system for pressure control in an annular space in a borehole during gravel buffer operations, method for reducing pressure from well bore during gravel buffer operations, system for pressure control in an annular space of a borehole well during a gravel buffer operation, and method for reducing pressure in a well hole during gravel buffer operations

摘要

PRESSURE CONTROL SYSTEM IN A DIRTY SPACE HOLE DURING OPERATIONS, SPRAY BUFFER PRESSURE METHODS DURING A SPOKE PRESSURE CONTROL SYSTEM WELL DURING A SHELL BUFFER OPERATION, AND PRESSURE REDUCTION METHOD IN A WELL HOLE DURING BUFFER OPERATIONS. A technique is provided to facilitate gravel plugging operations in a well. A duct surrounded by a screen is installed in an insulated lower region of the wellbore. The conduit cooperates with one or more valves that can be selectively opened to relieve well bore pressure resulting from beta wave advancement during the gravel plug procedure. A control system allows reliable and timely opening of one or more valves to relieve wellbore pressure and protect the surrounding formation.