Showing posts with label Gulf Methane Concentrations. Show all posts
Showing posts with label Gulf Methane Concentrations. Show all posts

Sunday, July 11, 2010

Gulf Oil Update: Day 83

Editor's NOTE:

As regular readers are aware, this site has devoted a great deal of coverage recently to the Gulf Oil "Spill." In the past week I have provided a daily update in which hopefully the most informative pieces have been posted. It has been challenging to walk just the right line between on the one hand being alarmist and the other inappropriately optimistic especially since BP and the Obama administration have begun to seriously limit media access and investigation by scientists and other interested parties.

Some of the claims made by certain author's who allegedly have obtained "inside" information have been difficult to independently verify. The information contained on the separate "Gulf Oil Catastrophe Documented Effects Update" page HERE...represents what I believe has been established as fact. I do not include theories, hypotheses or speculation there.

Clearly, the ongoing contamination of the Gulf of Mexico with oil and gas is at a minimum a horrendous problem and could if not stopped become one of monumental proportions.

I encourage readers to send me any comments and reactions to what has been offered here vis a vis the Gulf Oil "Spill" and ask that anyone who has other anecdotal information or actual data to report send me an e-mail as directed under the communication section located on the right hand side of the site.

The following article is an example of a theory which I have been unable to independently validate. Note that the author makes multiple claims but does not reference them in the body of his piece.

--Dr. J. P. Hubert


____________


How the ultimate BP Gulf disaster could kill millions

by Terrence Aym
Helium

Disturbing evidence is mounting that something frightening is happening deep under the waters of the Gulf of Mexico—something far worse than the BP oil gusher.

Warnings were raised as long as a year before the Deepwater Horizon disaster that the area of seabed chosen by the BP geologists might be unstable, or worse, inherently dangerous. (Editor--a reference citation should have been included here)

What makes the location that Transocean chose potentially far riskier than other potential oil deposits located at other regions of the Gulf? It can be summed up with two words: methane gas.

The same methane that makes coal mining operations hazardous and leads to horrendous mining accidents deep under the earth also can present a high level of danger to certain oil exploration ventures.

Location of Deepwater Horizon oil rig was criticized

More than 12 months ago some geologists rang the warning bell that the Deepwater Horizon exploratory rig might have been erected directly over a huge underground reservoir of methane. (Editor--this claim sorely needs a reference citation)

Documents from several years ago indicate that the subterranean geologic formation may contain the presence of a huge methane deposit. (Editor--ditto)

None other than the engineer (Editor--what is his name and where did he allegedly make the following claim?) who helped lead the team to snuff the Gulf oil fires set by Saddam Hussein to slow the advance of American troops has stated that a huge underground lake of methane gas—compressed by a pressure of 100,000 pounds per square inch (psi)—could be released by BP's drilling effort to obtain the oil deposit.

Current engineering technology cannot contain gas that is pressurized to 100,000 psi.

By some (Editor--Who?) geologists' estimates the methane could be a massive 15 to 20 mile toxic and explosive bubble trapped for eons under the Gulf sea floor. In their opinion, the explosive destruction of the Deepwater Horizon wellhead was an accident just waiting to happen.

Yet the disaster that followed the loss of the rig pales by comparison to the apocalyptic disaster that may come.

A cascading catastrophe

According to worried geologists (Editor--name them), the first signs that the methane may burst its way through the bottom of the ocean would be fissures or cracks appearing on the ocean floor near the damaged well head.

Evidence of fissures opening up on the seabed have been captured by the robotic submersibles working to repair and contain the ruptured well. (Editor--I have been unable to find a reference that documents this claim) Smaller, independent plumes have also appeared outside the nearby radius of the bore hole itself. (Editor--I believe this has been established as fact)

According to some (Editor--again, who?) geological experts, BP's operations set into motion a series of events that may be irreversible. Step-by-step the drilling team committed one error after another.

Congressmen Henry Waxman, D-CA, and Bart Stupak, D-MI, in a letter sent to BP CEO Tony Hayward, identified 5 missteps made by BP during the period culminating with the explosion.

Waxman, chair of the Congressional energy panel and Stupak, the head of the subcommittee on oversight and investigations, said, "The common feature of these five decisions is that they posed a trade-off between cost and well safety."

