varoughneck english
TRANSCRIPT
voestalpine Tubularswww.vatubulars.com ONE STEP AHEAD
voestalpine
VAroughneck –Enhanced Torque Casing Connection
VAroughneck is a joint development between voestalpine Tubulars and RAG, an Austrian oilcompany, especially for well applications where
VAroughneck –A robust casing connection with enhanced torque
rotation of the casing is required.It combines the strengths of API Buttress with theadvantages of VAroughneck.
MAIN CHARACTERISTICS OF API BUTTRESS AND VAroughneckAPI Buttress connection at full make-up
Gap in the middle of the coupling (”J-Distance“)
In deviated well applications, bending loads
in the build zone result in axial tension
and compression loads on the connection.
Due to the thread profile (3° angle on the load
flank, 10° angle on the stabbing flank), the
Buttress connection is able to handle axial loads
without inducing high radial forces to pin and
box.
■ Advantage:
Minimal risk of jump out failures under
bending loads.
■ Disadvantage:
Limited torque due to the J-Distance. The
make-up distance of the Buttress connection
is not controlled by a torque shoulder.
VAroughneck connection at full make-up
Compatibility of VAroughneck with API Buttress
In order to achieve high torque transfer
through the connection, the make-up distance
has to be fixed. In addition to the minimal risk
of thread jump out under bending loads,
VAroughneck has the following advantages.
Advantages■ With the VAroughneck thread design, the
make-up is controlled by pin-to-pin contact.
■ Double torque capability compared to
API Buttress.
VAroughneck and API Buttress can be made-
up together without the use of a crossover.
If the higher torque properties are needed
in specific parts of the string, they can be
2
achieved with the use of a spacer ring to
occupy the J-Distance or with the use of a
thread locking compound, such as Bakerlok®
or Tubelock.
VAroughneck – Designed for the following applications
■ Deviated wells
■ Completion of extended-reach wells
■ Drilling with casing
Comparison of API Buttress with VAroughneck
3
VAroughneck accessories
Licensed machine shops can providethreading services worldwide foraccessories and repair if needed.
API Buttress VAroughneck
[inch] 4 1/2 5 1/2 6 5/8 4 1/2 5 1/2 6 5/8Outside diameter
[mm] 114.30 139.70 168.28 114.30 139.70 168.28
SI Units
Nose length [mm] n/a n/a n/a 6.00 6.00 6.00
Standoff pitch diameter [mm] 113.13 138.53 167.11 113.13 138.53 167.11
Lead [mm/rev.] 5.08 5.08 5.08 5.08 5.08 5.08
Taper [mm/1inch] 1.58 1.58 1.58 1.58 1.58 1.58
Thread length [mm] 92.40 97.16 101.92 98.40 103.16 107.93
Coupling length [mm] 225.40 235.00 244.50 218.00 228.00 237.50
Position triangle stamp [mm] 100.01 104.78 109.54 106.00 111.00 115.75
Size triangle stamp [mm] 9.52 9.52 9.52 6.00 6.00 6.00
USC Units
Nose length [inch] n/a n/a n/a 0.236 0.236 0.236
Standoff pitch diameter [inch] 4.454 5.454 6.579 4.454 5.454 6.579
Lead [inch/rev.] 0.200 0.200 0.200 0.200 0.200 0.200
Taper [inch/1inch] 0.062 0.062 0.062 0.062 0.062 0.062
Thread length [inch] 3.638 3.825 4.013 3.874 4.061 4.249
Coupling length [inch] 8.874 9.252 9.626 8.583 8.976 9.350
Position triangle stamp [inch] 3.937 4.125 4.313 4.173 4.370 4.557
Size triangle stamp [inch] 0.375 0.375 0.375 0.236 0.236 0.236
Advantages of VAroughneck
■ Higher torque transferthan API connections
■ Compatible with API Buttress
■ Suitable for tough field applications
■ Offers the opportunity to rotate the casing string during installation
■ Rotating during cementing leads to improved quality of the cement bond
■ Thread efficiency greater than 100 % guaranteed for each wall thickness
VAroughneck CONNECTION DATA SHEET
1) Uniaxial bending rating is based on compression rating2) Calculation according to API 5C3
4
114.30
6.35
17.26
816
368
342
127
101
98.43
218
106
100
50
816
1001
368
28
6950
5000
5550
6100
[mm]
[mm]
