1. Slickline realtime technology creating new options for reducing
offshore footprint on remedial operations.
Clement Laplane, Schlumberger
Gilles LeBlanc, Total
3. SchlumbergerConfidential
Conventionnal Slickline
Benefits
— Small footprint, mechanical integrity, logistical
simplicity, operational efficiency, cost effectiveness.
Limitations
— Downhole tool capability / activation, Depth control,
Memory based
Digital Slickline
Real time telemetry
— Access to wellbore information & send command from
Surface.
— Depth Control / Activation of Advanced tool
Without compromising
— Operational efficiency (minor set up modification )
— Functionality (Jarring, speed, Sealing)
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Introducing real time Slickline
4. SchlumbergerConfidential
Mechanical integrity of coated cable is not
compromising operational efficiency and
functionality:
- Std Sealing - Running speed / jarring capability
/ safe operation / environment.
- Low surface voltage - Does not need Zone II
pressurized equipment
Creating operational constrain and limitation;
– Grease injection - affecting running
speed / Jar capability. Logistic, rig up
height, environment (leak, contamination)
– Risk of stranded wire/ bird cage requiring
complex fishing.
– Heavy wire (logistic)
– High Voltage - Additional pressurized
cabin
Telemetry Principle and advantages
Multi-Conductor Cable
Multi Layer concept
Digital Slickline Cable
Coated cable concept
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Using tubing / insulated cable for
telemetry
and downhole battery
for power
5. SchlumbergerConfidential
DIGITAL SLICKLINE CORE TOOLS
• Cable head
• Basic Measurement Cartridge
– shock / tension / deviation / movement
• Depth Correlation Cartridge (GR/CCL)
DIGITAL SLICKLINE SURFACE EQUIPMENT
• Standard winch / drum / pulleys / stuffing box
• Surface Transceiver and PC
DIGITAL SLICKLINE CABLE
• Std 5R60 Sandvik cable
• 1870 lbs (108)
• 2500 lbs (125)
• Polymer coated
• Standard SLK compatible
Real time Slickline Set up
010111010001…0101
Telemetry – Up/Down
Battery – Power complete string
Record sensor information
DHTE/Shock/Deviation
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7. SchlumbergerConfidential
K5-D3: Reason for Choosing DSL
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* Naturally Occurring Radioactive Material
Overall situation
Southern North Sea, Dutch Sector, Operated by Total
Platform crane weight limitation < 5tons
Limited deck space (simultaneous operations)
Unmanned Platform
Need for accuracy while perforating
Well NORM* classified
Weather condition – flight limitation
Conventional perforating option would have been :
– SLK (Dummy and protection sleeve) Electric line for Perforation
– SLK with Efire with possible extra correlation runs
8. SchlumbergerConfidential
K5-D3: Operation Program and Toolstring
Well condition
– BHT 125°C, BHP 207 bar, Gas well, 2%
CO2, No H2S, dev 54Deg, Perforation
depth: 4827m.
Charge used
– 2in HSD Power Jet Omega, D-TrigII (with
Secure2 detonator)
– Gun length 6m Max / run due to deck space
limitation (Surface logistics)
7 perforations runs
– Set / retrieve protection sleeve every day
– Dummy Run 4858m
– Punch Zone 1 - 4827m (1 Runs)
– Perforate Zone 1 - 4827m (2 runs – 9m)
– Perforate Zone 2 - 4814m (4 runs - 20m)
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Rope Socket
Telemetry
Shock, DHTE, Angle
Correlation cartridge
GR, CCL
Pressure temp
Trigger
Secure II
Firing head
Safety fuse
Gun
Zone 1&2
20°Deg
Water Level
2100m
11. SchlumbergerConfidential
K5-D3: Job Results
Job results:
Job successful – perforation on Depth
No NORM residue on cable.
Positive indication from surface
Highlights:
All perforation (29m) within 0.15m accuracy.
12 m / 300 lbs T/String compatible with 0.125” SWL.
2 run per days Running speed up > 250 m/min
Robust and reliable telemetry @ 4827m (15,836ft)
Operation completed with only SLK (DSL) no E-Line required.
Learnings:
Mis-run due to swollen boot due to CO2 – Changing material
Battery disconnection due to shock – Re log perf interval.
- Increasing spring contactor
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12. SchlumbergerConfidential
Performance review – Advantage and benefit
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Cost Time Function HSE
– Less People and Equipment on well site
Logistic / handling / Pressure / lifting / rig up-down / flight /
supply boat / Bed space
X X X
– Access to remote location
Deck space / Crane limitation
X X X X
– Sealing Capability
Running speed / Jarring capability / Environment friendly/
NORM* Suitable
X X X X
* Naturally Occurring Radioactive Material
Fatality, LTI, RWDC
MTC ,
Material Productivity Loss
Pollution/Spill
Occupational Illness
Near Miss
First Aid Case
Security 0
Fire and Explosion 0
Vehicle Incident
HIPO
13. SchlumbergerConfidential
Conclusion
Digital slickline provide
Depth Correlation with Wireline Accuracy
Real time Activation & Perforation
with inherent benefits of SLK
Small footprint, Light equipment, Jarring capability
No grease injection (NO NORM)
Reduced crew, Quick rig up cost effective …
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Thanks for your Attention !
