monday, april 29, 2019 - nacenace-jubail.org/meetings/nace-j_seminar_2019/nace-j...protection of...
TRANSCRIPT
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Monday, April 29, 2019
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- General Introduction to Corrosion.
- Highlighting the shortcomings of coatings in the Oil&Gas industries.
- Photo impressions
- Introduction to STOPAQ
- History and Evolution of STOPAQ (Timeline)
- International Approvals, Tests, and Reports on STOPAQ – Visco-Elastic Coating.
- Video Demonstration for the application of STOPAQ (Lay-barge and Subsea).
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Outline
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What is corrosion?
- Corrosion is a common occurrence in metals and is reflected as the degradation of metals through oxidation, bacterial growth, and electrochemical reactions .
- Consequences are hazardous, mainly in the Oil & Gas, and Water industries (pipelines and pipeline systems).
- Output of corrosion on the Oil and Gas, and Water industries is highly expensive in terms of rehabilitation and reconditioning of pipelines.
What induces corrosion to take place?
- Presence of water (Electrolyte)
- Presence of Oxygen
- Osmosis
- Microbiologically Induced Corrosion i.e. Bacterial growth in the presence of Nitrogen
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Corrosion
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- Throughout history, the main concern for the oil & gas, and water operators/companies has been to establish the first line of defense against corrosion.
- Applying layers of coatings on to the substrates, acting as barriers for resistance.
- Several types of coatings are applied, mainly under controlled environments, out of which we note:* Fusion Bonded Epoxy (FBE)* 2LPO, 3LPO, Coal Tar Enamel,* Asphalt/Bitumen, Liquid Coatings (Spray applied Epoxy, PU),* Heat Shrinkable Coatings, and Tapes.
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Conventional Anti-Corrosion Prevention
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- All of the previously described coating systems witness flaws in the application, stresses, and defects, either at factory level or on field, all of which result in failure and degradation of the coating system.
- Managing this issue has been considered highly expensive, time consuming, and does not resolve the main problem which is corrosion.
- Coating Degradation is caused by all sorts of mechanical stresses, residual stresses , Cathodic Dis-bondment, UV reactions, Permeability, human error, poor mixing, poor application, poor surface preparation etc.
- The results? * Loss of adhesion* Mechanical Damages to both coats and substrates* Cracking of the coats* Cathodic Dis-bondment => * MIC
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Shortcomings of Conventional Coating Systems
CORROSION
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Failures
Stress Cracking
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More Failures
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What is a Viscoelastic material:
- Material that exhibits both viscous and elastic characteristics.
- Witnesses fluid like behavior.
STOPAQ: main properties and characteristics:
- A viscoelastic, and amorphous material,
- Adhesive to a Molecular level to all substrates,
- Cohesive,
- Fully resistant and impermeable to water (and WV), oxygen (among other gases),
- Unable to dis-bond,
- Inert to aging and weathering, whereby has no shelf life
- Requires minimal surface preparation => less incurred expenses for G.W
- Liquid with high viscosity.
- Operational Temperature between -45° C and +95° C.
- The material Flows due to its viscoelastic nature.
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Visco-Elastic Self-Healing Corrosion Prevention System: STOPAQ
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Blasted steel surface, full inflow of coating
Blasted steel surface, partial inflow of coatingBlasted steel surface, no inflow of coating
Adhesion to a Molecular Level (VanderWaals Forces)
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How and Where did it start?
STOPAQ
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1983 – Sealing seawalls against leakage of water
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1992 – started with manhole corrosion prevention
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1996 – NAM PIPELINE (first application on pipelines)
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1996 – First production of STOPAQ Wrappingband
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OGC, Applying STOPAQ in 1997
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1998 – New lines for STOPAQ Wrappingband production were added
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1998 – Trials of CZH - Aramco, Exxon, PDO, PDVSA
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50 meter 56” Sabkha in Saudi Arabia. Success Trial in 1999
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2001 - Stopaq Casing Filler – 1st application in Gulf Region
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2001 - Stopaq Casing Filler Application worldwide
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RussiaPolendIreland
EnglandFrance
The NetherlandsAbu Dhabi 2012
Australia 2012
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•The STOPAQ Corrosion Preventative
System is an unique corrosion protection
wrapping system with special properties
regarding the corrosion protection
philosophy. It consists of a layer of visco
elastic polymer and an ultraviolet resistant
Outerwrap to provide mechanical protection.
