[Découvertes] Le pétrole antésalifère au large du Brésil

[energy_isere]

Petrobras commence le process dans une rafinerie du premier lot de 264000 barils provenant du champs anté salifére de Tupi.

Petrobras Processes First Load of Tupi Pre-Salt Crude

The work of processing the first 264,000 barrels from the Tupi field began Thursday at the Revap refinery in Sao Jose dos Campos, Sao Paulo state, the company said in a statement.
....
Petrobras says the oil extracted from Tupi is of high quality (29.2 degrees API) with low sulfur content.

"The oil in the Tupi area also is low in naphthenic acids and (is promising in terms of) profitability, since it (is not the type that) produces diesel, which is the lowest value-added product," the statement added.

http://www.rigzone.com/news/article.asp?a_id=81261

[Philippe]

On trouvera une synthèse intéressante sur les découvertes récentes de PETROBRAS dans le bassin de Santos au lien suivant : http://www.spe.org/jpt/print/10/13FDPFocus.pdf. C'est dans l'édition d'octobre 2009 du "Journal of Petroleum technology", l'organe de liaison de la Society of Petroleum Engineers.

Il y a eu 5 découvertes réalisées. Tous les forages d'exploration, d'après le document, ont été positifs, ce qui est remarquable (si vrai).

Il est écrit que PETROBRAS procède à des essais de production prolongés (extended well tests) pour aider à connaître les réservoirs. C'est ce qui explique qu'il ait été expédié un quart de millions de barils de Tupi en raffinerie.

Ils écrivent aussi qu'il va falloir être imaginatif, dans la mesure où l'application des techniques utilisées dans le Bassin de Campos est condamnée à l'échec économique.

Il est enfin écrit que PETROBRAS se fixe l'objectif d'extraire 1 million de barils/jour en 2017, soit dans 8 ans. La montée en puissance se fera par étapes, avec une phrase qui mérite d'être relevée dans le texte, § Strategy for Development : "the phased development aims to (...) balance the expenditures with revenues". En d'autres termes, ils espèrent autofinancer une partie de l'investissement, ce qui, en clair, signifie un développement lent.

[Raminagrobis]

Même si ils y arrivent, un million de b/j en 8 ans, d'un point de vue global, c'est mineur. La déplétion représente environ 3 millions de b/j par an de capacité perdue.

[sceptique]

Il me semble avoir lu que Lula voulait voir ces nouveaux champs en production beaucoup plus vite (2011 ? 2012 ?) !
Je pense qu'il n'était pas au courant des réalités pétrolières ...
Ou alors il a une foi aveugle dans la volonté politique Et il n'est pas le seul !

[energy_isere]

Le quatriéme puits test dans le gisement antésalifére de Tupi confirme un potentiel de 5 à 8 milliards de barils récupérables.

Fourth Well Confirms Tupi's Potential of 5-8 Billion Barrels

Petrobras completed the drilling of the fourth well in the Tupi Assessment Plan area and the results reinforce the estimations of the potential of 5 to 8 billion barrels of recoverable light oil and natural gas in the pre-salt reservoirs of that area, located in ultra-deep Santos Basin waters.

The well, called 3-BRSA-755A-RJS (3-RJS-662A), is located 2,115 meters below the water line, nearly 265 km off the coast of Rio de Janeiro, and 18 km northeast of discovery well 1-RJS-628 (1-BRSA-369), known as Tupi.

A thick section (approximately 250 meters) of reservoirs was drilled and light oil (nearly 28 degrees API) was found, sampled via tests at depths beginning at 4,900 meters. Formation tests aimed to assess reservoir productivity are scheduled to begin in the next few weeks.

The Consortium, formed by Petrobras (65% - Operator), BG Group (25%) and Galp (10%), to explore block BM-S-11, where Tupi is located, will carry on with the activities and investments called for in the Assessment Plan which was approved by the NPA. The also foresees, in addition to the formation test to be done at the mentioned well, the drilling of other wells in the area.

http://www.rigzone.com/news/article.asp?a_id=82408

[energy_isere]

Les brésiliens qui on trouvé le Jackpot avec le gisement de pétrole deTupi on droit au super bonus !
En plus du pétrole ils évaluent maintenant du Gaz à hauteur de 40 trillons de cubic feet.

Sachant que 1000 cubic feet c' est 28.3m3, les 40 TCF de Gaz font environ 1100 milliards de m3 de Gaz.

40 TCF Gas Recoverable from 3 Brazilian Oil Fields

Around 40 trillion cubic feet of natural gas are expected to be recovered from the Tupi, Iara and Guara oil discoveries offshore Brazil, a spokeswoman for BG Group said Wednesday.

The three fields are among the biggest recent oil discoveries in the world, containing between 9.1 billion and 14 billion barrels equivalent of recoverable oil and gas. They are set to transform Brazil into a major oil exporter as the fields come onstream in the next decade.

Confirmation of sizeable gas reserves in the fields -- almost four times Brazil's proven reserves at the end of 2008 -- that could be used for domestic power generation is an added bonus for a country that last week suffered a major blackout in its largest city, Sao Paulo.

