Pétroles non conventionnels (tight Oil)

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Re: Pétroles non conventionnels (tight Oil)

Message par energy_isere » 08 déc. 2015, 20:01

Le schiste ne s'exporte pas

Par Ludovic Dupin - Usine Nouvelle le 29 octobre 2015

Les gaz et pétrole de schiste n’ont pas encore quitté l’Amérique du Nord ! « Les États-Unis comptent 100 000 puits actifs, le Canada 20 000. Dans le reste du monde, il en existe entre 500 et 1 000 » précise Jean-Louis Schilansky, le président du centre hydrocarbures non conventionnels (CHNC) qui vient de présenter un panaroma de l’exploration et de l’exploitation. « La question est de savoir si ce phénomène restera purement nord-américain. Franchement, je ne le crois pas », affirme-t-il. Aujourd’hui, l’essentiel de la production mondiale d’hydrocarbures de schiste provient des États-Unis (4,2 millions de barils par jour et 350 Gm3 de gaz de schiste), du Canada (1 million de barils par jour et 30 Gm3 de gaz) et d’Argentine (50 000 barils par jour et 1,5 Gm3 de gaz).

Indépendance et décarbonisation

Toutefois, le CHNC dénombre dix autres pays qui ont engagé des recherches sur le sujet : Allemagne, Afrique du Sud, Algérie, Arabie saoudite, Australie, Chine, Danemark, Pologne, Royaume-Uni et Russie. Dans la majorité de ces pays, on retrouve des raisons communes à cet intérêt pour les hydrocarbures non conventionnels. D’une part, une volonté d’accroître leur indépendance énergétique. La Pologne veut s’affranchir de la Russie et le Royaume-Uni veut compenser la baisse de sa production d’hydrocarbures en mer du Nord. D’autre part, ils partagent un souci de décarbonisation de l’économie. L’Allemagne, la Chine et le Danemark remplacent des centrales au charbon par des centrales à gaz. Les recherches exploratoires sont plus ou moins couronnées de succès. Les études sur la Pologne annonçaient 4 000 Gm3 de gaz de schiste dans le sous-sol.

Après les premières prospections, ce potentiel a été réduit à 550 Gm3. De même, au Danemark, les recherches de Total n’ont pas produit les résultats escomptés. À l’inverse, au Royaume-Uni, les puits forés ont révélé un potentiel très important de 700 Gm3 de gaz de schiste, soit dix ans de consommation nationale. En Allemagne, les études évoquaient 500 Gm3 de réserves. Elles ont finalement été réévaluées à près de 1 300 Gm3 par l’Institut fédéral allemand des géosciences. La révolution des schistes peine à se mondialiser.
http://www.usinenouvelle.com/article/le ... as.N359057

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Re: Pétroles non conventionnels (tight Oil)

Message par energy_isere » 09 janv. 2020, 17:35

Russia's Gazprom Neft sees Bazhenov shale oil commercial output in 2025

March 1 , 2018
KHANTY-MANSIISK, Russia, (Reuters)

Russia’s Gazprom Neft expects to start commercial production from Bazhenov formation, the world’s largest shale oil resource, in 2025 provided it can reduce lifting costs from current estimates for the project, company officials said.

The International Energy Agency describes Bazhenov as the world’s largest source rock, a bed of ancient organic matter dating back to the Jurassic period which has given rise to most of the crude oil pumped from the fields of West Siberia.

Production of such oil is more costly than the extraction of the oil from conventional reservoirs.

“We understand that this is a very serious technological challenge,” Alexei Vashkevich, head of geological exploration and resource base development at Gazprom Neft, told reporters.


For the project to be viable, lifting costs needed to fall to 8,500 roubles ($151) per tonne, Vashkevich said, without disclosing current estimates.

Kirill Strizhnev, who oversees the Bazhenov project for Gazprom Neft, said commercial production might start in 2025.

