Pipe cutting tool

A method of cutting a pipe comprising:

• i) lowering a generally cylindrical-shaped abrasive fluid-operated pipe-cutting tool having a first upper end and a lower end to a target location within the pipe;
• said tool comprising:
• a pump down ring, wherein an outermost diameter of said ring is larger than that of any other component of said tool when the tool is in dry state;
• a swellable sleeve, upstream from said pump down ring, surrounding at least a portion of an outer surface of said tool, said sleeve being capable of expanding when exposed to a first oil or water-based fluid;
• and
• a fluid flow path having, at the first upper end of the tool, an entrance for pressurized abrasive fluid to flow into the tool, and multiple fluid ejection nozzles downstream of said swellable sleeve, and said multiple fluid ejection nozzles for ejection of inflowing pressurized abrasive fluid from the fluid flow path in the form of pressurized abrasive fluid jets;
• one or more flow channels connecting a portion of the outer surface of the tool downstream the pump-down ring with the lower end of the tool;
• ii) exposing said sleeve to said first oil or water-based fluid for a period sufficient to cause said sleeve to expand and seal any fluid flow bypassing the tool and thereby stopping any fluid flow to the pump-down ring from the first end;
• iii) pumping pressurized abrasive fluid into the entrance of said fluid flow path and causing ejection of pressurized abrasive fluid jets from said nozzles;
• and
• iv) cutting said pipe at the target location through the ejected pressurized abrasive fluid jets.