Well barrier and release device for use in drilling operations

A well barrier and disconnect device for use during drilling operations in wellbore environments, the well barrier and disconnect device comprising:

• a bottom hole assembly and a valve coupled to a first end of a liner hanger, the liner hanger having a second end coupled with a liner hanger running tool and a drilling tubular section;
• and
• a control mechanism to set the liner hanger into a wellbore casing and disconnect the liner hanger running tool from the liner hanger, the valve, and the bottom hole assembly,
• wherein the valve comprises a flapper seat biased in the closed position by a spring, and
• wherein the flapper seat is held in the open position by an extension of the liner hanger running tool and moveable in response to retrieval of the liner hanger running tool.

A method of using a well barrier and disconnect system during drilling operations in wellbore environments, the method comprising:

• using a liner hanger;
• a valve;
• and a drilling assembly coupled to a liner hanger running tool during drilling operations;
• and
• performing in response to an indication that a wellbore environment is on uncontrollable losses or in the event of a well control issue:
• setting the liner hanger into a downhole well casing;
• closing the valve that is connected below the liner hanger;
• and
• disconnecting the liner hanger running tool from the liner hanger, valve, and drilling assembly.