BP’s Lies About Methane And Oil Plumes Exposed

  Posted by - June 22, 2010 at 11:28 am - Permalink - Source via Alexander Higgins Blog
Deepwater Blowout Oil Plume Simulation
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Calling out BP on their outright lies has become an exercise in futility.

It seems that Government, and at points the media, is just as happy to mindlessly echo the massive campaign of disinformation being dished out by BP as if it were absolute fact.

That would signify that it is time to change gears and go after the press for continuing to disservice the public by publishing BP’s lip service.

The press needs to be held to standard of journalistic integrity that scolds them for publishing information released by BP without vetting that information first.

In my last post, Sea Life Flocks To Coast To Avoid The BP Gulf Oil Spill As Millions of Dead Fish Float Ashore, I did just that.

In that post the Associated Press labeled the mass exodus of deep sea life swarming to clean shallow coastal waters in order to avoid the oil, methane and toxic dispersants as both strange and unusual.

I find nothing strange or unusual about helpless sea life fleeing toxic waters in order to survive.

Now we have the the latest round of lies coming from BP.

They are denying the existence of plumes of methane that scientists are now finding all over the Gulf of Mexico in concentrations up to 10,000 times higher than normal.

The headlines currently in the press about these methane plumes are smack full of the same story line that was floating around in the media when scientists first reported that they discovered the underwater plumes of oil which where unsurprisingly denied by both BP and the Federal Government.

Case in point, on June 18th the AP released a story about the massive amounts of methane now being found in the Gulf and reported that scientists are warning that natural gas found at these concentrations border the levels that create  “dead zones”  where aquatic life can not survive.

Once again the press watered down the presence of such high levels of methane that scientists are calling “the most vigorous methane eruption in modern human history”.

We now know that the release of high levels of methane was responsible for the extinction of the dinosaurs yet the associated press allows BP to deny existence of methane and that it is coming from the leaking Macondo well with no further investigation into BP’s denial.

BP told the Associated Press “The gas that escapes, what we don’t flare, goes up to the surface and is gone” and further stated the data collected by BP and the Federal Government does not indicate high levels of methane being found in the Gulf of Mexico.

Yet anyone watching the BP live spill cam can see that their are massive amounts of methane being released from the gushing well and none of that gas can be seen bubbling from the surface as BP claims.

If this where a blowout in shallow water, like the 1993 Actinia blowout in Vietnam, then the methane would indeed reach the surface and we would also see massive bubbles escaping into the air just like we did during the Actinia blowout.

Observe for yourself. Go to around 1:45 in the video of the blowout below and see exactly what happens when released methane surfaces.

It is interesting note that we observe no such phenomenon from the BP Gulf Oil Leak.

To the contrary, it is well known to BP, the press, and the Federal government that methane gas when released from deep water blowout like the one we are experiencing now does not make it to the surface.

But don’t just take my word for it, I refer you to a study performed in 2000 by the Federal Government and many oil companies, including BP,  showing that when methane gas is released in blowouts deeper than 800 meters the methane is entirely absorbed into the water column before it can surface.

While the Associated Press was made made aware of this study when BP and the Federal Government first denied the existence of underwater plumes of oil they fail to mention the study in their news article and instead choose to allow BP to continue lying to the public.

To be fair, the press is trying in presenting both sides of the story by including BP’s comments.

But the failure to mention this study and the fact that it is widely known that the statements being made by BP are outright lies only aids BP in covering up of the true extent of damage from the public.

It also prevents the dangers being presented by this catastrophe from being handled appropriately.

The Truth About Underwater Plumes Of Oil and Methane

The study called  Project “Deep Spill” was first a black eye for BP and the Federal Government when they claimed it didn’t make sense that there where huge plumes oil floating in the ambient currents beneath the surface of the sea because as they put it “oil floats”.

Project “Deep Spill” is now hitting them with another black eye and debunks the lie that the methane gas being released from the well is floating to the surface and not being absorbed into the sea.

