Oceanic Exploration Feasibility Study for the East Timor Pipeline

6. PIPELINE SIZING

General

A 220km pipeline from Bayu Undan to Suai may be used to either supply the domestic East Timor market or feed into an LNG plant. The following pipeline sizes have been chosen:

• Option 1 – 28 inch Outside Diameter Pipeline for a Liquid Natural Gas plant
• Option 2 – 10 inch Outside Diameter Pipeline for domestic use

The following pressures were assumed for both pipelines:

Option 1 – 28 inch Diameter Pipeline

For an LNG plant to be feasible the production rate must be in the region of 1,000 mmscfd of gas, based on previous work performed by INTEC.

Preliminary calculations have been performed using the following pipeline parameters:

• Outside diameter     28 inch
• Wall thickness          less than 45mm

Calculations show that a 28-inch pipeline can flow 1,000 mmscfd of gas, with reasonable inlet and outlet pressures. This indicates that this size is sufficient for the LNG plant.

Option 2 – 10-inch Diameter Pipeline

To supply East Timor's population and domestic market, the consumption and pipeline size was established as follows:

An estimate for the consumption per capita in Timor is based on those generated by the IEO1997 World Energy Consumption of 1997. An average was taken of these in 1997 and those forecasted for 2005 for developing countries. These figures are substantiated by comparing them to the consumption per capita for the Philippines, which is used for comparisons of economic condition.

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