The two Representatives also stated in the 14-page letter to Hayward that "Time after time, it appears that BP made decisions that increased the risk of a blowout to save the company time or expense."

Called by some insiders investigating the ongoing disaster a "perfect storm of catastrophe," the wellhead blew on the sea floor catapulting a stream of mud, oil and gas upwards at the speed of sound.

In describing the events—that transpired in a matter of seconds—they (Editor--Who?) note that immediately following the rupture the borehole pipe's casing blew away exposing a straight line 8 miles deep for the pressurized gas to escape. The result was cavitation, an irregular pressure variance sometimes experience by deep diving vessels such as nuclear submarines. This cavitation created a supersonic bubble of explosive methane gas that resulted in a supersonic explosion killing 11 men and completely annihilating the drilling platform.

Death from the depths

With the emerging evidence of fissures, the quiet fear now is the methane bubble rupturing the seabed and exploding into the Gulf waters. If the bubble escapes, every ship, drilling rig and structure within the region of the bubble will instantaneously sink. (Editor--Apparently fact since ships on the surface of the water would lose their bouyancy if that scenario occured) All the workers, engineers, Coast Guard personnel and marine biologists measuring the oil plumes' advance will instantly perish.

As horrible as that is, what would follow is an event so potentially horrific that it equals in its fury the Indonesian tsunami that killed more than 600,000, or the destruction of Pompeii by Mt. Vesuvius.

The ultimate Gulf disaster, however, would make even those historical horrors pale by comparison. If the huge methane bubble breaches the seabed, it will erupt with an explosive fury similar to that experienced during the eruption of Mt. Saint Helens in the Pacific Northwest. A gas gusher will surge upwards through miles of ancient sedimentary rock—layer after layer—past the oil reservoir. It will explode upwards propelled by 50 tons psi, burst through the cracks and fissures of the compromised sea floor, and rupture miles of ocean bottom with one titanic explosion.

The burgeoning methane gas cloud will surface, killing everything it touches, and set off a supersonic tsunami with the wave traveling somewhere between 400 to 600 miles per hour. (Editor--Several writers have said this on the internet but I have been unable to find a geologist who will go on the record and defend this contention)

While the entire Gulf coastline is vulnerable, the state most exposed to the fury of a supersonic wave towering 150 to 200 feet or more is Florida. The Sunshine State only averages about 100 feet above sea level with much of the coastline and lowlands and swamps near zero elevation.

Elevation Map:



A supersonic tsunami would literally sweep away everything from Miami to the panhandle in a matter of minutes. Loss of human life would be virtually instantaneous and measured in the millions. Of course the states of Texas, Louisiana, Mississippi, Alabama and southern region of Georgia—a state with no Gulf coastline—would also experience tens of thousands, if not hundreds of thousands of casualties.

Loss of property is virtually incalculable and the days of the US position as the world's superpower would be literally gone in a flash...of detonating methane.

Report about the Late Paleocene Thermal Maximum (LPTM), which occurred around 55 million years ago and lasted about 100,000 years. Large undersea methane caused explosions and mass extinctions.

This explores the controversial paper published by Northwestern University's Gregory Ryskin
. His thesis: the oceans periodically produce massive eruptions of explosive methane gas.

____________


George Noory Interview



Noory's guest argues that "independent geological scientists should be supplied with the Mocondo Well 'mud log data' in order to help predict what might transpire"

___________


Dying, dead marine wildlife paint dark, morbid picture of Gulf Coast following oil spill
BY Matthew Lysiak In Grand Isle, La. and Helen Kennedy
NEW YORK DAILY NEWS STAFF WRITERS

Originally Published:Wednesday, June 2nd 2010, 12:52 AM
Updated: Wednesday, June 2nd 2010, 5:44 PM


DelMundo for News Carcass of a decomposing dolphin on rocks at Queen Bess Island in Gulf of Mexico.


DelMundo for News A sign expressing hatred towards BP stands on the side of Highway 1 in Grand Isle.

Here's what President Obama didn't see when he visited the Gulf Coast: a dead dolphin rotting in the shore weeds.

"When we found this dolphin it was filled with oil. Oil was just pouring out of it. It was the saddest darn thing to look at," said a BP contract worker who took the Daily News on a surreptitious tour of the wildlife disaster unfolding in Louisiana.

