[
ABSTRAKSistem panas bumi vulkanik, bertemperatur tinggi dan liquid dominated
Dieng memiliki potensi sebesar 355 MWe meliputi area Sileri, Sikidang-Merdada
dan Pakuwaja. Hingga saat ini telah beroperasi pembangkit listrik berkapasitas
1x60 MW disuplai oleh uap dari sumur di area Sileri.
Re-evaluasi strategi pengembangan lapangan panas bumi Dieng secara
terpadu dilakukan dengan mengkaji data geologi, data geokimia manifestasi dan
sumur dan data geofisika. Kajian geokimia meliputi air, gas, isotop untuk
mengetahui karakteristik kimia reservoir, didukung oleh model 2D
Magnetotellurik (MT) yang menggambarkan distribusi resistivitas bawah
permukaan, model 2D gravitasi yang menggambarkan struktur bawah
permukaan, serta didukung oleh struktur geologi, vulkanostratigrafi dan alterasi
hidrothermal.
Hasil penelitian menunjukkan bahwa terdapat dua zona upflow utama di
Sileri dan Sikidang. Zona asam di Sikidang ditunjukkan oleh keberadaan fluida
magmatik, isotop 18O yang enrich dan mendekati zona andesitic water di sekitar
sumur DNG-2 dan DNG-8. Zona aman silica scaling di area Sileri berada di
sekitar sumur HCE-31 dan DNG-10.
Pengembangan lapangan Dieng selanjutnya masih mungkin dilakukan di
area bagian timur laut yang ditunjukkan oleh keberadaan claycap dan heat source
pada zona upflow Sileri.
ABSTRACTVolcanic geothermal systems, high temperature and liquid dominated Dieng has
a potential of 355 MWe covers an area Sileri, Sikidang-Merdada and Pakuwaja.
Until currently operates power plants with a capacity of 1x60 MW supplied by
steam from wells in Sileri area.
Re-evaluation of Dieng development strategy in integrated to seek the
extension of field development by assessing the geochemical data of
manifestations and wells, geophysical data and geological data. Geochemical
studies include water, gas and isotope to describe reservoir chemical
characteristic, supported by a 2D model of Magnetotelluric (MT) which describes
the distribution of subsurface resistivity, 2D model of Gravity depicting
subsurface structures, and supported by geological structure, vulkanostratigrafy
and hydrothermal alteration.
There are two main upflow zone in Sileri and Sikidang. Acid zone shown
at magmatic fluid existence, enrich of 18O and approximate the andesitic water
zone in around DNG-2 and DNG-8. Safe Zone of Silica Scaling be in around of
HCE-31 and DNG-10.
Furthermore, Dieng development is possible in north-east area which
show in clay cap and heat source existence in Sileri Upflow Zone.;Volcanic geothermal systems, high temperature and liquid dominated Dieng has
a potential of 355 MWe covers an area Sileri, Sikidang-Merdada and Pakuwaja.
Until currently operates power plants with a capacity of 1x60 MW supplied by
steam from wells in Sileri area.
Re-evaluation of Dieng development strategy in integrated to seek the
extension of field development by assessing the geochemical data of
manifestations and wells, geophysical data and geological data. Geochemical
studies include water, gas and isotope to describe reservoir chemical
characteristic, supported by a 2D model of Magnetotelluric (MT) which describes
the distribution of subsurface resistivity, 2D model of Gravity depicting
subsurface structures, and supported by geological structure, vulkanostratigrafy
and hydrothermal alteration.
There are two main upflow zone in Sileri and Sikidang. Acid zone shown
at magmatic fluid existence, enrich of 18O and approximate the andesitic water
zone in around DNG-2 and DNG-8. Safe Zone of Silica Scaling be in around of
HCE-31 and DNG-10.
Furthermore, Dieng development is possible in north-east area which
show in clay cap and heat source existence in Sileri Upflow Zone.;Volcanic geothermal systems, high temperature and liquid dominated Dieng has
a potential of 355 MWe covers an area Sileri, Sikidang-Merdada and Pakuwaja.
Until currently operates power plants with a capacity of 1x60 MW supplied by
steam from wells in Sileri area.
Re-evaluation of Dieng development strategy in integrated to seek the
extension of field development by assessing the geochemical data of
manifestations and wells, geophysical data and geological data. Geochemical
studies include water, gas and isotope to describe reservoir chemical
characteristic, supported by a 2D model of Magnetotelluric (MT) which describes
the distribution of subsurface resistivity, 2D model of Gravity depicting
subsurface structures, and supported by geological structure, vulkanostratigrafy
and hydrothermal alteration.
There are two main upflow zone in Sileri and Sikidang. Acid zone shown
at magmatic fluid existence, enrich of 18O and approximate the andesitic water
zone in around DNG-2 and DNG-8. Safe Zone of Silica Scaling be in around of
HCE-31 and DNG-10.
Furthermore, Dieng development is possible in north-east area which
show in clay cap and heat source existence in Sileri Upflow Zone., Volcanic geothermal systems, high temperature and liquid dominated Dieng has
a potential of 355 MWe covers an area Sileri, Sikidang-Merdada and Pakuwaja.
Until currently operates power plants with a capacity of 1x60 MW supplied by
steam from wells in Sileri area.
Re-evaluation of Dieng development strategy in integrated to seek the
extension of field development by assessing the geochemical data of
manifestations and wells, geophysical data and geological data. Geochemical
studies include water, gas and isotope to describe reservoir chemical
characteristic, supported by a 2D model of Magnetotelluric (MT) which describes
the distribution of subsurface resistivity, 2D model of Gravity depicting
subsurface structures, and supported by geological structure, vulkanostratigrafy
and hydrothermal alteration.
There are two main upflow zone in Sileri and Sikidang. Acid zone shown
at magmatic fluid existence, enrich of 18O and approximate the andesitic water
zone in around DNG-2 and DNG-8. Safe Zone of Silica Scaling be in around of
HCE-31 and DNG-10.
Furthermore, Dieng development is possible in north-east area which
show in clay cap and heat source existence in Sileri Upflow Zone.]
T43448-Solikhatun Yuniasih.pdf :: Unduh