油气行业的上游改革:机会终于来了?
文|Angus Rodger 伍德麦肯兹(Wood Mackenzie)上游行业研究总监
导 读
尽管面临许多挑战,国际石油公司仍然对中国上游产业保持着浓厚的兴趣
● 对油气行业上游改革的思考
● 开发中国页岩气如吃螃蟹
● 国家石油公司的投资良机?
● 胜利页岩油
今年3月,中国政府在同一周宣布了两项油气上游改革政策, 我们将在下文讨论这些上游改革政策对国际石油公司的影响,同时分享中国页岩气行业所面临的挑战。
对油气行业上游改革的思考
翘首以待的中国上游改革迎来了两项新政,引发了人们的热切关注。一是发改委取消了对石油天然气(含煤层气)对外合作项目总体开发方案审批,
改为备案。二是油气勘查开采准入限制放开。十三届全国人大二次会议批准的2019年国民经济和社会发展计划提到“放开油气勘查开采准入限制,积极吸引社会
资本加大油气勘查开采力度”。准入限制的放开主要针对国有企业和私营企业,并不包括国际石油公司。虽然具体的细节尚不清楚,但我们相信,对进入上游的企业
的资本要求、勘探经验和技术门槛均已有所改变。
鼓励上游投资以保障国家能源安全是改革的主要动力。多元化的上游企业格局是中国政府希望看到的,即国家石油公司和国有企业以及私营企业共同参与油气勘探。但
是,具有勘探前景的陆上区块目前基本都已被中石油和中石化登记。为了吸引多方投资,中国政府需要实行更严格的区块退出机制。中石油和中石化为了不让已登记
的区块被政府收回而积极实施矿权内部流转,尽可能将好的区块保留在内部轮转,将剩余的区块与国内企业合作。因此,尽管相对封闭的国内上游市场迈出了开放的
一步,但这并不意味着门户大开。根本问题在于有前景的区块哪些企业,什么时候才有机会进入。
对外合作项目总体开发方案审批的取消有一定的积极意义。通常有外方参与的产量分成合同(PSC),特别是煤层气合同,开发方案审批是一个持久且漫长的过程。
尽管这一流程的取消有助于加快监管办理手续,但如何备案仍不明朗。同时开工前的环评、节能、用地用海的审批将会有所加强。由于国际石油公司在中国的主要合
作项目均已投产,我们预计这一变革在短期内没有显著的影响。
开发中国页岩气如吃螃蟹
翘在中国能源周,中石化公司坦率地陈述了中国页岩气的发展方向及面临的挑战,让人受益匪浅。就在今年2月,四川省荣县发生三次五级地震,当地居民集体抗议并
质疑罪魁祸首是当地大规模开采页岩气。中石油被迫暂停了附近的页岩气开采作业。但官方的的回应是:
该地区的地震活动由来已久,尽管压裂可能引发“小的地震”,但绝不会达到5级这样的强度。
四川从古至今经历了无数次的地震。不仅导致了错综复杂的地质构造使页岩气开发变得相当困难,也如一位专家所言,“地震摧毁了许多的油气资源”。可想而知剩余资源的勘探开发多么艰难。
开发中国页岩气被一位国家石油公司的专家比喻成吃螃蟹,“你需要借助许多的工具,颇费工夫,但只获得些许美味的蟹肉。”相比之下,开发美国页岩资源容易许多。
中石化的页岩气项目面临多方面的挑战。同时在技术和油藏管理方面,中国和美国还存在明显的差距。中石化特别提到他们正在积极寻求地质导向技术的突破。
另一个广受关注的是页岩气补贴。尽管钻井与完井成本较2014年开发初期降低了一半,但中国页岩气项目的经济效益仍微乎其微。中石化和中石油需要依赖页岩气
补贴来改善现金流。但补贴已从2012年至2015年的2.2美元/千立方英尺缓慢下调到2019年至2020年的1.1美元/千立方英尺并将于2020
年终止。两家国家石油公司正努力争取补贴延长,我们认为实现的可能性很大。但补贴数额会逐年减少,促使作业者尽可能削减成本并提高气井的经济效益。
由此我们进一步调低了中国页岩气产量的期望值。中国政府希望2020年全国页岩气产量达到300亿立方米(近30亿立方英尺/日)。但我们认为2020年的
页岩气产量离实现这一目标有很大的差距。我们仅估计15亿立方米(14.7亿立方英尺/日)的页岩气产量——即目标的一半。
页岩气勘探开发起步较晚、但整体规模较大的中石油目前正在加速开发四川页岩气。我们预计中石油的页岩气产量将在2020年超过中石化。
页岩气产业发展仍面临诸多的挑战,比如较低的页岩气单井产量,油田服务供应链瓶颈等。伍德麦肯兹不久将发布一份报告,细致深入地探究我们对中国页岩气发展的见解和预测。
国家石油公司的投资良机?
