[Découvertes] de nouveaux gisements de pétrole

[GillesH38]

la page française fait bien la différence :

https://fr.wikipedia.org/wiki/Pétrole_n ... de_schiste

schistes bitumineux = oil shale : des roches contenant du kérogène, précurseur du pétrole "pas encore fini" mais dont on peut extraire des hydrocarbures par traitement thermique. Ressources énormes mais peu productives

le pétrole de schistes léger, ou tight oil ou light tight oil (LTO), parfois aussi appelé shale oil mais avec une confusion avec le précédent, qui est du pétrole normal mais dans des petites poches étanches, c'est lui qui est extrait actuellement en grande quantité avec la fracturation hydraulique. Grand potentiel pour le rythme d'extraction car c'est une extraction de surface qui permet de forer plein de petits puits, mais en revanche ressource limitée et épuisement proche en vue ...

sables bitumineux comme en Athabasca, la il s'git au contraire de pétrole vieux et oxydé, mais on peut aussi en tirer des hydrocarbures en les traitant avec du gaz et de l'eau. Grandes réserves mais minage solide donc rythme d'extraction limité.

[energy_isere]

L'heure du bilan pour 2022 :

New Discoveries Make 2022 Highest Value Year In Over A Decade

by Bojan Lepic|Rigzone Staff|Tuesday, January 31, 2023

New global oil and gas discoveries in 2022 drive exploration to highest value creation in over a decade with major discoveries in Namibia, Brazil, and Algeria leading the way.

The global oil and gas exploration sector had its strongest year in 2022 in more than a decade. In its work to improve portfolios by adding lower-carbon, lower-cost advantaged hydrocarbons, the sector created at least $33 billion of value and achieved full-cycle returns of 22%, at $60 per barrel Brent prices, according to a recent report from Wood Mackenzie.

WoodMac said that exploration well numbers were less than half the numbers during pre-pandemic years, yet the total volume of 20 billion barrels of oil equivalent matched the average annual volumes of 2013-2019.

“2022 was a standout year for exploration. Volumes were good, but not stellar. However, explorers were able to drive very high value through strategic selection and focusing on the best and largest prospects. The discoveries bring higher-quality hydrocarbons into companies’ portfolios, allowing them to reduce carbon by displacing less advantaged oil and gas supplies while also meeting the world’s energy needs,” said Julie Wilson, Director of global exploration research at Wood Mackenzie.

“The highest value came from world-class discoveries in a new deepwater play in Namibia, as well as resource additions in Algeria and several new deepwater discoveries in Guyana and Brazil, where the latest wave of pre-salt exploration finally met with success. The average discovery last year was over 150 million barrels of oil equivalent, more than double the average of the previous decade,” Wilson added.

Liquids accounted for 60% of new resources discovered, according to the report. This is only the third time in 20 years that liquids made up the majority of new discoveries.

“There is a lot of uncertainty in future long-term demand scenarios for oil. Explorers are accelerating oil exploration to meet near and mid-term demand, while gas exploration was focused in geographies that can supply the gas-hungry European market. In some cases, major leases are approaching expiration of the exploration term and companies are pushing to optimize their value. By 2030, fast-tracked development of these new discoveries could deliver 1 million barrels per day in oil and 0.5 million barrels of equivalent per day gas production, generating $15 billion in free cash flow,” Wilson claimed.

Majors and NOCs dominate

The exploration sector continues to be dominated by national oil companies and majors, with TotalEnergies, QatarEnergy, and Petrobras leading the way in net-new discovered resources in 2022. In total, NOCs and majors accounted for almost three quarters of new resources discovered.

“Overall, we saw a year of continued discipline from explorers with exploration and appraisal well numbers largely flat from 2021. However, spend per well increased due to inflationary pressures. Appraisal well numbers increased as companies push towards final investment decisions in this short-term window of opportunity,” Wilson concluded.

https://www.rigzone.com/news/new_discov ... 7-article/

[energy_isere]

bilan du 1er semestre 2023 :

Conventional Discovered Oil and Gas Volumes Falling to New Lows

by Andreas Exarheas|Rigzone Staff|Tuesday, August 08, 2023

That’s what Rystad Energy research shows, the company highlighted in a new release sent to Rigzone, adding that its estimates show that in the first half of 2023, explorers found 2.6 billion barrels of oil equivalent (boe), which the company said was 42 percent lower than the first half of 2022 total of 4.5 billion boe.

Rystad revealed in the release that 55 discoveries have been made from January to June this year, “compared to 80 in the first six months of last year”. The company noted in the release that this means discoveries in 2023 have averaged 47 million boe, which it said is lower than the 56 million boe per discovery for the same period in 2022.

In the release, Rystad stated that, “in the hunt for new resources”, exploration companies are prioritizing the offshore sector. The offshore industry accounted for about 95 percent of exploration spending this year to date, but only about two-thirds of discovered volumes, the company highlighted in the release.

In a chart included in the publication, Rystad revealed that annual global conventional exploration spending is expected to top $50 billion in 2023. This figure came in below $50 billion in 2022 and just above $40 billion in 2021, according to the chart.

“Upstream companies are facing a period of uncertainty,” Aatisha Mahajan, the Vice President of Upstream Research at Rystad Energy, said in a company statement.

“They are eager to capitalize on the increased demand for fossil fuels and find additional resources, but recent results have been lackluster,” Mahajan added.

“If exploration efforts continue to yield unimpressive results for the remainder of the year, 2023 could be a record-breaker for the wrong reasons,” the VP continued.
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https://oilprice.com/Energy/Energy-Gene ... rises.html