AO Link Jar (Threaded)

The Rebco AO Link Jar is the main working tool of the wireline tool string. It consists of two interlocking alloy steel links, similar in design to elongated chain links, that are free to telescope open (extend) or collapse when the wireline at the surface is manipulated. When the operator pulls up on the wireline, the links extend rapidly until the upper link shoulder contacts the lower link shoulder, delivering a sharp upward impact blow to everything below. When the operator releases tension and allows the string to drop, the links collapse, and the fishing neck strikes downward, delivering a downward impact blow. The intensity of the jarring impact is directly proportional to the weight of the stem installed above the jars, the selected stroke length, and wellbore conditions such as fluid viscosity and deviation. Upward jarring is generally more powerful than downward jarring because line speed can be increased by spooling faster at the surface unit, while downward jarring is limited to the speed of free gravity fall. Available in 20" or 30" stroke lengths, in standard threaded connections, ¾"–2½" OD.

AD Link Jar (RQLD)

The Rebco AD Link Jar is the RQLD double-shoulder quick-lock version of the Rebco AO Link Jar, providing all the same upward and downward jarring capability with the speed and safety of Rebco's Quick Lock System. The double-shoulder design distributes jarring impact loads across multiple contact surfaces, providing superior strength under high cyclic impact loads compared to single-shoulder connections. Available in RQLD connections, 1¼"–2½" OD.

AS Link Jar (RQLS)

The Rebco AS Link Jar is the RQLS single-shoulder quick-lock version of the Rebco AO Link Jar, designed for lighter-duty applications where the full double-shoulder heavy-duty connection is not required. Available in RQLS connections, 1¼"–1½" OD.