Patent ID: 8683848

Claim:
An improved system for performing hydrostatic testing of oilfield tubulars as the tubulars are installed in a well, the system of the type having a tool assembly comprising a mandrel having an interior conduit and an exterior, at least two axially spaced elastomeric cups mounted on the exterior, the system further comprising a test head attached to the tool assembly, the test head hydraulically connected to the interior conduit, fluid introduction and pressurization means hydraulically connected to the test head, a fluid discharge means from the interior conduit to the exterior, the fluid discharge means disposed between the elastomeric cups wherein the elastomeric cups are adapted to expand into the internal wall of the tubulars, the improvement comprising: a safety stop disposed between the test head and the tool assembly, the safety stop comprising a generally cylindrical body having a bore extending through its length, the cylindrical body comprising a downward facing pin and an axially-aligned upward facing box end, wherein the downward facing pin is sized to mate with an upward facing box of the tubulars, wherein the bore comprises a diameter smaller than the outside diameter of a portion of the tool assembly.