Abstract

The economic production of natural gas from oceanic hydrate deposits will not occur using offshore drilling systems. The high cost of semi-submersible or tethered, deep-water, offshore drilling equipment is economically justified by high production of dry gas over a long time. By definition, hydrated formations will produce wet gas at low pressure and low production rates. Fortunately hydrates are located relatively close to the seafloor when compared to conventional gas reservoirs. Large numbers of low-cost wells could produce enough gas to recover costs. A workboat-based drilling system that includes an integrated gas production capability is described.

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