Patent ID: 9010412
Filing Date: 2015-04-21
Classification: E21B,Y10T

Abstract:
1. A ball drop wellhead control apparatus, comprising: a control body having a central passage; a ball controller housed by the control body and obstructing the central passage, the ball controller having a ball pocket that is aligned with the central passage of the control body when the ball controller is in the ball receiving position, at least one through bore in a bottom of the ball pocket that provides fluid communication through the ball controller when the ball controller is in a ball receiving position, and a ball release port through which a frac ball is released from the ball pocket when the ball controller is in a ball release position, the ball release port being oriented at a right angle with respect to the ball pocket, the ball controller inhibiting any frac ball dropped from a frac ball drop or a frac ball injector connected directly or indirectly to the control body from being released from the central passage until the ball controller is moved to the ball release position; and an actuator that moves the ball controller from the ball receiving position to the ball release position.