Wellbore tool and method of use

A method of well construction, comprising:

• providing a tool having a lower body with an interior channel and an upper body configured to engage within the interior channel via a connection, the tool having a seal extending between the interior channel and the upper body;
• cementing a parent casing string at a predetermined depth within a wellbore;
• creating a drilled section below a lower end of the parent casing;
• running a production string with the tool into the wellbore such that the tool is positioned above a shoe of the parent casing;
• performing cementing operations through the production string;
• applying a first number of left-hand rotations to the upper body of the tool, thereby converting the tool to a circulation configuration;
• performing circulation operations to clean excess cement above the tool;
• applying a predetermined number of right-hand rotations to the upper body to convert the tool to a closed configuration for pumping operations;
• performing pumping operations;
• and
• applying a second number of left-hand rotations to the upper body to convert the tool to a released configuration, such that the upper body is released from the lower body by being completely disengaged with the connection;
• wherein the lower body remains attached to a liner within the wellbore.