNKKTubes,
which holds ISO 9001, ISO
14001, and API 5DP
certifications.
All employees are fully
instructed in the importance
of quality and rigorous
quality management systems
are applied in our operations.
All products are manufactured
in accordance with customer’s
specifications and the most
demanding international
standards.
▲ Friction weld
▲ Long and smooth taper of
internal upset
Drill Pipe
3
4
Drill Pipe
In the case of API NC50,
very high VME stress and
compression stress are found
near external shoulder area.
NK DSTJTM NC50 clearly
indicates improved
performance in comparison
to standard API tool joint.
Pin:6 5/8" OD x 2 3/4" ID
Box: 3 1/2" ID
Circumferential make-up: 40 Degrees
38,000 ft-lbs(51,500 N-m)
Pin:6 5/8" OD x 2 3/4" ID
Box: 2 3/4" ID
Circumferential make-up: 20 Degrees
61,900 ft-lbs(83,900 N-m)
Drill Pipe
5
NK DSTJTM ST
● Suitable for ERD & Horizontal Drilling
● Superior Torque Resistance & Improved Hydraulics compared to conventional NK DSTJ TM
● Similar Running Characteristics
● Same tooling and element gauges as API are available.
NK DSTJTM ST58 Design
Not interchangeable with API tool joint
NK DSTJ TM ST58
NK DSTJTM 5-1/2FH
NK DSTJTM ST58
Thread taper
2" per foot (1/6)
2" per foot (1/6)
Threads per
inch
4
4
Thread form
same as API 5-1/2FH
(V-0.050)
same as API 5-1/2FH
(V-0.050)
NK DSTJTM NC38
NK DSTJTM ST39
Thread taper
2" per foot (1/6)
2" per foot (1/6)
Threads per
inch
4
4
Thread form
same as API NC38
(V-0.038R)
same as API NC38
(V-0.038R)
NK DSTJ TM 5 -1/2FH
Tool joint OD
Tool joint ID
NK DSTJTM ST39 Design
Not interchangeable with API tool joint
NK DSTJ TM NC38
NK DSTJ TM ST39
Tool joint OD
Tool joint ID
Comparison
Superior Torque Resistance & Improved Hydraulics compared to NK
DSTJ TM 5-1/2FH and API 5-1/2FH
Comparison of NK DSTJTM ST58 and others
●
●
5-7/8” and 5-1/2” Drill Pipe with NK DSTJ TM ST58 Tool Joint for ERD &
Horizontal Drilling
Torque Comparison 7-1/4"OD x 4"ID
66,900
NK DSTJ ST58
95,520
53,000
NK DSTJ 5-1/2FH
75,680
33,900
API 5-1/2FH
56,420
0
20,000
40,000
60,000
Torsional Yield Strength (ft-lbs)
6
Drill Pipe
80,000
100,000
Make-Up Torque (ft-lbs)
120,000
WT TM Drill Pipe Features
Exceptional Torque Strength Combined with a Slimmer OD-ID Envelope – Excellent for Top Drives
Our WT TM tool joints are the perfect choice for unconventional drilling applications such as:
* Wells that require high torque resistance
* Horizontal and extended reach wells
* Drilling in wells with reduced diameters and high circulation rates
PIN
Hydraulic efficiency is
improved
Exceptional
torque strength
A wear indicator
Stress created
by torque
Stress reduction
grooves.
Excellent for highly deviated
Torque strength
is independent
Pipe body sealing capability
The tapered,
two-step thread
profile
Plastic coating
Worldwide
repair
BOX
Tong length longer than shown.
U.S. and foreign patents apply.
Drill Pipe
7
▲ Design Analysis using
the FEA method.
▲ Full automatic tensile tester
Testing Facilities and R&D
Investment in R&D is a
management priority at
NKKTubes and throughout
Tenaris. Through our testing
center facilities in Japan,
Italy, Mexico and Argentina.
Tenaris develops proprietary
designs to meet the widest
and most demanding
customer needs.
TenarisNKKTubes is
continuously conducting
a variety of research and
development programs
aiming to produce higher
quality drill pipes in order to
introduce improved
products and technologies
that will better serve its
customers.
All products are supported
by a worldwide network of
licensed repair shops with
online access to all relevant
technical drawings and
specifications as well as
handling and running
services from our experienced
team of field engineers.
