Airpac Rentals supplies and operates specialist equipment spreads for a wide range of pipeline and process service applications, supporting commissioning, maintenance, cleaning, product transfer and cuttings transportation projects worldwide.
During the commissioning phase of new pipelines, operators often require high pressure air equipment to dewater and dry pipelines before the introduction of product. This can include offshore-to-shore pipelines, infield pipelines and other pipeline systems requiring controlled drying or pressure testing.
Typical equipment spreads can include booster compressors fed by high pressure primary air compressors, which are used for pipeline pigging operations. Desiccant dryers are often used where dry air is required, or in conjunction with nitrogen membrane units when a pipeline needs to be dried or pressure tested with inert gas.
Equipment spreads and trained operator personnel have been supplied for a wide range of pipeline dewatering and drying projects in many countries. These include Africa, the Middle East, South East Asia, Australia and the North Sea, with projects including Bonga, Burullus, West Seno, Bayu Undan, Blacktip, Pluto, Gorgon, Wheatstone, Inpex, Clair and Britannia Satellites.
The fleet includes one of the largest ranges of Rigsafe and Zone II steam generators, including low weight, small footprint 1.4 MMbtu steam generators ideally suited for pipeline descaling and cleaning applications.
Steam generators provide high volumes of continuous steam, which can be used to heat chemicals for descaling deluge and fire water systems on offshore installations, as well as pipework in oil refineries, power plants and petrochemical plants.
This process can also be used for the liquefaction of solidified residual heavy fuel oils found in many oil storage tanks being prepared for cleaning, repair or decommissioning.
The 1.4 MMbtu steam boilers are ideal for projects where there are weight restrictions or where space is at a premium. These units include internal fuel and water tanks, with methane / propane and H₂S gas detection systems fitted as standard.
Booster compressors and trained operators are hired by specialist contractors for product transfer operations, including transferring product from one pipeline to another to allow for repairs and maintenance.
Booster compressors can also be used to transfer residual product, generally gas, from one pipeline system to another, enabling maintenance to be carried out safely on the empty pipeline.
Modifications have been carried out to booster compressors to meet gas site safety requirements. These include the installation of gas detection systems, conversion to air start, and the addition of anti-static blades and belts, amongst other modifications.
Compressed air equipment spreads are supplied and operated for cuttings transportation and containment operations.
Compressed air is used to pneumatically move drill cuttings contaminated with oil based mud through enclosed systems and into silos for transportation to shore.
Significant investment has been made in compressed air spreads to support cuttings transportation and containment, with equipment successfully supplied and operated for projects in the North Sea and internationally for leading companies in the cuttings transport and containment sector.
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