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 efficiency of high pressure stimulation operations below.
Efficient primary cementing can be difficult, particularly when there is potential crossflow, a tight borehole, or a risk of gas migration.
Xpandable Steel Packer Solution
Using a high pressure steel barrier to seal the annulus while the cement is setting will prevent crossflow or channeling, support the cement to keep it in place, eliminate any gas migration, and help to centralize the casing. A steel packer run on the casing can be expanded into the wet cement to eliminate these potential problems and ensure cement and annulus integrity..
| _ | Xpandable steel ECP-C | Xpandable steel AZIP-C 1-0 |
|---|---|---|
| Mounting | Crimped | Crimped |
| Valve system | Lock valve closing permanently packer expansion port, and trapping fluid inside packer | Lock valve closing permanently packer expansion port. Annulus compensation valve (one side) |
| Sealing System | 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 and Sour environment) |
| Performance | High DeltaP achieved with moderate setting pressures | Self energized High pressure differential from one direction Unaffected by temperature variations |
| Max DeltaP Compensated | Up to 5,000 psi, lower for bigger sizes | 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 |
| Max Temp. | 250 degF - 120 degC | 302 degF - 150 degC |
| Qualification | API 19 OH V2 | API 19 OH V1 |
