Excitation autour du pétrole des Bakken (USA)

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Excitation autour du pétrole des Bakken (USA)

Message par energy_isere » 05 juin 2008, 13:08

Voici une deuxiéme article sur des reserves de pétrole non conventionel (dur à extraire) et qui ne sont ni des pétroles visqueux comme dans l' Orinoco belt (venezuela) ni des tar sands (Canada) ni des oil shale ...

http://www.bloomberg.com/apps/news?pid= ... j1uo_gdNI4

le premier article que j' avais mis la : http://forums.oleocene.org/viewtopic.ph ... 23#p178623

Ce n'est pas une découverte nouvelle (connu depuis 50 ans) mais le type de formation dans lequel est ce pétrole ne permettait pas des couts bon marchés (c'est à dire compétitifs) d' exploitation.
Avec un pétrole à 100 $ le baril (depuis plus de 100 jours déjà), la situation change et il semble qu' on assiste à une ruée vers l' or noir dans le Dakota.
De grosses fortunes vont se faire. (le mythe états unien ....)

A suivre dans les années qui viennent.
Dakota Oil Fields of Saudi-Sized Reserves Make Farmers Drillers


June 3 (Bloomberg) -- John Bartelson, who smokes Marlboro Lights through fingers blackened with tractor grease, may look like an average wheat farmer. He isn't. He's one of North Dakota's new oil barons.

Every month, he gets a check for tens of thousands of dollars from a company in Houston called EOG Resources Inc., which drilled two oil wells on his land last year. He says the day his first royalty check arrived was one to remember.

``I smiled to beat hell, and I went to town and had a beer,'' Bartelson, 65, says.

His new wealth springs from the Bakken formation, a sprawling deposit of high-quality crude beneath the durum wheat fields of North Dakota, Montana and southern Saskatchewan and Manitoba. The Bakken may give the U.S. -- the world's biggest importer of oil -- a new domestic energy source at a time when demand from China and India is ratcheting up the global competition for supplies and propelling average U.S. gasoline prices to almost $4 a gallon.

And unlike the tar from Canada's oil sands, Bakken crude needs little refining. Swirl some of it in a Mason jar and it leaves a thin, honey-colored film along the sides. It's light - -almost like gasoline -- and sweet, meaning it's low in sulfur.

Best of all, the Bakken could be huge. The U.S. Geological Survey's Leigh Price, a Denver geochemist who died of a heart attack in 2000, estimated that the Bakken might hold a whopping 413 billion barrels. If so, it would dwarf Saudi Arabia's Ghawar, the world's biggest field, which has produced about 55 billion barrels.

Thin Deposit

The challenge is getting the oil out. Bakken crude is locked 2 miles (3.2 kilometers) underground in a layer of dolomite, a dense mineral that doesn't surrender oil the way more-porous limestone does. The dolomite band is narrow, too, averaging just 22 feet (7 meters) in North Dakota.

The USGS said in April that the Bakken holds as much as 4.3 billion barrels that can be recovered using today's engineering techniques. That's a fraction of the oil that Price said should be there, but it's still the largest accumulation of crude in the 48 contiguous U.S. states. North Dakota, where Bakken exploration is most intense now, won't become Saudi Arabia unless technology improves.

``The Bakken is the biggest thing in oil in the lower 48 right now,'' says Jim Jarrell, president of Ross Smith Energy Group Ltd., a research firm in Calgary. ``And among the least understood.''

.....
Fool's Gold

For decades, the Bakken was the fool's gold of the oil industry. The name describes a geological formation that looks like an Oreo cookie: two layers of black shale that bleed oil into the middle layer of dolomite. It's named after Henry O. Bakken, the North Dakota farmer who owned the land where the first drilling rig revealed the shale layers in the 1950s.

All of the layers are thin -- about 150 feet altogether -- and none of them give up oil easily. In older, vertical wells, oil would often flow for a month and then fizzle.

Now, companies like Austin, Texas-based Brigham Exploration Co.; Denver-based Whiting Petroleum Corp.; and EOG are drilling horizontally. They go straight down 10,000 feet and then put a slight angle in the mud motor, a 30-foot piece of tubing that drives the bit, so they hit the Bakken sideways, making a horizontal tunnel 4,500 feet long through the dolomite.

That exposes more of the oil-bearing rock. Then they pump pressurized water and sand into the hole to fracture the dolomite, making cracks for oil to seep through.

It eventually winds up in a pipeline that runs east to Clearbrook, Minnesota, and then south to Chicago.