尽管面临许多挑战,国际石油公司仍然对中国上游产业保持着浓厚的兴趣。由于陆上缺乏高质量的油气开采机会,国际石油公司转而关注海上或非常规石油天然气。
相较于机会较少,勘探开发较成熟的浅水,深水油气是大多数国际石油公司关注的焦点。近年来,中海油在琼东南盆地成功发现了拥有5.8万亿立方英尺地质储量的
陵水深水大气田。这么大的气田会受到国际石油公司的青睐吗?首先此气田并非整装大气田,
它包括至少6个小型气田。另外中海油将首次使用半潜式生产平台开发此气田,加剧了成本支出和开发复杂性。
陵水气田会是国际石油公司的投资良机吗?让我们先看看中国的深水开发现状。荔湾是中国第一个深水开发项目,由哈斯基(Husky)在2007年发现,并于
2014年投产。浅水区由中海油运营,哈斯基运营深水区。2018年2月,中海油有限公司投资决策委员会全票通过陵水(中国第二大深水)天然气开发项目。
在我们看来,中海油想通过此项目向世界证明它是一家值得信赖的深水油气开发商,这将有利于它在墨西哥和巴西施展雄心抱负。
胜利页岩油
另一个受到关注是中国非常规石油的潜能。2019年4月,壳牌与中石化签署了一项联合研究协议,共同勘探开发胜利油田东营凹陷的页岩油。胜利油田是中石化最大的油气田分公司。
这意味着壳牌成为继赫斯(Hess)之后第二家与中国国家石油公司签署非常规石油联合研究协议(JSA)的外资公司。赫斯在本世纪初与中石油签署了联合研究
大庆和三塘湖盆地非常规石油的协议。但由于项目进展不顺利,赫斯在2014年底退出了这两个项目。自那以后,非常规石油的勘探开发进展缓慢。目前非常规石
油的产量不足中国原油产量的2%。中石化已在东营凹陷地区钻了20多口页岩油井,但结果好坏参半。我们期望壳牌能在此次联合研究中取得成功。
随着大多数油田的迅速枯竭,中国政府已敦促国家石油公司提高国内石油产量。非常规石油的开发有助于提高中国石油产量,但关键在于国家石油公司是否具备足够的
技术和专业知识来开发此类油田。胜利油田拥有超过40亿桶的石油储量,但据我们估计,剩余储量不足7.5亿桶。相对于几乎没有上升空间的常规石油,非常规
石油有可能扭转胜利油田的命运。
退一步说,这让我们看到中国最富有、最具前景的盆地仍然具有可观的资源潜力。矿权的取得以及提出一个能抗衡其在全球的其它业务的商业主张等仍然是国际石油公司面对的挑战。正在进行的上游改革可能会起到一定的积极作用,但迄今为止并没有改变上游行业的游戏规则。
英文版:
China's upstream reform: opportunities at last?
