随着管道注满,二叠纪盆地天然气燃烧将反弹

凯文·克劳利 十一月 15, 2022

(彭博社)据 Rystad Energy 称,由于缺乏将天然气运送到其他地方的管道能力,美国最大页岩油盆地的运营商将大幅增加燃烧到大气中的天然气量。

自疫情爆发以来,二叠纪盆地天然气产量的反弹速度快于石油产量,导致管道实际上已达到极限。到明年下半年,几项主要的管道扩建工程才会投入使用,以缓解短缺问题。

尚未在现有管道上获得空间的生产商面临着严峻的选择:减少天然气产量并停止更有价值的石油生产,或者继续泵送原油并燃烧掉多余的天然气。如果选择后者,则可能会抵消过去几年在解决该行业突出问题方面取得的大部分进展,该问题不仅引起了气候变化活动人士的愤怒,也引起了具有 ESG 意识的投资者的愤怒。 

Rystad 页岩油研究主管亚历山大·拉莫斯-佩翁 (Alexandre Ramos-Peon) 表示,“部分产出的天然气将不可避免地被燃烧掉”。他表示,在排放目标不太严格的私营运营商的推动下,火炬燃烧量可能会占总产量的三倍,达到 3%。

当许多国家因俄罗斯切断供应而努力控制能源成本时,燃烧天然气似乎是一个令人困惑的选择。然而,这种燃料主要是二叠纪更有价值的石油的副产品。抑制天然气产量意味着每桶 90 美元左右的油价会受到损失,这是大多数运营商盈亏平衡成本的两倍。

因此,对于许多公司来说,燃烧天然气更具有经济意义,特别是因为很容易获得德克萨斯州铁路委员会(该州的石油和天然气监管机构)的许可。尽管井口火炬燃烧量还不到 2019 年达到的峰值(每天超过 6 亿立方英尺)的一半,但自那时以来,民间社会团体以及环境、社会和治理投资运动的审查显着加强。 

像 Energy Transfer LP 或 Kinder Morgan Inc. 这样的管道公司通常只在确信有足够的石油或天然气来填充管道时才愿意建造或扩建管道。管道建​​设太早,可能无法获得足够的流量来偿还高昂的前期成本,但建设太晚,可能会出现运输短缺,导致需要火炬。

后者似乎发生在二叠纪。自疫情爆发以来,该盆地的天然气产量增加了 30% 以上,而石油产量仅增加了 12%。与此同时,二叠纪盆地销售中心瓦哈的天然气价格相对于基准亨利中心大幅下跌,上个月甚至出现负值,表明该盆地存在瓶颈。

Diamondback Energy Inc. 首席执行官特拉维斯·斯蒂斯 (Travis Stice) 11 月 8 日表示:“我们认为明年大部分时间,甚至可能到 2024 年,直到一些主要管道开通之前,我们的天然气供应将会非常紧张。”

有证据表明运营商可能已经在加紧燃烧。由于管道实际上已经满了,任何计划外的停电都意味着天然气无处可去。

Rystad 高级分析师 Dzenana Tiganj 表示,“过剩的有效产能非​​常有限,任何维护方面的干扰都会导致二叠纪盆地的火炬燃烧立即增加”。

局部停电的影响可能很严重。

Tiganj 表示,今年 5 月,得克萨斯州霍华德县的天然气收集系统出现问题,导致连接到该系统的私人运营商燃烧了其生产的 40% 的天然气,比平时高出十倍多。

Tiganj 表示,随着问题得到解决,燃烧水平在接下来的几个月里有所下降,但 10 月份霍华德县出现了更多问题的迹象,运营商请求德克萨斯铁路委员会允许燃烧比 5 月份更高的燃烧量。

 

原文链接/worldoil

As pipelines fill, natural gas flaring set to rebound in Permian Basin

Kevin Crowley November 15, 2022

(Bloomberg) – Operators in America’s biggest shale oil basin are set to significantly increase the amount of natural gas they burn into the atmosphere because of a lack of pipeline capacity to ship it elsewhere, according to Rystad Energy.

Permian Basin gas production has rebounded more quickly than oil since the pandemic, leaving pipelines effectively maxed out. It will be the latter half of next year before several major pipeline expansions come online to ease the shortage.

Producers that haven’t yet secured space on existing pipes face a stark choice: throttle back gas and halt more valuable oil production or continue to pump crude and burn off the excess gas. Going for the latter would threaten to undo much of the progress achieved in the last few years to address the industry’s flaring problem, which hasn’t just attracted the ire of climate-change activists but also that of ESG-minded investors. 

“It’s inevitable that some produced gas will just be flared,” said Alexandre Ramos-Peon, head of shale research at Rystad. Flared volumes could triple to 3% of total production, driven by private operators with less stringent emissions targets, he said.

Burning off gas when many countries are struggling to contain crippling energy costs due to Russia cutting off supplies may seem like a puzzling choice. However, the fuel is mostly a byproduct of more valuable oil in the Permian. Choking back gas production would mean losing out on oil prices of around $90 a barrel, double most operators’ breakeven costs.

As a result, for many companies it makes more economic sense to flare off the gas, especially since permits are easy to receive from the Texas Railroad Commission, the state’s oil and gas regulator. While wellhead flaring is less than half the peak of more than 600 million cubic feet per day reached in 2019, scrutiny from civil society groups and the environmental, social and governance investing movement has grown markedly since then. 

Pipeline companies like Energy Transfer LP or Kinder Morgan Inc. typically prefer to build or expand pipelines only when they are confident there will be enough oil or gas to fill them. Build a pipeline too early and there’s a risk of not securing enough flows to repay the high upfront cost, but build them too late and transportation shortages can occur resulting in the need to flare.

It appears the latter is happening in the Permian. The basin’s gas production has increased by more than 30% since the pandemic compared to a rise in oil output of just 12%. Meanwhile the price of gas at Waha, a sales hub in the Permian, has plunged relative to the benchmark Henry Hub, even trading negative last month, indicating a bottleneck in the basin.

“We think our gas takeaway is going to be tight really for most of next year and probably well into 2024 until we get some of the major pipes on,” Diamondback Energy Inc. Chief Executive Officer Travis Stice said Nov. 8.

There’s evidence to suggest that operators may already be stepping up flaring. With pipelines effectively full, any unscheduled outages mean gas has nowhere to go.

“Excess effective capacity is so thin that any kind of upset in maintenance, we’re seeing an instant rise in flaring in the Permian,” said Dzenana Tiganj, a senior analyst at Rystad.

The impact of localized outages can be severe.

In May, problems with a gas-gathering system in Howard County, Texas, meant that private operators connected to it flared 40% of the gas they produced, more than ten times higher than usual levels, Tiganj said.

Flaring levels reduced over the subsequent months as the problem was fixed, Tiganj said, but in October there were signs of more problems in Howard County, with operators’ asking the Texas Railroad Commission for permission to flare even higher volumes than in May.