Investor Presentaiton

MYBP NGRAYONG FORMATION - SHALLOW TARGET AGE/ SERIES Madura Strail/Onshore East Java / Madora PISTOCENE MIOCENE MIDDLE PLIOCENE LATE Karly Late LATE EARLY OLIGOCENE EARLY EOCENE MIDDLE LATE MADAOPING Stratigraphy of the East Java Basin MAIN PHASES -Wonocolo Formation Tuban Formation_ Platten Lst Prupuh-Kujung Unit x chalky lat Kujung Formation Kujung Unit I Kujung Unit 1 Ngrayong Offshore, East Java Sea LATE MIOCENE-RECENT Beginning 7 MYBP, local lectonic events control facies development. From latest Pliocene, modern volcanic arc contributes huge quantities of feldspathic/lithic sand. Rancak Lst. WONOCOLO CYCLES Widespread deep marine marl with minor sands. TUBAN & NGRAYONG CYCLES. Renewed clastic deposition; widespread quartz sand occurs acroes East Jova carbonate platform and reefs KUJUNG CYCLE Initial regressive phase deposits clastics, then a major trangressive and carbonate rich phase as regional subsidence continues Ngimbang Formation NGIMBANG CYCLE initiation of back arc basins. Multiple half graben structures with high rates of subsidence, Rifts initially infilled by lacustrine sediments, then continuing regional subsidence leads to marine transgression. Lacustrine shale Modified from CGR 1997 Metasedimentary & Igneous Basement CCS Reservoir Target Old Andesite Volcanism S of modern arc Modern Volcanism Volcanism 1002 KUMAN-1 PA JOB PERTAMA-TREND TUBAS Surabay um! om M இத 41-1 200 MONETOR 0 9 NORAYONG FORMANON QUO Zwan FOTOSES WELL SATH FORMATION CH FIELD SECTION FROM JO 1500 MT MOT DILLED THROUGH HTT ODER DUTCH WO - БЕСТом клом вновь Outcrop distribution of the Ngrayong Formation (Ardhana, TEKNOL

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