Wireline Retrievable Opening Prong

A subsurface safety valve system, comprising:

• a tubular valve housing disposable within a wellbore, the valve housing having a lower key slot;
• a primary flow tube axially moveable within the valve housing between an upper position and a lower position, the primary flow tube having an upper key slot formed in a radially inner surface of the primary flow tube;
• a secondary valve securable within the valve housing downhole from the primary flow tube and a primary valve, wherein the secondary valve comprises a lower key assembly having a lower key configured to expand into the corresponding lower key slot formed in the valve housing to secure the secondary valve to the valve housing;
• a secondary valve seat connected to a downhole end of the lower key assembly;
• a secondary flapper secured to the secondary valve seat, wherein the secondary flapper is actuatable between an open position and a closed position;
• an upper key assembly comprising an upper key, wherein the upper key is expandable into the upper key slot to secure the upper key assembly to the primary flow tube;
• and
• a tubular opening prong secured to a downhole end of the upper key assembly, wherein the opening prong is moveable axially downhole to drive the secondary flapper into the open position in response to the primary flow tube moving to the lower position, and wherein the opening prong is moveable axially uphole to release the secondary flapper to move into the closed position.