In my training classes, I am often asked about the rate and distances of oil and gas migration. There seems to be much confusion in understanding how petroleum migrates, and the controlling factors.
Long distance migration are observed in many basins. Here is a list of basins I am familiar with:
- Athabasca field, Alberta basin, Canada > 700 km from the kitchen
- Orinoco oil field, Venezuela, > 100 km
- East Texas field, Texas, USA, > 100 km
- Wolfcamp accumulations near outcrop in central Texas, Permian basin, > 200 km.
- Rubiales field, Llanos basin, Colombia > 100 km
- Mississippi oil trend in Kansas, Anadarko basin, > 500 km
- Ghawar field, Saudi Arabia, > 200 km.
|Figure 2. Typical burial history from deep water of Gulf of Mexico basin. The main generation window occurs over about 10 million years.|