Showing posts with label underground blowout. Show all posts
Showing posts with label underground blowout. Show all posts

Tuesday, April 19, 2011

BP's Secret Deepwater Blowout, another one...

Tuesday 19 April 2011
by Greg Palast, Truthout and Buzzflash


Only 17 months before BP's Deepwater Horizon rig suffered a deadly blowout in the Gulf of Mexico, another BP deepwater oil platform also blew out.

You've heard and seen much about the Gulf disaster that killed 11 BP workers. If you have not heard about the earlier blowout, it's because BP has kept the full story under wraps. Nor did BP inform Congress or US safety regulators, and BP, along with its oil industry partners, have preferred to keep it that way.

The earlier blowout occurred in September 2008 on BP's Central Azeri platform in the Caspian Sea.

As one memo marked "secret" puts it, "Given the explosive potential, BP was quite fortunate to have been able to evacuate everyone safely and to prevent any gas ignition." The Caspian oil platform was a spark away from exploding, but luck was with the 211 rig workers.

It was eerily similar to the Gulf catastrophe as it involved BP's controversial "quick set" drilling cement.

The question we have to ask: If BP had laid out the true and full facts to Congress and regulators about the earlier blowout, would those 11 Gulf workers be alive today - and the Gulf Coast spared oil-spill poisons?

The bigger question is, why is there no clear law to require disclosure? If you bump into another car on the Los Angeles freeway, you have to report it. But there seems no clear requirement on corporations to report a disaster in which knowledge of it could save lives.

Five months prior to the Deepwater Horizon explosion, BP's Chief of Exploration in the Gulf, David Rainey, testified before Congress against increased safety regulation of its deepwater drilling operation. Despite the company's knowledge of the Caspian blowout a year earlier, the oil company's man told the Senate Energy Committee that BP's methods are, "both safe and protective of the environment."

Really? BP's quick-dry cement saves money, but other drillers find it too risky in deepwater. It was a key factor in the Caspian blowout. Would US regulators or Congress have permitted BP to continue to use this cement had they known? Would they have investigated before issuing permits to drill?

This is not about BP the industry Bad Boy. This is about a system that condones silence, the withholding of life-and-death information.

Even BP's oil company partners, including Chevron and Exxon, were kept in the dark. It is only through WikiLeaks that my own investigations team was able to confirm insider tips I had received about the Caspian blowout. In that same confidential memo mentioned earlier, the US Embassy in Azerbaijan complained, "At least some of BP's [Caspian] partners are similarly upset with BP's performance in this episode, as they claim BP has sought to limit information flow about this event even to its [Caspian] partners."

In defense of its behavior, BP told me it did in fact report the "gas release" to the regulators of Azerbaijan. That's small comfort. This former Soviet republic is a police state dictatorship propped up by the BP group's oil royalties. A public investigation was out of the question.

In December, I traveled to Baku, Azerbaijan's capital, to investigate BP and the blowout for British television. I was arrested, though, as a foreign reporter, quickly released. But my eye witnesses got the message and all were too afraid tell their stories on camera.

BP has, in fact, never admitted a blowout occurred, though when confronted by my network, did not deny it. At the time, BP told curious press that the workers had merely been evacuated as a "precaution" due to gas bubbles "in the area of" the drilling platform, implying a benign natural gas leak from a crack in the sea floor, not a life-threatening system failure.

In its 2009 report to the US Securities and Exchange Commission (SEC), BP inched closer to the full truth. Though not mentioning "blowout" or "cement," the company placed the leak "under" the platform.

This points to a cruel irony: the SEC requires full disclosure of events that might cause harm to the performance of BP's financial securities. But reporting on events that might harm humans? That's not so clear.

However, the solution is clear as could be. International corporations should be required to disclose events that threaten people and the environment, not just the price of their stock.

As radiation wafts across the Pacific from Japan, it is clear that threats to health and safety do not respect national borders. What happens in Fukushima or Baku affects lives and property in the USA.

"Regulation" has become a dirty word in US politics. Corporations have convinced the public to fear little bureaucrats with thick rulebooks. But let us remember why government began to regulate these creatures. As Andrew Jackson said, "Corporations have neither bodies to kick nor souls to damn."

Kicking and damning have no effect, but rules do. And after all, when international regulation protects profits, as in the case of patents and copyrights, corporate America is all for it.

Sunday, July 11, 2010

The BP Doomsday Scenario

by Krell on MADMIKE'S America

The reserve that BP drilled into with the Deep Water Horizon project taps a HUGE, HUGE, amount of oil. Current estimates are running about 15 billion barrels of oil and TRILLIONS of cubic feet of methane.

In this reserve, the pressure is running at around 120,000 PSI. The pressure down 2.4 miles below the ocean floor, inside that reserve, is 120 thousand pounds of force every square inch.

2.4 miles of rock and earth was keeping all that pressure bottled up. Mother Nature had everything at a nice stable balanced point.

When BP drilled down to this reservoir with a 21″ bore pipe, releasing this pressure to the ocean floor surface at the wellhead, they were maintaining a pressure of around 12,000 PSI at the wellhead until it exploded. The explosion severely compromised the integrity of the wellhead and destroyed the feed from the wellhead to the oceans surface, causing several leaks in the feed line.

Later, to try to contain the leak, they attempted the procedure known as Top-kill, where they inject drilling mud into the well head side ports and down into the borehole.

Some experts are speculating now, based on the short amount of time that was spent with the Top-kill procedure, that pressures involved along with the mud injection actually caused damage to the wellbore casings. This is the liner of the borehole that is going to the oil reservoir.

If the casing is damaged, then it is a problem of hellish proportions. It far exceeds the problems of the leak that is happening now.

To explain the problem, think of those pressures. At the surface you have the 12,000 PSI and in the reservoir, it is the staggering 120,000 PSI. That is an enormous pressure differential looking to finding a way to equal out.

The bore pipe casing is what keeps the integrity of the bore path by withstanding that enormous pressure. If that is gone, the pressure at the reservoir is going to start forcing its way up, flaring out the bore diameter as it climbs.

As it flares out the borehole diameter, the pressure at the top of the flare increases exponentially, eating away at the borehole faster and faster. By the time the relief well reaches the intersection point at 1 and 3/4 miles down, the diameter at that point of the borehole may be huge, tens of feet in a flared shape. This means the relief wells will not be able to stop it.


What is worse is that the pressure will keep on climbing up the bore hole until all that pressure will burst out at the ocean floor. Trillions of cubic feet of methane would vent at sea level at that point, expanding 30 times its original frozen state. This would most likely ignite.

In addition, 15 BILLION barrels of oil would be released in one instant, along with all that methane. It is not even conceivable in the mind what that would do to the planet.

Another scenario is that borehole would naturally cave in on itself at some point, causing the slower release of oil over a long period of time. Estimates are running as long as 30 years. This would be a unstoppable leak, because it would be coming up through the thousands of fissures, driven by all that pressure.

Thousands of leaks spread out over a wide acreage of ocean floor spread out over 30 years or instant Armageddon. End results will be the same.

During a interview with a veteran engineer who writes for a prestigious UK oil trade journal:
The real doomsday scenario here… is if that casing gives up, and it does come through the other strings of pipe. Remember, it is concentric pipe that holds this well together. If it comes into the formation, basically, you‘ve got uncontrolled [oil] flow to the sea floor. And that is the doomsday scenario.