email [email protected]/[email protected]
©2015 IEV Group All Rights Reserved
OXIFREE Corrosion Control Solution Case Study: Application on Offshore
Platform for flange protection Petronas Carigali Vietnam Limited
RUBY FIELD, VIETNAM
Background Petronas Carigali Vietnam Ltd (“PCVL”), a subsidiary of Petronas Carigali Sdn Bhd, is engaged in oil and gas exploration and production activities in Vietnam. PCVL is the operator of Ruby field, Block 1 and Block 2, offshore Vietnam and holds 85% stake of the field while PetroVietnam holds the remaining 15%. The Challenge PCVL offshore production assets have been suffering from ongoing corrosion due to continuous exposure to harsh marine environment such as salt water, salt mist and UV rays. IEV has been approached by PVCL provide a cost effective and safe solution to prevent and control corrosion on flanges, bolted and welded components on its facility. The Solution The Oxifree Corrosion Prevention System ‐ Oxifree TM198 coating was the recommended solution to address this problem. Oxifree was applied to encapsulate all problem areas, bolts, nuts and flanges, on the RDBP‐B Platform to prevent further corrosion. Oxifree TM198 is a long term anti corrosion solution which also reduces offshore maintenance requirements. Prior to coating, a minimum surface preparation was done including cleaning the bolts, nuts and flanges’ surfaces from grease and moisture before Oxifree TM198 was applied. This is done to isolate the atmospheric environment to prevent further ingress of water and/or oxygen that are the agents for corrosion. The Product Oxifree TM198 is a sprayable polymeric resin coating for the protection of metallic components. It contains organic corrosion inhibitors, reusable and provides protection against all corrosive contaminants. Oxifree is enviromentally friendly, easy to strip,re‐usable and recyclable with no harmful chemicals.
Client Profile Client : Petronas Carigali Vietnam Limited Field : Ruby Field Location : Vung Tau, Vietnam Industry : Oil & Gas Industry Weather : Hot and Humid
RUBY FIELD, VIETNAM
The Process The Polymelt 50 ATEX Machine was utilised to facilitate the coating of the flanges at the Main Deck, Cellar Deck, Mezzanine Deck and Sump Deck on the RBDP‐B platform. The process was carried out in two phases:
First Campaign Second Campaign
Coating operation on the process lines in sequence at the specific locations at Cellar Deck and Mezzanine : a) Drain System b) Wash Water Storage Tank c) Instrument Gas Skid d) Production Launcher e) Crude Oil Transfer Pump f) Gas Line g) Diesel Storage Tank (Cellar Deck) h) Wellhead (Mezzanine Deck) i) Vapor Recovery Compressor j) Corrosion Inhibitor/ Chemical Tank 1290 flanges were completely coated (100% of 1st Campaign) in August 2014.
Coating operation on the process lines in sequence at the specific locations at Main Deck, Cellar Deck and Sump Deck: a) Gas Lift Manifold b) Gas Engine Generator c) Diesel Storage Tank (Main Deck) d) Wash Water Pump Skid e) Wellhead (Cellar Deck) f) DIP/CDV 1032 flanges were completely coated (103.2 % of 2nd Campaign) in September 2014.
Summary A total of 2,322 flanges were successfully coated using Oxifree TM198. An average of 51 flanges were coated (two coats) daily (including surface preparation). The time taken to apply two coats of Oxifree TM198 (including surface preparation) took only 45 days. This was achieved due to two factors: 1. The curing time between two coats is only one minute compared to normal paint coating of 12 hours. 2. The minimum surface preparation required for Oxifree (St2) compared to normal paint (SA2.5)
RBDP‐B Gas Lift Manifold before cleaning and
coating
RBDP‐B Gas Lift Manifold after coating
RBDP‐B Production Launched before cleaning
and coating
RBDP‐B Production Launcher after coating
OXIFREE Corrosion Control Solution Case Study: Application on Offshore
Platform for flange protection
Petronas Carigali Vietnam Limited
email [email protected]/[email protected]
©2015 IEV Group All Rights Reserved