XTM XTMF DPR Presentation.

2008 NOV All Rights Reserved

XTM Premium gas-tight metal seal connections Rated for 10,000+ psi.

Drill Pipe Riser Design


eXtreme Torque - Metal Seal

Fatigue Mitigating Thread Form

(XTMF)

Rated to 15,000psi internal gas and 10,000psi external gas

pressure


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).


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.


XT vs. HT

eXtreme Torque Connections

HT

XT




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.




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.


XT MUT Comparison


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


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.


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



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


Example of standard load testing performed for XTM connections


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


XT vs. XT-F (FEA) X

T

XT-

F


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.


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)


Drill Pipe Riser (Example Design)


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


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.


Use a stabbing guide to minimize handling damages associated with miss-stabs


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

XTM XTMF DPR Presentation.

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Transcript of XTM XTMF DPR Presentation.