ELECTROMECHANICAL SHIFTING TOOL

摘要

Disclosed are shifting tools for opening and closing shifting sleeves. A disclosed completion system includes a completion string having a shifting sleeve movably arranged therein, a service tool configured to be arranged at least partially within the completion string and including a shifting tool having one or more shifting keys configured to mate with the shifting profile. When the shifting keys locate and mate with the shifting profile, an axial load applied on the service tool axially moves the shifting sleeve. If the shifting key is misaligned with a complementary shape of the shifting sleeve, a lower detent housing retracts toward an upper detent housing against a force of a detent spring to allow the shifting keys to retract while maintaining a radially outward force. If an axial load is removed, the housings are automatically retracted by a return spring, causing the shifting keys to disengage.

主权项

1. A shifting tool, comprising:
at least one shifting key; a lower detent housing operatively connected to the at least one shifting key such that advancement of the lower detent housing along a shifting rod advances the at least one shifting key radially away from the shifting rod; an upper detent housing slidingly coupled to the lower detent housing by at least one detent arm fixed to the upper detent housing and axially moveable through the lower detent housing between an advanced position and a retracted position, and wherein the at least one detent arm comprises an upper portion fixed to the upper detent housing, a narrow portion extending through the lower detent housing, and an end portion; a detent spring biased to urge the lower detent housing away from the upper detent housing; and a return spring biased to urge the upper detent housing along the shifting rod in a direction that allows retraction of the at least one shifting key toward the shifting rod.