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Re: Excitation autour du pétrole des Bakken (USA)

Message par energy_isere » 05 juin 2008, 13:17

l' entrée "Bakken formation" dans Wikipedia en Anglais :

http://en.wikipedia.org/wiki/Bakken_Formation
Porosities in the Bakken average about 5%, and permeabilities are very low, averaging 0.04 millidarcies—much lower than typical oil reservoirs.[4] However, the presence of horizontal fractures makes the Bakken an excellent candidate for horizontal drilling techniques in which a well drills along the extent of the rock layer, rather than punching a hole vertically through it. In this way, many thousands of feet of oil reservoir rock can be penetrated in a unit that reaches a maximum thickness of only about 140 feet (40 m).[5] Production is also enhanced by artificially fracturing the rock,[6] to allow oil to seep through for centralized collection.
donc, le pétrole est piégé dans de la roche avec trés peu de porosité et sur une épaisseur assez mince. La technique d' exploitation doit plutot étre du forage horizontal que le classique puit vertical.


Un petit site sur le pétrole des Bakken : http://bakkenoil.com/faq/

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Re: Excitation autour du pétrole des Bakken (USA)

Message par Lansing » 05 juin 2008, 14:52

On va finir par aller le chercher avec une paille.
Achetez un vélo pendant qu'ils sont encore abordables.
Désolé pour le HS EI.

Patrick

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Re: Excitation autour du pétrole des Bakken (USA)

Message par Tokugawa » 05 juin 2008, 22:01

.
Dernière modification par Tokugawa le 19 sept. 2008, 20:47, modifié 1 fois.

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Un océan de brut aux US ?

Message par the_oliver_2000 » 11 juin 2008, 11:29

En allant suivre les exploits d'Alain sur libéraux.org je suis tombé sur ce lien, dans lequel on parle d'un champ de 413 milliards de baril. Mais entre mon anglais un peu limité et mes compétences techniques dans ce domaine quasiment nulles, je n'arrive pas à faire la part des choses.
Que faut il en penser ?

http://www.chron.com/disp/story.mpl/hea ... 24026.html

Citation:
Best of all, the Bakken could be huge. The U.S. Geological Survey's Leigh Price, a Denver geochemist who died in 2000, estimated that the Bakken might hold 413 billion barrels. If so, it would dwarf Saudi Arabia's Ghawar, the world's biggest field, which has produced about 55 billion barrels.

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Re: Un océan de brut aux US ?

Message par GillesH38 » 11 juin 2008, 11:33

c'est les schistes bitumineux ("oil shales"), le serpent de mer de l'industrie pétrolière.

Pour comparer au "vrai" pétrole, ça ressemble à ça

Image

on soupçonne immédiatement que ce n'est pas aussi simple à extraire que ça :lol:

Image
- Je suis Charlie - "I do not see any harm in people making money if it leads to a lower carbon society " R.K. Pachauri, président du GIEC, interview du 6 mai 2008 à Emirates Business.

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Re: Un océan de brut aux US ?

Message par the_oliver_2000 » 11 juin 2008, 11:37

Merci, une image vaut mille mots :-D

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Re: Un océan de brut aux US ?

Message par youplaboum » 11 juin 2008, 11:44

the_oliver_2000 a écrit :En allant suivre les exploits d'Alain sur libéraux.org je suis tombé sur ce lien, dans lequel on parle d'un champ de 413 milliards de baril. Mais entre mon anglais un peu limité et mes compétences techniques dans ce domaine quasiment nulles, je n'arrive pas à faire la part des choses.
Que faut il en penser ?
Etude très détaillée du bazar, désolé c'est en anglais :
http://www.theoildrum.com/node/3868

En résumé (très résumé), c'est de la "hype"...

Mais bien que ce soit du schiste, il y a quand même quelques nappes d'une huile de grande qualité dans certains coins, produisant au total actuellement quelques dizaines de milliers de barils par jour, et éventuellement deux à trois fois plus. On est très très loin d'une nouvelle Arabie Séoudite !

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Re: Un océan de brut aux US ?

Message par energy_isere » 11 juin 2008, 13:19

the_oliver_2000 a écrit :En allant suivre les exploits d'Alain sur libéraux.org je suis tombé sur ce lien, dans lequel on parle d'un champ de 413 milliards de baril. Mais entre mon anglais un peu limité et mes compétences techniques dans ce domaine quasiment nulles, je n'arrive pas à faire la part des choses.
Que faut il en penser ?

