Abstract: A containment valve assembly using the upcoming pressures to control the flow of oil/gas through a riser pipe with a stop flow plug positioned within the valve housing that has an outer surface shaped to fit within and against the riser pipe, and an inner socket cavity having a conical nose receiver portion with a relief vent allowing the oil/gas to escape through the valve assembly, when desired. The stop flow plug is shaped to fit within the inner socket cavity and moves between an open position and a closed position, wherein the stop flow plug fits securely against the conical nose receiver portion, sealing the relief vent. At the top of the valve, a nut will lock the stop flow plug to the close out plate for additional stoppage. A second embodiment adds a heavy duty insert to supplement the sealing pressure, when needed. Electronic monitors convey data remotely.

Abstract: A containment valve assembly using the upcoming pressures to control the flow of oil/gas through a riser pipe with a stop flow plug positioned within the valve housing that has an outer surface shaped to fit within and against the riser pipe, and an inner socket cavity having a conical nose receiver portion with a relief vent allowing the oil/gas to escape through the valve assembly, when desired. The stop flow plug is shaped to fit within the inner socket cavity and moves between an open position and a closed position, wherein the stop flow plug fits securely against the conical nose receiver portion, sealing the relief vent. At the top of the valve, a nut will lock the stop flow plug to the close out plate for additional stoppage. A second embodiment adds a heavy duty insert to supplement the sealing pressure, when needed. Electronic monitors convey data remotely.

Abstract: A riser pipe containment valve attached to the drill string tool that uses the wells' intense pressure to cap and control flow when lowered down the riser and attached to its internal wall. Oil/gas sealing and stoppage flow through the valve are controlled by stop flow plug movement. The valve attached then to the riser pipe wall is locked to that surface with pressure indented balls forced into wall indented cavities locking valve to riser in multiple engagement points. When the valve is installed as a riser pipe insert, and used as a by-pass stop flow pipe, without retention attachments, it continues to function as an oil/gas stop flow plug system, and electronic sensors in the valve are utilized to monitor flow and sealing conditions relative to high pressure and convey data to the drill string tool and its electronic system display.