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Chesapeake Energy Well Blowout in Wyoming Causes Evacuation, Methane 'Roared' for Days
A potentially dangerous oil well blowout at a Chesapeake Energy site in Wymoing caused at least 60 and perhaps 70 residents to evacuate within 5 miles of the disaster for several days until it was contained earlier today. Chesapeake Energy (NYSE: CHK) was drilling the well in the Niobrara Shale region underlying parts of Wyoming, Colorada and Nebraska.
"Potentially explosive methane gas roared from the ground at the site five miles northeast of the town of Douglas," the AP reported.
Residents reported hearing the roar of escaping gas six miles away.
The blowout occurred Tuesday afternoon at Chesapeake's Combs Ranch Unit well site. However, workers were unable to plug the well with drilling mud until today due to shifting winds that made the site too dangerous to attempt the now infamous "Top Kill" technique. Halliburton subsidiary Boots & Coots workers were able to shove enough mud and other materials into the well to finally stop the methane gas leaking out of the well today.
Chesapeake had to resort to the "Top Kill" technique last year at a Pennsylvania gas fracking well blowout. In that case, Chesapeake used a junk shot of “a mix of plastic, ground up tires and heavy mud to plug the well.”
The Wyoming incident occured following completion of horizontal drilling, a precursor to the hydraulic fracturing (fracking) of the well, which would've occured in the coming weeks, according to local press accounts.
Once again, the failure appears tied to a faulty casing job. The Douglas Budget reports that, "the horizontal part of the drilling had been completed. The drillers pulled out the bit and were going to run the casing into the horizontal leg of the well."
That's when the blowout occurred, apparently.
Tom Doll, a Wyoming State Oil and Gas supervisor, told local press that the state had no idea how much methane gas had spewed into the air following the blowout, and would rely on Chesapeake to supply an answer.
“It’s bad for the air quality, there’s no doubt,” Doll said. “But we have no idea yet an estimate of how much gas is being released. We’re expecting Chesapeake to be estimating that.”
Anybody see anything potentially wrong with relying on the company responsible for a disaster to estimate the amount of pollution released from it? I'm sure the company will be perfectly honest and transparent about this, right?
Reposted with permision from DeSmogBlog.
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Farms with just one or a handful of different crops encourage fewer species of pollinating and pest-controlling insects to linger, ultimately winnowing away crop yields, according to a new study.
Up to half of the detrimental impacts of the "landscape simplification" that monocropping entails come as a result of a diminished mix of ecosystem service-providing insects, a team of scientists reported Oct. 16 in the journal Science Advances.
Monocrop palm oil plantation Honduras.
SHARE Foundation / Flickr / CC BY-NC 2.0
"Our study shows that biodiversity is essential to ensure the provision of ecosystem services and to maintain a high and stable agricultural production," Matteo Dainese, the study's lead author and a biologist at Eurac Research in Bolzano, Italy, said in a statement.
It stands to reason that, with declines in the sheer numbers of insects that ferry pollen from plant to plant and keep crop-eating pests under control, these services will wane as well. But until now, it hasn't been clear how monocultures affect the number and mix of these species or how crop yields might change as a result.
Aiming to solve these questions, Dainese and his colleagues pulled together data from 89 studies cutting across a variety of landscapes, from the tropics of Asia and Africa to the higher latitudes of northern Europe. They tabulated the number of pollinating and pest-controlling insects at these sites — both the absolute number of individuals and the number of species — along with an assessment of the ecosystem services the insects provided.
In almost all of the studies they looked at, the team found that a more diverse pool of these species translated into more pollination and greater pest control. They also showed that simplified landscapes supported fewer species of service-providing insects, which ultimately led to lower crop yields.
The researchers also looked at a third measure of the makeup of insect populations — what they called "evenness." In natural ecosystems, a handful of dominant species with many more individuals typically live alongside a higher number of rarer species. The team found as landscapes became less diverse, dominant species numbers dwindled and rare species gained ground. This resulting, more equitable mix led to less pollination (though it didn't end up affecting pest control).
"Our study provides strong empirical support for the potential benefits of new pathways to sustainable agriculture that aim to reconcile the protection of biodiversity and the production of food for increasing human populations," Ingolf Steffan-Dewenter, one of the study's authors and an animal ecologist at the University of Würzburg in Germany, said in the statement.
The scientists figure that the richness of pollinator species explains around a third of the harmful impacts of less diverse landscapes, while the richness of pest-controlling species accounts for about half of the same measure. In their view, the results of their research point to the need to protect biodiversity on and around crops in an uncertain future.
"Under future conditions with ongoing global change and more frequent extreme climate events, the value of farmland biodiversity ensuring resilience against environmental disturbances will become even more important," Steffan-Dewenter said.
Reposted with permission from our media associate Mongabay.