| 摘要 |
A ball injecting apparatus for releasing balls into a well comprises a housing adapted to be supported by a wellhead structure, the housing having an axial bore therethrough, said axial bore being in fluid communication and aligned with the wellbore, at least one ball housing having a radial bore extending away from the axial bore, a ball ram block movable along the radial bore and having a plurality of chambers, each for storing a ball therein or for releasing a ball therefrom, an actuator for moving the ball ram block along the radial bore and an external port on the ball housing for providing access to the ball ram block and the plurality of chambers.
|
