[Découvertes] Le pétrole antésalifère au large du Brésil

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par LeLama » 05 mai 2009, 10:12

Raminagrobis a écrit :LIEN

Pétrobras sort du pétrole de Tupi...
Ce sera interessant de noter les resultats. D'apres l'article de Bloomberg, c'est sous 2 km d'eau et 5 km de sable. Est-ce possible d'exploiter un tel gisement techno-economiquement ? A quel cout ?

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par Philippe » 11 juin 2009, 11:22

L'agence de notation Standard & Poor's vient d'abaisser la notation de la dette de Petrobras, en la passant à BBB-, ce qui est la plus mauvaise note possible. L'explication : S&P reduced the rating late yesterday to BBB- from BBB because of concern the Rio de Janeiro-based company will have difficulty raising financing for a $174.4 billion investment plan. Petrobras, as the company is known, is trying to boost output by more than half to 3.66 million barrels a day by the end of 2013.
Même s'il y a toutes les réserves de pétrole brut nécessaires, les prêteurs vont se fier à la notation de Standard & Poor's et
éviter de prêter de l'argent à Petrobras.
Il y a sans doute lieu de revoir le profil de production prévisible du Brésil, avec une montée en régime plus lente que la volonté affichée.http://www.bloomberg.com/apps/news?pid= ... CEdWxpkohE

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par Raminagrobis » 20 juin 2009, 00:18

lien: un nouveau puits dans tupi qui a rencontré du pétrole... Il ne modifie pas l'estimation sur la taille du gisement, qui reste "5 à 8 milliards de barrils équivalents" mais augmente la confiance en celle ci.
Toujours moins.

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 08 juil. 2009, 15:26

Comme quoi ca marche pas à tous les coups : un forage sec aprés 5000 m de forage dans une zone ou était recherché du pétrole en couche anté salifére :
Hess Corp. fails to find oil in pre-salt layer well in Brazil

RIO DE JANEIRO, July 7 (Xinhua)

U.S. oil company Hess Corporation announced on Tuesday its failure in finding any traces of oil or natural gas in a well drilled in the Guarani Field in Brazil's pre-salt layer oil reserves area.

According to Hess, the drilling stopped at the depth of 5,000 meters.

The company has decided to withdraw from the business for not finding hydrocarbons. It's still unclear how seriously the investments made so far would impact the company's results.

It's the first time a company can't manage to find oil or gas in a well in Brazil's pre-salt layer. Located beneath a salt layer, it's rich in hydrocarbons with an average depth of 2,000 meters, spreading over 800 km of Brazil's southeastern and southern coast.

The absence of hydrocarbons in this area denies the belief that finding oil or natural gas in the Brazil's pre-salt layer fields is 100 percent guaranteed.

Hess is the well's operator, owning 40 percent of the business while Exxon also possess 40 percent. Brazil's state-owned oil and gas giant Petrobras holds the rest.

Presently, the only pre-salt fields with reserves discovered are Tupi and Iara. Altogether their reserves range from eight to 12 billion barrels.
http://news.xinhuanet.com/english/2009- ... 673464.htm

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 06 août 2009, 17:23

Aprés l' intention des Chinois de vouloir investir 10 milliard de $ dans le pétrole Brésilien ( http://forums.oleocene.org/viewtopic.ph ... 96#p221896 ), les USA veulent faire de meme pour 10 milliard de $ aussi :

1 partout, balle au centre.
U.S. Government to Loan Brazil's Petrobras $10 Billion

The U.S. government is preparing to provide up to $10 billion in loans to finance the development of massive hydrocarbon reserves off Brazil’s coast thought to contain 80 billion barrels of high-quality crude, an amount that could lead to a six-fold increase in Brazil’s current proven reserves and transform that nation into one of the world’s 10 largest oil producers.


RIO DE JANEIRO – The U.S. government is prepared to provide up to $10 billion in loans to finance the development of massive hydrocarbon reserves off Brazil’s coast, a Brazilian official said Wednesday.

President Barack Obama’s national security adviser, Gen. James Jones, discussed the matter with officials this week during a visit to the South American country, Brazilian Planning Minister Paulo Bernardo da Silva told reporters.

He said the U.S. Export-Import Bank already has signed a letter of intent in that regard with Brazilian state oil company Petrobras.

