SANCCUS have developed a range of water based and glycol based lubricating gels which when used in conjunction with mechanical pigs massively reduce this risk. Being gels they actually offer four benefits in one;
- Surface friction on the discs is reduced by at least 100%
- Bypass on the pig is reduced improving pigging efficiency
- Debris is picked up and safely transported out of the line further reducing disc wear
- Thermal insulation to minimise the risk of discs overheating
These same gels have also been effectively deployed for degassing pipelines from vessels via long downlines because the same lubricating effect also results in a three fold reduction in friction pressure through narrow downlines allowing the application of far more viscous gels that previous possible in subsea to topside operations.