Integration Of Sequences Seismic Stratigraphy, Invertion Of Accoustic Impedance, And Petrofisika For Analysis Of Resources Exploration Interval Tst- 2 At Southern Arjuna Sub Basin, Offshore North West Java, Indonesia

Abstract

Half Graben South Arjuna in Mature Basin had LU-1 WELL with Total Depth 15.000 feet is the only the one of the deepest well with bad respond log well and DST only trace oil resulted with the position of well location in depocenter of Half Graben South Arjuna sub.basin. Positif and Negatif Flower Structural are present abundance in this half graben area and be a migration path way along Oligocene and Early Miocene. Mapping of Positif and Negatif Flower Structural and Stratigraphic Trapping handling by Seismic Bio-Sequences Stratigraphy detail along Sequences boundaries 34 ma until Sequences boundaries 21.5 ma. Anomaly best responses using attribut fasies and amplitude RMS, MAX, MIN, Reflective Strength give respond oil and gas bearing. Integrated Mapping Probabilitas sand trapping P90, P50, P10 using Depth Structural Map overlay Distribution of Attribut Accoustic Impedance Invertion for Finding New Lead and New Contingent Speculatif Recoverable Resources better for TST1 Zone ( 30-32 ma) is 205.1 MMBOE, TST2 Zone ( 26-28 ma) is 81.3 MMBOE, TST3 Zone ( 22.3-23 ma) is 47.7 MMBOE. Probabilities for finding kind of anomalies it coult be reservoir of sandstone or limestone or coal. We make open windows vertical resolution of Seismic is 30-50 ms along seismic and references well for completed parameter such as total porosity, effective porosity, net pay thickness, for closure area from anomalies attribute seismic. Normal and Bourder Faulting Structure in this half graben happening since pre rifting sequences SB0– last Rifting SB3 (23 Ma) until inverting tektonic frameworking process. Flower Structure being to migration path way from source rock to reservoir rock and make combination trapping new play potensial. It could be because of since build of this sub basin growth controling by Meratus and Sumatera trend faulting along Paleogen can be make some problem from migration not charging in deepest and part of depocenter this half graben. Understanding and mapping detail using interval top marker every Seismic Sequences Stratigraphy zonation can make us more understanding about detail frameworking tectonosequences in this half graben. Model concept for finding hidden new stratigraphic play potensial can be our mapping for all kind trapping type such as stratigraphic, structural, or combinatin trapping because of isolated tidal sand frame working intensive and abundance in this half graben. Mapping handling for every single marker kronostratigraphic using attribute frekuensi and amplitude with totaly is 8 kind of zonation mapping. Sealing Capacity isolated tidal sand coming from shale of fluvial supratidal flooding and shale from tidal system. Probabiliti of Succes / POS every new potensial resources containing risk for drilling exploration and comercial issue for proven forecast production oil and gas.

AAPG Datapages/Search and Discovery Article #90354 © 2019 AAPG Asia Pacific Technical Symposium, The Art of Hydrocarbon Prediction: Managing Uncertainties, Bogor, (Greater Jakarta), Indonesia, August 7-8, 2019