What are Carrier Beds? | Petroleum Geology

• Oil migration

  Petroleum: Migration through carrier beds
  The hydrocarbons expelled from a source bed next move through the wider pores of carrier beds (e.g., sandstones or carbonates) that are coarser-grained and more permeable. This movement is termed secondary migration. The distinction between primary and secondary migration is based on pore size and rock type. In some cases, oil may migrate through such permeable carrier beds until it is trapped...
  
  
  
  
  
  

  

  The yellow layer indicates a carrier bed