Seeing that politics are getting rancid...
It's time to find some fresher oil. (Okay, it's a stretch - but not quite as stretched as this drill string!)
BP announces `giant' oil find in Gulf of Mexico - Yahoo! FinanceJust for your entertainment, I looked up some info on how long a stretch of drill pipe (called a stand) is. The length varies between 27 and 29 meters, so we'll call it 28 meters.LONDON (AP) -- BP PLC said Wednesday that it had made a "giant" oil discovery in the Gulf of Mexico but had not yet determined the size and commercial potential of the find.
The well, in Keathley Canyon block 102 about 250 miles (400 kms) southeast of Houston, is in 4,132 feet (1,259 meters) of water, the company said.
The Tiber well was drilled to a total depth of 35,055 feet (10,685 meters), making it one of the deepest wells ever drilled by the oil and gas industry, BP said.
BP has a 62 percent interest in Tiber, while Petrobras holds 20 percent and ConocoPhillips has 18 percent.
BP shares were up 1.9 percent at 529.5 pence on the London Stock Exchange.
A total depth of 10,685 meters, divided by 28 is 381 and a fraction.
That's a lot of pipe, and a lot of work moving things up or down.
Add in the fact that they're drilling in 4,000 feet of water.... and you're talking about a feat that would have been in the record books twenty years back.
Now, one of the interesting things about this is that about seven years back I was blogging on this subject. (Ancient History Here...) but stopped because there were no new stories that made it above the background news clutter. (Yeah, not like there's been anything ELSE going on, eh?)
So, without further ado, here's bits and pieces about what I was posting then.
Deep petroleum and the nonI've always been a bit curious about the origins of petroleum. The idea that it was leftover dinosaur squeezings (IE organic material that somehow had gotten folded down into the earth and rendered into rich, gooey long-chain liquid hydrocarbons) didn't quite work. The origins of coal work - since it's (a) solid and (b) carbon and (c) they've found plant fossils in coal, but it's kind of hard to pull out a sample of gunk from the La Brea Tar Pits and go "Yep, there's a quarter of a brontosaurus there, and three velociraptors." The idea of the earth being literally awash in hydrocarbons from day one makes a bit more sense, though it's still kind of odd.In recent years, evidence of hydrocarbons in asteroids and comets has continued to accumulate. In the non-organic framework, these petroliferous asteroids/comets are the progenitors of the Earths oil. Hence, the occurrence of primordial petroleum in large quantities is expected. In this light, the recent discoveries of hydrocarbon ice on objects in the Kuiper belt, a band of objects just beyond the orbit of Neptune, is an indication of the substantial amounts of extraterrestrial hydrocarbons4.
In fact, with these large quantities of hydrocarbon having been dumped on the Earth during its formation, the question is reversed. If the petroleum on the Earth is entirely of an organic origin why has all this primordial hydrocarbon only been a silent spectator?
Unfortunately, a lot of the links have 404'ed. Fortunately, the Internet Archive (Archive.Org) still has them. And here's the paper that really sparked my interest....
The Origin of Methane (and Oil) in the Crust of the EarthSo - something a bit different for the mid-week. Wouldn't it be interesting if we DID have all the oil we needed for the next few hundred years? Of course, the way things are going I fully expect Pelosi and Reid to try to choke off exploration by BP, and certainly do what they can to restrict drilling indefinitely.Abstract
The deposits of hydrocarbons in the crust of the Earth have long been regarded by many investigators as deriving from materials incorporated in the mantle at the time of the Earth's formation. Outgassing processes, active in all geological epochs, then transported the liquids and gases liberated there into porous rocks of the crust. The alternative viewpoint, that biological debris was the source material for all crustal hydrocarbons, gained widespread acceptance when molecules of clearly biological origin were found to be present in most commercial crude oils.
Modern information re-directs attention to the theories of a non-biological, primeval origin. Among this information is the prominence of hydrocarbons—gases, liquids and solids—on many other bodies of the solar system, as well as in interstellar space. Advances in high-pressure thermodynamics have shown that the pressure-temperature regime of the Earth would allow hydrocarbon molecules to be formed and to survive between the surface and a depth of 100 to 300 km. Outgassing from such depth would bring up other gases present in trace amounts in the rocks, thus accounting for the well known association of hydrocarbons with helium. Recent discoveries of the widespread presence of bacterial life at depth point to this as the origin of the biological content of petroleum.
J.