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COOEC Receives USPTO Patent Approval for Shallow Water Jacket Installation Method

Source: 4/28/2015, Location: Asia

On April 27, it was learned that the design branch of Offshore Oil Engineering Co., Ltd. (COOEC) has received a patent approval (US20150050089) from the United States Patent and Trademark Office for a novel shallow-water jacket installation method.

The method is especially designed for shallow-water heavy jacket installation applications. The method utilizes a special type of air bags, called launching air bags, to provide low cost net buoyancy in order to make a shallow water jacket self afloat with a sufficient bottom clearance with seabed.

At a floating state a minimum size installation crane vessel could be used to perform all needed jacket installation operations such as lowering, setting-down to seabed, driving foundation piles, grouting and the welding between foundation piles and jacket leg tops. For a shallow water heavy jacket installation, a crane vessel cost usually represents a majority cost of a jacket installation. Therefore, a significant savings could be achieved if a minimum size crane vessel could be used, instead of a large size crane vessel.

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