Zonal Isolation Barrier HETS-ZIB™

Steel zonal isolation packer - compliant, durable, efficient.

The HETS Zonal Isolation Barrier (ZIB) provides an inflatable permanent metal barrier to annular flow in either open hole or within tubing / casing. The ZIB is manufactured from either 316 stainless steel or in high-chrome nickel alloy (Sanicro-28), and expanded up to 40% on diameter. The ZIB is inflated with the HETS tool or by pressuring up the well (if the liner has sufficient burst strength).

High zonal isolation is achieved through contact pressure with the formation or tubing / casing, determined by the final inflation pressure and formation compressive strength. The goal is to achieve maximum formation contact pressure below the formation fracture pressure.

Given the high contact force with the formation, there is no movement of the ZIB in relation to the formation due to thermal expansion / contraction forces with the liner / casing when switching between production / injection.

The ZIB can be deployed and inflated immediately, or if used as a contingency, inflated when required at any time in the future.

Key Features

Metal expandable sleeve provides long term resistance to flow.
Zonal isolation up to 4,000 psi (hydrostatic well pressure or well on production).
Zonal isolation up to 10,000 psi (during injection or fracture / stimulation operations).
ISO 14310 qualification.
Large expansion ratio (up to 40%) on diameter with minimal increase on liner / casing. O.D. during deployment.
Expansion as and when required, immediate or after several years.
Re-expansion at a future date is possible if the formation is washed out and cross-flow is seen.
High anchor force to formation, can withstand temperature associated tubular movement.
Metal barrier not degraded by produced fluids.
Contact force maintained in gas production / injection environments.
Optional high chrome construction.