DO Tubular Jar (Threaded)

The Rebco DO Tubular Jar consists of a perforated outer tube for fluid bypass and an inner telescoping mandrel connected to the fishing neck at the top. The mandrel extends or collapses within the tube by manipulating the wireline at the surface, producing upward or downward jarring action. The perforated tube design allows wellbore fluid to bypass freely as the mandrel travels, reducing the fluid resistance that can dampen jar action in debris-laden or contaminated wellbores, making the tubular jar especially effective in large tubing and casing environments, and in wells where debris or foreign matter in the fluid column would stall a link-type jar. The impact intensity is proportional to stem weight and stroke length. Available with various stroke lengths and optional double fishing neck, in standard threaded connections, ½"–2½" OD.

DD Tubular Jar (RQLD)

The Rebco DD Tubular Jar is the RQLD quick-lock version of the Rebco DO, combining the same fluid-bypass tubular construction with Rebco's double-shoulder quick-lock connection for faster assembly. Available in RQLD connections, ½"–2½" OD.