His motive: simple outrage.

"There is a lot of coverup for BP. They specifically informed us that they don't want these pictures of the dead animals. They know the ocean will wipe away most of the evidence. It's important to me that people know the truth about what's going on here," the contractor said.

"The things I've seen: They just aren't right. All the life out here is just full of oil. I'm going to show you what BP never showed the President."

The day was 85 degrees, the blue sky almost white with sunshine, the air fresh with salt tang.

After checking that he was unobserved, he motored out to Queen Bess barrier island, known to the locals as Bird Island.

The grasses by the shore were littered with tarred marine life, some dead and others struggling under a thick coating of crude.

"When you see some of the things I've seen, it would make you sick," the contractor said. "No living creature should endure that kind of suffering."

Queen Bess Island was the first place where fledglings were born when the beloved, endangered Louisiana brown pelicans were reintroduced in the 1970s. Their population rebounded and was finally declared stabilized in 2002.

Now their future is once again in doubt. In what had been such an important hatchery, hundreds of pelicans - their white heads stained black - stood sentinel. They seemed slow and lethargic.

"Those pelicans are supposed to have white heads. The black is from the oil. Most of them won't survive," the contractor said.

"They keep trying to clean themselves. They try and they try, but they can't do it."

The contractor has been attempting to save birds and turtles.

"I saw a pelican under water with only its wing sticking out," he said. "I grabbed it and lifted it out of the water. It was just covered in oil. It was struggling so hard to survive. We did what we could for it.

"Nature is cruel, but what's happening here is crueler."

The uninhabited barrier islands are surrounded by yellow floating booms, also stained black, that are supposed to keep the oil out. It's not working.

"That grass was green a few weeks ago," the contractor said. "Now look. ... This whole island is destroyed. How do you write a check for something like this?"

He said he recently found five turtles drowning in oil.

"Three turtles were dead. Two were dying and not dead yet. They will be," he said.

As the boat headed back amid the choppy waves, a pod of dolphins showed up to swim with the vessel and guide it to land.

"They know they are in trouble. We are all in trouble," the contractor said.

BP's central role in the disaster cleanup has apparently given the company a lot of latitude in keeping the press away from beaches where the oil is thickest.

On Monday, a Daily News team was escorted away from a public beach on Elmer's Island by cops who said they were taking orders from BP.

BP spokesman Toby Odone denied the company is trying to hide the environmental damage; he noted BP has organized press visits to the spill zone and said BP cannot tell cops what to do.

The contractor for BP said the public needs to see the truth." (Editor's bold emphasis)

BP is going to say the deaths of these animals wasn't oil-related," he said. "We know the truth. I hope these pictures get to the right people - to someone who can do something."

Monday, July 5, 2010

Gulf Oil Update: Day 77

DK MataiChairman: mi2g, ATCA, The Philanthropia
Posted: June 21, 2010 05:45 AM
Huffington Post

Gulf Oil Gusher: Danger of Tsunamis From Methane?

A new and less well known asymmetric threat has surfaced in the Gulf of Mexico oil gusher. Methane or CH4 gas is being released in vast quantities in the Gulf waters. Seismic data shows huge pools of methane gas at the location immediately below and around the damaged "Macondo" oil well. Methane is a colourless, odourless and highly flammable substance which forms a major component in natural gas. This is the same gas that blew the top off Deepwater Horizon and killed 11 people. The "flow team" of the US Geological Survey estimates that 2,900 cubic feet of natural gas, which primarily contains methane, is being released into the Gulf waters with every barrel of oil. The constant flow of over 50,000 barrels of crude oil places the total daily amount of natural gas at over 145 million cubic feet. So far, over 8 billion cubic feet may have been released, making it one of the most vigorous methane eruptions in modern human history. If the estimates of 100,000 barrels a day -- that have emerged from a BP internal document -- are true, then the estimates for methane gas release might have to be doubled.


Tsunami: Low Probability High Impact Event
Warnings


Older documents indicate that the subterranean geological formation below the "Macondo" well in the Gulf of Mexico may contain the presence of a huge methane deposit. It has been a well known fact that the methane in that oil deposit was problematic. As a result, there was a much higher risk of a blow out. Macondo shares its name with the cursed town in the novel "One Hundred Years of Solitude" by the Nobel-prize winning writer Gabriel Garcia Marquez.

