Patent ID: 9598912
Date: 2017-03-21
CPC Classifications: E21B

Claim:
1. An apparatus for riser joint connection, comprising: a central coupler defining: a first riser joint having a lower end inserted into the upper inner sloped surface of the central coupler; a first collar stopper threaded around the lower end of the first riser joint; a first upper C-ring and a first lower C-ring; a first reaction collar fitted around the first riser joint, the first reaction collar defining: a first collar cap threaded around the first upper externally threaded section of the first reaction collar; a second riser joint having an upper end inserted into the lower inner sloped surface of the central coupler; a second collar stopper threaded around the upper end of the second riser joint; a second upper C-ring and a second lower C-ring; a second reaction collar fitted around the second riser joint, the second reaction collar defining: a second collar cap threaded around the second lower externally threaded section of the second reaction collar.