Model-FJZ-C-Hydraulic-Opening-Stage-Collar

Features

1.    The circulation ports can be hydraulically opened,eliminating the need to use a free-fall opening plug.Therefore,it is not restricted to well inclination.

2.    Internal closing structure and anti-rotation mechanism protect the closing sleeve from damage while drilling out the opening and closing seats.

3.    All internal parts are made of easily drillable material.

4.    Opening pressure adjustable upon customer request.

Property Parameters