Use of Geologic Maps and Structural Geology to locate an oil well

1
Use of Geologic Maps and Structural Geology to
locate an oil well
2
Oil Exploration

• Identify rock types and dip direction
• Transfer data to map
• Drawing geological map
• Identify geologic structures and draw cross
  section

3
Study Subsurface by Seismic Reflection

• W. W. Norton

4

• Test Borehole
• Oil!

5
Formation of Oil Page 62

• W. W. Norton

Source rock is impermeable organic rich shale
6
Oil is buoyant and moves through permeable
reservoir rock

• W. W. Norton

7
Oil rises until blocked by seal rock which is
impermeable

• W. W. Norton

8
Cross Section of Dome Oil Trap Page 63

• Oil reserves have to be trapped so the oil cannot
  escape.
• In the trap are
• Source rock
• Reservoir rock
• Seal rock