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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
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