
據悉,俄羅斯2016年油氣發現量大幅下降,專家們預測,俄油氣或支撐不到2050年!俄羅斯“油氣霸主”之路還能走多遠?
作者 | Viktor Katona
編譯 | 瑩瑩?
2015年全球鉆探活動減少了20%,而2016年下降了更多。2016年全球常規油氣發現量為37億桶,該數值僅能支撐全球45天的原油消耗或僅占全球已探明儲量的0.2%,處于自1952年以來的最低水平,其中俄羅斯勘探開發活動最受影響。
油價下跌、目標制裁,俄羅斯油氣業在過去幾年里一直遭受著雙重打擊。2014年制裁前,俄最大油氣發現Pobeda儲量約為原油1.3億噸,天然氣5千億立方米;而在2015年制裁后,俄羅斯僅有7處油氣發現,其中3處位于波羅的海;2016年,雖然俄油企共發現40處遠景油氣區,但其中最大的Nertsetinskoye油氣區的3P儲量也僅為1740萬噸,制裁前后的情況形成了鮮明對比。
俄羅斯的石油什么時候會用光?
當石油開始走下坡路,俄羅斯是否能繼續位列頂級產油國之列?俄羅斯油氣復蘇能否持續? 該國自然資源與環境保護部門表示,不考慮新油氣發現,當前俄石油儲量為290億噸。
以當前消耗率來計算,俄石油將在2044年耗盡,2P氣體儲量耗盡將在此基礎上推遲160年。對此,俄政府應適當放寬商業政策,如放寬許可證發放政策、增加500平方千米的底土區塊面積等。然而,事實是俄羅斯現仍有大量未開發油氣儲備,政府的激勵措施不應與之混淆。那么這些儲備在哪?
主要產油區更迭
俄羅斯的原油未來將更多考慮油價、地質復雜程度和傳統產油區更迭等因素。2004 – 2005年,西西伯利亞產能從71%降至57%,1970年代,正如西西伯利亞取代了蘇維埃政權時期主要的生產地Volga-Urals區域一樣,如今東西伯利亞和近海地區又將取代西西伯利亞區域。
早在1990年代,由于石油采收率降低及富油區發展速度低于預期,西西伯利亞的產油量一直被預測要走下坡路,因此,俄對主要產油區更迭似乎并不感到意外,但俄油氣業似乎一直在被分析家們所蒙蔽。從1980年代初開始,分析師們就預測俄產油量將下滑。雖然在1996-1999年該國產油量確實減少了,年產油量僅為301-305億噸,但造成這一現象的主要原因是由于該國整體的經濟蕭條,而不是所謂的資源缺乏。
俄羅斯在常規油氣領域的技術已然成熟,但在非常規領域卻不盡然。目前來看,俄油企似乎對頁巖、北極油層和深水項目等非常規項目不那么得心應手,仍需引進西方的非常規油氣開采技術。因此,美國和歐盟針對俄羅斯實施的技術制裁似乎并不是巧合,但制裁并不能長期限制俄羅斯北極勘探活動。
非常規領域或成未來主戰場
北極油層
俄羅斯北極大陸架蘊含豐富油氣資源,大約占其未探明儲量的60%。Kara海域蘊含大量天然氣,該領域是自1983年Murmanskoye氣田(1200億立方米)以來的又一天然氣田發現。北部Barents海域最近也相對活躍,俄聯邦土地管理局認為,未來幾年該海域或能發現頂級油氣藏。目前為止,俄北極大陸架3P儲量為原油5.85億噸,天然氣10.4萬億立方米,但其絕大部分北極油氣資產仍處于粗略評估狀態。
西方油企應意識到,俄政府視北極油層為“國家意義”上的資源,因此俄不可能將該地區資源股份化。在北極油層,Laptev和Chukchi海域目前還沒有進行大規模評估,但對這種投資風險較大的油層,政府也會留有相對自由的開發空間。此外,在聯合國大陸架界限委員會承認Okhotsk海域為俄羅斯飛地后,該區域也可以進行考察和評估了。
未來40-50年,北極大陸架、Timano-Pechora盆地和Yenisey-Khatanga盆地將為俄羅斯維持全球前三大產油國的地位發揮至關重要的作用。此外,俄羅斯油氣發展不僅與北極油氣資源有關,其也將依靠非常規油氣——頁巖。
頁巖油氣
就目前統計數據來看,俄羅斯頁巖儲備僅次于美國,位居全球第二。俄Bazhenov區塊占地100萬平方千米,是全球最大的頁巖沉積層,預計其致密油儲量將達到200億噸,但目前其開發尚處起步階段,若此類稠油層得到合理開發,俄將輕而易舉打敗其競爭對手。此外,Abalak區塊覆蓋了Volga-Urals大部分地區,雖然該區塊目前仍難以進行評估,但其位于傳統油氣生產區,擁有完備的油氣基礎設施。但即使俄頁巖儲備充足,其發展卻仍需面臨諸多因素阻礙。
傳統油氣盈虧平衡值為20-30美元/桶,而俄羅斯致密油則需油價至少維持在55-60美元/桶,這就會在一定程度上阻礙俄非常規油氣的發展。
雖然俄頁巖油氣發展滯后于美國,但這也不見得是一件壞事。預計在“進口替代”政策的支持下,到2020年代,俄油服公司也許能充分利用頁巖補貼,并于2000年代末期,在時間、鉆井成本及作業效率方面超越其競爭對手美國。到那時,也許反俄制裁將只是過去的一個“玩笑”。
常規油氣仍存實力
最后,油氣業也不要低估俄羅斯常規油氣儲備,近年來,由于油氣采收技術不斷提高,使得該國仍需大規??碧交顒?。Astrakhan Oblast州發現了原油儲量3.3億噸的Velikoye油田,而這一發現也直接證明了該國的能源實力。
到2044年,俄油氣儲備是否會真的耗盡?對于這一尚未發生的事,俄羅斯自然能源部無法給出明確回答,且這一說法也僅僅反映了一種固有的保守主義,而不是該國真正的實力。二十一世紀,俄羅斯將仍是全球主要產油國,該國產油中心也將進一步向東北部、深水和鹽下區轉移,當然,成本也會進一步提高!
On a global level, 2015 and 2016 marked the lowest level of new conventional oil discoveries since 1952. In 2016, only 3.7 billion barrels of conventional oil were discovered, roughly 45 days of global crude consumption or 0.2 percent of global proved reserves. Globally, exploratory drilling fell by almost 20 percent in 2015 and fell even further in 2016. Russia’s exploration activities, which were hit not only by plummeting oil prices but