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XTM Premium gas-tight metal seal connections Rated for 10,000+ psi.
Drill Pipe Riser Design
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eXtreme Torque - Metal Seal
Fatigue Mitigating Thread Form
(XTMF)
Rated to 15,000psi internal gas and 10,000psi external gas
pressure
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eXtreme Drill Pipe Riser Advantages Looks, feels, handles like conventional drill pipe R2 or R3 Tubes with wall thickness up to 1-1/4 for preferred
welded product Incorporates gas-tight metal seal connection type
No need for less reliable, time/manpower consuming teflon seal ring Connection rated to 15,000psi internal and 10,000psi external gas pressures Potentially good for 100+ make-ups before requiring machining 12 Pin and 15 Box tong lengths permit 4-6 recuts per end Fatigue mitigating thread form (superior to all industry rotary shoulder TJ
connections)
Slip-Proof tube option (reduce damages associated with hanging in the slips)
NACE compliant (65% - 85%) Material Grade Options (includes both tube and tool joints. Welds to be tested for informational purposes only).
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eXtreme Torque Connections eXtreme Torque Connections
Second generation double-shouldered tool joint, which evolved from the HI TORQUE (HT) connection design.
Flatter taper results in 25% - 30% torque improvement over HI TORQUE. Both API and HT connections incorporate a 2 taper per
foot. XT connections have a taper per foot, increasing cross-
sectional area at critical load bearing region of thread.
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XT vs. HT
eXtreme Torque Connections
HT
XT
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eXtreme Torque Connections
eXtreme Torque Connections
Pin Base Pin base extends in spring like manner when joint is bucked up to recommended make-up torque
Primary Shoulder Provides seal and preload just as on conventional tool joint.
Optional Metal Seal
Box Counterbore Section Compresses in spring like manner when joint is bucked up to recommended make-up torque.
Secondary Shoulders Do not contact when joint is hand tight. When joint is bucked up to recommended make-up torque, they do contact.
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eXtreme Torque Connections
eXtreme Torque Connections
Primary Shoulder
Pin Box
Secondary Shoulder Pin base Box Counterbore
Secondary shoulder increases torsional strength by 40% (HI TORQUE) to 70% (eXtreme Torque).
Smaller OD and larger ID for slimhole drilling and improved hydraulics.
Increased torsional strength. Increased OD wear allowance.
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XT MUT Comparison
eXtreme Torque Connections
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
3-1/
2 X
1-3/
4
4 X
2-5/
32
4-3/
4 X
2-9/
16
5-1/
4 X
2-13
/16
6-1/
4 X
3-1/
4
6-5/
8 X
3-1/
2
7 X
4
8 X
5
Tool Joint Dimensions (in.)
Mak
e-up
Tor
que
(ft-lb
s)
API
HT
XT
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eXtreme Torque - XT-M Connections
XT and XTM are identical, except for the addition of the radial metal seal on XTM. Connections are not interchangeable.
Radial metal-to-metal internal pressure seal provides superior leak resistance in high pressure applications while maintaining torsional capacities equivalent to XT connections.
Seal integrity is not effected by multiple trips.
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Metal-to-metal radial seal provides gas-tight pressure integrity. Resilient 15-degree metal-to-metal seal extends the circumference
inch up from the pin nose. The pin nose is not a seal, therefore minor damage and pitting are
permissible without adversely affecting the performance of the connection.
Pin Nose
Pin
Seal
Box
Threads
Metal-to-Metal Radial Seal
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eXtreme Torque Connections
XT-M
Single string can be used for drilling, drill stem testing, under-balance drilling, work-over and completion operations, especially those requiring gas-tight high pressure capacity.
Use in drill pipe riser applications reduces risks and increases seal and string pressure integrity.
XT-M Operational Advantages
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Example of standard load testing performed for XTM connections
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XT vs. XT-F
Criterion XT XT-F
Taper 0.75 in/ft 0.75 in/ft
Threads per inch 3.5 3.5
Thread root radius 0.042 in. 0.060 in. X 0.065 in.
