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Gold/Mining/Energy : Big Dog's Boom Boom Room -- Ignore unavailable to you. Want to Upgrade?

To: kollmhn who wrote (135001)	6/15/2010 10:48:50 AM
From: ChanceIs	Respond to of 206209

>>>this cavern would not tend toward collapse until it has been appreciably drained<<< I would have to agree. I think that the greater concern would be that the area around the well bore would be subtended. I read ages ago that the floor of the North Sea might have dropped several feet as a result of the removal of all the oil. The North Sea oil is very shallow of course - completely different ball game. It might be possible to envision a bore hole scoured 30 yards in diameter down to the center of the earth.

To: kollmhn who wrote (135001)	6/15/2010 11:02:28 AM
From: not_prudent	Read Replies (1) \| Respond to of 206209

That sure is a big cavern. But I've read here so many times that hydrocarbons are contained in porous rocks NOT big caverns. Have all those prior posters been wrong or have I been misinterpreting them all this time? Personally, I like your version better - lots to get excited about.

To: kollmhn who wrote (135001)	6/15/2010 4:53:55 PM
From: Sweet Ol	1 Recommendation Read Replies (1) \| Respond to of 206209

Koll, you forgot porosity. The reservoir is not a big cavern containing oil and gas, like a storage cavern. Instead the hydrocarbons are contained in the pores of the reservoir rock. For example, if the porosity is 5% your size estimate is 20 times too small. Reservoir engineering is way more complicated, but this is just a simplified concept. Think of the reservoir as a sponge, only with much smaller pores. Think for a minute how strong the rocks have to be to hold up three miles of overburden and 1 mile of water. A cavern would have caved in millions of years ago. Blessings, JRH