Operations

In a typical application, a Sea NG ship loads for a period of one to two days and then will sail directly to the discharge location, where gas is discharged at the rate and pressure specified by the user. Once fully discharged, the Sea NG ship will sail directly back to the loading location to repeat the cycle. By using multiple ships, the loading and discharge can be continuous and meet contract volumes (View Animation).

Key Operational Features

• Sea NG’s patented dual pressure manifold optimizes loading and unloading rates and helps control gas temperatures.
• Compression and dehydration occur within the temperature and pressure capabilities of conventional process pipe work.
• A wide range of gas compositions can be accommodated.
• Continuous delivery can be achieved without the need for storage at either the loading or discharge site because the ships provide both storage and transportation.
• The loading and discharge rates can be varied or interrupted because compression equipment does not require continuous even throughput. This allows the loading and discharge rates to be adjusted as required by customers.

At the discharge site the pressure energy stored in the Coselles can be partially recovered. Turbo expanders can be used to produce mechanical power. The cold gas resulting from decompression can be used to increase the efficiency of a power plant by cooling the intake air.