Patent ID: 9695657
Date: 2017-07-04
CPC Classifications: E21B

Claim:
1. A downhole latch assembly for a completion system, comprising: an upper completion mandrel having an external shoulder; a lower completion receptacle having an interior shoulder that engages the external shoulder of the mandrel; a latch assembly positioned along the mandrel to secure the external shoulder of the mandrel adjacent the interior shoulder of the receptacle; a lock ring concentrically disposed about an exterior surface of the mandrel; a collet support concentrically disposed about an exterior surface of the lock ring and about an exterior surface of the mandrel; and a collet concentrically disposed about an exterior surface of the collet support; wherein the receptacle and the collet form a first latch, the collet and the collet support form a second latch, the collet support and the lock ring form a third latch, and the lock ring and the mandrel form a fourth latch; wherein a first shearable mechanism couples the collet support to the collet and a second shearable mechanism couples the collet support to the mandrel; and wherein the first latch prevents upward movement of the collet relative to the receptacle, the second latch prevents downward movement of the collet support relative to the collet, the third latch prevents downward movement of the lock ring relative to the collet support, and the fourth latch prevents upward movement of the mandrel relative to the lock ring.