The loan is equal in value to a similar credit line agreed to with the China Development Bank, also for exploiting Brazil’s “pre-salt” area, so-named because the estimated 80 billion barrels of high-quality crude in that new oil frontier lie far beneath the ocean floor under layers of rock and an unstable salt formation.

Under the agreement with the Chinese state bank, finalized during Brazilian President Luiz Inacio Lula da Silva’s visit to Beijing in May, Brazil can repay the loan facility with oil as opposed to cash.

According to the government’s projections, the pre-salt reserves – located at a depth of up to seven kilometers (4.3 miles) below the ocean surface in an 800-kilometer by 200-kilometer area – could eventually lead to a nearly six-fold increase in Brazil’s current proven reserves of 14 billion barrels and transform that nation into one of the world’s 10 largest oil producers and a major crude exporter.

Petrobras plans to invest close to $29 billion through 2013 to develop the pre-salt deposits in which the company already holds concession rights.

Petrobras is projecting that some 1.3 million barrels per day can be extracted by 2013 from the pre-salt fields and 1.8 million bpd by 2020.

The Tupi field, which is believed to contain between 5 billion and 8 billion barrels of oil and was the first to be exploited in the pre-salt region, is considered to be the largest hydrocarbon discovery in the Americas in the past 30 years.

Other large oil and natural gas fields were later found nearby, also under a thick bed of salt.

But Brazil has been forced to seek external financing because the fields pose an enormous technical and financial challenge due to the depth and thickness of the salt and the drastic changes in temperature as the oil is brought to the surface.

Acknowledging that Petrobras alone is not capable of developing the massive pre-salt reserves, Brazil announced in May that it will invite international oil companies to bid for concessions in that region beginning next year.

The country had previously halted the sale of concessions after the massive finds were made.

Petrobras, an integrated energy company and the global leader in deepwater oil exploration and production, operates in 27 countries in the Americas, Africa, Asia and Europe.

Shares of Petrobras, Brazil’s largest corporation, trade on the Sao Paulo, New York, Madrid and Buenos Aires stock exchanges, but the Brazilian government retains control through a golden share. EFE
http://www.laht.com/article.asp?Article ... ryId=14090

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par epe » 06 août 2009, 19:55

energy_isere a écrit :1 partout, balle au centre.
Pas vraiment : Les chinois investissent 10 milliards qu'ils ont. Les américains investissent 10 milliards qu'ils empruntent (aux chinois? :-D )

C'est de l'humour (quoi que... :-" -)
-Il vaut mieux pomper même s'il ne se passe rien que de risquer qu'il se passe quelque chose de pire en ne pompant pas.
Les Shadoks

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 19 août 2009, 14:19

dans ce document page 24 : http://www.esop-avas.org/communication/ ... cope59.pdf


on trouve cette interessante image géologique de l' ouverture de la dorsale atlantique et des formations petroliféres.
On peut eventuellement penser que de nouvelles découvertes correspondant à l' antésalifére profond découvert au large du Brésil puisse aussi se trouver au large de l' Afrique.

Mais avec des couts de forage de 240 millions $ (Tupi 1 ) ou 60 millions de $ (Tupi 2), quel pays Africain entre le Gabon, le Congo, L' Angola ou la Namibie , se paiera ce luxe ?

Image]

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 22 août 2009, 11:00

Encore une découverte dans l' antésalifére du bassin de Campos ! Champs de Aruana.
Des analyses préliminaires suggérent un petit bébé de 280 millions de barils récupérables.
Petrobras Announces New Offshore Oil Find

RIO DE JANEIRO

Brazilian state-controlled oil company Petrobras announced the discovery of a new light crude deposit above the salt layer in the Campos basin, off the coast of Rio de Janeiro state.

In its statement, Petrobras said the find was made during drilling at the Aruana field.

“Preliminary analysis indicates the presence of approximately 280 million barrels of recoverable light crude, with good productivity,” the statement read.

Petrobras acquired the block containing the deposit in a bidding round conducted Oct. 18, 2005, by the ANP regulatory agency.

The reserves are located at a depth of around 1,000 meters, above the so-called “pre-salt” cluster, where massives reserves of light crude have been discovered over the past two years in the Santos basin.

According to the government’s projections, the pre-salt reserves – located at a depth of up to seven kilometers (4.3 miles) below the ocean surface in an 800-kilometer by 200-kilometer area – could eventually lead to a nearly six-fold increase in Brazil’s current proven reserves of 14 billion barrels and transform that nation into one of the world’s 10 largest oil producers and a major crude exporter.

