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The HydraHemera™ PWC® System consists of two basic components; the HemeraPoseidon™ and an HydraArchimedes™ cement assurance tool.
More complex wells require more sophisticated components. The HydraHemera™ with an Archimedes™ (HydraHemera™) allows operations to be performed in environments with heavier mud densities and increasing amount of annular cement.
The Hemera™ Jet-washing Tool is used to wash and clean out movable debris, e.g. barite, formation, cement traces, etc., in the annuli behind the perforated casing(s). It features jet-nozzles which are positioned at irregular angles and engineered for optimum configuration and exit velocity. The jets penetrate and clean thoroughly behind (multiple) perforated casing(s).
The Hemera™ Jet-washing Tool ensures optimum conditions in the casing annuli prior to placing the plugging material in the cross section. Debris, old mud, barite and old cuttings are replaced by clean wash fluid (e.g., mud or brine).
Using a ball drop mechanism after the washing sequence, the Hemera™ Jet-cementing Tool is activated. Plugging material is placed in the entire cross section of multiple annuli, and hence, establishing a proper barrier in the well for P&A or sidetrack purposes.
The HydraArchimedes™ Tool consist of twisted rubber blades and when rotated throughout the cement job it forces any wellbore fluid inside of the casing to be forced out to the annuli. When rotated it creates a small pressure drop from top of the tool to the bottom which aids in 'flipping the hole' by pushing internal cement out to the annuli and brining in-situ fluid from the annuli back into the wellbore.
After completing a perforating run with big hole charges in the target zone, the HydraHemera™ system is run in hole to the top of the perforated section. The HydraHemera™ Bull Nose allows for circulation while running in hole. A ball is dropped which activates the cleaning nozzles. Clean fluid/mud is pumped which exits the HydraHemera™ as high energy jets, thoroughly cleaning behind the casing(s). A second ball drop activates the cementing nozzles in the HydraHemera™ Cementing Tool, which feature flow area optimized for cement. Cement is pumped while rotating the assembly, and the cement is placed efficiently into the intermediate and outer annuli utilizing the HydraArchimedes™ tool
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