Workover Tool String

Abstract: The present invention relates to a workover tool string (1) for cutting into a production tubing (2) of a well completion (100) having a top (3), the well completion comprising a casing (4) into which the production tubing is arranged and a production packer (5) arranged between the casing and the production tubing defining an annulus (6) above the production packer, the workover tool string comprising: a longitudinal axis (7), a first tool string end (8) and a second tool string end (9), the first tool string end being arranged closer to the top when submerged into the well completion, a tubing cutting unit (10) comprising a body (11) and a cutting edge (12) configured to be rotated around the longitudinal axis while being projected in relation to the body for cutting into a wall (14) of the production tubing from within in order to separate a first part (15) of the production tubing closest to the top from a second part (16) of the production tubing, wherein the workover tool string further comprises a tubing penetration unit (20) comprising a projectable penetration element (21) configured to create at least one hole (22) in the wall of the first part for creating a fluid communication between the annulus (6) and an inside (23) of the production tubing in order to obtain well control by circulating fluid there between, the penetration unit being arranged closer to the first tool string end than the tubing cutting unit. The present invention further relates to a downhole system and to a repairing method.

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