The Campos basin currently accounts for roughly 80 percent of Brazil’s crude output, although that will change once the new pre-salt deposits – so-named because they lie under a salt layer up to 2,000 meters thick – are developed.

Petrobras, an integrated energy company and the global leader in deepwater oil exploration and production, operates in 27 countries in the Americas, Africa, Asia and Europe.

http://www.laht.com/article.asp?Article ... ryId=14090

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par SuperCarotte » 09 sept. 2009, 17:35

energy_isere a écrit :Encore un sondage positif de pétrole par Petrobras au large du Brésil :encore à grande profondeur et sous une couche de sel.
UPDATE 1-Brazil's Petrobras finds more light oil in subsalt


SAO PAULO, June 12 (Reuters) - Brazil's state-run oil company Petrobras (PETR4.SA: Quote, Profile, Research) (PBR.N: Quote, Profile, Research) said on Thursday that it struck light oil in another ultra-deep field under the subsalt layer in the Santos Basin.

This is the latest in a slew of promising deep-water light-oil discoveries over the past year that have helped more than double the price of Petrobras shares.

Petrobras said the find was in the Guara, the smaller of two fields in the BM-S-9 ultra-deep block, which also holds the so-called potential super-giant Carioca field. It also yielded light oil from an exploratory well sunk in September of 2007.

The oil from the Guara ranked 28 on the API scale, making it much lighter than the bulk of crude produced in Brazil, which ranges around 14 to 18 API.

Petrobras offered no reserve estimate for the new find, which lies at a very technically challenging ultra-deep depth, under 2,141 meters of water and another 5,000 meters under the ocean floor, including a salt layer.

The field lies 310 km off the coast of Brazil's Sao Paulo state in the Santos Basin.

Petrobras is operator at the BM-S-9 block with a 45 percent stake in the exploration and production concession. Its partners BG Group and Repsol YPF hold 30 percent and 25 percent stakes, respectively. (Reporting by Reese Ewing; editing Carol Bishopric)
Finalement c'est 1.1 to 2.0 billion barrels of oil equivalent
La folie, c’est se comporter de la même manière et s’attendre à un résultat différent. [Albert Einstein]

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 12 sept. 2009, 10:54

Petrobras va lancer d' ici fin Sept un appel d' offre pour 28 plateformes de forage à construire au Brésil pour l' exploration et le développement des champs anté saliféres.
La pression politique force à faire appel à la construction locale, au lieu de la recherche au moindre cout sur le marché mondial.

A finir pour 2013-2018.
Petrobras to launch tender for 28 oil rigs in Sept

Sep 11, 2009

RIO DE JANEIRO, Sept 11 (Reuters) - Brazil's state-run Petrobras this month will launch a bid round on 28 oil rigs to be built in Brazil and used for massive offshore subsalt fields, the company said on Friday.
Brazil plans to rely mostly on locally manufactured equipment to pump crude from deep-sea subsalt fields, part of President Luiz Inacio Lula da Silva's bid to create jobs and bolster domestic industry as Brazil taps new energy wealth.

Petrobras wants up to 28 rigs designed for deep-water exploration to be ready between 2013 and 2018 and will begin by contracting an initial group of nine rigs. It originally announced the tender more than a year ago.

The shipyard that wins the first group of rigs will be able to use the funds to expand shipbuilding capacity, the company said.

Brazil's subsalt push will require a large fleet of deep-water rigs capable of drilling through a thick salt layer beneath the ocean floor that is in some cases 2,000 meters (6,561 feet) deep.

Critics say Petrobras' local content strategy will force it to pay higher prices for goods and services, particularly if political pressures lead it to prioritize job creation over ensuring it acquires equipment at the lowest possible cost.

It may also risk delaying new oil exploration if local shipyards cannot deliver products on time or up to standards.
source : http://www.reuters.com/article/rbssEner ... 2520090911

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 17 sept. 2009, 20:11

Encore un forage positif au large du Brésil :
Repsol makes new discovery in Brazil's Santos Basin

édité le 15/09/2009
- Repsol has a 25% stake in the discovering consortium of Abare West in the Santos Basin.
- Tests are underway to determine the quality and quantity of the discovered resources.
- The recent tests completed in Guara estimate the potential of that area, adjacent to Carioca, at between 1.1 billion and 2 billion barrels of oil equivalent.

