As part of the pre-commissioning process operators rely heavily on flooding, cleaning

and gauging pigs, almost always opting for bi-directional discs (easier to reverse if needed). Commissioning largely depends on batching and specialty dewatering pigs. The decommissioning process utilizes both batching and cleaning pigs.

Flooding, Gauging, Batching, Dewatering

BY THE NUMBERS

Chemical, Discs, Cups, Brushes, Scrapers

Magnetic Flux Leakage (MFL), Ultrasonic (UT), Circumferential MFL, Geometry

Tetherless, Double Block, Remote-controlled

Pigging to clean and displace

liquids is essential to maximize throughput and extend offshore asset life. Clear communication and planning is key to eliminate waxy buildup, clear debris from internal pitting, effectively apply corrosion inhibitor and remove water.

Primarily divided between Ultrasonic (UT) and Magnetic

Flux Leakage (MFL) technology, accurate and timely integrity data are critical to the safe operation of offshore lines, particularly as these lines are in an often harsh, high-consequence environment that can be entirely inaccessible to divers.

The purpose of a non-invasive isolation system is to pressure isolate a section of pipeline during

maintenance, emergency repair or construction, while the rest of the pipeline remains at operating pressure. The primary advantage of such systems is the ability to minimize pipeline downtime and reduce lost transmission revenue.

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COMMISSIONING

CLEANING & DISPLACEMENT

INLINE INSPECTION

ISOLATION

THINGS CAN GET CONFUSING JUST BELOW THE OCEAN’S SURFACE, but keeping your lines clean and safe is a clear proposition. Pipeline service providers assist operators in developing and executing customized pigging programs aimed at maximizing throughput and increasing operational safety. Although possibly overwhelming at first glance, these complex programs can be simplified into just four phases.

OFFSHORE PIGGING in 4 phases