Open Hole Packer Technology
The development of expandable steel open hole packer has opened new horizons. The basic concept of attaching an expandable steel sheath to the outside of the casing by welding (cost-effective) or crimping (high anchoring and pressure ratings without impacting the base casing characteristics) opens up a wide range of products and applications, including:
- It is possible to improve primary cementing by running an efficient steel packer with the casing string. Also, expanding it into the cement to stop gas migration, prevent crossflow, centralize the casing, and ensure an efficient cementing process.
- Zonal Isolation, between screens, slotted pipe, ICDs,… A steel packer will make an efficient annular seal in a short zone, avoiding the need for cement and allowing optimized production from selected zones
- Efficient stage cementing by providing a high-strength steel packer below a DV tool for correct cement placement
- Openhole Ball-drop multistage fracturing operations, offering annulus well barriers with high-pressure sealing properties
Open Hole Packers Activation procedure
Saltel open hole packer are slid onto the completion casing and sealed through welding or crimping. In the completion casing, hydraulic pressure expands the metallic sleeves through an inflation port until they contact the formation or casing. The stainless steel sleeves’ plastic deformation creates a solid and permanent annulus seal. Robust to run and set quickly, with a high-pressure life of well seal, this is the ideal solution for annular zonal isolation.
Saltel Packers’ reliable sealing
An elastomer known as Hydrogenated Nitrile Butadiene Rubber (HNBR) seals Saltel open hole packer. HNBR is a high-performance synthetic rubber that offers excellent mechanical properties. Such as excellent heat and oil resistance, excellent abrasion and tear resistance, and excellent ozone and weather resistance. We can mount dynamic seal between steel rings, to enhance the sealing capacity further and expand the temperature range of the packers. Packers have end fittings that help protect the expandable sleeve while running in the well. These end fittings are designed to ensure that the sleeve is not damaged during installation and operation. Additionally, the end fittings also provide a means of connecting the packers to other components in the well.