................
http://www.euro-petrole.com/ne_03_actua ... cdb67fbe54

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 28 sept. 2009, 12:48

Voila qui devient trés interessant, aprés la Chine, les USA, voila que l' Arabie Saoudite (ARAMCO) s' interesse à investir dans les champs anté-salifére du Brésil :

ARAMCO looks to develop Brazil's offshore oil

Sep, 28 2009

A senior official from Brazil has said that state-owned hydrocarbons giant Saudi Aramco is among the companies interested in helping the South American country to develop its pre-salt oil reserves.

Dow Jones reported that Dilma Rousseff, chief-of-staff to Brazilian president Luiz Inacio Lula da Silva, said that Aramco and a number of other un-named international oil companies wanted to develop the reserves, located off the southwestern coast of Brazil.

"Saudi Aramco's president [Khalid Al-Falih] expressed his interest in investing to me when I was on a state visit to Saudi Arabia this year," Rousseff is reported by Reuters as saying.

The pre-salt reserves are located below a layer of salt under the sea-bed and the largest discovery thus far has been the 5 to 8 billion barrel reserve field Tupi.
http://www.arabianoilandgas.com/article ... shore_oil/

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par Philippe » 04 oct. 2009, 18:43

Il va être intéressant de suivre comment le Brésil compte faire pour financer à la fois le développement des gisements offshore profonds, et les infrastructures pour les Jeux Olympiques de 2016. Il y aura sûrement des arbitrages à rendre, et je ne crois pas que le pétrole parte favori.

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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par osas09 » 09 oct. 2009, 11:13

Philippe a écrit :Il va être intéressant de suivre comment le Brésil compte faire pour financer à la fois le développement des gisements offshore profonds, et les infrastructures pour les Jeux Olympiques de 2016. Il y aura sûrement des arbitrages à rendre, et je ne crois pas que le pétrole parte favori.
Avec tout les arbres qu'ils ont, ils pourront bien en couper quelques uns pour faire du papier. Ils n'ont plus qu'a ajouter un peu d'encre et faire tourner les rotatives pour faire de la jolie monnaie. :lol: :lol: :lol:
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Re: [Découvertes] Un champ géant découvert au large du Brésil

Message par energy_isere » 09 oct. 2009, 20:59

L' annonce pour les 28 plate-formes que j' avais posté le 12 Sept (voir au dessus) se précise : Petrobras doit recevoir les propositions des chantiers navals la semaine prochaine.

Le gouvernement Brésilien aurait mis une garantie de 2.2 milliard de $ sur l' affaire.
Petrobras seeks bids to build 28 offshore platforms

Oct 9, 2009 OGJ

Brazil’s state-run Petroleo Brasileiro SA (Petrobras) will receive bids next week from shipyards to build 28 offshore platforms for developing oil fields in the ultradeep subsalt layer.

“The board of directors approved the strategy for construction of 28 new drilling rigs to be built in Brazil, with increased national content, to explore ultradeep waters including fields located in the subsalt,” Petrobras said in a statement.

Renato Duque, Petrobras service director, announced the bidding procedure for construction of the rigs. Bids will be divided into three packages, with the units expected to go on stream during 2013-17.

“The first (package) will be for seven drilling vessels with capacity to drill at a depth of 3,000 m from the water line. These are traditional, top devices in terms of dynamic positioning,” he said.

“Building seven units will allow the creation of a new shipyard in Brazil. This does not mean we will have a new shipyard, but this is quite likely on account of the scale,” Duque said.

The second package of two units may be of the drilling vessel, semisubmersible, or monocolumn types, Duque said. “Each of these units will be hired from one shipyard, because we want both of them to be delivered within a 40-month timeframe,” he said.

The third, charter-based package will be done in line with Petrobras’s practice up to now, except for one detail: the units must be built in Brazil.

“The only limitation is that each operator may offer no more than 4 units. We can hire no more than 19 units, in order to total 28. Any type of technological innovation will be allowed in the last two lots,”Duque said.

A value for the tenders was not announced. Brazil’s government, however, has pledged 4 billion Brazilian reals ($2.2 billion) in financing to guarantee construction of the rigs, Petrobras said last month.

Brazil’s subsalt discoveries were made under a thick layer of salt in the Santos basin off Sao Paulo and Rio de Janeiro states. The oil lies under more than 2,000 m of water and a further 5,000 m under sand, rock, and a shifting layer of salt.
http://www.ogj.com/index/article-displa ... _bids.html

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