Corrosion is inevitable within a pipeline, however taking a proactive approach to preventative maintenance can save you thousands, if not millions of dollars in repair, replacement, or environmental clean-up costs. Liquids of any kind can pose risks in both oil and gas pipelines. Low spots in oil or gas pipelines can accumulate liquids (condensate or water) causing a breeding ground for bacteria that can cause pitting of the pipeline wall.
Because water is heavier than oil, water settles in low evolutions of the pipeline route. If a corrosive component in the production fluids is present, the the low areas of the pipeline have the most potential for Microbiologically Induced Corrosion (MIC).
Periodic pigging is an effective and efficient way to prevent standing liquids from compromising the integrity of a pipeline. A pigging program that includes the use of pigs with heavy duty bristles and pit cleaning brushes are highly effective in both swiping the liquids downstream, and out of pits. Removing the liquids from the pits allows the pipeline wall to more adequately accept biocides to treat bacteria corrosion.
Inline Services has developed a number of displacement pigs and scraping pigs to remove liquids from pipelines. Our patented Foam Disc Pig is flexible and has multiple sealing/wiping discs to effectively remove liquid pockets. We have also developed a Steel Mandrel bodied pig with a unique configuration of discs and cups that has proven optimal liquids removal depending on the type of line, length, number and radius of bends and frequency pigging is required. Inline Services mandrel pigs are available with both discs, cups and combinations of both depending on pipeline conditions.
27731 Commercial Park Road
Tomball, Texas 77375
Tel: +1 -281.401.8142
Toll-Free: +1 -888.973.0079
Fax: +1 -281.401.8147
Simple Pigging System with Drop-Out
Simple Pigging System Closure
This animation demonstrates a simple pigging system closure. Inline’s VIPRS pig is positioned in the launcher as the product is run through the pipeline. At the end of the product run, the VIPRS pig is launched to remove all product from the line. The pig will trigger the indicator to alert that the pig has reached the end of the line.
Bi-Directional Pigging
This animation demonstrates Bi Directional Pigging. Inline’s VIPRS pig positioned in the launcher as product is run through the pipeline. At the end of the product run, the VIPRS pig is launched to remove all product from the line. When the VIPRS pig reaches the JB receiver, the propelling media is turned-off. When this happens the VIPRS pig is resting at the jail bar in the JB receiver; propellant is used on the receiver side of the pig to return it to the launcher.
Automated CIP System
This animation demonstrates a fully automated VIPRS bi directional pigging process system with CIP. Inline’s VIPRS pig is first positioned in the pig launcher. The product is pumped from the storage tank to the destination. The VIPRS pig is then launched to push the remaining product to the destination and captured in the VIPRS wash chamber at the destination station. Next, the CIP solution is pumped through the line to wash the chamber and pig. Finally, the pig pushes the CIP solution out of the piping and leaving the pig clean and ready for the next product run.