Manufacturing flow
■Drill pipe
Heating
Piercing
Cutting
EMI
Upsetting
Heat Treatment
Shipping
10
Drill Pipe
Mandrel
Reheating
Straightening
Stretch reducing
Straightening
NDI
Weight & length measurement
After welding
Drill Pipe
11
Manufacturing flow
■Tool Joint
Tool joint Blank
Turning & Boring
Optional Hard-banding
Inspection
Optional Break-in
■Process - Welding
Friction-Welding
Go on to the weight and length
measurement process
12
Drill Pipe
Bead cutting
Inspection of weld
Austenitizing & Quenching
Surface treatment
Inspection
Tempering
Threading
Stress Relief
Inside turning of weld area
Outside finishing of weld
Heat treatment
(Quench & Temper)
Drill Pipe
13
DRILL PIPE MECHANICAL PROPERTIES
SPEC.
YIELD STRENGTH
GRADE
API 5DP
E-75
X-95
G-105
S-135
NK
High
S140
series
Strength
S150
S155
Sour
C95S
Services
C105S
ELONGATION
MIN
HARDNESS
MAX
Ksi (MPa)
%
HRC
178 (1226)
183 (1261)
-
API formula
API formula
API formula
API formula
API formula
API formula
API formula
API formula
API formula
Box-weak connections are shown in bold type.
TJ 130 (SMYS 130 ksi) is recommended for NK DSTJ series.
Torque (ft-lb), Tension (lb), Make-up (ft-lb)
Grade for WT shall be TJ120(SMYS 120ksi).
Drill Pipe
17
UPSET DIMENTIONS AND WEIGHTS (Grade E)
DESIGNATIONS
SIZE
NOMINAL
WEIGHT
PIPE BODY
OD
WT
CALCULATED WEIGHT
ID
PLAIN
END
UPSET
UPSET DIMENSIONS
OD
in
lb/ft
LENGHT OF LENGHT OF LENGHT OF
INTERNAL INTERNAL INTERNAL
UPSET
UPSET
TAPER
+1 1/2
Min
Min
-1/2
Min
Max
LENGTH
END OF
PIPE TO
TAPER
FADE OUT
in
in
in
lb/ft
lb
in
in
in
in
in
in
in
in
D
t
d
wpe
ew
Dou
d ou
Liu
miu
Leu
meu
meu
Leu+meu
2.000
-
-
-
-
-
-
-
-
+1/8
-1/32
ID
AT END
OF PIPE
±1/16
LENGHT OF
EXTERNAL TAPER
INTERNAL UPSET (IU)
4
14.00
4.000
0.330
3.340
12.93
4.60
4.250
2.750
1.750
4-1/2
13.75
4.500
0.271
3.958
12.24
5.20
4.750
3.375
1.750
-
EXTERNAL UPSET (EU)
2-3/8
6.65
2.375
0.280
1.815
6.26
1.80
2.656
1.815
-
-
1.500
1.500
-
4.000
2-7/8
10.40
2.875
0.362
2.151
9.72
2.40
3.219
2.151
-
-
1.500
1.500
-
4.000
9.50
3.500
0.254
2.992
8.81
2.60
3.938
2.992
13.30
3.500
0.368
2.764
12.31
4.00
3.938
2.602
15.50
3.500
0.449
2.602
14.63
2.80
3.938
2.602
-
4
14.00
4.000
0.330
3.340
12.93
5.00
4.563
3.340
4-1/2
13.75
4.500
0.271
3.958
12.24
5.60
5.063
16.60
4.500
0.337
3.826
14.98
5.60
20.00
4.500
0.430
3.640
18.69
5.60
3-1/2
-
1.500
1.500
-
4.000
1.500
1.500
-
4.000
-
1.500
1.500
-
4.000
-
-
1.500
1.500
-
4.000
3.958
-
-
1.500
1.500
-
4.000
5.063
3.826
-
-
1.500
1.500
-
4.000
5.063
3.640
-
-
1.500
1.500
-
4.000
2.250
2.000
INTERNAL-EXTERNAL UPSET
4-1/2
5
5-1/2
6-5/8
16.60
4.500
0.337
3.826
14.98
8.10
4.750
3 5/32
2 1/2
2
1 1/2
1
1 1/2
-
20.00
4.500
0.430
3.640
18.69
8.60
4.781
3
2 1/4
2
1 1/2
1
1 1/2
-
19.50
5.000
0.362
4.276
17.93
8.60
5.188
3 11/16
2 1/4
2
1 1/2
1
1 1/2
-
25.60
5.000
0.500
4.000
24.03
7.80
5.188
3 7/16
2 1/4
2
1 1/2
1
1 1/2
-
21.90
5.500
0.361
4.778
19.81
10.60
5.750
4
2 1/4
2
1 1/2
1
1 1/2
-
24.70
5.500
0.415
4.670
22.54
9.00
5.750
4
2 1/4
2
1 1/2
1
1 1/2
-
25.20
6.625
0.330
5.965
22.19
24.87
7.000
5.315
4.500
2
3
-
-
5.500
27.70
6.625
0.362
5.901
24.21
24.00
7.000
5.315
4.500
2
3
-
-
5.500
* Note:This data is based on API 5DP(1st edition Aug. 2010).
