What is the core structure and composition of a continuous tubing blowout preventer? What is the working principle?

Core Structure and Composition

Fully sealed gate: fully sealed wellhead when there is no oil pipe in the well;

O Shear gate: urgently cut off the oil pipe and seal the well;

Kava gate: suspend the oil pipe and reduce damage to the pipe wall (replaceable tooth design);

Half sealed gate: Seal the annular pressure during oil pipe operation.

Working principle

Drive the hydraulic cylinder to compress the elastic element through the hydraulic system, forming a seal between the outer wall of the oil pipe and the wellhead;

When the gate is closed, use well pressure to assist in sealing and improve reliability.