By some geologists' estimates, the methane could be a massive bubble trapped for thousands of years under the Gulf of Mexico sea floor. More than a year ago, geologists expressed alarm in regard to BP and Transocean putting their exploratory rig directly over this massive underground reservoir of methane. Warnings were raised before the Deepwater Horizon catastrophe that the area of seabed chosen might be unstable and inherently dangerous.

Methane and Poison Gas Bubble

The US Environmental Protection Agency (EPA) has found high concentrations of gases in the Gulf of Mexico area. The escape of other poisonous gases associated with an underground methane bubble -- such as hydrogen sulfide, benzene and methylene chloride -- have also been found. Recently, the EPA measured hydrogen sulfide at more than 1,000 parts per billion (ppb) -- well above the normal 5 to 10 ppb. Some benzene levels were measured near the Gulf of Mexico in the range of 3,000 to 4,000 ppb -- up from the normal 0 to 4 ppb. Benzene gas is water soluble and is a carcinogen at levels of 1,000 ppb according to the EPA. Upon using a GPS and depth finder system, experts have discovered a large gas bubble, 15 to 20 miles wide and tens of feet high, under the ocean floor. These bubbles are common. Some even believe that the rapid release of similar bubbles may have caused the sinking of ships and planes in the Bermuda Triangle.

50,000 to 100,000 PSI

The intractable problem is that this methane, located deep in the bowels of the earth, is under tremendous pressure. Experts agree that the pressure that blows the oil into the Gulf waters is estimated to be between 30,000 and 70,000 pounds per square inch (psi). Some speculate that the pressure of the methane at the base of the well head, deep under the ocean floor, may be as high as 100,000 psi -- far too much for current technology to contain. The shutoff valves and safety measures were only built for thousands of psi at best. There is no known device to cap a well with such an ultra high pressure.

Oxygen Depletion

The crude oil from the "Macondo" well, which is damaging the Gulf of Mexico, contains around 40 percent methane, compared with about 5 percent found in typical oil deposits. Scientists warn that gases such as methane, hydrogen sulfide and benzene, along with oil, are now depleting the oxygen in the water and are beginning to suffocate marine life creating vast "dead zones". As small microbes living in the sea feed on oil and natural gas, they consume large amounts of oxygen which they require in order to digest food, ie, convert it into energy. There is an environmental ripple effect: when oxygen levels decrease, the breakdown of oil can't advance any further.

Fissures or Cracks

According to geologists, the first signs that the methane may burst its way through the bottom of the ocean would be manifest via fissures or cracks appearing on the ocean floor near the path of least resistance, ie, the damaged well head. Evidence of fissures opening up on the seabed have been captured by the robotic midget submarines working to repair and contain the ruptured well. Smaller, independent plumes have also appeared outside the nearby radius of the bore hole. When reviewing video tapes of the live BP feeds, one can see in the tapes of mid-June that there is oil spewing up from visible fissures. Geologists are pointing to new fissures and cracks that are appearing on the ocean floor.

Fault Areas

The stretching and compression of the earth's crust causes minor cracking, called faults, and the bottom of the Gulf of Mexico has many such fault areas. Fault areas run along the Gulf of Mexico and well inland in Mexico, South and East Texas, Louisiana, Mississippi, Alabama and the extreme western Florida Panhandle. The close coupling of new fissures and cracks with natural fault areas could prove to be lethal.

Bubble Eruption

A methane bubble this large -- if able to escape from under the ocean floor through fissures, cracks and fault areas -- is likely to cause a gas explosion. With the emerging evidence of fissures, the tacit fear now is this: the methane bubble may rupture the seabed and may then erupt with an explosion within the Gulf of Mexico waters. The bubble is likely to explode upwards propelled by more than 50,000 psi of pressure, bursting through the cracks and fissures of the sea floor, fracturing and rupturing miles of ocean bottom with a single extreme explosion.

