#Dau Khi #PetroleumGeology #HydrocarbonMigration #Reservoir #OilAndGas #CongNgheDau Khi #TimKiemTop
If oil and gas are generated in so many places underground, why does only a very small percentage accumulate into giant oil and gas fields enough to generate hundreds of trillions of dong in revenue?
On June 17, 2026, the international petroleum geological community continued to share and discuss one of the most important concepts of the energy industry, which is the process of oil and gas migration from source rocks to reservoir traps. This is considered the key to determining the success or failure of billions of dollars in exploration investments worldwide.
Many people believe that as long as there is oil in the ground, it can be exploited. The reality is completely different.
Oil and natural gas are often produced in layers of organic-rich source rock thousands of meters below the earth's surface. After millions of years of temperature and pressure, hydrocarbons begin to form and find their way upward.
Without suitable geological conditions, this amount of oil and gas will be completely lost to the natural environment.
Thanh Petroleum SystemWhat Elements Does It Include?
Component Role
Source rock Where oil and gas is born
Migration pathways Allow oil and gas to move
Reservoir Rocks Storage of oil and gas
Barrier stone Prevents oil and gas from escaping
Geological trap Concentrating oil and gas into fields
Formation time Determines accumulation capacity
If just one link is missing, the entire oil and gas system can fail.
The Journey of a Drop of Oil Takes Tens of Millions of Years
Phase 1
Petroleum is produced in mature source rock deep underground.
Phase 2
Hydrocarbons escape the source rock through microscopic fractures.
Phase 3
Oil and gas continue to move along faults and conductive strata.
Phase 4
When encountering an impermeable rock layer, oil and gas are trapped underneath.
Phase 5
Forming geological traps and accumulating into commercial oil and gas fields.
Structure of a Typical Oil Field
Natural gas
----------------
Crude oil
----------------
Seam water
Because gas is the lightest, it is always at the top.
Crude oil has a density greater than gas but less dense than water, so it lies in the middle.
Reservoir water is at the bottom of the reservoir.
Why Do Oil and Gas Companies Spend Trillions of Dong on Seismology?
A modern offshore well can cost from 1,000 billion VND to more than 5,000 billion VND depending on the region.
Cost k3D seismic survey before drilling often costs hundreds of billions of dong.
The goal is to accurately identify the following factors
Survey items Meaning
Structural traps Identify places of accumulation
Fault Check migration path
Reservoir rock Evaluation of retention capacity
Barrier stone Assess tightness
Basin model Forecasting oil and gas potential
Famous Oil Fields Formed Through Hydrocarbon Migration
National oil and gas field
Ghawar Saudi Arabia
Burgan Kuwait
Rumaila Iraq
Prudhoe Bay USA
White Tiger Vietnam
These mines all have in common the complete convergence of source rock, conduit, reservoir rock, barrier rock and geological traps in the same oil and gas system.
Huge Economic Value From A Successful Petroleum System
Suppose a field has reserves of 500 million barrels of oil.
If Brent oil price is about 2,470,000 VND per barrel, the total value of exploited oil can reach
500,000,000 boxes × 2,470,000 VND
Equivalent to about 1,235,000,000,000,000 VND
That is more than 1.23 million billion VND in theoretical revenue before deducting exploitation, operating costs and taxes.
That is why corporations such as ExxonMobil, Chevron, Shell, BP, TotalEnergies, Saudi Aramco or PetroVietnam always invest heavily in geological research and basin modeling.
The story of hydr migrationocarbon shows that oil and gas are more than just underground resources. It is the result of tens of millions of years of geological movement, where just a small deviation in formation time or stratigraphic structure is enough to cause the entire system to fail.
A billion-dollar oil field does not start with a drill, but with an accurate understanding of the mysterious journey of each hydrocarbon molecule in the ground.
#DauMo #KhiDot #HydrocarbonMigration #PetroleumSystem #ReservoirEngineering #PetroleumGeology #NangLuong #CongNgheDauKhi #TimKiemTop #OilAndGas #BachHo #Exploration #Geology #EnergySecurity