BG Group and partner Petroleo Brasileiro SA said Tuesday they are studying using new technology to commercialize gas reserves in these fields by converting them into liquefied natural gas aboard specially constructed ships. The LNG could then be supplied to Brazil or sold on global markets, BG said.

The fields are too far from the coastline and too deep beneath the sea for conventional fixed gas platforms or pipelines to be practical.

http://www.rigzone.com/news/article.asp?a_id=82582

seul bémol, ce Gaz est un peu loin des cotes et la solution Gazoduc ne semble pas étre retenue.
Reste la liquéfaction pour l' amener au Brésil ou le vendre sur le marché international.

[Raminagrobis]

Un terminal de liquéfaction flotant (floting LNG) c'est théoriquement faisable, ça a été plusieurs envisagé (par exemple pour le gisement Kudu au large de la Namibie) et pour Troumbadour (australie), mais à chaque fois cette solution a été écartée pour un choix plus classique.

[energy_isere]

Encore des puits test qui donnenent de trés bons résultats:

Petrobras Cites Record Productivity from Iracema Well Tests

Petrobras November 19, 2009

Petrobras announced that the two formation tests for well 4-RJS-647 (4-BRSA-711-RJS), located in the Tupi Assessment Area, in ultra-deep Santos Basin waters and informally known as Iracema, have been completed and proved the high productivity of the pre-salt carbonate reservoirs. The Iracema well was drilled by Seadrill's West Taurus semisub.

In each of the two tests that were carried out, the flow that was measured was 5,500 barrels per day of light oil (approximately 32 degrees API), limited to the capacity of the equipment used in the testing phase. The well's initial production is being estimated at up to 50,000 barrels of oil per day, proving the Tupi area's high light oil production capacity.

Iracema, in the BM-S-11 appraisal area, was drilled to a depth of 5,000 metres and completed in September 2009. It is located in 2,210 meters water depth, around 250 kilometers off the coast of the State of Rio de Janeiro.

The Consortium, formed by Petrobras (65% - Operator), BG Group (25%), and Galp (10%), will continue with the activities and investments that are required to assess the fields in Tupi, with the drilling of new wells until the Declaration of Commerciality, expected for December 2010.

BG Group Chief Executive Frank Chapman said, "We are delighted with the results of this latest appraisal well, situated 33 kilometers from the initial Tupi well. This provides further evidence of the very large areal extent and prolific nature of the pre-salt discoveries we have made. We will be working closely with our partners to consider the optimum Tupi and Iracema development sequence, following this outstanding result."

http://www.rigzone.com/news/article.asp?a_id=82613

[energy_isere]

Le ministre Brésilien des mines et énergie affirme que le pays commencera la production des vastes champs antésalifére d' ici 5 ou 6 ans. Ils doivent d' abord mettre au point l' aspect legislatif pour que ca reste sous la coupe du gouvernement.

Brazil oil fields to start producing by 2015-Min

Nov 27, 2009

STOCKHOLM, Nov 26 (Reuters) - Brazilian Mining and Energy Minister Edison Lobao said on Thursday his country could start producing oil from its vast offshore crude reserves in 5 to 6 years.

"The sub-salt will start producing in about five to six years," he said, speaking through an interpreter during a visit to the Swedish capital for bilateral talks on bioenergy.

Brazil discovered some eight billion barrels of crude in the Tupi field in 2007, opening a new oil exploration frontier deep below the Atlantic that could hold more than 50 billion barrels.

Lobao said he expected legislation governing exploitation of the oil fields to pass a final vote in Congress early next year.

"I believe that the voting will be concluded by February, or at the latest, March," he said.

He added that using Brazil's sovereign wealth fund to invest part of the country's future oil revenue abroad would help stave off economic problems such as high inflation and excessive currency appreciation.

"There is a vaccine against 'Dutch disease,' which is the formation of a sovereign fund, deposited abroad," Lobao said.

"Dutch disease" refers to problems suffered by resource-rich countries whose non-oil economy declines due in part to currency appreciation, as was the case with the Netherlands in the 1960s and '70s following the discovery of vast reserves of natural gas.

Brazil's sovereign wealth fund, started earlier this year, is worth 0.5 percent of GDP.

President Luiz Inacio Lula da Silva is trying to boost state control over the massive subsalt oil deposits that could turn Brazil into a major energy exporter.

http://uk.reuters.com/article/idUKGEE5AP2F520091127

[energy_isere]

suite de ce post : http://forums.oleocene.org/viewtopic.ph ... 91#p252591

Repsol Betting on Brazilian Subsalt Finds for Growth

http://www.rigzone.com/news/article.asp?a_id=84246

ca dit que l' Espagnol REPSOL va continue demettre en oeuvre le navire de forage "Stena DrillMAX"
(qui coute la bagatelle de 450 000 $ par jour) dans le champs anté salifére de Guara.

The oil found in the Guara field alone will probably add between $2.5 billion and $5 billion in revenue for Repsol, easily outweighing the cost of exploration, he adds.

