Work and operation of the preventer unit

The preventive installation is mounted under the base of the tower block. Depending on the conditions of the well wiring, the mouth can be equipped with a preventive device already when drilling a shaft under a casing with a diameter of 377 mm. This is how exploratory and sea wells were equipped in new areas. The installation and operation of preventive installations must be carried out in accordance with the safety rules in the oil and gas production industry. The preventer unit is pressurized with water at the pressure allowed by the casing (but not more than the test pressure of the unit) for 30 minutes.