Gooseneck connector system

A gooseneck conduit assembly for a riser string, comprising:

• a first conduit comprising a gooseneck conduit comprising a vertically-extending portion, an upset formed on the vertically-extending portion, an alignment key extending laterally from the vertically-extending portion, and a lower coupling at a lower end of the vertically-extending portion;
• a second conduit configured to connect to an auxiliary fluid line connected to and extending along a riser string that extends to a subsea wellhead, the second conduit including a receiving end configured to form a connection with the lower coupling;
• and
• a frame configured to be connected to the riser string, wherein the frame comprises:
• a lower bracket to which the second conduit is secured;
• an upper bracket that is vertically offset from the lower bracket and defines an opening therethrough that is configured to laterally receive the vertically-extending portion of the gooseneck conduit, wherein the upper bracket is configured to engage a lower engaging surface of the upset;
• an alignment groove configured to slidably receive the alignment key so as to maintain a coaxial alignment between the vertically-extending portion of the gooseneck conduit and the second conduit;
• and
• a locking member pivotally coupled to the upper bracket, wherein the locking member is pivotal between an open position that permits the opening to laterally receive the vertically-extending portion, and a closed position in which the locking member prevents lateral movement of the vertically-extending portion of the gooseneck conduit with respect to the frame, and engages the upset so as to prevent upward movement of the gooseneck conduit with respect to the second conduit, such that a connection between the lower coupling of the gooseneck conduit and the receiving end of the second conduit is maintained without forming a threaded connection therebetween.