Halliburton’s VersaFlex® XtremeGrip expandable liner hanger system takes the standard VersaFlex liner hanger to the next level. This high-performance, advanced metal sealing technology provides a fully compliant metal seal with a fully bonded resilient elastomeric seal to account for imperfections in the parent casing. Its ability to provide an ISO 14310 V0 tested, gas-tight seal on setting is surpassed only by its ability to provide enhanced hang-weight capabilities at temperatures above 350°F (177°C).
Ideal for use in deepwater and offshore applications and wherever long liners are deployed, the VersaFlex XtremeGrip system is designed to mitigate risks and maintain hang-weight capabilities at elevated temperatures. The system offers increased robustness associated with liners and liner deployment. The hanger and running tool are assembled together and form an intrinsic packoff which minimises downhole tool components and potential leak paths while cementing. The standard tool setup offers wash-down capabilities, rotation capabilities without bearings and simultaneously allows for reciprocation of the liner. Once the cement has been placed and the tool actuates the expansion process, the hanger is set to offer bi-directional load capabilities and provide a gas-tight, liner-top seal which eliminates remedial liner-top squeeze jobs after setting.
The unique body profile of the VersaFlex XtremeGrip system utilises engineered extrusion limiter rings to provide metal-to-metal seal and full bi-directional anchoring capability in all casing grades at elevated temperatures. Its clean-form design offers a smooth radial flow path allowing for unrestricted bypass area, which assist in reducing equivalent circulating densities (ECDs) during all phases of the operation.
Edited from various sources by Joe Green