Tension X X
Torque Y Y
Interchangeability Yes Yes
Only Difference between XT and XT-F is the thread root design
XT-F has larger double root radius
Larger root radius = reduced max principal stress = improved fatigue performance
XT-F is fully interchangeable with XT
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XT vs. XT-F (FEA) X
T
XT-
F
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XT-F Fatigue Test Results
Fatigue Test Results of 4-7/8 x 2-9/16 Connections
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
100,000 1,000,000Cycles to Failure
Stre
ss a
t Las
t Eng
aged
Thr
ead
(psi
)
HT38XT39XT-F39
XT-F offers approximately 60% more fatigue life than the XT connection.
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6-5/8 (0.500 wall) IEU X-95 R3 XTMF-65 (8-1/4 x 5-1/4) 12P.15B
45 ft OAL 95 ksi tube material strength Pressure rated gas-tight connection Fatigue mitigating thread form 8-1/4 OD tool joint for ample elevator carrying capacity 5-1/4 (or larger) ID tool joint for improved ID tool
passage Extended tong lengths for increased connection recuts
Drill Pipe Riser (Example Design)
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Drill Pipe Riser (Example Design)
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FOR REFERENCE ONLY
Drill Pipe Riser Performance Characteristics Pipe Size and Weight: 6-5/8" 0.500 IEUVersion 2000.1.3 - Engineering Release Pipe Grade: X-95
Range: 3Tool Joint: 8.500 X 5.250 XTMF-69
PipeNew New
OD (in) 6.625 Torsional strength (ft-lbs) 125,300 Wall thickness (in) 0.500 Tensile strength (lbs) 914,000
ID (in) 5.625 Calculated plain end weight (lbs/ft) 32.673 80% Torsional strength (ft-lbs) 100,200
Cross sectional area pipe body (in) 9.621 Pressure capacity (psi) 12,547 Cross sectional area OD (in) 34.472 Collapse capacity (psi) 12,938 Cross sectional area ID (in) 24.850
Section modulus (in) 13.711 Polar section modulus (in) 27.422
Tool Joint (120000 material Yield Strength) Drill pipe assembly with Grant PridecoXTMF-69 OD (in) 8.500 XTMF-69 eXtreme Torque Connection
ID (in) 5.250
Pin tong length (in) 12.0 Adjusted weight (lbs/ft) 37.82Box tong length (in) 15.0 Approximate length (ft) 44.07
Torsional Strength (ft-lbs) 154,800 Fluid displacement (gal/ft) 0.579Max Recommended Make-up Torque (ft-lbs) 92,900 Fluid capacity (gal/ft) 1.277Min Recommended Make-up Torque (ft-lbs) 77,400
Drift size (in) 5.125Balance OD (in) 8.389
Tensile strength (lbs) 1,770,100Tool joint/Drill pipe torsional ratio (New pipe) 1.24
Minimum make-up is based on shoulder separation caused by bending.
BC 5/11/2006
Tong lengths reflect longest possible from forgings for this size connection
5-1/4 TJ ID for improved ID tool passage
eXtreme Torque (XT) connection with gas-tight metal seal & fatigue mitigating thread form
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Comparison of eXtreme Torque and Conventional Tool Joint tong lengths
CONVENTIONAL TOOL JOINT (10 PIN X 13 BOX TONG LENGTH)
XTMF (12 PIN X 15 BOX TONG LENGTH)
Tool Joint tong lengths are designed to permit 4 6 recuts, per end, depending on level and location of damage.
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Use a stabbing guide to minimize handling damages associated with miss-stabs
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www.nov.com/grantprideco/customerfeedback
Drill Pipe Riser DesignSlide Number 2eXtreme Drill Pipe Riser AdvantageseXtreme Torque ConnectionsXT vs. HTeXtreme Torque ConnectionseXtreme Torque ConnectionsXT MUT ComparisoneXtreme Torque - XT-M ConnectionsSlide Number 10Slide Number 11Slide Number 12Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 21Slide Number 23