General Petroleum System

Orkney Source Rock

Orkney Reservoir Rock

Orkney Seal & Cap Rock

Orkney Traps

Yesnaby Sandstone Reservoir System

Houton Head Reservoir System





Hydrocarbon Potential Orkney Devonian

The Petroleum System  consists of four main Geologic components, source, reservoir, seal and trap plus additional processes necessary to generate and store hydrocarbons in the subsurface. Their presence is required to generate a viable EXPLORATION TARGET.

In and around Orkney all the major elements of the Petroleum System are present.


  • Organic Rich, Mature, Lake Laminites - Mudstone


  • Aeolian Desert Dunes

  • River Sands


  • Lake Laminites - Mudstone, Flagstones and Volcanics