Plate Tectonic conceptual model of basin evolution

Rifting

Passive Margin

Active Margin

Island arc

Collision

Continent

BASIN ANALYSISBASIN ANALYSIS

SUBSIDENCESUBSIDENCENO NO SUBSIDENCESUBSIDENCE NO NO SEDIMENTARY BASINSEDIMENTARY BASIN

NONO SEDIMENTARY BASIN SEDIMENTARY BASIN NONO HYDROCARBON HYDROCARBON

NO NO HYDROCARBONHYDROCARBON NO NO MODERN CIVILIZATIONMODERN CIVILIZATION ? ?

SUBSIDENCESUBSIDENCE Vs Vs PLATE MOTIONPLATE MOTION

VERTICAL MOV. VERTICAL MOV. Vs Vs LATERAL MOV.LATERAL MOV.

LATERAL MOVEMENT :INTERACTION BETWEEN PLATELATERAL MOVEMENT :INTERACTION BETWEEN PLATE1. DIVERGENT SUBSIDENCE DUE TO CRUSTAL SCRATCHING.

2. CONVERGENT SUBSIDENCE DUE TO CRUSTAL LOADING

3. TRANSFORM SUBSIDENCE DUE TO BOTH SCRAT. AND LOAD

LATERAL MOV. PROMOTE VERTICAL MOV. LATERAL MOV. PROMOTE VERTICAL MOV.

BASIN ANALYSISBASIN ANALYSIS

ORIGIN OF SUBSIDENCEORIGIN OF SUBSIDENCE

1. SUBSIDENCE TECTONIC PLT MOV.

2. SUBSIDENCE THERMIC CONSEQ. OF LAT MOV.

3. SEDIMENT LOADING CONSEQ. OF VERT. MOV.

BASIN ANALYSISBASIN ANALYSIS

SUBSIDENCESUBSIDENCEL L

t

L’

T = 30 KM (CONTINENTAL)

L’ > L

T > t CRUSTAL THINING

A

A

BASIN ANALYSISBASIN ANALYSIS

SUBSIDENCESUBSIDENCE

SHEARING STRESS

LISTRIC FAULT MODEL

BASIN

LISTRIC FAULT

BASIN ANALYSISBASIN ANALYSIS

SUBSIDENCESUBSIDENCEPLANAR FAULT MODEL

BASIN ANALYSISBASIN ANALYSIS

SUBSIDENCESUBSIDENCE

BASIN RANGE

SHEARING STRESS

PLANAR FAULTBLOCK ROTATION

BLOCK ROTATION MODEL

BURIAL HISTORY

BURIAL HISTORY

Objective Basin history• Tectonic Trap Formation• Basin Filling Architecture• Thermal Maturation

Data: Thickness• Well• Seismic• Measuring section

BURIAL HISTORYMethod :

• Backstripping

Assumption : (Mc Kenzie 1978)• Local subsidence • Asymptotic thickness evolution• Linear thickness evolution

BURIAL HISTORY

Tectonic subsidence correction:

• Paleobathymetry• Eustatic• Sediment load

Tugas 1

Resume dari

Hakekat dan Komposisi hidrokarbon

Dikumpul minggu depan 28 Februari 2005

Quiz 1

Jelaskan apa yang dimaksud dengan:

• Derajat API

• Isoparafin

• Normal Parafin

• Polimer

• Deret alkena

• Aromatik

• Derajat Baume

• Homolog

• Ikatan Jenuh dan tak Jenuh

• Sikloparafin