Cascading Catastrophe Scenarios

1. Loss of Buoyancy

Huge methane gas bubbles under a ship can cause a sudden buoyancy loss. This causes a ship to tilt adversely or worse. Every ship, drilling rig and structure within a ten mile radius of the escaping methane bubble would have to deal with a rapid change in buoyancy, causing many oil structures in its vicinity to become unstable and ships to sink. The lives of all the workers, engineers, coast guard personnel and marine biologists -- measuring and mitigating the oil plumes' advance and assisting with the clean up -- could be in some danger. Therefore, advanced safety measures should be put in place.

2. First Tsunami with Toxic Cloud

If the toxic gas bubble explodes, it might simultaneously set off a tsunami travelling at a high speed of hundreds of miles per hour. Florida might be most exposed to the fury of a tsunami wave. The entire Gulf coastline would be vulnerable, if the tsunami is manifest. Texas, Louisiana, Mississippi, Alabama and southern region of Georgia might experience the effects of the tsunami according to some sources.

3. Second Tsunami via Vaporisation

After several billion barrels of oil and billions of cubic feet of gas have been released, the massive cavity beneath the ocean floor will begin to normalise, allowing freezing water to be forced naturally into the huge cavity where the oil and gas once were. The temperature in that cavity can be extremely hot at around 150 degrees celsius or more. The incoming water will be vaporised and turned into steam, creating an enormous force, which could actually lift the Gulf floor. According to computer models, a second massive tsunami wave might occur.

Conclusion

The danger of loss of buoyancy and cascading tsunamis in the Gulf of Mexico -- caused by the release of the massive methane and poisonous gas bubble -- has been a much lower probability in the early period of the crisis, which began on April 20th. However, as time goes by and the risk increases, this low probability high impact scenario ought not to be ignored, given that the safety and security of the personnel involved remains paramount. Could this be how nature eventually seals the hole created by the Gulf of Mexico oil gusher?

References: (Google titles for details)

Methane-driven oceanic eruptions and mass extinctions

Active methane venting observed at giant pockmarks along the US mid-Atlantic shelf break HERE...

Analysis of methane and sulfate flux in methane-charged sediments from the Mississippi Canyon, Gulf of Mexico

Life at the edge of methane ice: microbial cycling of carbon and sulfur in Gulf of Mexico gas hydrates

Methane-induced dolomite "chimneys" on the Kuroshima Knoll, Ryukyu islands, Japan

Gas hydrates: past and future geohazard?

Solubility of crude oil in methane as a function of pressure and temperature

A review of methane and gas hydrates in the dynamic, stratified system of the Blake Ridge region, offshore southeastern North America

The Sissano, Papua New Guinea tsunami of July 1998 -- offshore evidence on the source mechanism

Tsunami deposits in the geological record

Tsunamis and Tsunami Sedimentology

Tsunami hazards in Europe

Nonlinear analysis on dynamic behavior of buoyancy-induced flame oscillation under swirling flow

The structure of buoyant methane and propane diffusion flames

Effects of temperature and wave conditions on chemical dispersion efficacy of heavy fuel oil in an experimental flow-through wave tank

Friday, June 18, 2010

Gulf oil full of methane, adding new concerns

Associated Press Writers Matthew Brown And Ramit Plushnick-masti,
– 2 hrs 29 mins ago

NEW ORLEANS – It is an overlooked danger in oil spill crisis: The crude gushing from the well contains vast amounts of natural gas that could pose a serious threat to the Gulf of Mexico's fragile ecosystem.

The oil emanating from the seafloor contains about 40 percent methane, compared with about 5 percent found in typical oil deposits, said John Kessler, a Texas A&M University oceanographer who is studying the impact of methane from the spill.

That means huge quantities of methane have entered the Gulf, scientists say, potentially suffocating marine life and creating "dead zones" where oxygen is so depleted that nothing lives.

"This is the most vigorous methane eruption in modern human history," Kessler said.

Methane is a colorless, odorless and flammable substance that is a major component in the natural gas used to heat people's homes. Petroleum engineers typically burn off excess gas attached to crude before the oil is shipped off to the refinery. That's exactly what BP has done as it has captured more than 7.5 million gallons of crude from the breached well.

A BP spokesman said the company was burning about 30 million cubic feet of natural gas daily from the source of the leak, adding up to about 450 million cubic feet since the containment effort started 15 days ago. That's enough gas to heat about 450,000 homes for four days.

But that figure does not account for gas that eluded containment efforts and wound up in the water, leaving behind huge amounts of methane.

