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 of the well. Therefore, any issue encountered during the placement, curing, or after several years can lead to significant safety and environmental issues.
Saltel Xpandable Steel Packers are set in the uncured cement sheath. Once expanded against the borehole, they compartmentalize the annulus into independent parts, preventing channeling and micro-annulus from spreading between them the curing phase.
As reliable and permanent expanded metal packers, they also guarantee long term annulus and provide back-up to cement during the life of the well.
| _ | Xpandable steel ECP-C | Xpandable steel AZIP-W | Xpandable steel AZIP-C 0-0 | Xpandable steel AZIP-C 1-0 | Xpandable steel AZIP-C 1-1 |
|---|---|---|---|---|---|
| Mounting | Crimped | Welded | Crimped | Crimped | Crimped |
| Valve system | Lock valve closing permanently packer expansion port, and trapping fluid inside packer | Safety closing valve | Safety closing valve | Lock valve closing permanently packer expansion port. Annulus compensation valve (one side) | Lock valve closing permanently packer expansion port. Dual Annulus compensation valve (both sides) |
| Sealing System | Deformable corrosion-resistant alloy (CRA) sleeve with elastomer seal | Deformable corrosion-resistant alloy (CRA) sleeve with elastomer seal | Deformable corrosion-resistant alloy (CRA) sleeve with elastomer seal | Deformable corrosion-resistant alloy (CRA) sleeve with elastomer seal | Deformable corrosion-resistant alloy (CRA) sleeve with elastomer seal |
| Reliability | Life of well valve system | Life of well (Sweet environment) | Life of well (Sweet and Sour environment) | Life of well (Sweet and Sour environment) | Life of well (Sweet and Sour environment) |
| Performance | High DeltaP achieved with moderate setting pressures | Differential pressure hold by steel sleeve mechanical resistance Unaffected by temperature variations | Differential pressure hold by steel sleeve mechanical resistance Unaffected by temperature variations | Self energized High pressure differential from one direction Unaffected by temperature variations | Self energized High pressure differential from two directions Unaffected by temperature variations |
| Max DeltaP Compensated | Up to 5,000 psi, lower for bigger sizes | 10,000 psi | Up to 3,000 psi depending on diameter and sleeve thickness | Up to 3,000 psi depending on diameter and sleeve thickness | Up to 3,000 psi depending on diameter and sleeve thickness |
| Max DeltaP Not Compensated | Up to 5,000 psi, lower for bigger sizes | Up to 3,000 psi depending on diameter and sleeve thickness | Up to 3,000 psi depending on diameter and sleeve thickness | Up to 3,000 psi depending on diameter and sleeve thickness | Up to 3,000 psi depending on diameter and sleeve thickness |
| Max Temp. | 250 degF - 120 degC | 300 degF - 150 degC | 302 degF - 150 degC | 302 degF - 150 degC | 302 degF - 150 degC |
| Qualification | API 19 OH V2 | API 19 OH V1 | API 19 OH V1 | API 19 OH V1 | API 19 OH V1 |
