초록 ▼

A setting tool of the type adapted to be made up in a pipe string for releasably engaging a setting sleeve in a well bore is shown which has a mandrel having an upper end adapted to be connected in the pipe string and having a lower end. A setting nut carried on the mandrel has external connecting t

A setting tool of the type adapted to be made up in a pipe string for releasably engaging a setting sleeve in a well bore is shown which has a mandrel having an upper end adapted to be connected in the pipe string and having a lower end. A setting nut carried on the mandrel has external connecting threads for engaging mating connecting threads located on the interior of a setting sleeve disposed about the lower end of the mandrel. The mandrel is slidably disposed within the setting means when the setting means is engaging the setting sleeve. The mandrel is slidable between an extended running-in position and a weight-set down position. Dogs are provided in the setting nut for engaging a radial groove in the setting sleeve when the mandrel is in the running-in position to prevent relative movement between the setting nut and the setting sleeve which would disengage the tool. Setting weight down on the tool causes an undercut area on the mandrel to underlie the dogs in the setting nut thereby allowing the dogs to be disengaged from the setting sleeve groove which in turn allows relative movement between the setting nut connecting threads and the connecting threads of the setting sleeve to disengage the tool. The setting nut connecting threads can be right hand release threads, whereby the setting tool is releasable from the setting sleeve by right hand rotation of the mandrel when the mandrel is in the weight set-down position.

대표청구항 ▼

A setting tool of the type adapted to be made up in a pipe string for releasably engaging a setting sleeve in a well bore, comprising: a mandrel having an upper end adapted to be connected in the pipe stirng, a lower end, and an intermediate supporting shoulder formed on the exterior of said mandrel

A setting tool of the type adapted to be made up in a pipe string for releasably engaging a setting sleeve in a well bore, comprising: a mandrel having an upper end adapted to be connected in the pipe stirng, a lower end, and an intermediate supporting shoulder formed on the exterior of said mandrel; a generally cylindrical setting nut carried on said mandrel, said nut having external connecting threads for engaging mating internal connecting theads on the interior of a setting sleeve disposed about the lower end of said mandrel and said setting nut having at least one axial groove in the interior thereof: said mandrel being slidably disposed within said setting nut when said nut is engaging said setting sleeve, said mandrel being slidable between an extended runnin-in position and a weight set-down position wherein said supporting shoulder contacts said setting sleeve; said setting nut having at least one opening in a sidewall thereof for receiving a dog and wherein said setting sleeve interior has a radial groove adapted to engage said dog for preventing relative movement between said connecting threads of said setting nut and said setting sleeve when said mandrel is in said extended running-in position and allowing relative movement between said connecting threads when said mandrel is in said weight set-down position; and at least one torque transmitting spline on said mandrel exterior adapted to be received within said setting nut axial groove whereby torque transmitted to said mandrel is transmitted to said setting nut.