1. Presentation on ‘Force Modeling for Well
Interventions’ and Field Training
By
KAVI JOSHI
Summer Intern PE- Well Services
Project Guide: ALOK KR. SINGH (PE-WS)
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

2. OVERVIEW
 Project- Force Modeling for Well Interventions using
ORPHEUS (Cerberus)
 Coiled Tubing Force Theory
 Introduction to ORPHEUS
 Coiled Tubing Force Model: Case Study
 Field Training
 Jobs Visited
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

3. Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Coiled tubing force theory
 Calculate in Segments from bottom
Fig. 1: Bottom of CT Segment in the hole

4. Coiled tubing force theory
 Real Force vs. Effective Force
Real Force:
Effective Force:
 Effective force used in TFM
 Real Force for Stress and Strain Calculations &
Output Purpose
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

5. Coiled tubing force theory
 Contact forces play important role
 Capstan/Belt Effect in curved trajectory
 Sinusoidal and Helical Buckling
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Fig. 3: Curved SegmentFig. 2: Sinusoidal and Helical Buckling

6. Coiled tubing force theory
 Forces Acting on a Coiled Tubing in a Deviated Well
• Axial Force
• Buoyant Force
• Friction Force
 Stresses
• Axial Stress
• Radial Stress
• Hoop Stress
 Fluid Drag
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

7. Introduction to ORPHEUS
 Well Intervention Modeling Package in CERBERUS
 Based on theoretical calculations
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

8. Introduction to ORPHEUS
 Brings together the information in the managers to
run calculations.
 Calculations provide us with answers to many
complicated questions.
 These answers form the basis of our reporting.
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

9. Introduction to ORPHEUS
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Options and Running Parameters
 Inputs :
• CT/WL
• Tools
• Well
• Fluids

10. Introduction to ORPHEUS
 String Editor
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Coiled Tubing Design
• OD
• ID
• Weight
• Length
• Wall thickness
• Tapered or Straight
• Weld Type
• Weak Zones
• Corrosion
• Cut, Splice or Reverse
• String file holds the up to date String History and Fatigue Profile

11. Introduction to ORPHEUS
 Tool Editor
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
• Pulls together tools from the toolboxes into a string

12. Introduction to ORPHEUS
 Well Editor
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

13. Introduction to ORPHEUS
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Fluid Manager
• Contains a library of common fluids, gases and
multiphased combinations.
• Ability to add more

14. Coiled Tubing Force Model
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

15. Coiled Tubing Force Model
 Rotojet XD Wash
 Input Parameters
• Calculation depth: 2125 m.
• CT Speed: RIH= 20.0 m/min POOH=10.0 m/min
• Stripper Friction: 500 lbf
• Reel Back Tension: 500 lbf
• WHP: 130 psi
• Liquid Flow Rate: RIH= 0 bpm POOH= 1 bpm
• Max. Calculation Length: 30.5 m
• Yield Safety Factor: 80%
• Gooseneck Radius: 72 in.
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

16. Coiled Tubing Force Model
 Rotojet XD Wash
 Input Parameters
• Fluid Input: RIH= Nitrogen POOH=Diesel
• Tool String
• CT Connector (2.125 in. OD)
• Motorhead Assembly (2.125 in. OD)
• Rotary Jet Tool (2.125 in. OD)
• Well Fluid: 27 deg API 10%WC 200 scf/bbl
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

17. Coiled Tubing Force Model
 Well Geometry
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

18. Coiled Tubing Force Model
 COMPARISON WITH CIRCA AND FIELD DATA
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Depth (m)
SurfaceWeight(lbs)

19. Coiled Tubing Force Model
 Coiled Tubing and Tool String
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

20. Coiled Tubing Force Model
 Von-Mises Stress
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013
Combination of Axial Stress
Radial Stress
Hoop Stress
Von-Mises Stress
Axial Stress
Radial Stress
Hoop Stress

21. Coiled Tubing Force Model
 Lock Up Limit
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

22. Coiled Tubing Force Model
 Wall Contact force
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

23. Coiled Tubing Force Model
 Helical Buckling
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

24. Coiled Tubing Force Model
 Contingency
• With the well continuing at same parameters, CT Yield
would occur at 2498 m.
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

25. FIELD TRAINING
 JOBS Visited (4 Weeks)
 Slickline Operations
1. Opening Sliding Sleeve Door(SSD) and Jet
Pump Installation
2. Sand Bailing
3. Retrieval of Isolation Sleeve and Installation
of Y-tool Blanking Plug
4. FISHING of B-Shifting Tool
5. MPLT
6. JOHN ENERGY-27 Slickplug installation for
BOP N/D
 Eline Operations
1. Perforation using Eline
2. Installation of Inflatable Retrievable Bridge
Plug
3. RST JOB
4. SCMT Logging
 HSE VISIT in the Mangala field
 Coiled Tubing Operations
1. Matrix Acidizing/Stimulation
2. De plugging and N2 Flow back
3. Well Bore Clean Out
 Well Test Spread
1. Surface Well Testing
 Warehouse Visits
1. Visit to Halliburton Warehouse to see
various completions equipments
2. 16 D 4 ½ “ Jet Pump Assembly NH
Warehouse
3. Visit to WellTekindo (Schlumberger)
warehouse for familiarizing with the
Slickline tools and the SLICKPLUG.
 Drilling Rig- Weatherford 807
1. LWD and MWD Tools
2. TCP Guns
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013

26. ACKNOWLEDGEMENT
Special Thanks To
 Mr. Arunabh Parasher (Mentor)
 Mr. Alok Kr. Singh (Guide)
 Mr. Arun TD
 Entire Well Services Team of Cairn India
 Cairn Logistics Team
 Service Providers (Field Crews):
 Schlumberger
 Baker Hughes
 Halliburton
 Weatherford
Cairn India Summer Intern PE-Well Services: KAVI JOSHI – 2013