Rupture disc assembly

A rupture disc assembly for use in a vessel, the rupture disc assembly comprising:

• a rupture disc comprising a pressure facing surface, a bottom surface, and a side surface having a taper inward towards the bottom surface of the rupture disc;
• an actuating mechanism configured to support the rupture disc and operable to be activated when the pressure facing surface of the rupture disc is subjected to a disc failure trigger pressure, the actuating mechanism comprising:
• i) an outer sled operable to move in a downhole direction from a first position to a second position after activation of the actuating mechanism, the outer sled comprising an inner supporting surface having an inward taper complementary to and abutting the taper of the side surface of the rupture disc to permit transmission of radial compressive forces from the outer sled to the rupture disc and a bottom surface;
• ii) an inner sled disposed within the outer sled and operable to move in a downhole direction from a first position to a second position after activation of the actuating mechanism, the inner sled comprising a cylindrical inner surface, a support shoulder configured to abut with at least a segment of the bottom surface of the rupture disc and a bottom surface downhole from the bottom surface of the outer sled;
• iii) a securing mechanism operable to secure the outer sled and inner sled in their first positions and release the outer sled and inner sled after activation of the actuating mechanism;
• wherein the rupture disc is operable to form a temporary seal within the rupture disc assembly when the outer sled and inner sled are in their first positions and, after activation of the actuating mechanism, to break after the inner sled reaches its second position.

A rupture disc assembly for use in a vessel, the rupture disc assembly comprising:

• a rupture disc comprising a pressure facing surface, a bottom surface, and a side surface having a taper inward towards the bottom surface of the rupture disc;
• an actuating mechanism configured to support the rupture disc and operable to be activated when the pressure facing surface of the rupture disc is subjected to a disc failure trigger pressure, the actuating mechanism comprising:
• an outer sled operable to move in a downhole direction from a first position to a second position after activation of the actuating mechanism, the outer sled comprising an inner supporting surface having an inward taper complementary to and abutting the taper of the side surface of the rupture disc to permit transmission of radial compressive forces from the outer sled to the rupture disc and a bottom surface;
• an inner sled disposed within the outer sled and operable to remain stationary in a first position after activation of the actuating mechanism, the inner sled comprising a cylindrical inner surface, a support shoulder configured to abut with at least a segment of the bottom surface of the rupture disc and a bottom surface downhole from the bottom surface of the outer sled;
• a securing mechanism operable to secure the outer sled and inner sled in their first positions and release the outer sled and inner sled after activation of the actuating mechanism;
• wherein the rupture disc is operable to form a temporary seal within the rupture disc assembly when the outer sled and inner sled are in their first positions and, after activation of the actuating mechanism, to break after the outer sled reaches its second position.