Saltel Xpandable ECP – External Casing Packer
Saltel Xpandable external casing packer is a robust expandable stainless-steel device designed to set at low pressure to achieve zonal isolation. Saltel external casing packer can be used for any stage cementing operation, or to prevent fluid migration in the annulus.
The ECP sleeve is expanded between the casing and borehole by applying pressure in the casing. This pressure is transmitted through the expansion port to the external casing packer’s integral stainless-steel sleeve. As the sleeve expands, it conforms to the shape of the wellbore. A patented thin layer of bonded elastomer ensures sealing in irregular boreholes. The expanded sleeve also serves to centralize the casing string.
The ECP is built on a one-piece mandrel by welding or crimping with no hidden connections. Both ends are fixed and protect the expandable sleeve while running in hole. The robust construction allows the ECP to be rotated and worked through doglegs and tight spots; full casing characteristics are maintained.
The expansion port features a one-way valve system that traps fluid inside the expanded sleeve to increase the differential pressure rating.
The expansion port features a valve system that permanently closes the port once the external casing packer is set and a predetermined pressure is reached. The activation pressure can be modified by replacing an easily accessible shear pin.
Valve safety feature
In both versions of the external casing packer, the expansion port also serves as a safety feature. If the external casing packer is expanded in front of a severe washout, the valve closes, preventing fluid loss.
Why chosing Saltel Xpandable ECP?
Xpandable ECP provides an effective steel barrier between the casing and borehole. It prevents fluid migration in the annulus, eliminates cross-flow during cementation, and eliminates gas migration during cement setting. The external casing packer seals in any hole shape and condition, including oval, out of gauge, and irregular boreholes – this does not include severe washouts. The external casing packer maintains casing rating by avoiding extra connections or casing internal diameter reduction. It saves rig time with fast installation, on-demand expansion, and immediate sealing. Then, the external casing packer minimizes non productive time with robust construction that withstands reciprocation and rotation to pass through doglegs and tight spots.
Deep offshore completions
Saltel Expandable Steel Packers meet the requirements of most challenging applications such as deep offshore completions. Saltel Xpandable Steel open hole Packers allow permanent annular isolation.
Sand screen isolation
Splitting long lengths of the annulus into shorter sections to improve flow control and prevent sand migration. Challenge Horizontal completions are becoming more extended and more sophisticated, often through different formations….
Once expanded against the borehole, Xpandable Steel Packers compartmentalize the annulus into independent parts Cement provides casing annulus seal between the reservoir, geological formations, and the surface during the life…
Allow cementing the annulus in two or more stages regardless of losses zones. Challenge Low-pressure formations, high permeability zones, and very long casing string can make cementing operation difficult with…
Primary cementing backup
Improve primary cementing, preventing gas or water channeling in cement Primary cement backup challenges Annulus cementing is essential as a primary well barrier to secure the environment, and ensure the…
Seal in the annulus and isolate troublesome loss zone section Challenge A single stage cementing operation can be requested to start cementing only above the loss zone, in case it is located at…