>.OIL...mrLanman thats music to our ears...this resource will trump the trumpers...gas and oil...did we mention there just might be lots of both

Perhaps. The general theory though is that most of the free flowing oil either went downwards, or migrated to the outer edges of the trough. Here's a 1988 article that I 'translated' to make it easier to understand.

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The Pannonian Basin: A Study in Basin Evolution

Chapter 25

Maturation and Migration of Hydrocarbons in the Southeastern Pannonian Basin

In the HOD-1 well, rocks are currently normally compacted from the surface down to 2.8 km depth. Below 2.8 km, the rocks are overpressured and have porosities in excess of the normal porosity depth values. The present pressure seals (the first between 4.9 and 5.1 km depth, the second between 4.1 and 4.2 km depth, and the third between 3.9 and 4.0 km depth) already existed 2.4 million years ago. However, 8 million years ago only the lower one was developed at a depth of 3.2 km. Ten million years ago the pressure of the pore fluid was normal all along the section.

The timing of the formation of such pressure seals influences the migration of hydrocarbons. If the pressure seal forms before maturation of the hydrocarbons in the underlying rocks, migration can only occur downward or laterally.

The lowermost part of the Basal Conglomerate passed into the oil generation window 9.5 million years ago. The uppermost part of this unit passed out of oil generation window 2.3 million years ago. According to our basin reconstruction, however, a pressure seal currently at about 5 km depth was formed at a depth of 2.7 km at 9.3 million years ago. This pressure seal hampered upward migration during the time of oil generation in the Endrod source rocks. Accordingly, migration could occur only horizontally and downwards. Horizontal migration is, however, less efficient . Downward migration followed by lateral migration was probably promoted by the permeable zones at the unconformity along the basement or at the top of the Basal Conglomerate. The migration from the Endrod down toward the basement may be favorable for hydrocarbon accumulation in deeper parts of depressions.

A lesser volume of potential source rocks (Szolnok) has always remained above this pressure seal. Migration out of these rocks may have been upward into the permeable Algyo formation, and then laterally updip within the Algyo formation. These hydrocarbons may have accumulated in structural traps adjacent to basement highs. Traps of this type contain most of the oil found to date in Hungary

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