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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
Applications
Other HETS Expandable Products
