Oilfields.

[mickd1961]

A subject that fascinates me as well Des.

Provable reserves of oil seem to give us another 50 years of supply.

Although there is more oil still to be discovered there will become a point where it’s no longer financially viable to extract.

When you consider 7/10 of the World is covered by water and that much of the oil sits underneath it it just adds to the challenge.

The other thing that always fascinated me is the amount of living matter that has had to have been for these reserves to have been created and the length of time for this to happen.

Same with beaches, just the sheer volume of material that has had to be worn down to create all the sand on this planet.

[Dubbag]

And of note recently by the oil industry of recent...is that many fields are degrading quicker then thought....some fields in Arabia have been down graded substantially....oil migrates and can move.....The oil field itself is not an underground lake as envisaged by many but rather is a huge area of soft sand bearing structure which allows the hydrocarbons to nestle in the spaces between the spheroidal sand grains.....