Patent ID: 8757205
Filing Date: 2014-06-24
Classification: E21B,F16K,Y10T

Abstract:
1. A choke assembly tensioner system for use with a tensioning system of a drilling rig, the choke assembly tensioner system comprising: a. a choke spool housing with a tank fluid port, a spool retainer port, and an actuator opening with a rotation limiting keyway; b. a choke spool disposed within the choke spool housing, the choke spool comprising: c. an actuator coupling with a face and a back, a rotation limiting key on the face, and a shaft hub extending from the back, wherein the rotation limiting key engages the rotation limiting keyway and the shaft hub engages the choke spool, and wherein the choke assembly tensioner system connects to an actuator system engaging the actuator coupling to operate at a horsepower from 2 horsepower and 500 horsepower, wherein the actuator system connects to the choke spool rotating the rotatable inner spool to open and close alignment of the plurality of rotatable inner spool bidirectional flow holes relative to the plurality of outer spool bidirectional flow holes allowing hydraulic fluid to flow bidirectionally into and out of the choke spool housing and the choke spool to throttle a tensioner on the drilling rig to control a riser recoil event.