Alloy Steel Workover Rig Components For Extreme Oilfield Service

Downhole Workover Special Tool Assembly (Core Process Components for Major Workover)

This is the exclusive core component system that distinguishes workover from drilling, specifically for handling downhole failures.

1. Fishing Tools

Tapered taps (pin taps), die collars (box taps), retrievable spear, releasing spear (back-off spear), basket-type junk basket, window-type overshot, magnetic fishing tool, and grab-type fishing tools — specifically for fishing downhole fish such as dropped tubing, dropped sucker rods, dropped pumps, debris, dropped instruments, and dropped wireline.

2. Milling Tools

Flat-bottom mills, concave (dish) mills, cylindrical mills, washover (cutting) pipe, and milling cones — used to mill up fish, dress fish tops, mill through deformed casing, and remove downhole scale, plugs, and debris.

3. Jarring and Stuck-Pipe Release Tools

Upset (up) jars, down jars, super jars, and accelerators — aimed at stuck drill strings, stuck tubing, and stuck fish, using up-and-down jarring to release them. They are the core tools for stuck-pipe release in workover.

4. Packer and Water Shut-Off Tools

Y211, Y341, and K344 series packers, bridge plugs, water distributors, and throttles (chokes) — used for zonal water shut-off, zonal water injection, zonal production, and zonal isolation and plugging operations.

5. Sand Washing and Well Flushing Tools

Washover shoes (sand-wash jets), sand-wash tubing, diverters, and screens — used for wellbore sand washing, settled-sand removal, and wellbore clearing.