Gazprom Neft, which estimates that it can potentially extract 400 million tonnes of oil equivalent (8 million barrels per day) from Bazhenov, currently produces 150 tonnes per day from the formation.

The company initially planned to tap Bazhenov jointly with Shell but the international major withdrew from the project in 2014 following international sanctions against Russia for its role in Ukrainian crisis.

$1 = 56.26 roubles Reporting by Oksana Kobzeva Writing by Vladimir Soldatkin Editing by Edmund Blair
https://www.reuters.com/article/russia- ... SL8N1QI7OA

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Re: Pétroles non conventionnels (tight Oil)

Message par energy_isere » 09 janv. 2020, 17:45

Du shale oil au Canada ?
Why Canada is the next frontier for shale oil

Nia Williams JANUARY 29, 2018
CALGARY, Alberta (Reuters)

The revolution in U.S. shale oil has battered Canada’s energy industry in recent years, ending two decades of rapid expansion and job creation in the nation’s vast oil sands.

Now Canada is looking to its own shale fields to repair the economic damage.

Canadian producers and global oil majors are increasingly exploring the Duvernay and Montney formations, which they say could rival the most prolific U.S. shale fields.

Canada is the first country outside the United States to see large-scale development of shale resources, which already account for 8 percent of total Canadian oil output. China, Russia and Argentina also have ample shale reserves but have yet to overcome the obstacles to full commercial development.

Canada, by contrast, offers many of the same advantages that allowed oil firms to launch the shale revolution in the United States: numerous private energy firms with appetite for risk; deep capital markets; infrastructure to transport oil; low population in regions that contain shale reserves; and plentiful water to pump into shale wells.

Together, the Duvernay and Montney formations in Canada hold marketable resources estimated at 500 trillion cubic feet of natural gas, 20 billion barrels of natural gas liquids and 4.5 billion barrels of oil, according to the National Energy Board, a Canadian regulator.

“The Montney is thought to have about half the recoverable resources of the whole oil sands region, so it’s formidable,” Marty Proctor, chief executive of Calgary-based Seven Generations Energy, told Reuters in an interview.

Canada’s shale output stands at about 335,000 bpd, according to energy consultants Wood Mackenzie, which forecasts output should grow to 420,000 bpd in a decade. The pace of output growth could quicken and the estimated size of the resources could rise as activity picks up and knowledge of the fields improves, according to the Canadian Association of Petroleum Producers.

Seven Generations and Encana Corp, also based in Calgary, are among leading producers developing the two regions. Global majors including Royal Dutch Shell and ConocoPhillips - who pulled back from the oil sands last year - are also developing Canadian shale assets.

Chevron Corp announced its first ever Canadian shale development in the Duvernay in November. Spokesman Leif Sollid called it one of the most promising shale opportunities in North America. ConocoPhillips sees potential for the Montney to deliver significant production and cash flow to the company, executive vice president of production drilling and projects Al Hirshberg said in November.

Shell will invest more money this year in the Duvernay than any other shale field except the Permian Basin in West Texas, the most productive U.S. shale play, spokesman Cameron Yost said.

“We may learn something in the Permian that becomes applicable in the Montney, and vice versa,” Yost said.

.............
The Duvernay in central Alberta is a shale play, while the Montney, straddling northern Alberta and British Columbia, is technically a formation of siltstone, a more porous rock. Drilling and extraction techniques are the same, however, and many in the industry use the term shale for both.

The Duvernay is comparable to the Eagle Ford shale field in South Texas. The Montney is unique, with its enormous gas resources and extremely thick rock formation containing several different levels at which oil and gas can be drilled, said Mike Johnson, technical leader of hydrocarbon resources for the National Energy Board.

Weak prices in an oversupplied natural gas market have hampered development, along with added costs of shipping from the far-flung fields and limited capacity on pipelines. That makes it harder to compete with producers in shale gas plays such as the Marcellus in the northeastern United States.
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https://www.reuters.com/article/us-cana ... SKBN1FI0G7

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lire https://www.naturalgasintel.com/duvernayinfo

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