10. Gravity and Petroleum System_Genap_2014-2015_TP.pptx

10. Gravity and Petroleum System_Genap_2014-2015_TP.pptx -...

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GEOFISIKA EKSPLORASI Gravity data analysis for Oil and Gas Exploration Dr. Ir. Eko Widianto, MT Semester Genap_2014 - 2015 Program Studi Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti 10
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1 INTRODUCTION: Definition, Level Petroleum Investigation, Role of Geophysical Methods 2 Fundamental of Seismic Method 3 Seismic Acquisition 4 Seismic Processing 5 Seismic Structural Interpretation 6 Seismic Stratigraphic Interpretation 7 Seismic Interpretation Exercise (2X) 8 Review of Gravity Method 9 Paradigm Shift in Gravity Data Utilization 10 Gravity data analysis for Oil and Gas Exploration 11 Gravity Data analysis for Reservoir Monitoring LECTURE MATERIALS 2
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GRAVITY AND PETROLEUM SYSTEM
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1. INTRODUCTION 2. METHODOLOGY a. Bouguer Anomaly b. Spectrum Analysis c. Filtering (Regional and Residual separation) d. Gravity Deconvolution e. Second Vertical Derivative (SVD) f. Fault Analysis using SVD 3. PRODUCT OF STUDY a. Various Gravity Maps b. Basin Configuration Map c. Petroleum System Analysis 1. Basin and Depocenter Enhancement 2. Hydrocarbon Resources Calculation 3. Regional Migration Pathways Map 4. Reservoir Development Identification 4
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INTRODUCTION Level of Petroleum Investigation
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1st SEDIMENTARY BASIN SEDIMENTARY BASIN 2nd PETROLEUM SYSTEM PETROLEUM SYSTEM 3rd EXPLORATION PLAYS EXPLORATION PLAYS 4th PROSPECTS PROSPECTS Magoon and Dow (1994) Four Levels of Petroleum Investigation ECONOMICS NOT IMPORTANT ECONOMICS VERY IMPORTANT
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Basin Review Petroleum System Play Concept/ Prospect Geological and Petroleum Generating Processes Risk Engineering Volumetric Economic Analysis Post Drill Review Optimization PETROLEUM SYSTEM IN THE EXPLORATION EVALUATION PROCESS After Schneidermann & Robert M. Otis, IPA 1997
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Sedimentary basins, petroleum systems, plays, and prospect can be view as separate levels of investigation, all of which are needed to better understand the genesis and habitat of hydrocarbons. Sedimentary basin investigations emphasize the stratigraphic sequence and structural style of sedimentary rocks. Petroleum system study describe the genetic relationship between a pod of active source rock and the resulting oil and gas accumulations. Investigation of play describe the present-day geologic similarity of a series of present-day traps. Study of prospects describe the individual present-day trap
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1   In what type of basin does the area lie? 2   How old is the sedimentary sec on? 3   Are source beds, reservoirs and cap rocks present? 4   What is the thermal history of the basin and the surrounding area? 5   Are there hydrocarbon migra on possibili es? 6   Are there traps and, if so, of what type and age?
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