........
Petrobras Chief Executive Sergio Gabrielli said last month that at an oil price of $45 a barrel, all costs, taxes and levies to pump up oil from subsalt fields would be covered. By comparison, Petrobras had a lifting cost--the cost of pumping oil from the ground--of $22.86 per barrel in the third quarter at its current Brazilian fields, the majority of which are above the salt layer. Petrobras is also Repsol's partner in most of its subsalt oil discoveries.

[energy_isere]

news en rapport avec ce post : http://forums.oleocene.org/viewtopic.ph ... 22#p258322

TECHNIP remporte un contrat de FEED pour une unité flottante de GNL au Brésil

le 21/12/2009

Technip, en association avec JGC Corp. et Modec Inc., a remporté auprès de Petrobras un contrat à prix forfaitaire pour l’ingénierie d’avant-projet détaillé (FEED) d’une unité flottante de gaz naturel liquéfié (FLNG), dans le cadre d’un concours de concept. Le projet est conduit par la joint-venture formée de Petrobras, BG, Repsol et Galp Energia, destinée au développement complexe des réservoirs pré-salifères du bassin de Santos au large du Brésil.

Cette unité de FLNG, d’une capacité d’environ 2,7 millions de tonnes de GNL par an, serait la première unité de ce type au Brésil. La décision finale d’investissement sera prise par Petrobras après réalisation du FEED et analyse des autres options.

Le FEED, qui devra être achevé fin 2010, sera réalisé dans les centres opérationnels de Technip à Paris (France) et Rio de Janeiro (Brésil). Ce contrat est le deuxième contrat de FLNG signé par Technip en 2009 (un contrat avec Shell a été signé en juillet) et confirme le leadership du Groupe en tant que fournisseur de concepts FLNG sur ce marché très prometteur.

Origine : Communiqué TECHNIP

http://www.euro-petrole.com/ne_02_actua ... 308e27db08

[Philippe]

De l'information récente sur les essais en cours de la découverte de Tupi, en mer profonde au large du Brésil :

http://www.spe.org/jpt/print/archives/2 ... TFocus.pdf

Les volumes récupérables (les réserves) du principal niveau producteur sont annoncées entre 0,8 et 1,27 milliard de mètres cubes (entre 5 et 8 milliards de barils ; on peut suspecter que les chiffres initiaux ont été exprimés en barils, et traduits en système métrique pour les besoins de la publication ; le niveau de précision est donc moindre que ce qu'il paraît être au vu des deux chiffres après la virgule).

Il faut noter la teneur élevée en gaz carbonique du gaz associé (8% à 12%), qui va obliger les Brésiliens à une séparation du gaz carbonique, qui sera réinjecté dans le gisement, le reste du gaz ayant, un jour ou l'autre, vocation à être commercialisé.

[energy_isere]

Encore la découverte d' un petit gisement en offshore à Campos :
25 millions de baril récupérable.

de quoi tenir à peine 1/3 de jour de consommation mondiale de plus .

Brazil's Petrobras discovers oil in southeast coast

2010-02-12

Brazil's state-run oil and gas giant Petrobras said Thursday it has discovered oil in the Campos Basin off Brazil's southeastern coast.

Petrobras said the oil field was found during the drilling of the 4-PM-53 well, located in shallow waters about 6 km from the Pampo field, where the company currently produces oil.

Petrobras estimated that the recoverable oil from the well was at about 25 million barrels.

The oil production from the 4-PM-53 well is expected to start this year as the necessary infrastructure is already installed at the site. The initial production may reach 3,000 barrels per day.

The company is considering linking the well to the Pampo platform or to the P-7 platform, which is located in the nearby Bicudo field.

Petrobras said the oil discovery was a result of the company's strategy aimed at intensifying exploration in regions near the existing fields already in production.

http://english.eastday.com/e/100212/u1a5018558.html

[energy_isere]

Encore de nouveaux indices positifs dans un puits d'exploration dans l' antésalifére par la plate forme West Polaris dans la zone BM-S-9 de Santos .



http://www.rigzone.com/news/article.asp?a_id=89233

[geopolis]

Petrobras well at Piracuca field in Santos Basin encounters oil


Brazilian state-run energy company Petrobras notified the country's National Petroleum Agency (ANP) late Friday that a well in the Santos Basin's Piracuca field tested positive for oil. The discovery was made in the 4BRSA781SPS well in the offshore BM-S-7 block. In April 2009, Petrobras and Spain's Repsol YPF declared Piracuca commercially viable, estimating it held recoverable reserves of about 550 million barrels of oil equivalent. Petrobras holds a 63% stake in the block, while Repsol holds 37%.

The well was spudded by the Pride South Atlantic rig to a total depth of 5,175 meters, ANP drilling data showed. Oil companies operating in Brazil must inform the ANP of indications of oil, gas or hydrocarbons in any exploratory well within 48 hours. The disclosures are routine, and do not indicate commercial viability.

Source: Dow Jones