This presentation summarizes Schlumberger's well intervention process using coiled tubing units. It discusses Schlumberger's safety plan and techniques for injury prevention. It then provides an overview of the coiled tubing unit components including the power pack, control cabin, coiled tubing reel, injector head, and pressure control equipment. It also briefly discusses fluid and tool conveyance applications of coiled tubing as well as other learnings around pumping systems and inventory management. The presentation aims to provide a high-level overview of Schlumberger's well intervention process with coiled tubing.

1. Final Presentation
Muhammad Hassaan Rana
Intern
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2. W E L L I N T E R V E N T I O N
Introduction
Upstream, Midstream and Downstream
An 80 years old Schlumberger team, working in 89 countries
Slogan: People, Technology and Profit
Accountability, Risk Management and Communication
SIPP(Schlumberger Injury Prevention Plan)
PPE (Personal Protective Equipment) is mandatory for yard
Efforts of the team > Individual efforts

3. W E L L I N T E R V E N T I O N
SIPP
Risk analysis
Protection through positive intervention
Body control techniques
 Line of strength
 Side stepping
 Safe working zone
 Smart grip
 Watch your head
 Bracing and Spinal alignment

4. W E L L I N T E R V E N T I O N
Brief geological summary
Oil formation
 Layers of kerogen (shales)
 Porosity and Permeability
Seismic Acquisition
 Oil and gas exploration
Concept of Super saturation
 Precipitation
 Deposition of fill materials
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Figure 2: Seismic Aquisition
Figure 1: Shale

5. W E L L I N T E R V E N T I O N
Well: Bird’s eye view
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Reservoir hunt
Drilling
Open well logging
Cementing
Well completion
 Production Tubing
 Christmas Tree
 Rig up
Underground blasting
Figure 3: Pictorial view

6. W E L L I N T E R V E N T I O N
Treating Equipment
Color distinction
Low pressure equipment
 Various types of hoses
 Unions
 Butterfly valves
High pressure equipment
Adaptors:
Used to join one type of connection to another connection
Flange connection:
 To connect a wellhead
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7. W E L L I N T E R V E N T I O N
Cont.
2-in loop connection:
 A combination of two Chiksans
Chiksan swivel joint:
 To absorb shock and for flexibility
 2-way (for changing direction)
 3-way (for changing elevation)
Check valve:
 One directional flow
Plug valve:
 To control pressure on high pressure lines

8. W E L L I N T E R V E N T I O N
Coiled Tubing
Brief history
Premier functions
( Fill material = Unhappy Client = Unhappy you)
Advantages over other technologies
 Highly deviated and horizontal wells
 Ability to pull and push
 Fluid and Tool Conveyance
Almost any job can be done with CT
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Figure 4: Scaled-up Tubing

9. W E L L I N T E R V E N T I O N
Fluid Conveyance
Nitrogen Kickoff
 Hydrostatic pressure difference maintenance
Fill Removal
 Fluids to clean out the fill material
Cement Placement
 Reduction of slurry contamination, accurate placement
Stimulation
 Improving permeability
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10. W E L L I N T E R V E N T I O N
Tools Conveyance
Coiled tubing fishing and milling
 Advantages of using CT
Downhole valve manipulation
 To control the flow from various zones
Blasting Services
 Acid washes, scale removal etc.
Zonal Isolation
 Separation of zones via packers and plugs
CT logging
 Real time data for analysis
CT Drilling
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11. W E L L I N T E R V E N T I O N
Coiled Tubing Unit (CTU)
Offshore and Onshore
3 piece and 4 piece
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Figure 5: Coiled Tubing Unit

12. W E L L I N T E R V E N T I O N
Power Pack
Engine
Hydraulic fluid
Hydraulic Circuits:
 Priority Circuit
 BOP Circuit
 Auxiliary Circuit
 Injector head drive circuit
 Stripper Circuit
 Level Wind Override Circuit
 Reel Drive Circuit
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Figure 6: Power Pack

13. W E L L I N T E R V E N T I O N
Control Cabin
Control Console
 Engine Control Panel
 Hydraulic Control Panel
Suggestions: Cameras
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Figure 7: Engine Control
Figure 7: Hydraulic ControlFigure 8: Control Cosole

14. W E L L I N T E R V E N T I O N
CT Reel
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Figure 9: CT Reel

15. W E L L I N T E R V E N T I O N
Injector Head
4 hydraulic motors
2 chains
2 studs
1 Load cell
10 gauges
2 couplings (QDs)
144 Gripper blocks
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Figure 10: Injector Head

16. W E L L I N T E R V E N T I O N
Pressure Control Equipment
Stripper
BOP
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Figure 11: Stripper and BOP

17. W E L L I N T E R V E N T I O N
Miscellaneous Learning
STEM
Inventory
C-Pump
Triplex pump
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Figure 13: Triplex pump
Figure 12: Centrifugal pump

18. W E L L I N T E R V E N T I O N
Q & A
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