KANGEAN BLOCK NORTHEAST JAVA BASIN Oleh : Aluwisia Juli H (26139) Herning Dyah K W (26491)
LOKASI Pembagian daerah secara geologi (geological province) dan sumur pada blok Kangean (Phillips et al.,1991)
GEOLOGI REGIONAL REGIONAL TECTONIC SETTING Pre tertiary Tertiary Back arc basin Paleogene ekstensional rifting Neogene compressional wrenching Plio- Pleistocene Compressing Thrust folding
REGIONAL STRATIGRAPHY Fase transgresi Eosen – Oligosen Awal Fase Transgresi Oligosen Akhir – Miosen Awal Fase regresi Miosen Tengah Fase regresi Miosen Akhir - Pliosen
REGIONAL TECTONIC SETTING (Manur, H. & Barraclough, R., 1994)
(Mudjiono R & Pireno G., 2001 dengan modifikasi) HIGH & LOW PATTERN (Mudjiono R & Pireno G., 2001 dengan modifikasi)
LOCAL TECTONIC Cretaceous subducting Cret. syncline Paleocene/Eocene backarc extension E – W Half graben Early – Middle Miocene N – S compressional Uplift of Central High Late Miocene N – S compressional uplift & inversion half graben Pagerungan young anticline Present day compressional
Tectonic Model of East Java – Biliton Basinal Area (Purnomo J & Purwoko 1994)
FOUR DISTINCT STRUCTURAL PROVINCES Northern Platform Central high Kemirian Terrace Southern Basin
Pembagian daerah secara geologi (geological province) Structural Province Pembagian daerah secara geologi (geological province) (Phillips et al.,1991)
BASIN CONFIGURATION Syn – rift : Paleocene – Mid. Eocene Pre – Ngimbang :ss, shale, coal Ngimbang Clastic :q ss-shale, coal Rifting : Eocene Ngimbang Carbonate Sagging : Late Eocene Ngimbang Shale Kujung Fm : carbonate, shale PrupuhFm : carbonate Cepu Fm : shale Rancak Fm : carbonate Inversion : Late Miosen Mundu Fm : shale Paciran : carbonate Lidah : shale
LOCAL STRATIGRAFI COLUMN (Phillips et al.,1991)
Cross section of Northern Platform (Phillips et al.,1991)
PETROLEUM SYSTEM Source rock : Clastic Pre –Ngimbang Clastic Ngimbang Pre Tersier (post mature) Reservoar : Ngimbang : SS, Carbonate Prupuh : Carbonate Paciran : SS, Carbonate
Trap : Structural :Pagerungan Anticline Stratigraphy :Carbonate (build up) Seal : Ngimbang Shale LIdah Oil Migration :10 MA (Peak oil Ngimbang) 10 MA (Peak gas Pre Ngimbang)
Regional Tectonic Setting (Manur, H. & Barraclough, R., 1994)
Major Tectonic Framework In Western Indonesia (Purnomo J & Purwoko 1994)
Regional Stratigraphy (Purnomo J & Purwoko 1994)
Seismic Cross Section Northern Platform (Phillips et al.,1991)