An overview of the design and functionality of the Oceaneering subsea accumulator or Six Shooter is provided. The SixrnShooter was developed as a solution to the historical challenges of BOP emergency intervention. ROV tooling for subsearnBlowout Preventer (BOP) intervention has been limited to small hydraulic pumps which require substantial amounts of timernto operate BOP rams. With faster closing times recommended for emergency intervention, supplementary accumulatedrnvolume is required subsea. The Six Shooter can be launched from a support vessel, IMR vessel or Rig, eliminating the needrnfor costly Rig or BOP modifications. The unit can be deployed onto a custom designed mudmat or an existing structure.rnWhen deployed, the Six Shooter would allow a ROV (Remotely Operated Vehicle) of opportunity to function and providernhigh flow (100 gpm) and pressure (5000 psi) to the BOP via a flying lead. At these flow rates, the industry standardrnspecifications of 45 second ram closures can be obtained.rnEquipped with dual regulators, the output pressure of the Six Shooter can be selected with the turn of a ROV valve.rnDepending on the number of BOP functions that need to be closed during an emergency situation, additional units can berneasily added with standard high flow flying leads to increase the usable volume. The subsea accumulators are constructedrnwith materials that allow dependable and repeatable functioning over long exposures to a subsea environment.
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