18
Drill Pipe
UPSET DIMENTIONS AND WEIGHTS (Grade X, G, and S)
DESIGNATIONS
SIZE
NOMINAL
WEIGHT
PIPE BODY
CALCULATED WEIGHT
UPSET DIMENSIONS
±1/16
LENGHT OF
INTERNAL
UPSET
+1 1/2
-1/2
Min
Min
LENGTH
END OF
PIPE TO
TAPER
FADE OUT
in
in
in
lb/ft
lb
in
in
in
in
in
in
D
t
d
wpe
ew
Dou
d ou
Liu
miu
Leu
Leu+meu
OD
WT
ID
PLAIN
END
UPSET
OD
+1/8
-1/32
in
lb/ft
ID
AT END
OF PIPE
LENGHT OF
INTERNAL
TAPER
LENGHT OF
INTERNAL
UPSET
INTERNAL UPSET (IU)
3-1/2
13.30
3.500
0.368
2.764
7.40
12.31
3.500
1.938
3.500
-
-
-
4
14.00
4.000
0.330
3.340
8.80
12.93
4.250
2.625
3.500
-
-
-
EXTERNAL UPSET (EU)
2-3/8
6.65
2.375
0.280
1.815
6.26
4.60
2.656
1.562
4.250
-
3.000
5.500
2-7/8
10.40
2.875
0.362
2.151
9.72
6.20
3.250
1.938
4.250
-
3.000
5.500
3-1/2
13.30
3.500
0.368
2.764
12.31
10.20
4.000
2.500
4.250
-
3.000
5.500
15.50
3.500
0.449
2.602
14.63
8.20
4.000
2.500
4.250
-
3.000
5.500
4
14.00
4.000
0.330
3.340
12.93
14.40
4.625
3.062
4.250
-
3.000
5.500
4-1/2
16.60
4.500
0.337
3.826
14.98
17.20
5.188
3.562
4.250
-
3.000
5.500
20.00
4.500
0.430
3.640
18.69
16.00
5.188
3.438
4.250
-
3.000
5.500
16.60
4.500
0.337
3.826
14.98
8.70
4.750
2.875
2.500
3.000
1.500
3.000
20.00
4.500
0.430
3.640
18.69
17.60
4.781
2.812
4.250
3.000
3.000
5.500
19.50
5.000
0.362
4.276
17.93
16.80
5.188
3.562
4.250
3.000
3.000
5.500
25.60
5.000
0.500
4.000
24.03
15.40
5.188
3.312
4.250
3.000
3.000
5.500
21.90
5.500
0.361
4.778
19.81
21.00
5.750
3.812
4.250
3.000
3.000
5.500
24.70
5.500
0.415
4.670
22.54
18.40
5.750
3.812
4.250
3.000
3.000
5.500
25.20
6.625
0.330
5.965
22.19
24.87
7.000
5.315
4.500
3.000
3.000
5.500
27.70
6.625
0.362
5.901
24.21
24.00
7.000
5.315
4.500
3.000
3.000
5.500
INTERNAL-EXTERNAL UPSET
4-1/2
5
5-1/2
6-5/8
* Note:This data is based on API 5DP(1st edition Aug. 2010).