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A major customer in Thailand had contracted Baker Hughes, a GE company (BHGE), to deploy the Thailand Wellbore Intervention team in over 800 plug-setting and casing cuts on this shallow-well plug and abandonment campaign. Traditionally, these conventional operations required two trips. The customer tripped into the hole to set a plug, flow cement, and then made an extra run to cut a casing string. Alternatively, an operator could run a tool into the wellbore, mechanically set a plug, cut the casing, but would no longer have the option to set cement. Naturally, with two runs needed, a customer incurred all the associated costs in rig time costs and health, safety and environmental (HSE) handling risks.

In an effort to discover a more efficient method of completing plug-andabandonment work, the Perseus™ pump-through cutter was introduced in a consecutive 10-well abandonment project. Hydraulically operated and designed to cut a single string of casing on command, the PERSEUS cutter is ideal for plug and abandonment or slot recovery operations. The knives are dressed with METAL MUNCHER™ Advanced Milling Technology (AMT) that provides the industry’s most durable, effective cutting and swarf control tungsten-carbide to cut or mill even the toughest steels.

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Challenges & Results


  • Reduce overall costs associated with plug and abandonment applications


  • Saved customer one trip during P&A operations by combining plug setting and cementing with the casing cutting run
  • Decreased HSE handling exposure by reducing the need for an additional trip
  • With rig rates approximately $10,000 USD/hour, each trip eliminated, saved an estimated $7,500 even at these shallow working depths