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    Agung DK

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    Induction

    Seismic Acquisition

    Seismic Processing Seismic Interpretation

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    INDUCTIONINDUCTIONINDUCTIONINDUCTION

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    Oil & Gas Industry Exploration

    Exploitation and Development

    Methods Geological

    Geophysical

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    Type of Rocks

    Igneous

    Sedimentary

    Metamorphic

    HC is Generated on Sedimentary Rock

    Plant and Animal remains

    T

    emperature, Pressure,T

    ime

    Chemical reaction It can be trapped or accumulated on any kind

    of rocks

    Geological Concepts

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    Igneous RockIgneous Rock

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    Sedimentary RocksSedimentary Rocks

    PERBUKITANPERBUKITAN

    DATARANDATARAN

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    Sedimentary RocksSedimentary Rocks

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    Sedimentary RocksSedimentary Rocks

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    Sedimentary RocksSedimentary Rocks

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    BS-11

    MICA SCHISTMICA SCHIST GNEISSIC TEXTUREGNEISSIC TEXTURE

    Metamorphic RocksMetamorphic Rocks

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    BS-12

    QUARTZITEQUARTZITEMARBLEMARBLE

    Metamorphic RocksMetamorphic Rocks

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    IgneousIgneous MetamorphicMetamorphic

    Igneous RocksIgneous RocksSedimentary RocksSedimentary Rocks Sedimentary RocksSedimentary Rocks

    MetamorphicMetamorphic

    Rocks DistributionRocks Distribution

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    Reading geological underground conditionusing some kind tools.

    Resistivity

    Gravity

    Gamma Ray

    Neutron Density

    Magnetic

    SEISMIC

    Geophysical Concepts

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    Firstly, used forEarthquake Study

    and Mitigation Used for

    characterizingEarth Layer

    HydrocarbonExploration

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    SEISMICSEISMIC

    AcquisitionAcquisition

    SEISMICSEISMIC

    AcquisitionAcquisition

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    Components

    Seismic Source

    Receiver

    Place

    Onshore

    Offshore

    Purpose Needs

    2D

    3D

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    Seismic Source

    CGGs Marthor hammer

    Cheap hammer

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    vibrator buggy

    Seismic Source

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    The most common, buried point source explosive for seismic.

    Seismic Source

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    Seismic Receiver

    Geophone Hydrophone

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    GEOPHONE

    LAPISANPELAPUKAN

    AIRMINYAKGAS

    BATUANS

    EDIMEN

    t

    LAYER 1

    LAYER 2

    ri

    2D - Seismic Acquisition

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    GEOPHONES

    BATUANLANDAS

    AIR

    GAS

    LINTASANALATPEREKAM

    BATUANTUDUNG

    BATUAN RESERVOIR

    BATUAN INDUK

    MINYAK

    TITIK-TITIKTEMBAK

    LINTASANALATPEREKAM

    3D - Seismic Acquisition

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    Shotpoint # 1Hydrophone groups

    #1#2#3#4#56

    Separation between midpoints is

    1/2 separation between hydrophone groups

    Midpoints

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    Shotpoint # 2Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 3Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 4Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 5Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 6Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 7Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 8Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Shotpoint # 8Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

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    Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

    Shotpoint # 1

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    Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

    Shotpoint # 1

    Shotpoint # 2

    Shotpoint # 1Shotpoint # 2

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    Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

    Shotpoint # 1

    Shotpoint # 2

    Shotpoint # 1Shotpoint # 2

    Shotpoint # 3

    Shotpoint # 3

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    Hydrophone groups

    #1#2#3#4#5#6

    Midpoints

    Shotpoint # 1

    Shotpoint # 2

    Shotpoint # 1Shotpoint # 2

    Shotpoint # 3

    Shotpoint # 3

    Shotpoint # 4

    Shotpoint # 4

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    Hydrophone groups

    Midpoints

    Shotpoints # 1-8

    12

    34 5 6 7 8 138

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    Midpoints

    12

    34 5 6 7 8 138

    FoldFold or Multiplicity is the number of times that the same midpoint issampled by different shots and different receivers

    Fold

    Maximum Fold is achieved after the 6th shotMaximum Fold is achieved after the 6th shot

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    SEISMICSEISMIC

    DATADATAPROCESPROCESSSINGING

    SEISMICSEISMIC

    DATADATAPROCESPROCESSSINGING

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    PROCESSINGOBJECTIVESPROCESSINGOBJECTIVES

    1. IMPROVE DATA QUALITY

    2. PRESENT DATA IN

    CONVENIENT FORM

    1. IMPROVE DATA QUALITY

    2. PRESENT DATA IN

    CONVENIENT FORM

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    Schematic Summary ofEssential ProcessesSchematic Summary ofEssential Processes

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    1. DEMULTIPLEX2. GEOMETRY SPECIFICATION

    3. DATAEDIT

    4. PHASECOMPENSATION

    5. DATUM CORRECTION

    6. GAIN

    7. SIGNAL & NOISE

    8. FILTERING

    9. DECONVOLUTION10. RESIDUALSTATICS

    11. NMO & VELOCITYANALYSIS

    12. CDP & STACK

    13. MIGRATION

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    SEISMICSEISMIC

    InterpretationInterpretation

    SEISMICSEISMIC

    InterpretationInterpretation

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    Seismic Interpretation

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    SEISMICSEISMIC

    DictionaryDictionary

    SEISMICSEISMIC

    DictionaryDictionary

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    Q &AQ &AQ &AQ &A