Domain: tiger-web1.srvr.media3.us LA/Gulf Coast bouncing back from this mess | Page 2 | Oil Spill
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re: LA/Gulf Coast bouncing back from this mess

Posted on 5/21/10 at 12:53 pm to
Posted by Mudminnow
Houston, TX
Member since Aug 2004
34214 posts
Posted on 5/21/10 at 12:53 pm to
quote:

Saltwater intrusion? Not a chance


link?

Posted by Mudminnow
Houston, TX
Member since Aug 2004
34214 posts
Posted on 5/21/10 at 12:58 pm to
Regarding the "mosquito effect" Some of the peer reviewed papers indicate between 2 and 5% but Bob Mortone (U.S. Geological Survey) thinks its much higher. Most of the oil field acknowledge that they have caused landloss

LINK

quote:

He noticed that the highest rates of wetland loss occurred during or just after the period of peak oil and gas production in the 1970s and early 1980s. After much study, Morton concluded that the removal of millions of barrels of oil, trillions of cubic feet of natural gas, and tens of millions of barrels of saline formation water lying with the petroleum deposits caused a drop in subsurface pressure— a theory known as regional depressurization. That led nearby underground faults to slip and the land above them to slump. "When you stick a straw in a soda and suck on it, everything goes down," Morton explains. "That's very simplified, but you get the idea." The phenomenon isn't new:

"What I can tell you is that much of the loss between Bayou Lafourche and Bayou Terrebonne was caused by induced subsidence from oil and gas withdrawal. The wetlands are still there, they're just underwater." The area Morton refers to, part of the Barataria-Terrebonne estuary, has one of the highest rates of wetland loss in the state.
Posted by wilceaux
Austin, TX
Member since Apr 2004
13073 posts
Posted on 5/21/10 at 1:01 pm to
quote:

The wetlands are still there, they're just underwater.


I would chuckle at this, if it weren't so depressing.
Posted by htownjeep
Republic of Texas
Member since Jun 2005
7791 posts
Posted on 5/21/10 at 1:08 pm to
Good information minnow. Thanks.
Posted by oilfieldtiger
Pittsburgh, PA
Member since Dec 2003
2904 posts
Posted on 5/21/10 at 1:12 pm to
quote:

What I can tell you is that much of the loss between Bayou Lafourche and Bayou Terrebonne was caused by induced subsidence from oil and gas withdrawal.

just to be clear, the oil and gas we're talking about in this case was owned by the state of louisiana, w/ the state receiving the full royalty and tax payments - federal gov't wasn't involved.

from a regulatory standpoint, this falls under the juridiction of the state department of conservation.
Posted by CITWTT
baton rouge
Member since Sep 2005
31765 posts
Posted on 5/21/10 at 1:24 pm to
on both counts it is definitely true that offshore oil has had a deliterious effect on the coastline of Louisiana. If you want proof of that fact look at maps and photos of fifty year ago and compare them to present day images. The cutting of canals for pipelines opens more pathways for erosion of the coast, and also salt water intrusion which in turn kills the marsh grasses. Go take a chopper ride from Venice to Fourchon and look down at the pipelines and you will see it with your own eyes.
Posted by CrazyTigerFan
Member since Nov 2003
3572 posts
Posted on 5/25/10 at 12:10 am to
I should have quoted the specific part of what I was responding to (about the river levees causing erosion).

This whole thing has me tired, like after Katrina. But this is still just starting, and nothing can start to improve until after the well is capped.
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