Development History Of The Tiwi Geothermal Field, Philippines

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Journal Article: Development History Of The Tiwi Geothermal Field, Philippines

Commercial production of electricity from the Tiwi geothermal system began in 1979. In 1982, Tiwi became the world's first water-dominated system to produce more than 160 MWe. Today the field supplies about 11% of Luzon's electricity. Initially, the reservoir was single-phase liquid with a small, shallow steam zone on the east side. Temperature reversals in the first wells showed the east to be an outflow zone. As production began, reservoir pressure declined, two-phase conditions developed, and groundwater entered the reservoir from the east. As many production wells cooled, brine production increased and generation decreased from about 280 MWe in 1983 to about 190 MWe in 1986. Improvements to surface facilities and new wells drilled farther west raised generation to about 280 MWe by mid-1993. Separated brine was first injected into the reservoir, but this lowered steam production; injection is now outside the field.

David T. Gambill and Domeng B. Beraquit

Published Journal 
Geothermics, Date Not Provided

Not Provided
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David T. Gambill,Domeng B. Beraquit. . Development History Of The Tiwi Geothermal Field, Philippines. Geothermics. (!) .