BP PLC said a containment cap sitting over the leaking well funneled about 619,500 gallons of oil to a drillship waiting on the ocean surface on Wednesday. Meanwhile, a specialized flare siphoning oil and gas from a stack of pipes on the seafloor burned roughly 161,700 gallons.

Thursday was focused on Capitol Hill, where lawmakers chastised BP CEO Tony Hayward.

Testifying as oil still surged into the Gulf at between 1.47 million and 2.52 million gallons a day, coating more coastal land and marshes, Hayward declared "I am so devastated with this accident," "deeply sorry" and "so distraught."

But he also said he was out of the loop on decisions at the well and disclaimed knowledge of any of the myriad problems on and under the Deepwater Horizon rig before the deadly explosion. BP was leasing the rig the Deepwater Horizon that exploded April 20, killing 11 workers and triggering the environmental disaster.

"BP blew it," said Rep. Bart Stupak, D-Mich., chairman of the House investigations panel that held the hearing. "You cut corners to save money and time."As for the methane, scientists are still trying to measure how much has escaped into the water and how it may damage the Gulf and it creatures.

The dangerous gas has played an important role throughout the disaster and response. A bubble of methane is believed to have burst up from the seafloor and ignited the rig explosion. Methane crystals also clogged a four-story containment box that engineers earlier tried to place on top of the breached well.

Now it is being looked at as an environmental concern.

The small microbes that live in the sea have been feeding on the oil and natural gas in the water and are consuming larger quantities of oxygen, which they need to digest food. As they draw more oxygen from the water, it creates two problems. When oxygen levels drop low enough, the breakdown of oil grinds to a halt; and as it is depleted in the water, most life can't be sustained.

The National Science Foundation funded research on methane in the Gulf amid concerns about the depths of the oil plume and questions what role natural gas was playing in keeping the oil below the surface, said David Garrison, a program director in the federal agency who specializes in biological oceanography.

"This has the potential to harm the ecosystem in ways that we don't know," Garrison said. "It's a complex problem."

In early June, a research team led by Samantha Joye of the Institute of Undersea Research and Technology at the University of Georgia investigated a 15-mile-long plume drifting southwest from the leak site. They said they found methane concentrations up to 10,000 times higher than normal, and oxygen levels depleted by 40 percent or more.

The scientists found that some parts of the plume had oxygen concentrations just shy of the level that tips ocean waters into the category of "dead zone" — a region uninhabitable to fish, crabs, shrimp and other marine creatures.

Kessler has encountered similar findings. Since he began his on-site research on Saturday, he said he has already found oxygen depletions of between 2 percent and 30 percent in waters 1,000 feet deep.

Shallow waters are normally more susceptible to oxygen depletion. Because it is being found in such deep waters, both Kessler and Joye do not know what is causing the depletion and what the impact could be in the long- or short-term.

In an e-mail, Joye called her findings "the most bizarre looking oxygen profiles I have ever seen anywhere."
Representatives of the National Oceanic and Atmospheric Administration acknowledged that so much methane in the water could draw down oxygen levels and slow the breakdown of oil in the Gulf, but cautioned that research was still under way to understand the ramifications.

"We haven't seen any long-term changes or trends at this point," said Robert Haddad, chief of the agency's assessment and restoration division.

Haddad said early efforts to monitor the spill had focused largely on the more toxic components of oil. However, as new data comes in, he said NOAA and other federal agencies will get a more accurate read on methane concentrations and the effects.

"The question is what's going on in the deeper, colder parts of the ocean," he said. "Are the (methane) concentrations going to overcome the amount of available oxygen? We want to make sure we're not overloading the system." BP spokesman Mark Proegler disputed Joye's suggestion that the Gulf's deep waters contain large amounts of methane, noting that water samples taken by BP and federal agencies have shown minimal underwater oil outside the spill's vicinity.

"The gas that escapes, what we don't flare, goes up to the surface and is gone," he said.

Steven DiMarco, an oceanographer at Texas A&M University who has studied a long-known "dead zone" in the Gulf, said one example of marine life that could be affected by low oxygen levels in deeper waters would be giant squid — the food of choice for the endangered sperm whale population. Squid live primarily in deep water, and would be disrupted by lower oxygen levels, DiMarco said.