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Tens Of Billions Of Additional Barrels Of Oil Remain To Be Tapped Miles Below Gulf Of Mexico
Science Daily ^ | 3-31-2003 | Cornell University

Posted on 03/31/2003 4:10:37 PM PST by blam

Source: Cornell University News Service
Date: 2003-03-31

Tens Of Billions Of Additional Barrels Of Oil Remain To Be Tapped Miles Below Gulf Of Mexico, Cornell Geologist Says

NEW ORLEANS -- U.S. reliance on foreign oil production could be reduced by chemically mapping the subsurface streams of hydrocarbons, amounting to tens of billions of barrels, hidden well below the Gulf of Mexico, says a Cornell University geologist.

These untapped oil and gas reserves can be found by matching hydrocarbon chemical signatures with geologic models for stratigraphic layers under the sea floor, says Lawrence M. Cathles, a professor of chemical geology at Cornell in Ithaca, N.Y.

"The undiscovered gas and oil potential of the Gulf of Mexico is very large," says Cathles. "We have produced only a small fraction, and the deep-water potential for finding more there is big. In terms of potential, it is bigger than the North Sea. It's about a big a deal as there is."

Cathles will present his findings in a talk, "Massive Hydrocarbon Venting with Minor, Constantly Replenished (Flow-Through) Retention in a 100 x 200 km Area Offshore Louisiana Gulf of Mexico," at the 225th national meeting of the American Chemical Society in New Orleans at 1:30 p.m. CST on March 27.

The northern Gulf of Mexico basin is one of the world's most active areas of hydrocarbon exploration. A study of an area of about 9,500 square miles, found that hydrocarbons currently are being naturally generated from strata deposited during the Tertiary and Jurassic periods, miles below the sea floor. Hydrocarbons are leaking through natural vents at hundreds of locations, and these vent sites have been visited and studied by Cathles and other researchers using small submarines. What makes this area offshore of Louisiana important is the presence of two types of hydrocarbon deep below the gulf floor: the deeper, early-maturing Jurassic and the later-maturing Tertiary. Each has a distinctive chemistry. As these sources mature, the hydrocarbons migrate upward toward the surface through what can be thought of as a myriad of small streams and ponds, much like a natural water system. Just how much liquid hydrocarbon is retained within this subsurface network is a matter of crucial interest, Cathles says.

More than 70 percent of the hydrocarbons that have been naturally generated have made their way upward through the vast network of streams and ponds and vented into the ocean. The hydrocarbons are digested by bacteria, which then become food for the gulf's marine life. The earlier-generated, sulfur-rich, carbonate-sourced Jurassic hydrocarbons are replaced by the shallower, later-generated, shale-sourced Tertiary hydrocarbons which fill the producing reservoirs in the northern part of the study area. This displacement of Jurassic by Tertiary oil provides geologists with a measure of the remaining untapped oil and gas below the gulf's floor.

The hydrocarbons hidden within the subsurface ponds and streams are about 8 to 10 percent of the Gulf of Mexico's total hydrocarbons. In the study area this represents about 60 billion barrels of oil and 370 trillion cubic feet of gas and is the hydrocarbon that could be extracted, Cathles says. (The remaining hydrocarbons, about 20 percent, stay stored in the source strata.)

Cathles says that the telltale chemistry of the hydrocarbons reflects the streams and ponds through which they migrated, and thus could point to the ponds that remain to be discovered and produced. Ultimately he hopes that looking at the hydrocarbon chemistry in this new way could provide geologists with accurate information on the presence and size of the deeper reservoirs. He says: "By combining chemical data from currently producing reservoirs with seismic images of the subsurface using computer migration models, drilling for new deep reservoirs can be facilitated."

Funding for the research was provided by the Gas Research Institute in a joint project with the Woods Hole Oceanographic Institution.


TOPICS: News/Current Events
KEYWORDS: barrels; billions; energylist; gulf; mexico; oil; tens
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1 posted on 03/31/2003 4:10:37 PM PST by blam
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Comment #2 Removed by Moderator

To: blam
Northern Gulf of Mexico... offshore of Louisiana

Using UN logic, this would be divided up half and half between Mexico and France ;-)

3 posted on 03/31/2003 4:14:35 PM PST by struwwelpeter (k chertovoy materi s pesimistami! pobeda blizko!)
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To: curiouskiwi
The northern Gulf of Mexico basin is USA waters...or at least closer to us than Mexico, so as to divert any claims.
4 posted on 03/31/2003 4:15:47 PM PST by xrp
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To: blam
DRILLING SHIPS AHOY!

DRILL DRILL DRILL, and then DRILL some more!

5 posted on 03/31/2003 4:16:58 PM PST by The KG9 Kid
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To: curiouskiwi
yesterday......but the goobermint doesn't know it yet!!! shhhhhhhh!!!!!!
6 posted on 03/31/2003 4:17:54 PM PST by cajun-jack
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To: curiouskiwi
And Louisiana will welcome the activity.

This ain't California down here.

7 posted on 03/31/2003 4:17:58 PM PST by sinkspur
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To: blam
Cathles says that the telltale chemistry of the hydrocarbons reflects the streams and ponds through which they migrated, and thus could point to the ponds that remain to be discovered and produced.

Oil doesn't migrate through "streams" or collect in "ponds." Maybe they dumbed this down for the general public, but it's grossly misleading and casts doubts on the seriousness of this study.

8 posted on 03/31/2003 4:19:04 PM PST by Dog Gone
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Comment #9 Removed by Moderator

To: curiouskiwi
So when is the USA going to declare war on Mexico???

Can't do that. Without Mexicans, we'd have to work the packing plants ourselves, or hire Canadians. And just who would mow these 4-acre yards everyone's got nowadays?


10 posted on 03/31/2003 4:20:01 PM PST by struwwelpeter (k chertovoy materi s pesimistami! pobeda blizko!)
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To: blam
deep-water potential = $$$$
11 posted on 03/31/2003 4:20:21 PM PST by HoustonCurmudgeon (Compassionate Conservative Curmudgeon)
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To: blam
Maybe you could angle you a pipe down in your backyard?
12 posted on 03/31/2003 4:20:38 PM PST by Hanging Chad (not to be confused with "Hanging Ten" or "Hanging Wallpaper"...)
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To: struwwelpeter
Uhm, maybe you could just link to gross pics instead of slapping them in a thread?
13 posted on 03/31/2003 4:22:11 PM PST by xrp
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To: xrp
That picture isn't "gross".
14 posted on 03/31/2003 4:24:18 PM PST by AM2000
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To: AM2000
I guess it's a matter of opinion.
15 posted on 03/31/2003 4:27:36 PM PST by xrp
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To: blam
There is also a large reserve in the Aegean ocean in the mediteranian.
16 posted on 03/31/2003 4:30:06 PM PST by longtermmemmory
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To: curiouskiwi
1846 and we kicked their butts.

Of course the Aztlan are planning "reconquista", so we might have to go through the drill again.

17 posted on 03/31/2003 4:30:25 PM PST by Tijeras_Slim
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To: blam
Perhaps this has something to do with the favors Bush has been doing for Vicente Fox.....?
18 posted on 03/31/2003 4:30:39 PM PST by Lizavetta
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To: Lizavetta
Nah, the oil is ours by the nature of one simple fact, Mexico does not have the capabilities to retrieve it.
19 posted on 03/31/2003 4:34:49 PM PST by Truthsearcher
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To: curiouskiwi
This part of the 'Gulf of MExico'doesn't belong to Mexico - yet.

20 posted on 03/31/2003 4:37:52 PM PST by nanny
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