@the_oliver_2000,

je fusionne avec le fil correspondant que j' avait crée quelques jours avant. :)

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Re: Un océan de brut aux US ?

Message par Raminagrobis » 13 juin 2008, 23:46

youplaboum a écrit :Mais bien que ce soit du schiste, il y a quand même quelques nappes d'une huile de grande qualité dans certains coins, produisant au total actuellement quelques dizaines de milliers de barils par jour, et éventuellement deux à trois fois plus. On est très très loin d'une nouvelle Arabie Séoudite !
Oui les schistes sont la roche source, comme dans une grade partie des régions pétrolifères du monde. Ici la roche source est suffisamment riche pour envisager de les exploiter directement.

Ils ont nourri des gisements de pétrole conventionnels, notamment elm coulee, qui est en soi remarquable : 270 Mb, il a été découvert en l'an 2000. Certes c'est que 3.5 jours de consommation mondiale, mais c'est remarquable de trouver encore des gisements de cette taille dans un pays qui a été exploré aussi intensivement. Y'en a un autre depuis, Covenant en 2003 dans l'Utah.
Toujours moins.

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Re: Un océan de brut aux US ?

Message par energy_isere » 19 juin 2009, 17:14

Petite découverte effective dans les Bakken :
Basic Earth Reports Production from Bakken Well

DENVER--(BUSINESS WIRE)

BASIC EARTH SCIENCE SYSTEMS, INC. reports that the Roscoe 2H-8 well, a horizontal well located in the Banks Prospect in eastern McKenzie County, ND, came online in early May 2009. The well tested at a rate of 543 barrels of oil, 1,185 thousand cubic feet of gas and 122 barrels of water per day. Drilled in the Bakken formation, the well is currently flowing at a rate of 300 barrels of oil per day. Basic Earth’s partner, Panther Energy Company, LLC, Tulsa, OK, drilled the well and is the operator, with Basic Earth retaining a 6.5% interest in Panther’s interest in the well.

Commenting on the initial well production, President Ray Singleton said, “We are pleased with the successful completion of this well in the Bakken formation and are hopeful that an improvement in the price of oil will allow for addition drilling in this area.”

The Roscoe well, along with the Wil E. Coyote well previously drilled by Panther, is located on the 13,000 gross acres Banks Prospect which is overlying the Bakken formation. In August 2008, Basic Earth signed an agreement with Panther, the terms of which give Panther the rights to Basic Earth’s 20% interest in the Banks Prospect, a 20-partner consortium. Under the terms of the agreement, Panther was required to drill two horizontal wells in the Bakken formation and carry Basic Earth for its cost exposure in the first two wells. Basic Earth will now be required to pay its proportional share of costs for future wells drilled.

Basic Earth is an independent oil and gas exploration and production company with primary operations in the Williston Basin, the Denver-Julesburg Basin in Colorado, southern Texas and the Gulf Coast area. Basic Earth is traded on the Over The Counter Bulletin Board under the symbol BSIC. Information on Basic Earth can be found at its Web site: http://www.basicearth.net.
Par ailleurs dans google actualité on trouve des liens comme
http://www.americanfreepress.net/html/b ... s_182.html
et
http://www.georgetownnews.com/articles/ ... 200627.txt

mais ca semble pas trés sérieux.

Un autre est plus interessant, qui dit que le plus gros probléme actuel est le manque de pipeline pour sortir le pétrole extrait des Bakken.

Une partie de la production part par train !
Official sees more interest in oil transport

BISMARCK (AP) — A proposal to move oil from northwestern North Dakota into a pipeline from Canada has led to more interest in other ways of getting the state’s oil to market, Mineral Resources Director Lynn Helms says.

The $199 million proposal for a pipeline from northwestern North Dakota to TransCanada Corp.’s new Keystone pipeline, which starts southern Saskatchewan, was discussed at a recent oil and gas meeting in Regina, Saskatchewan, Helms said.

Companies are looking at the idea, but now other proposals have come up as well, he said.

The Enbridge company, for example, is stepping up plans to pipe North Dakota crude to Manitoba, he said.

“In addition to that, we now have a company that is investigating a pipeline to go from the Baker, Mont., area to Billings, to move North Dakota crude west rather than south out of that market,” Helms said. “It has stimulated a lot of thinking.”

Helms said a rail station at Stanley is being upgraded to ship crude oil to Oklahoma — a temporary fix until new pipelines come on line — and he said it shows confidence in North Dakota crude.