The study analyzed a wide range of controlled releases at different depths below the sea surface of different types of oil found all over world to help better understand the flow of hydrocarbons released from a deepwater blowout.

One of the studies, called DeepBlow, released 10,000 barrels of oil per day at a depth of 800 meters which is less than half of the depth of the Deepwater Horizon blowout.

The basic findings of that study has been recreated by scientists from the University of North Carolina.

In their research the scientists simulated of the formation of the underwater oil plumes that are created during deepwater blowouts.

Watch The University of North Caroline Simulation Shows How Oil Released Underwater Forms Plumes

While the University of North Carolina simulation gives you a basic understanding of how deepwater blowouts create oil plumes it does not fully account for all the findings of Project “Deep Spill”.

In particular the final report of Project “Deep Spill” found:

  1. Only 2% of the oil released in a deepwater blowout may actually make it to the surface. That’s as little as 2% naturally without the use of dispersants. Add dispersants into the equation and it could be less then one percent of oil that makes it to the surface.
  2. None of the methane released from the deepwater blowout made it to the surface. The study found that released natural gas may dissolve completely within the water column if it is released from a deep enough depth relative to the gas flow rate.

    From the study of the 800 meter release:

    Echo sounders provided efficient tracking of oil and gas releases in the field and showed that the gas was completely dissolved before it could surface.

    DeepBlow does not include hydrate kinetics, and hence, under hydrate forming conditions, the model predicts solid hydrate particles. Not only is the mass transfer from such particles slower than from gas bubbles, but also hydrate density is closer to that of water than that of natural gas, substantially reducing plume buoyancy.

  3. The buoyant parts of the oil released in a deepwater blowout split from the main plume within the first 200 meters of release. Those buoyant parts, which represent only a small portion of the total amount of oil, turn into small droplets that float to the surface.

    Here is a graph from the study showing this process.

    Deepwater oil release - Buoyancy particle separation graph
    Deepwater oil release – Buoyancy particle separation graph

    Here is an image that captures the separation process

    Deepwater oil release - Buoyancy particle separation simulation
    Deepwater oil release – Buoyancy particle separation simulation
  4. Within the first 100 to 200 meters from the source of the release the the majority of the oil loses its buoyancy and stops rising. This majority of the oil remains submerged in an underwater plume that is then carried away by subsurface currents.
    Deepwater oil plumes lose buoyancy within the first few couple hundred meters from release
    Deepwater oil plumes lose buoyancy within the first few couple hundred meters from release
  5. Oil plumes released from deepwater plumes can travel for long distances. It is uncertain if or where they will surface unless they are tracked.
    Deepwater oil plumes travel for long distances
    Deepwater oil plumes travel for long distances
  6. A snippet from the study:

    Based on the models, the experimental studies described in Section 2 and, to a limited extent, the DeepSpill experiment described in Section 3, an accidental release of oil and/or natural gas obeys the following staged pattern. Near the release, oil, gas and entrained seawater rise as a coherent buoyant plume. A few meters above a point-source release, ambient conditions begin to affect the plume: crossflows cause the plume to deflect in the downstream direction and stratification retards the upward plume motion by entrainment of ambient seawater. For cases similar to the DeepSpill experiment, at a height of order 100 m, these ambient effects arrest the plume, and cause the entrained seawater and the dispersed phases to separate. The arrest takes the form of a completely bent over plume in the case of a strong crossflow, or a trap height and intrusion in the case of a stratification dominated plume. At this terminal level, there is rapid spreading, either by advection from the crossflow or gravitational collapse of the intrusion layer, and the oil is distributed over a wide area. Above this trapping zone, the oil rises as individual droplets.

Here are the portions of the original AP article pertaining to the findings of the independent scientific community.

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.

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.”

It then goes onto water down the findings of the scientific community with the official response of the Federal Government and the response of BP.

In particular the response from the Federal Government was:

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.”

And the response from BP was:

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.

Dylan Ratigan Reports On Plume Tracking Aboard NOAA Ship The Thomas Jefferson With Captain Shepard Smith


 

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