PARVEEN Junk Subs capture and trap junk that is too heavy to circulate. They are designed to be used in the drill collar string juat above the rock bit or milling tool. The tool consists of a steel mandrel with an oversized sleeve or "skirt" attached over the mandrel. The "skirt" will trap the large cutting and junk which are too heavy to be circulated out of the hole. The "skirt" is manufactured with bleed holes to allow the mud to drain once it is brought out of the hole. It is recommended that two Junk Subs be run in tandem to decrease the possibility of junk bypassing a single Junk Sub. The Junk Subs do not have welding on its body.

PARVEEN Junk Subs are used directly above the Mill or drilling bit for easy removal of cuttings. In hard milling jobs, two or three junk subs are run one after the other. This increases capacity to remove cuttings & provides additional stabilizati-on to mill. Parveen's Junk Subs can be run in both open hole & cased hole.