This document provides information about Wellcem AS, a Norwegian oil service company that specializes in plugging and abandonment, lost circulation control, and sand consolidation. It discusses Wellcem's research and development focus, global operations, and product ThermaSet, a thermosetting resin that is pumped downhole to isolate zones, strengthen wellbores, and consolidate formations. The document concludes by presenting several case studies where ThermaSet was successfully used for plugging and abandonment, lost circulation control, sustained casing pressure remediation, and sand consolidation.

1. Copyright © Wellcem AS 2015
Well Therapy Solutions
Integrity, EOR and P&A
February 2016

2. Copyright © Wellcem AS 2015
 Private owned Norwegian oil service company
 Headquartered in Norway with branches located
around the world.
 Wellcem’s state of the art laboratory is located Norway
and is heavily involved in both research and
development projects as well as operational field
support.
 Research and Development plays a key role in the
company’s business model with focus on our
customer’s current and future needs.
Wellcem introduction
To be a leading provider of technology for
Plugging, Lost Circulation, Leak Stop, and
Sand Consolidation in Oil and Gas wells.
Vision
R&D
Partners

3. Copyright © Wellcem AS 2015
Clients and operations
 Europe
 Headquarters, Klepp Norway
 Middle East
 Dammam, KSA
 Dubai and Abu Dhabi, UAE
 Muscat, Oman
 Kuwait
 Asia
 Kuala Lumpur, Malaysia
 North America
 Houston, Texas US

4. Copyright © Wellcem AS 2015
ThermaSet® is a thermosetting resin that is pumped downhole in a liquid state.
 The curing process is activated downhole by temperature.
 A non-reactive polymer – particle free liquid
 Specific gravity can be adjusted from 0.7 - 2.5 SG
 Viscosity range 10 - 2000 CP
 Operating temperature range from -9 to 150 °C BHT, resistant to 320 °C in cured
conditions

5. Copyright © Wellcem AS 2015
Well Therapy Solutions
Specifications:
 Particle free fluid
 Specific gravity can be adjusted from 0.7 - 2.5 SG
 Viscosity range 10 – 2000 CP
 Operating temperature range from -9°C to 150°C
BHT, with physical and chemical resilience up to
320°C in its cured state.
Common applications:
 Competent well barrier for permanently abandoning wells
 Lost Circulation control – Treat & Drill without POOH
 Well bore strengthening
 Zonal Isolation / Water and Gas Shut off
 Strengthening the shoe
 Weak formations and zones with low fracture gradients
where low density systems are required i.e. foam cement.
 Consolidation of loose formations

6. Copyright © Wellcem AS 2015
Compressive Strength (psi)
Flexural Strength (psi)
Youngs Modulus (ksi)
Rupture Elongation (%)
ThermaSet ® Portland Cement
Mechanical Properties
11,168
6,526
324.884
3.5
8,412
1,450
536.639
0.01

7. Copyright © Wellcem AS 2015
Precision intervention
 Easy pumpable and can be placed with high
precision in the well
 Tunable density, viscosity and curing time
 Reduce WOC = Save time and reduce cost
BHT
Curing time
Density
Viscosity
http://www.wellcem.no/videos

8. Copyright © Wellcem AS 2015
Typical Operation execution model
Preparation:
 Arrangement of required materials
 Operation envelop ( In-house reactivity tests at all expected
downhole temperature values)
 Development of operational procedures for all possible scenarios
 Quality check of material and optimization of recipe in labs at well
conditions.
 Preparation of required equipment , materials and its
mobilization according to schedule
Execution:
 Inspection and quality check of equipment and materials on site
 Mixing and pump of ThermaSet® pill as per job specific
operational procedures
 Verifying the curing and plug integrity as per operational
procedures
 Handling of excess material and cleaning/flushing of surface
equipment as per operational procedures