By Angus Rodger Upstream research director, Wood Mackenzie
In March Wood Mackenzie co-hosted the China Energy Week event in Beijing, where we interacted with a range of international oil companies (IOCs), domestic national oil companies (NOCs) and other local players. The timing could not have been better, as we also had plenty of opportunity to discuss the government's latest upstream reforms, announced that same week.
We fielded many questions on what the changes mean and the opportunities they might create, which we address below. We also share what we learnt about new-found challenges for China's shale gas industry, and what this all means for the IOCs already in-country.
Reading between the lines
Two unexpected changes to China's long-held upstream regulatory structure are attracting attention. Firstly, the administrative process of field development approval (ODP) for projects with foreign participants is being replaced by a process cryptically entitled 'filing'.
The other change is to lift existing upstream entrance restrictions. This was announced in the 2019 National Economic and Social Development Plan, at the 13th National People's Congress held earlier in March. The relaxation of entrance restrictions applies primarily to state-owned and domestic private companies, and does not explicitly mention international oil companies (IOCs). Exact details are thin on the ground, but we believe thresholds for capital requirements, exploration experience and technology have all changed.
Our view on what it means: Encouraging upstream investment is the primary driver for reform, to help achieve the longer-term goal of improving national energy security. Ultimately, the Chinese government wants a more diverse corporate landscape than it has at present, featuring NOCs plus other state-owned domestic entities and private companies.
However, all of the entities we spoke with shared one opinion – that the quality and prospectivity of the blocks currently being offered is not sufficiently attractive. Onshore acreage opportunities so far have been on the fringes of basins, far from the main fairways.
We believe stricter NOC relinquishment is required to release more prospective acreage. So far, the NOCs have avoided this step, circulating the better blocks internally and offering the leftovers for co-operation with domestic players. So although loosening entry requirements in a relatively 'closed' domestic market is a step in the right direction – and met with tentative optimism by IOCs – it’s not an open door. The real question remains: when will higher quality acreage be made available, and to whom?
The other change was to ODP approval. This has traditionally been a long, drawn-out process for PSCs with foreign participants, particularly CBM. Although its removal should help to speed up the regulatory process, the shape of what will replace it remains unclear. And we note approvals for environmental assessments, energy saving and land usage have been strengthened. As most of the major IOC projects in China are already in production, we do not expect this change to have a notable short-term impact.
China shale – complex like… crab?
At the China Energy Week event, it was fascinating to hear state player Sinopec talk frankly about where it saw China shale development heading next, and the biggest challenges to growth. Earthquakes were unsurprisingly front of mind following the three Richter 5 events that shook Sichuan province in February, disrupting nearby shale gas production in the process.
Local communities in the affected area have protested that NOC drilling operations are to blame. The official response is that the region has a long history of seismic activity, and while fracking could cause a 'mini-quake', it is extremely unlikely to have caused a Richter 5 event.
Sichuan's seismic past is both a short- and long-term issue. The thousands of quakes that have struck the mountainous zone over time have not only contributed to the intricate 'broken' geology that so complicates shale development, but also "destroyed a lot of our oil and gas resources", as one official put it. So what is left is not easy to find or extract.
We thought one memorable anecdote from an NOC executive nailed it. He suggested developing China’s marine-deposited shale was like eating crab – “you need lots of tools, it’s really hard work and all you get are these tiny slivers of sweet meat.” Developing US shale was a far easier feast by comparison.
The company acknowledged other challenges too. To our surprise, it admitted there was a clear knowledge gap in technology and reservoir management between China and the US. Well geosteering was called out as an area where it needs to catch up, specifically to navigate Sichuan's complex and convoluted reservoirs.
A third issue is government subsidies for shale production, which will end in 2020. Chinese NOCs rely on these subsidies to improve cash flow from what remain marginal projects. But the price support is ramping down, from US$2.2/mcf in 2012-2015 to US$1.1/mcf in 2019-2020.