[kg/m]
[KN]
[bar]
[bar]
[mm]
[mm]
[mm]
[mm]
[mm]
[%]
[%]
[KN]
[KN]
[bar]
[°/100ft]
[Nm]
[Nm]
[Nm]
[Nm]
114.30
6.35
17.26
1189
537
438
127
101
98.43
218
106
100
50
1189
1294
537
41
8850
6400
7100
7800
J55Grade L80 N80
4 1/2'' 11.6 lb/ftOutside Diameter / Weight
P110 J55
4 1/2'' 13.5 lb/ft
L80 N80
Pipe body
Outside diameter
Wall thickness
Weight
Yield strength
Internal yield pressure
Collapse pressure
Connection
Outside diameter
Inside diameter
Drift diameter
Coupling length
Make-up loss
Tensile efficiency
Compression rating
Joint strength
API joint strength 2)
Internal yield pressure
Max. uniaxial bending 1)
Connection yield torque
Field make-up
Minimum torque
Optimum torque
Maximum torque
114.30
6.35
17.26
1189
537
438
127
101
98.43
218
106
100
50
1189
1352
537
41
8850
6400
7100
7800
114.30
6.35
17.26
1632
737
523
127
101
98.43
218
106
100
50
1632
1713
737
56
11200
8050
8950
9850
114.30
7.37
20.1
938
428
443
127
99.55
96.39
218
106
100
50
938
1150
428
28
8150
5850
6500
7150
114.30
7.37
20.1
1367
623
589
127
99.55
96.39
218
106
100
50
1367
1486
623
41
11000
7900
8800
9700
114.30
7.37
20.1
1367
623
589
127
99.55
96.39
218
106
100
50
1367
1552
623
41
11000
7900
8800
9700
114.30
7.37
20.1
1877
856
737
127
99.55
96.39
218
106
100
50
1877
1971
856
56
13200
9500
10550
11600
P110
4.5
0.250
11.60
183000
5344
4960
5
3.796
3.875
8.583
4.173
100
50
183000
225000
5344
28
5150
3700
4100
4500
[inch]
[inch]
[lb/ft]
[lbs]
[psi]
[psi]
[inch]
[inch]
[inch]
[inch]
[inch]
[%]
[%]
[lbs]
[lbs]
[psi]
[°/100ft]
[ftlbs]
[ftlbs]
[ftlbs]
[ftlbs]
4.5
0.250
11.60
267000
7783
6352
5
3.796
3.875
8.583
4.173
100
50
267000
291000
7783
41
6550
4750
5250
5800
4.5
0.250
11.60
267000
7783
6352
5
3.796
3.875
8.583
4.173
100
50
267000
304000
7783
41
6550
4750
5250
5800
4.5
0.250
11.60
367000
10690
7580
5
3.796
3.875
8.583
4.173
100
50
367000
385000
10690
56
8250
5950
6600
7250
4.5
0.290
13.50
211000
6202
6425
5
3.919
3.795
8.583
4.173
100
50
211000
258000
6202
28
6000
4300
4800
5300
4.5
0.290
13.50
307000
9034
8542
5
3.919
3.795
8.583
4.173
100
50
307000
334000
9034
41
8100
5850
6500
7150
4.5
0.290
13.50
307000
9034
8542
5
3.919
3.795
8.583
4.173
100
50
307000
349000
9034
41
8100
5850
6500
7150
4.5
0.290
13.50
422000
12410
10690
5
3.919
3.795
8.583
4.173
100
50
422000
443000
12410
56
9750
7000
7800
8600
Pipe body
Outside diameter
Wall thickness
Weight
Yield strength
Internal yield pressure
Collapse pressure
Connection
Outside diameter
Inside diameter
Drift diameter
Coupling length
Make-up loss
Tensile efficiency
Compression rating
Joint strength
API joint strength 2)
Internal yield pressure
Max. uniaxial bending 1)
Connection yield torque
Field make-up
Minimum torque
Optimum torque
Maximum torque
SI Units
USC Units
5
168.28
7.32
29.76
2040
420
234
187.7
153.2
150.47
237.5
115.75
100
50
2040
2177
420
28
21000
15100
16800
18500
139.70
9.17
29.76
2850
871
765
153.7
121.40
118.19
228
111
100
50
2850
2972
840
45
25500
18000
20000
22000
168.28
7.32
29.76
2040
420
234
187.7
153.2
150.47
237.5
115.75
100
50
2040
2265
420
28
21000
15100
16800
18500
L80 N80 L80 N80 L80 N80 L80 N80
5 1/2'' 17 lb/ft 5 1/2'' 20 lb/ft 5 1/2'' 23 lb/ft 6 5/8'' 20 lb/ft 6 5/8'' 24 lb/ft 6 5/8'' 28 lb/ft 6 5/8'' 32 lb/ft
168.28
8.94
35.72
2471
513
397
187.7
150
147.22
237.5
115.75
100
50
2471
2628
513
28
28800
20750
23050
25350
168.28
8.94
35.72
2471
513
397
187.7
150
147.22
237.5
115.75
100
50
2471
2736
513
28
28800
20750
23050
25350
168.28
10.59
41.67
2893
608
563
187.7
147.35
143.92
237.5
115.75
100
50
2893
3089
608
28
34500
24850
27600
30350
168.28
10.59
41.67
2893
608
563
187.7
147.35
143.92
237.5
115.75
100
50
2893
3207
608
28
34500
24850
27600
30350
168.28
12.06
47.62
3266
692
712
187.7
145.7
140.97
237.5
115.75
100
50
3266
3481
677
28
38000
27350
30400
33450
168.28
12.06
47.62
3266
692
712
187.7
145.7
140.97
237.5
115.75
100
50
3266
3619
677
28
38000
27350
30400