•The corrosion protection performance of the
STOPAQ System is regarded as similar or
better than existing corrosion preventative
systems for use in the field.
•Shell Global Solutions regards the STOPAQ
System as a valuable development and
intends to follow field experience within the
Group for further evaluation.
2001 - SHELL Global Solutions “Approval”
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ARAMCO Approval – 20th October 2001
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2003 – 7 years after the application on NAM Pipeline
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Patented products
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Totally unique: Visco-Elastic Characteristic. Patented in 2006
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BASF Cooperation
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2007 - Research & Development Centre
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2007 - R&D Application Engineering
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2007 - Opening Stopaq Training Center - Holland
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2009 – Construction and Opening of the STOPAQ SAUDI Factory (KSA)
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2009 – STOPAQ SAUDI Factory Opening
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Test Area 6,000 sqm
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Harbour Jetty Pile Coating at Testing Area
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2011 - Subsea R&D / Training Center
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New opportunities for Machine Field Coating
Such as:
- Coating near the Ditch
- Coating inside the Ditch
- Fully mobile coating operations
STOPAQ’s Mobile Coating Plants, Application:
- Base coat (STOPAQ)
- Top coat for Mechanical Protection by STOPAQ Fast GRE / PVC
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Girth-Weld Application
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Protecting with STOPAQ
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7 years experiment
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STOPAQ is applicable under extreme weather conditions, anywhere
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Field Joint Application and Wrappingband Machine
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-30 Degrees Celcius – MODA Pipeline
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Kingdom of Saudi Arabia +55 Degrees Celsius
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Offshore – Lay-Barge Application
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Offshore Girth Welds – Lay-Barge Application
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120 km Rehab Project of Continuous Application - 56”
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Coated pipelines – The Netherlands
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Field joint Coating - High Impact Shield
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Transition Lines, Gasunie N.V compressors station
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LNG tanks - Croatia
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Before and After
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Flanges - Underground
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Flange - Above ground
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Protecting Valves
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Small Pipes applications
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Landing Base - PDVSA
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Before After
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Vopak Rotterdam
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Smit Subsea - Boskalis
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STOPAQ
Conclusions:
1. Prevents corrosion, Protects the substrates, for decades (non-aging with a 30-year warranty).
2. Easily and Safely applied to substrates (no pre-requisites)
3. Non toxic, non-curing.
4. Extremely impermeiable to water, oxygen, humidity, and chemicals => Elimination of several corrosion related phenomena.
5. Applicable below ground, above ground, offshore, subsea, under hot, cold, wet, and chemically aggressiveenvironments.
6. Self healing, and will : remain adhesive on substrates and flexible, premanently.
7. Traditional anti-corrosion systems are not meeting end-users’ needs, whereby witnessing coating failures
8. Although we are being copied, however the copiers have not been able to manufacture the visco-elastic properties of STOPAQ, nor anything near the novel of STOPAQ’s patented technologies.
9. Approved by all major O&G and Water operators, KIWA, Shell Global Solutions, ARAMCO, Exxon-Mobile, ADNOC, PDVSA, KOC, PDO etc...
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International Approvals and Recognitions
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Mission and Vision
STOPAQ will continue to develop visco-elastic self-healing corrosion prevention, insulation and sealing solutions for the protection of client's valuable infrastructural assets around the world, fulfilling all markets’ requirements for a performance guarantee against corrosion, for life, flexibility and permanent bonding power, whilst ensuring respect for the environment and applicator
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Thank you for your attention