9. Copyright © Wellcem AS 2015
Well Therapy Solutions
54
63
10
Sustained Casing pressure
Lost Circulation
Benefits of ThermaSet® :
 Superior, long lasting mechanical properties
 Temperature activated, particle free resin
 Easy pumpable and can be placed with high precision in the
well
 Tunable density, viscosity and curing time
 Right angle setting profile translating to a very quick transition
 Higher compressive, tensile strength and shear bond VS
conventional cement
 More flexible/not brittle/ Gas tight/ Good bonding to steel
 Will penetrate deeper into formations
 Significantly reduced WOC /rig time – Saving cost
 Qualified to the Norwegian NORSOK STANDARD D-010, as a
permanent P&A material
 Easy to prepare and handle on location
28
Tubular integrity
Plug & Abandonment
Comprehensiverunrecord

10. Copyright © Wellcem AS 2015
CASE HISTORIES
 Plug & Abandonment
 Lost Circulation
 Sustained Casing pressure
 Sand Consolidation
 Gas/Water shut-off

11. Copyright © Wellcem AS 2015
Pre-Placement Post-Placement
Operation
• Temporary P&A
Well
• Oil
• Depleted reservoir
• Parted tubing at 8496ft MD
• Perfs – 10850 – 11050ft MD
Plug
• Resin 28 m3
Result
• 100%
Isolation
Hod Field
The North Sea / Norwegian Continental Shelf

12. Copyright © Wellcem AS 2015
Pre-Placement Post-PlacementOperation
• Temporary P&A
Well
• Gas
• Depleted reservoir
Plug
• 26 m3 of
ThermaSet® Results
• 100% isolation
West Sole
The North Sea / UK Sector

13. Copyright © Wellcem AS 2015
Challenge:
Solution:
Conclusion:
Karan Field
Middle East
• While drilling the 12½ hole section of a high pressure gas well, the
operator encoutered a theif zone at 10,753’ MD.
• Mud losses were in excess of 480 BPH.
• A 250 Bbl conventional LCM pill was pumped with no success.
• 55 Bbls. of ThermaSet® was pumped through the bit above the thief
zone and allowed to flow into the loss zone
• Once ThermaSet® was allowed to cure, the rig was able to circulate
at 400 BPH.
• Top of the ThermaSet® plug was tagged at 10,705’ MD
• The pill was drilled out at 100 fph without any further losses.

14. Copyright © Wellcem AS 2015
Pre-Placement Post-Placement
Operation
• Remediation of Gas Communication
to Surface.
Well
• Gas observed on sea bed around BOP
• Gas-cut mud observed in returns
Plug
• Squeeze 5 m3 of neat ThermaSet®
Results
• 100% isolation
• Negligible Gas Traces
Goliat
The North Sea

15. Copyright © Wellcem AS 2015
Challenge:
Solution:
Conclusion:
Norwegian Continental Shelf
• The candidate well was a multi-lateral horizontal oil producer.
• One of the lateral junctions was positioned in an unconsolidated
reservoir sand where stability was a major concern.
• Fracture strength of the formation was evaluated to be 580 psi.
• When the well was completed, ThermaSet® was injected into the
sand formation at the junction.
• The lateral was completed with a liner and a screen.
• After ThermaSet® cured, applied pressure to the formation was
increased to 2,610 psi (180 bar).
• ThermaSet® treatment resulted in no sand production from the later
junction formation.

16. Copyright © Wellcem AS 2015
Challenge:
Solution:
Conclusion:
Troll Well E-6
Norway
• The candidate well was completed as a horizontal oil producer.
• After two days of production a large gas flux borke through.
• The well was sht down prior to ThermaSet® treatment
• Logging of the well indicated that the majority (70%) of the gas was
being produced from the last 600’ to 4200’ of the horizontal section.
• A 2400’ crack in the well was also noted dictating that complete
isolation was not the primary objective.
• A ThermaSet® plug was designed to penetrate the sand screen in the
completion assembly and plug the 600’ hole section at the toe.
• Following ThermaSet® treatment the well resumed oil production.
• Some gas was still being produced as anticipated, however at a
considerably lower rate.

17. Copyright © Wellcem AS 2015
Thank you for your
attention !