1 epst epst electroproject softtorque 15 angel catena

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EPST

EPST Electroproject Softtorque

www.softtorque.com

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Angel Catena

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Research and Innovation Division (DRI )

CRIGEN Laborelec CIRSEE COFELY

Research subjects Reduce the costs of the LNG chain Improve the risk control along the entire LNG chain Improve operations in LNG terminals Future - Liquefaction, GTL, NGH, CNG,…

Electroproject part of GDF SUEZ organisation

EPST Electroproject Softtorque

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Odion Ikhajiagbe

Well Engineer

The impact of Soft Torque Technology on Drilling

Performance

Mike Lukyanov

Well Engineer

Conclusions: Stick slip is damaging both for equipment and for cores

STRS aided Qatar Shell in:

• Reducing stick slip by 40%

• Increasing ROP by 30%

• Reducing bit wear

• Good quality cores

STRS is easy to implement and has shown good results

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EPST

Stick Slip

EPST Electroproject Softtorque

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EPST Electroproject Softtorque

History of EPST development

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EPST Electroproject Softtorque

History of EPST development

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EPST Controls Hardware

EPST Electroproject Softtorque

Motor Gearbox

Drill Stringand

Bottom Hole Assembly

VFD

PLC Controller

Profibus 1

HMI (Control panel)

EPST Controller

Profibus 2

Actual speed(digital encoder feedback)

Ethernet

EPST System overview

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Stick Slip Cyclic, heavy torsional vibrations

3-10 second period

Accelerates up to 5x surface speed in “slip phase”

BHA comes to a complete stop in “stick phase”

BHA accelerates up to 5x surface speed in “slip phase”

Reduced ROP, heavy vibrations down hole motor failures, bit damage

Can occurs 50% of on bottom time (!)

3500 3505 3510 3515 3520 3525 3530 3535 3540

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0

5

10

15

20

25

30

35

40

Time [sec]

Tor

que

[kN

m]

Surface torque

Down hole RPM

20 25 30 35 40 45 50 55 600

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100

150

200

250

Time [sec]

RPM

EPST Electroproject Softtorque

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Stick Slip mitigation

EPST Electroproject Softtorque

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Stick Slip mitigation

SOFT TORQUE REDUCES THRESHOLD RPM

EPST Electroproject Softtorque

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Pearl Wells Application:

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Av. 14.9 % Av. 8.9 %

Pearl Wells Application:

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Av. 59.5 ft/hr Av. 77.2 ft/hr

Pearl Wells Application: Improvements in bit performance were observed

Less bit wear and more footage drilled per bit

IADC bit dull grading was used and same crew applied it

Weighted average with respect to footage drilled was

taken

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feet/bitBit Wear

Inner Teeth Outer Teeth

With-Out STRS 2371.9 1.5 3.2

With STRS 2567.6 1.0 2.0

% Improvement 8.2 34.2 37.1

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EPST Electroproject Softtorque

Projects

www.softtorque.com

Rig 45Rig 44

Rig Noble Al WhiteRig Noble Hans Deul

HPEBRig 51

Rig Songa Venus

T201CourageousDeep Driller

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Changbei rig 1 + 2

Saipem 5856 Rig 79Al KhorRig Noble Roger Lewis

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EPST Electroproject Softtorque

Partners

www.softtorque.com

Rig 45Rig 44

Rig Noble Al WhiteRig Noble Hans Deul

HPEBRig 51

Rig Songa Venus

T201CourageousDeep Driller

8

Changbei rig 1 + 2

Saipem 5856 Rig 79Al KhorRig Noble Roger Lewis

Brasil

USA/Canada

China

Middle East

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EPST Electroproject Softtorque

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EPST Electroproject Softtorque

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Thanks for your attention !

Questions ?

EPST Electroproject Softtorque

www.softtorque.comBooth 15

Angel Catena

acatena@electroproject.nl

Tel. 00 31 651400230