Despite halving overall drilling and completion costs since 2014, shale gas economics remain marginal in China. The NOCs are lobbying hard to have the subsidies extended, and it’s likely they will be. But again, at a slowly decreasing rate, forcing operators to continually cut costs and improve well economics.
Our view: The underlying message was one of reduced expectations. The Chinese government has set a 30-bcm (almost 3-bcfd) target for shale production by 2020, and we don't see that being achieved, by some margin. We model shale hitting 15 bcm (1.47 bcfd) by 2020.
The challenges are numerous but include well performance at Sinopec's projects, and supply-chain bottlenecks hampering PetroChina from hitting ambitious drilling targets. But from a slower start, the larger PetroChina is now catching up with Sinopec, and we expect China's largest NOC to overtake its smaller rival's shale output in 2020.
Wood Mackenzie will soon be completing a deeper dive report into how and why our shale gas forecast for China is changing.
IOCs in the mix
One takeaway from the week was that IOCs remain keenly interested in Chinese upstream opportunities, despite the obvious challenges. Frustration with the quality of the onshore opportunities being offered has led many to instead look at offshore or unconventional oil.
But there are issues here too. With a well-explored shallow water offering smaller pickings, most eyes are on the deep water. CNOOC has enjoyed exploration success over the past few years in the Lingshui area in the Qiongdongdan basin, south of Hainan island.
But while the prospectivity looks good for further discoveries, are the fields actually big enough to move the needle for the Majors? The 5.8 tcf found to date in the Lingshui area is from an accumulation of at least six smaller fields, and therefore not underpinned by one big find. Which in deep water spells extra cost and complexity, particularly given CNOOC will be using a semi-submersible floater for the first time.
Does that make Lingshui an IOC investment opportunity? To evaluate that, you have to first look at the bigger picture. Liwan was China's first deepwater development, found by Husky in 2007 and onstream by 2014. CNOOC operated the shallow-water element and Husky the deep water. Fast-forward to Q1 2018 and CNOOC sanctioned the country's second deepwater gas development – Lingshui – with a 100% interest. In our view, CNOOC is determined to prove to the outside world it is a credible deepwater developer, a key calling card for its ambitions in Mexico and Brazil.
Shale oil at Shengli
The other opportunity that is taking attention is Chinese unconventional oil potential. In April Shell signed a joint study agreement (JSA) with Sinopec to develop shale oil in the Dongying Sag area of the Shengli oil field. Shengli in Shandong Province is China's second-largest oil complex, after PetroChina's Daqing, and is Sinopec Corp's largest domestic upstream asset.
What does it mean: Shell becomes the second foreign company to sign an unconventional oil JSA with a Chinese NOC, following two Hess agreements with PetroChina earlier this decade. However, it will be hoping to be more successful, as both the Hess operations – one in Daqing, and the other in the Santanghu basin – were dissolved by end-2014 due to unsatisfactory progress.
Since then NOC development of shale oil has been slow, and it currently makes up less than 1% of China's crude output. The potential of the Dongying Sag area has been noted by Sinopec, who have already drilled over 20 wells but with mixed results.
The Chinese government has urged NOCs to lift domestic oil output, as most fields are depleting rapidly. The development of unconventionals could boost production, but there are questions over whether the NOCs have insufficient technology and expertise to capitalise. Shengli originally held over four billion barrels of commercial oil, but today we estimate there are less than 750 million barrels are left to be produced. With large in-place resources, but little upside from existing conventional production, there is potential for unconventional oil to turn the fortunes of this giant around.
Taking a step back, such opportunities offer a tantalising glimpse of the potential that could still lie within China's richest, most prospective basins. But the hurdles to gain access, and then come up with a business proposition that can compete within IOC's global portfolios are many. Ongoing upstream reforms may offer some encouragement, but they haven't changed the rules of the game so far.
Author | Angus Rodger
Upstream research director, Wood Mackenzie
Design | Sun Ziyue