33450
139.70
10.54
34.23
3242
1001
1002
159.0
118.60
115.44
228
111
100
50
3242
3375
1001
45
30000
22050
24500
26950
139.70
7.72
25.3
2426
733
516
153.7
123.75
121.08
228
111
100
50
2426
2531
733
45
20000
15300
17000
18700
P110 P110 P110
6.625
0.288
20.00
459000
6090
3390
7.39
6.031
5.924
9.35
4.557
100
50
459000
489000
6090
28
15500
11150
12400
13650
5.5
0.361
20.00
641000
12640
11100
6.050
4.780
4.653
8.976
4.370
100
50
641000
667000
12360
45
18800
13300
14750
16250
6.625
0.288
20.00
459000
6090
3390
7.39
6.031
5.924
9.35
4.557
100
50
459000
509000
6090
28
15500
11150
12400
13650
6.625
0.352
24.00
555000
7440
5760
7.39
5.906
5.796
9.35
4.557
100
50
555000
592000
7440
28
21250
15300
17000
18700
6.625
0.352
24.00
555000
7440
5760
7.39
5.906
5.796
9.35
4.557
100
50
555000
615000
7440
28
21250
15300
17000
18700
6.625
0.417
28.00
651000
8810
8170
7.39
5.801
5.666
9.35
4.557
100
50
651000
693000
8810
28
25450
18300
20350
22400
6.625
0.417
28.00
651000
8810
8170
7.39
5.801
5.666
9.35
4.557
100
50
651000
721000
8810
28
25450
18300
20350
22400
6.625
0.475
32.00
734000
10040
10320
7.39
5.736
5.55
9.35
4.557
100
50
734000
783000
9820
28
28050
20150
22400
24650
6.625
0.475
32.00
734000
10040
10320
7.39
5.736
5.55
9.35
4.557
100
50
734000
814000
9820
28
28050
20150
22400
24650
5.5
0.415
23.00
729000
14530
14540
6.260
4.669
4.545
8.976
4.370
100
50
729000
759000
14530
45
22150
16250
18050
19850
5.5
0.304
17.00
546000
10640
7480
6.050
4.872
4.767
8.976
4.370
100
50
546000
568000
10640
45
14750
11300
12550
13800
Other dimensions and grades as well as 20° beveled couplings available on request.
VAroughneck –Tested in order to verifythe product specifications
■ Make-and-break testsAll torque-turn-diagrams show the same
characteristics until the optimal torque has
been reached. No galling was observed after
several make-ups.
■ Connection yield torque testsConnection yield torque value includes
sufficient safety factors for field application.
■ Tension to failure testsNeither connection leakages nor structural
failures were detected after the tests.
■ Initial tests related to CAL I Series Baccording to ISO 13679
Structural integrity was successfully
demonstrated. The connection did not exhibit
a hydrostatic leak through the test program,
which incorporated the 95% VME envelope.
■ Fatigue testsIn deviated wells the pipes are subject to
bending stresses that vary depending on the
well design. Additionally, if the string is rotated
during installation or cementing, the pipe
connections are subject to cyclic compression
and tensile loads.
To study this fatigue scenario, voestalpine
Tubulars built a fatigue testing machine and
tested the connection under bending and
rotating conditions that simulated different
well deviations. The maximum deviation tested
was 34° per 100 ft.
Connections have been tested in a rotating
fatigue test frame up to 1,100,000 revolutions
without failure.
Fatigue limit test with rotating fatigue test frame at voestalpine Tubulars
6
First field installation of 4 1/2”VAroughneck at RAG well in Winkl (Austria)
Due to the high torque values anticipated in the well design, aconnection with torque capabilities higher than API connectionswas needed.
Well design:
The recorded torque-turn-diagrams from field make-up showedgood and reproducible results. Therefore, the make-up can bedone without a torque-turn-monitoring system, if it is ensuredthat the given yield torque is not exceeded.
Typical torque-turn-diagram of a VAroughneck connection
During installation of VAroughneck, torque-turn-monitoring was used to demonstrate proper make-up, identify possible difficulties and reveal any possible risks.
7
TORQUE
TURNS
DEPTH
[m]
EXTENDED REACH [m]
voestalpine Tubulars GmbH & Co KGAlpinestrasse 178652 Kindberg-Aumuehl, AustriaT. +43/50304/23-0F. +43/50304/[email protected] 1st
Edi
tion
prin
ted
Dec
embe
r 20
11