Oil from North Dakota’s Bakken shale formation now is discounted as much as $10 per barrel because of the bottleneck in getting the oil to market, Helms said.

Drilling activity in North Dakota’s oil patch has picked up, and 38 rigs are now working in the Bakken, he said.

“It’s going to be a difficult year, but next year when we have true pipeline expansion and more export capacity, folks want to be ready to really move ahead,” Helms said.
http://www.jamestownsun.com/event/article/id/87359/

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Re: Un océan de brut aux US ?

Message par energy_isere » 19 juin 2009, 20:52

D' aprés cette source seul 4.3 milliards de barils seraient à recuperer des Bakken, parmi les "reserves" en place d' environ 500 milliards de barils. (Selon études USGS).


Image

Image

mais comme ca vient d' un site plutot energie renouvelable, on s' étonnera pas qu' une version "il y aura pas grand chose à esperer" soit présentée.
source : http://www.green-planet-solar-energy.co ... n-oil.html

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Re: Un océan de brut aux US ?

Message par energy_isere » 19 juin 2009, 21:00

AH ! Aprés quelques recherches je tombe sur ca : http://nextbigfuture.com/2008/04/usgs-b ... d-365.html

qui me donne la press release de l' USGS du 4 Octobre 2008 qui avait lancé l' affaire.
3 to 4.3 Billion Barrels of Technically Recoverable Oil Assessed in North Dakota and Montana’s Bakken Formation—25 Times More Than 1995 Estimate—

http://www.usgs.gov/newsroom/article.asp?ID=1911
Reston, VA - North Dakota and Montana have an estimated 3.0 to 4.3 billion barrels of undiscovered, technically recoverable oil in an area known as the Bakken Formation.

A U.S. Geological Survey assessment, released April 10, shows a 25-fold increase in the amount of oil that can be recovered compared to the agency's 1995 estimate of 151 million barrels of oil.

Technically recoverable oil resources are those producible using currently available technology and industry practices. USGS is the only provider of publicly available estimates of undiscovered technically recoverable oil and gas resources.

New geologic models applied to the Bakken Formation, advances in drilling and production technologies, and recent oil discoveries have resulted in these substantially larger technically recoverable oil volumes. About 105 million barrels of oil were produced from the Bakken Formation by the end of 2007.

The USGS Bakken study was undertaken as part of a nationwide project assessing domestic petroleum basins using standardized methodology and protocol as required by the Energy Policy and Conservation Act of 2000.

The Bakken Formation estimate is larger than all other current USGS oil assessments of the lower 48 states and is the largest "continuous" oil accumulation ever assessed by the USGS. A "continuous" oil accumulation means that the oil resource is dispersed throughout a geologic formation rather than existing as discrete, localized occurrences. The next largest "continuous" oil accumulation in the U.S. is in the Austin Chalk of Texas and Louisiana, with an undiscovered estimate of 1.0 billions of barrels of technically recoverable oil.

"It is clear that the Bakken formation contains a significant amount of oil - the question is how much of that oil is recoverable using today's technology?" said Senator Byron Dorgan, of North Dakota. "To get an answer to this important question, I requested that the U.S. Geological Survey complete this study, which will provide an up-to-date estimate on the amount of technically recoverable oil resources in the Bakken Shale formation."

The USGS estimate of 3.0 to 4.3 billion barrels of technically recoverable oil has a mean value of 3.65 billion barrels. Scientists conducted detailed studies in stratigraphy and structural geology and the modeling of petroleum geochemistry. They also combined their findings with historical exploration and production analyses to determine the undiscovered, technically recoverable oil estimates.

USGS worked with the North Dakota Geological Survey, a number of petroleum industry companies and independents, universities and other experts to develop a geological understanding of the Bakken Formation. These groups provided critical information and feedback on geological and engineering concepts important to building the geologic and production models used in the assessment.

Five continuous assessment units (AU) were identified and assessed in the Bakken Formation of North Dakota and Montana - the Elm Coulee-Billings Nose AU, the Central Basin-Poplar Dome AU, the Nesson-Little Knife Structural AU, the Eastern Expulsion Threshold AU, and the Northwest Expulsion Threshold AU.

At the time of the assessment, a limited number of wells have produced oil from three of the assessments units in Central Basin-Poplar Dome, Eastern Expulsion Threshold, and Northwest Expulsion Threshold.
The Elm Coulee oil field in Montana, discovered in 2000, has produced about 65 million barrels of the 105 million barrels of oil recovered from the Bakken Formation.