also by a targeted sanctions regime, suffered a double blow during this period. In 2015, only seven new hydrocarbon discoveries were made in Russia, three of them in the Baltic Sea. In 2016, oil and gas companies in Russia discovered 40 prospective fields, however, the 3P reserves of the largest among them, Rosneft’s Nertsetinskoye, amounted to 17.4 million tons. This stands in stark contrast with pre-sanction period achievements, for instance, 2014’s largest find, Pobeda, is believed to contain 130 million tons of oil and 0.5TCm of gas.
It is only logical that against such depressive trends, that people start to question the sustainability of Russia’s current oil-producing renaissance (Graph 1). When will Russia run out of oil? Were Sheikh Yaki Zamani’s “Stone age” simile to materialize, would Russia still be among the top producers when oil started its descent towards obsolescence?
The Ministry of Natural Resources and Environmental Protection of Russia states that not accounting for new discoveries, current oil reserves in Russia stand at 29 billion tons and under current consumption rates would be depleted by 2044 (its 2P gas reserves’ depletion would come about in more than 160 years). To this end, it would like to implement business-easing measures, e.g.: facilitate the issuance of licenses and to increase the size of the allotted subsoil block to a maximum of 500 km2 (which would mean a fivefold increase compared to existing regulations). The Ministry’s stimulating measures, however, should not obfuscate the fact that Russia still has vast amounts of untapped reserves waiting to be discovered. But where?
The future of Russian crude lies in oil that is more expensive, more geologically complex and further away from traditional regions of production. Just as West Siberia replaced the Volga-Urals Region in the 1970s as the Soviet Union’s main producing region, East-Siberia and offshore regions will overtake West-Siberia (which saw its share in the national output diminish from 71 percent in 2004-2005 to 57 percent currently). This change of “leaders” is long overdue as West-Siberia oil output was already expected to plummet in the 1990s, yet thanks to extended oil recovery methods and slower-than-expected development of other oil-rich regions it has managed to keep stable output numbers. Russia’s oil sector has been consistently hoodwinked by analysts, who, beginning from the early 1980s predicted an imminent production slump. The production fall did happen, reaching a low-point between 1996 and 1999 when production foundered to 301-305 million tons per year. The cause was to be sought in Russia’s overall economic depression, not in its dearth of resources.
