The ND-J type internal cutter is a down-hole mechanical cutting tool designed to cut casings, tubings and drill pipes. The main advantages are its simple structure, reliable performance and high cutting efficiency. In order not to cut the casing and tubing couplings, the cutter shall be kept away from these couplings during operation. Depending on drilling conditions, it can be used in conjunction with coupling locator to locate the position of the nearest coupling from the cutter. When the internal cutter is used with the releasing spear, it can cut and remove the cut tubing in one fishing operation. Alternatively, a separate fishing tool can be used to remove cut pieces.

TIANHE provides all kinds of WASHOVER PIPE ACCESSORIES

Washover pipe is a special tool commonly used to release stuck section of drill string in the well bore. TIANHE offers a complete range of washover pipe for the industry. TIANHE provides a unique FJWP thread that adopts a two-step double shoulder threaded connection which assures quick make up and high torsional strength.

Junk Sub (Fishing Cup) is normally used to catch and remove junks that are too heavy to be circulated preventing them from settling at the bottom of the well-bore. Typical junks are shivers and fallen objects such as carbide tooth, drill bit and bearings which are too heavy to be removed from the well- hole through conventional fluid circulation. Junk Sub’s main function is to keep well bottom clean to increase bit service life, reduce and prevent drill bit from unexpected damage.

TIANHE produces all kinds of Junk Mills with beautiful appearance and superior performance