• Safelift™ technology uniquely enables a zero leak rate DHASV.

• Can accommodate 8 x 0.25 chemical injection / control lines .

• Can be easily and reliably retrived.

• Can be reliably set while cold and are unaffected by subsequent thermal cycling.

The retrievable packer is run as an integral part of the completion string and is hydraulically set and released by cutting the primary mandrel. To set the packer, hydraulic pressure is applied to the tubing via a port into the piston chamber. The hydraulic pressure compresses the seal elements and slips against the casing wall, creating a seal and locking the tubing and packer to the casing. The lockring prevents the setting force from releasing after the setting pressure is bled off.

During setting there is no movement of the packer relative to the casing string. To release the packer a dedicated cutting tool deployed on tubing or wireline cuts the packer mandrel directly below the retainer ring. The lower tubing pulls the bottom sub downwards until it contacts the retainer ring releasing the compression on the seal element and slips. Picking up string weight the slips fully retract and the packer is pulled from the well.

The packer mandrel is machined from a single steel bar. There is no potential leak path from the tubing bore to the annulus via the mandrel below the seal element. The packer mandrel can be drilled to accept bypass for up to eight 0.25" control lines.