Fracking: Meet the town that’s being swallowed by a sinkhole

[Saviolo]

I posted this in GD, too, but it really belongs here.

From the article on Grist:

Texas Brine’s operation sits atop a three-mile-wide, mile-plus-deep salt deposit known as the Napoleonville Dome, which is sheathed by a layer of oil and natural gas, a common feature of the salt domes prevalent in Gulf Coast states. The company specializes in a process known as injection mining, and it had sunk a series of wells deep into the salt dome, flushing them out with high-pressure streams of freshwater and pumping the resulting saltwater to the surface. From there, the brine is piped and trucked to refineries along the Mississippi River and broken down into sodium hydroxide and chlorine for use in manufacturing everything from paper to medical supplies.

What happened in Bayou Corne, as near as anyone can tell, is that one of the salt caverns Texas Brine hollowed out — a mine dubbed Oxy3 — collapsed. The sinkhole initially spanned about an acre. Today it covers more than 24 acres and is an estimated 750 feet deep. It subsists on a diet of swamp life and cypress trees, which it occasionally swallows whole. It celebrated its first birthday recently, and like most 1-year-olds, it is both growing and prone to uncontrollable burps, in which a noxious brew of crude oil and rotten debris bubbles to the surface. But the biggest danger is invisible; the collapse unlocked tens of millions of cubic feet of explosive gases, which have seeped into the aquifer and wafted up to the community. The town blames the regulators. The regulators blame Texas Brine. Texas Brine blames some other company, or maybe the regulators, or maybe just God.

Bayou Corne residents need only drive a quarter mile down Highway 70 to see the worst-case scenario. On Christmas Day 2003, a methane leak from a Napoleonville Dome salt cavern storing natural gas forced residents of Grand Bayou, a neighboring hamlet, to evacuate. Dow Chemical, which owned the cavern, bought out the mostly elderly residents, leaving only concrete slabs behind. In places like Barbers Hill, Texas, similar leaks have turned once-thriving neighborhoods into ghost towns. A 2001 cavern leak in Hutchinson, Kan., spewed 30-foot-tall geysers of gas and water and caused an explosion that left two people dead.

“I hate to say, but it’s not an unusual event,” says Robert Traylor, a geologist at the Railroad Commission of Texas, the state’s oil and gas regulator. “These things happen. In the oil business, a million things can go wrong, and they usually go wrong.”

And the corporations in charge are just passing the buck. Not that it would make much difference if they were indicted, because the maximum fines for destroying entire towns would likely be barely a blip in their bottom line.

Read the article here:
http://grist.org/business-technology/meet-the-town-thats-being-swallowed-by-a-sinkhole/

[Indydem]

1. This has nothing to do with fracking. n/t

[Saviolo]

2. The woman quoted...

...in the article works with Fracking and Injection Wells. It sounds like a remarkably similar mechanism to me. Injecting high pressure liquid. The big difference is that the injection well method dissolves the salt, forming a brine, whereas the fracking method breaks up the rock, forming a petrochemical slurry. Then those fluids are sent down a pipeline to be refined elsewhere. They both involve destabilizing the underlying rock layers.

Mea culpa, I shouldn't have put Fracking in the headline, since this is about brining and injection wells, but the content of the article remains unchanged w.r.t. companies irresponsibly undermining the surface around populated areas, then passing the buck.

[eppur_se_muova]

3. Oh, if only there were some other way to obtain salt ... nt