PETROLEUM GEOLOGY
  • Home
  • Introduction
  • Content
    • Petroleum Geochemistry
    • Origin of Petroleum >
      • Evaluation of Source Rocks
      • Generation & Migration
      • Geologic Time
    • Accumulation and Traps >
      • Basin Environment
      • Structural Trap
      • Stratigraphic Trap
    • The Reservoir >
      • The Subsurface Environment
      • Reservoir rocks >
        • Sedimentary rocks
        • Rock properties
      • Recovery Techniques
      • Conventional Fluids
      • Nonconventional Fluids
      • Petrophysics
      • Reservoir Estimation
    • Shale oil >
      • History of Shale oil
      • Oil Shale
      • Shale oil extraction
    • More about Petroleum >
      • Types of drilling bits
      • Drilling Fluids/Mud and Components
      • Oil-Rich Countries
      • Facts about Petroleum
      • Oil Measurement Unit
      • Forecast of Energy Usage
      • Exploration Techniques
      • Geologist & Engineer
      • Impacts on environment
      • World Reserves
      • Petroleum in Thailand
      • NOC & IOC
      • Digital Oilfields
      • Career in PE
      • Blowout Preventer(BOP)
      • HSE Basic Concepts
    • Geophysics >
      • Geophysical surveys for petroleum
    • From Exploration to Refining
    • Well logging
    • Real-Time Oil Price
    • Glossary of Oil and Gas Terms
  • Contact
  • About
  • Blog

ORIGIN OF PETROLEUM

There are two theories for the origin of Petroleum | INORGANIC & ORGANIC
The two topics below are part of Origin of Petroleum
evaluation of source rocks
generation & migration

​INORGANIC OR ABIOTIC ORIGIN

​Inorganic origin theories state that petroleum is formed from Earth itself, due to
chemical interactions deep within the Earth.
​These theories assume that petroleum is not finite
​as substances like oil and gas didn’t run out of till now.

Let's take it easy with a flow chart

Picture

This theory has 4 sub-theories

Metal carbide theory
This theory is stated by a Russian Chemist.
He told that "Deposition of petroleum is controlled by tectonic activities (Occur during life of sedimentary rock)"
This theory is explained by the "Metal carbide theory"
Picture
Volcanic theory
The gas will be released from traps of the mantle via volcanic activity or eruption.
Earthquake
The gas will be released from deep parts in Earth's mantle via tectonic activities, such as faults.
Serpentinization
Hydrocarbons are a by-product from metamorphic transformation of green, dark Olivine minerals (in Earth's mantle).

ORGANIC​ ORIGIN



​​​​Organic origin theory states that petroleum
are finite substances which are formed
​from organisms decaying in the subsurface
Picture
Reference: www.7diphone.com

Let's take it easy with a flow chart

Picture

ADDITIONAL KNOWLEDGE

- Most hydrocarbons are produced close to belts of tectonic activities
- Brine is present in petroleum
​- Petroleum is found only in sedimentary rocks not in igneous or metamorphic rocks
- The organic carbon found in plants is depleted into C13 from photosynthesis process
- Dead organic matter is depleted by radioactive decaying
​- Both of depletion above is found in petroleum & natural gas
Reference
http://petrowiki.org/Origin_of_petroleum

Picture

Salintip Udomsirinanchai

Petroleum Engineering Student
Chulalongkorn University
Powered by Create your own unique website with customizable templates.
  • Home
  • Introduction
  • Content
    • Petroleum Geochemistry
    • Origin of Petroleum >
      • Evaluation of Source Rocks
      • Generation & Migration
      • Geologic Time
    • Accumulation and Traps >
      • Basin Environment
      • Structural Trap
      • Stratigraphic Trap
    • The Reservoir >
      • The Subsurface Environment
      • Reservoir rocks >
        • Sedimentary rocks
        • Rock properties
      • Recovery Techniques
      • Conventional Fluids
      • Nonconventional Fluids
      • Petrophysics
      • Reservoir Estimation
    • Shale oil >
      • History of Shale oil
      • Oil Shale
      • Shale oil extraction
    • More about Petroleum >
      • Types of drilling bits
      • Drilling Fluids/Mud and Components
      • Oil-Rich Countries
      • Facts about Petroleum
      • Oil Measurement Unit
      • Forecast of Energy Usage
      • Exploration Techniques
      • Geologist & Engineer
      • Impacts on environment
      • World Reserves
      • Petroleum in Thailand
      • NOC & IOC
      • Digital Oilfields
      • Career in PE
      • Blowout Preventer(BOP)
      • HSE Basic Concepts
    • Geophysics >
      • Geophysical surveys for petroleum
    • From Exploration to Refining
    • Well logging
    • Real-Time Oil Price
    • Glossary of Oil and Gas Terms
  • Contact
  • About
  • Blog