Results of the assessment can be found at http://energy.usgs.gov.

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Re: Un océan de brut aux US ?

Message par energy_isere » 25 juin 2009, 19:29

Dans les bréves de contreinfo de ce jour je vois :
USA : L’activité économique a baissé en mai dans 47 Etats

jeudi 25 juin Calculated Risk

The Federal Reserve Bank of Philadelphia has released the coincident indexes for the 50 states for May 2009. In the past month, the indexes have increased in one state (North Dakota), decreased in 47, and were unchanged in the other two (South Dakota and Vermont), for a one-month diffusion index of -92. Over the past three months, the indexes have increased in one state (again, North Dakota) and decreased in the other 49 states,

Sources CR
Interessant ca !
Le Dakota du Nord, le SEUL état US en croissance, et comme par hasard c' est la ou le pétrole des Bakken est en pleine expansion. 8-)
Pas tout à fait du hasard. :-"

Image

Un état grand comme 1/3 de la France, avec seulement 642000 habitants (source Wikipédia 2008) soit pas plus que leur population de 1920, c' est sur qu' avec une industrie de l' extraction du pétrole en expansion, à pas trop de mal à faire croitre son PIB.

http://en.wikipedia.org/wiki/North_Dakota

et peut étre un petit record local : 93% de l' electricité produite par le Charbon.
Vont pas voter pour la taxe carbone ceux la :lol: .

Image
(Wikipedia)

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Re: Un océan de brut aux US ?

Message par energy_isere » 08 sept. 2009, 13:17

Voila une innovation technique pour l' exploitation du pétrole des Bakken qui a une géologie trés particuliére (à mon avis, aucun interét pour les champs traditionnels).

L' idées est que la plateforme de forage puisse se déplacer de 10 m (30 feet) en 8 heures et faire ainsi 4 trous sur un seul pad raccordé à la route et au pipeline.

C' est une technique qui vient du forage pour le Gaz naturel.
Innovation in Oil Field Means More Oil, Less Expense

A new concept coming to North Dakota's oil fields will make it look like less drilling is going on when actually much more is.

Harold Hamm, owner of Continental Resources and an innovator in tapping a rich new formation beneath the Bakken formation, has a permit to drill a new well using what his company is calling the ECO-Pad concept.

The concept is to drill four wells from one pad with a rig capable of "walking" about 30 feet from one well to the next in eight hours.

Hamm said he expects to drop the price of drilling a well by 10 percent and increase oil production by about the same number. "ECO" relates to less land disturbance because one pad will be leveled instead of four, using the same road system, power lines and product pipeline, he said.

The technique was developed for natural gas, and Hamm said he may be the first to apply it to oil production. "As far as I know, it hasn't been (done elsewhere)," he said.

Hamm said the wells -- two each -- will go into both the Bakken and Three Forks-Sanish zones from the same pad.

"With two zones, it set up a need to deal with both zones in one well bore. This is a very compact way of doing it," Hamm said. He said it also will improve contact with the reservoir, meaning more of the formation is tapped.

Hamm has led the way in proving the Three Forks-Sanish is a separate oil-bearing zone beneath the very lucrative Bakken, instead of simply draining off the same reserve.

In addition to the one permit, the company has authorization for eight more ECO-Pad sites. Hamm said he plans to drill them all next year.

Lynn Helms, director of North Dakota's Department of Mineral Resources, said the technology is a big step forward for oil production because it reduces surface impact by as much as 75 percent and potentially increases oil recovery up to 10 percent.

Helms said Continental's ECO-Pad permit combines two, 1,260-acre spacings and one set of four wells will be drilled on one side and another set of four on the other. Since the co-joined spacing alters field rules, Helms said the ECO-Pad-style permits require a public hearing.

"We want to look at these very carefully and make sure everybody's rights are protected," he said.

The permit and eight others pending are all located in the Elm Tree field between New Town and Keene. That's near the best Three Forks-Sanish well drilled so far, one that's produced 700,000 barrels since 2006, Helms said.

The rig count in North Dakota is slowly inching back up from less than 40 to 46 as of Wednesday, down from more than 90 rigs a year ago.

Comparing that to the '80s boom record of 170 rigs almost requires new math. Rigs now can do eight times the work compared to then. Helms said the new ECO-Pad style rig, which nearly eliminates typical rig move time of three to five days, "will increase that by a significant amount."
http://www.rigzone.com/news/article.asp?a_id=80070

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