Patent ID: 8276676
Filing Date: 2012-10-02
Classification: E21B

Abstract:
1. A method of operating a hybrid coiled tubing-jointed tubing downhole tool string having a fluid flowpath therethrough in a well, comprising the steps of: retracting the tool string to place the connection of the coiled tubing to the jointed tubing in a section of the well capable of being isolated, wherein the section of the well capable of being isolated is located between two blowout preventers or between two stripper packers; isolating the section of the well containing the coiled tubing-jointed tubing connection to allow for pressurization of the section, wherein isolating the section of the well containing the coiled tubing-jointed tubing connection is accomplished using the two blowout preventers or the two stripper packers; and sealing the fluid flowpath within the tubing string at the coiled tubing-jointed tubing connection, wherein sealing the fluid flowpath within the tubing string at the coiled tubing-jointed tubing connection comprises pumping fluid into the isolated section between the two blowout preventers or the two stripper packers; wherein the fluid flowpath is operable to be sealed by pressurizing the isolated section.