Today, Russian companies are similarly constrained in tackling Russia’s three new oil frontiers – shale, Arctic and deep-water. It is no coincidence that U.S. and EU sanctions targeted the sales of technologies related to these sectors and not conventional – whilst Russian companies are well-equipped to deal with conventional fields, they relied heavily on Western know-how. Yet it is very unlikely that even a tightening of sanctions could stall Russia’s Arctic exploration activities for a longer period of time.
Russia’s continental shelf contains most of the Arctic’s oil formations and approximately 60 percent of its undiscovered reserves. So far, the 3P reserves of Russia’s Arctic stand at 585 million tons and 10.4 TCm, yet most of its Arctic Seas were only superficially appraised. The Kara Sea, whose fields are almost exclusively gaseous, has been in the spotlight since the 1983 of the Murmanskoye gas field (120 BCm), yet the northern parts of the adjacent Barents Sea, which Russia’s Federal Agency on Subsoil Usage deems the most likely to yield top hydrocarbon discoveries in the next few years, are relative newcomers in prospective surveys.
Western oil & gas companies should be aware that the Russian government treats Arctic formations as resources of “federal significance” and it is unlikely to provide them a role other than that of a minority shareholder. There is more maneuvering room for oil formations in the riskier part of the Arctic – the as of yet impossible-to-assess Laptev and Chukchi Seas, where no large-scale surveying has been done. Moreover, after the UN Commission on the Limits of the Continental Shelfacknowledged the Okhotsk Sea as a Russian enclave, the least-researched Russian sea can now be prospected and appraised. Still, the Russian Arctic, along with frontier zones like the Timano-Pechora Basin and the Yenisey-Khatanga Basin, will play an important role in keeping Russia among world’s top 3 oil producers in the next 40-50 years. Yet there is more, Russia’s oil future is not only more Arctic, but also more shale-related.Related: Putin Seeks Greater Influence in Central Asia
Russia has been sitting on vast shale/tight oil reserves, which according to present data are second only to the United States. Yet it might easily surpass all its rivals, as the development of gigantic tight-oil formations, such as Bazhenov Suite, the largest shale deposit in the world covering a territory of more than 1 million km2 and assumed to contain at least 20 billion tons of oil, is still in its infant phase. The potential of the Abalak Suite underlying the Bazhenov, the Domanik Suite, stretching asymmetrically across the Volga-Urals Region from Perm to Orenburg, as well as many others, is still difficult to assess, yet virtually all of them are located in traditional oil-producing regions with a fully-established oil infrastructure. Although the first Bazhenov oil gush dates back to 1969, several factors have hindered the development of Russian tight oil, yet the principal among them was the availability of other, less-costly variants of production. The preference for easier-to-access, less costly formations is aptly reflected in Russia’s curbing of deep-hole exploration drilling (Graph 1).
As Russia’s tight oil needs at least an oil price level of 55-60 USD per barrel, bringing the first fields on-stream is still some way off as conventionals’ breakeven levels are in the 20-30 USD per barrel range. Despite a significant lag compared to the U.S. shale revolution, this might not be that unfavorable for Russia. It is expected that under the aegis of “import substitution”, Russian service companies might be fully up to the task to exploit Russia’s shale bounty by the 2020s, moreover, they are likely to work in an environment with significantly lower drilling costs, time and efficiency rates than their American counterparts in late 2000s (thus yielding more oil). By that time, perhaps, anti-Russian sanctions will be a yesteryear affair.
Lastly, one should not underestimate the tenacity of Russia’s conventional oil reserves, which thanks to enhanced oil recovery techniques and supplementary exploration will remain a force to be reckoned with. As demonstrated by the discovery of the Velikoye field in the Astrakhan Oblast (reserves estimated at 330 million tons of oil), Russia’s pre-salt layers, even in regions previously thought to be on the verge of depletion, might kickstart a new development vector in its energy matrix. As Russia’s Natural Resource Ministry cannot account for events that are still yet to happen, its 2044 depletion assumption reflects merely its inherent conservatism, not the country’s realistic capabilities. By all accounts, Russia will remain a major oil-producing nation throughout the entire XXIst century, with oil production moving to places that are further (north and east), deeper (both deepwater and pre-salt) and generally more costly.
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石油圈認證作者
- 畢業于黑龍江大學英語口譯專業,具有豐富的翻譯工作經驗。致力于觀察國際油氣行業動態,能夠快速、準確傳遞油氣行業最新資訊,提供豐富的油氣信息,把握行業動向,為國內企業提供專業的資訊服務。(QQ:348418756)