Subsurface flow control pulling tools

Designed for use during wireline operations

Otis® GS  and GR pulling tools are used during wireline operations to unlock and pull a variety of subsurface controls with internal fishing necks, including Otis G pack-off assembly, Otis D bridge plugs, Otis X® and R® lock mandrels, Otis D mandrels, and Otis D collar stops. 

The Otis GS pulling tool is designed to shear with a jarring down action, and is used when excessive jarring upward is necessary to retrieve subsurface flow controls.  In the running position, the dogs are designed to seat and lock in the internal recess of the mandrel being retrieved. The Otis GR pulling tool is designed to shear with a jarring up action and is used during routine wireline operations on controls when shear-down is not possible. The Otis GR pulling tool is assembled by incorporating an Otis GS pulling tool with an Otis GU shear-up adapter.

External Fishing Necks

The Otis S and R pulling tools are designed to engage external fishing necks on subsurface devices within the wellbore. These pulling tools consist of a cylinder complete with top sub, inner core, and spring-loaded dog set. After the Otis S pulling tool is engaged on an external fishing neck, downward jarring action shears a pin to release the spring-loaded dogs and enable tool retrieval.. Once the Otis R pulling tool is engaged on an external fishing neck, an upward jarring action shears a pin to release the spring-loaded dogs and enables tool retrieval. When used as a running tool, the core must be long enough to allow upward travel after shearing the pin before the skirt is stopped by the equipment being run. This action permits complete release of the running tool.