Post on 14-Jan-2016
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EPST
EPST Electroproject Softtorque
www.softtorque.com
15
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
www.softtorque.comBooth 15
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
www.softtorque.com15
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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
www.softtorque.com15
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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