Drill string fishing tools

Failure is often preceded by a gradual reduction in the mud pump pressure due to a hole in the drill string washout. If it is not spotted, it leads to failure of the thread or the pipe. Most drill string failure occurs:. As soon as the driller is sure of a drill string failure, he pulls out the upper pan of the drill string. He can then see the what the top of the fish looks like, its diameter and depth.

Junk Mills are used for milling rock bits, drill pipe, reamers, reamer blades, tool joints, bridge plugs, tubing squeeze tools, alloy-steel packers, and miscellaneous junk. The Taper Mill is used for milling out collapsed or split casing, whipstock windows and also mill through various types of restrictions and may also be used in conjunction with other mills to prepare a fish for internal engagement.

Tapered mills come in three common configurations. Special mill that has a heavy tubular extension below it called a pilot or stinger. The pilot, smaller in diameter than the mill, is designed to go inside drill pipe or tubing that is lost in the hole. It guides the mill to the top of the pipe and centers it, thus preventing the mill from bypassing the pipe. Also called a piloted mill. It is suited for milling liner hangers, eliminating inside cuts. It is also well suited for milling washpipe, safety joints, crossover swages, and wash over shoes.

Junk Sub is an accessory tool used in milling or drilling operations. It run just above the drill bit and have a cup for catching objects too heavy to be completely circulated out of the hole. Boot baskets Junk Sub are used directly above the mill or drill bit. On severe milling jobs, it is customary to run two or three baskets in tandem above the mill. This tandem running not only increases the capacity to remove the cuttings, but also provides extra stabilization for the mill.

Boot basket can be run in either open hole or inside casing. When the basket is working inside a casing, hard faced pads, dresses to the same O. Junk Subs are constructed from high quality steel, completely stress-relieved after cup and rib guides have been welded to the main body.

Rib guides prevent the cup from becoming crushed and help guide the tool through tight places upon withdrawal from the hole.

Rotary Taper Taps are simple, rugged, dependable internal catch fishing tools. Operation: Run the taper tap in the hole to the top of the stuck fish, apply less than one point of weight, and rotate the tap until the tapered threads have engaged the fish. Stop rotation and pull the fish from the hole. Plain Taper Taps do not have a skirt thread provided on the shoulder. Skirt Type Taper Taps are threaded for a skirt.

A skirt is used when the hole size is drastically different from the fish size. The taper tap can be dressed with a skirt or a skirt and oversize guide. This will allow for the taper tap to be guided into the fish more easily during the fishing operation. Basket Sub is often run in after using a Junk Mill to fish out bit rollers, ball bearings and teeth.

Our manufacturing process specifies us to cut a sharp profile thread into case hardened high alloy steel. We do this in house with our CNC machine shop. This guarantees it will bit into the broken tubular. It comes standard with a removable reaming bit which helps to stabilize it while down the hole. Our magnetic fishing tools pull over to bs in testing, but we can design them to pull even more. Our fishing tools have open holes designed to allow the face of the tool to be flushed.

This allows for good hole cleaning and helps insure random debris does not become magnetised and junk up the face of the tool. Jars are included in drilling assemblies for sidetracking. On Sale. Fishing Tools.