據今日石油網2021年5月14日報道，圭亞那-蘇里南盆地被油氣行業的分析人士視為全球深水勘探的最后一個重要領域。2015年，世界級的圭亞那麗莎大油田發現是當時10年來最大的海上石油發現，迄今為止，麗莎大油田發現在全球深水領域的成功仍是無與倫比的。

　　在今日石油網日前看到的一份全球未來油氣勘探的新研究報告中，韋斯特伍德全球能源集團表示，全球油氣勘探領域在今后5年內將發生很多變化。

　　韋斯特伍德說，“2015年，石油行業受到油價暴跌的影響，結束了100美元/桶的繁榮時期。當時很難看出下一個大的油田將來自哪里。”韋斯特伍德指出，一個由多家公司組成歷時8年鉆取69口探井在晚白堊紀地層尋找“類似”朱比利遠景區的戰役最終仍未能命中這個遠景區。

　　韋斯特伍德說：“2015年在圭亞那發現了世界級的麗莎大油田，這是自2006年在桑托斯盆地發現鹽下油氣藏以來的第一個重大石油發現。”“更重要的是，圭亞那擁有良好的財政條件，麗莎大油田在發現后的4年半時間里就投產。”

　　然而，韋斯特伍德表示，圭亞那-蘇里南盆地的成功高度集中，3個合作伙伴在斯塔布魯克許可區塊發現了85%的資源，美國石油巨頭埃克森美孚公司與其另外兩個合作伙伴迄今已在該區塊發現了超過90億桶油當量的資源。

　　韋斯特伍德表示：“總的來說，自2014年油價暴跌以來，人們更關注周期時間，勘探公司已將更多資金投向探明盆地和正在成熟和已成熟遠景區。”

　　這在2020年尤其明顯，盡管行業受到石油需求暴跌和價格觸底的嚴重打擊，圭亞那-蘇里南盆地的投資仍然強勁。

　　韋斯特伍德認為，除非在其他地方有重大發現，開辟其他盆地，否則未來的熱點地區可能會被目前的地區所主導，比如圭亞那-蘇里南盆地。

　　該咨詢集團表示：“晚白堊紀麗莎遠景區是自巴西海上300億桶鹽下碳酸鹽遠景區發現以來出現的這個最大的新石油遠景區，這個遠景區在2006年發現了圖皮大油田。”

　　今日石油網了解到，在發現圖皮大油田和麗莎大油田之間的9年時間里，全球有超過250家公司參與了超過350口的前沿勘探井，其中70%的勘探井目標是油氣藏，超過一半的勘探井試圖開發新的盆地。

　　韋斯特伍德說：“從發現麗莎大油田以來，在所鉆的159個前沿遠景區中，只有11個前沿遠景區具有潛在商業價值。其中包括2015年在MSGBC晚白堊紀發現了巨大的Tortue天然氣遠景區和2015年在東地中海的碳酸鹽巖中發現了祖爾大氣田。全球自那以來迄今還沒有發現新的石油遠景區。”

　　地球上是否還有數十億桶的石油儲量有待發現?石油行業繼續尋找這些儲量的難度會有多大?人們將拭目以待。

　　李峻 編譯自 今日石油

　　原文如下：

　　Liza could be last major frontier oil play discovered in the world – Westwood

　　The Guyana-Suriname basin is viewed by analysts in the oil and gas industry as potentially the last major frontier for deepwater discoveries. The world-class Liza discovery in 2015 was the biggest offshore oil strike made in a decade at the time and remains unparalleled to this day for deepwater success around the world.

　　In a new study seen by OilNOW with focus on future exploration, Westwood Global Energy Group said much can happen in the exploration world in five years.

　　“In 2015 the industry was reeling from the oil price crash that ended the $100/bbl boom period. At the time it was hard to see where the next big oil play was going to come from,” the company said, pointing out that a multi-company 69 well, 8-year campaign chasing frontier Late Cretaceous Jubilee ‘look-alike’ plays had failed to hit pay.

　　“Then along came the Liza discovery in 2015 in acreage in Guyana that opened a potentially ten-billion-barrel oil province, the first since the presalt Santos in 2006,” Westwood said. “What is more, Guyana boasted excellent fiscal terms and Liza was onstream in four and a half years.”

　　The consultancy group said the success in Guyana-Suriname has been highly concentrated, however, with 85% of the discovered resource captured by the three partners in the Stabroek licence where U.S oil major ExxonMobil has so far found over 9 billion barrels of oil equivalent resources.

　　“Overall, since the 2014 oil price crash there has been more of a focus on cycle times and explorers have been allocating more capital to proven basins and maturing and mature plays,” Westwood said.

　　This was particularly evident over the last year where despite the industry being hit severely by plummeting oil demand and prices bottoming out, investments in the Guyana-Suriname basin remained robust.

　　Westwood believes future hotspots are likely to be dominated by those of the present, such as the Guyana-Suriname province, unless significant discoveries are made elsewhere, opening up other basins.

　　“The Upper Cretaceous Liza play is the largest new oil play to emerge since the 30 bnbbl Pre-salt Carbonate play offshore Brazil that emerged with the Tupi discovery in 2006,” the consultancy group said.

　　OilNOW understands that in the nine years between Tupi and Liza, more than 250 companies participated in over 350 frontier exploration wells globally with ~70% of these targeting oil plays and more than half attempting to open new basins.

　　“Since Liza there have been just 11 potentially commercial discoveries from the 159 frontier play wells drilled,” Westwood said. “These include the giant gas plays in the Upper Cretaceous of the MSGBC (Tortue 2015) and the carbonates of the Eastern Mediterranean (Zohr 2015). There have been no new oil plays opened.”

　　Are there more multi-billion-barrel oil plays out there to be found and how hard will the industry continue to search for them?

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