ERT (E-running tool) is designed to RIH the liner and release the work string after the liner is set. The tool consists of а left crossover, а hydraulic disconnector unit and а coupling. Disconnection is performed bу applying sufficient pressure inside the string, so the screws are sheared and the piston is moved upwards thus releasing the dogs form the profile.
HDS is designed to hold the Seal Assembly against the upward movement during multistage hydraulic fracturing. HDS is installed on the tubing above the Seal Assembly. HDS slips cut into the casing under the increased pressure, thus holding the Seal Assembly against the upward movements. HDS is deactivated by equalizing the pressure inside the tubing string and annulus by pulling the tubing string in tension.
Vertical, directional and horizontal wells.
The Formation lsolation Valve is used to isolate the inner diameter of tubing from above and below. The tool has multiple use, mainly for prevention of formation damage and well control during well completion and workovers. It has ball type valve with seals qualified for gas with up to 10,000 psi differential pressure from above and below. Formation lsolation Valve is operated remotely (by pressure cycles) for first open and mechanically for any required number of open/close operations. It is designed for multi-stage fracturing operations through the ID of the tool.
