健康、安全、环境与可持续发展

评论:上游行业必须接受创新理念以遏制火炬燃烧

减少火炬燃烧的工具唾手可得,但结果将取决于运营商和政府的长期承诺。

用于燃烧过量伴生气的火炬塔顶部。图片来源:GettyImages。
火炬塔顶部用于燃烧掉过量的伴生气。
图片来源:GettyImages。

尽管旨在遏制燃烧行为的雄心壮志和项目不断增加,但全球燃烧量仍在上升。

世界银行呼吁全球共同努力,在2030年前终止常规天然气燃烧。该机构去年发布的报告显示,目前的进展方向与预期相反。据估计,2024年全球天然气燃烧量达1620亿立方米(超过5.7万亿立方英尺),比上一年增加了近30亿立方米(1060亿立方英尺)。

今年发布的最新估算数据显示,全球83%的天然气燃烧量集中在九个国家。按燃烧量降序排列,这九个国家分别是:伊朗、伊拉克、俄罗斯、委内瑞拉、阿尔及利亚、墨西哥、利比亚、美国和尼日利亚。

距离 2030 年目标期限不到 4 年,而燃烧的天然气量仍然相当于整个非洲一年的天然气消费量,很难想象世界上最大的石油生产国能够解决这个问题。

日产量约为190万桶油当量(BOE/D)的壳牌公司表示,已于2025年在其上游运营的项目中消除常规天然气燃烧。这家总部位于伦敦的石油巨头在宣布目标不到4年后就实现了这一目标。

然而,该公司在其2024年可持续发展报告中也指出,其近一半的天然气燃烧排放来自尼日利亚的项目,而这些资产该公司此后已剥离。因此,尽管目标已经实现,但技术似乎发挥的作用有限。

但对于长期致力于资产发展的运营商而言,技术和战略仍然是他们非常重视的因素。

横跨德克萨斯州和新墨西哥州部分地区的特拉华盆地,像德文能源公司这样的运营商一直在努力优化运营,以解决燃烧和强制停产的问题。

德文能源的关键举措是在其油井上安装自动节流阀,而不是依赖现场操作人员前往井场手动限制流量。在去年举行的SPE二叠纪盆地能源大会上,德文能源的工程师表示,这项技术有效缓解了油气流量的突然激增,避免了日处理量高达2万桶的设施发生燃烧和紧急停产的情况。因此,该公司在特拉华州的运营甲烷排放强度下降了90%以上。

二叠纪盆地另一家运营商西方石油公司(Oxy)在其2025年气候报告中表示,自2022年以来,该公司在二叠纪盆地一直保持零常规燃烧。该公司是第一家签署世界银行“零常规燃烧”倡议的美国油气生产商,该公司表示,它采用了新的操作程序并安装了蒸汽回收装置,以最大限度地减少排放和燃烧。

作为其减少天然气燃烧战略的一部分,西方石油公司已在美国获得许可,可以使用超过65口井进行天然气储存。此外,该公司表示,通过增加天然气压缩机和富气注入,已将其在阿曼的业务燃烧量减少了80%。

对于陆上生产商而言,另一种选择正在涌现。去年在SPE 229088号会议上介绍的拖车式系统,旨在将火炬气转化为低碳液化天然气(LNG)。在2024年于德克萨斯州进行的现场试验中,该技术处理了0.5至1.1百万标准立方英尺/天的伴生气,每天生产12至15吨LNG,且无需燃烧或排放。

该系统的开发商,总部位于休斯顿的Macaw Energies公司报告称,单个移动单元可以支持1300马力的燃气发动机,每天可为多达40辆液化天然气卡车提供燃料,或者提供足够的能量每天为大约110辆电动卡车充电。关于这项技术的更多信息,请参阅JPT 二月份的专题文章

阿布扎比国家石油公司 (ADNOC) 近期公布了其自主研发的移动式解决方案的成果,该方案旨在压缩伴生气而非将其转化为液化天然气 (LNG)。在SPE 222264号论文(JPT 在此处进行了摘要)中,ADNOC 的作者解释说,这套移动式井口​​压缩机组在为期 14 天的油井测试中投入使用,每天可收集 350 万标准立方英尺 (MMscf/D) 的伴生气,并将其输送至中央处理设施。

否则这些天然气将被燃烧掉,在部署期间其价值约为 80 万美元。

阿曼石油开发公司 (PDO) 于 2025 年发表的SPE 225463 号论文详细介绍了一种名为旋转叶片压缩机的技术如何帮助其六个加工厂消除火炬燃烧和气体排放。PDO 表示,该项目在降低运营成本的同时,减少了 4.5 万吨二氧化碳排放。

沙特阿美公司还评估了火炬气回收技术,包括液环压缩机,据报道,液环压缩机非常适合处理会缩短弹性体密封件寿命的湿气流或腐蚀性气流。

SPE 227364号文件中,沙特阿美公司的作者指出,这项技术应被考虑用于现有油田和新建油田的“持续采气”项目,理由是其设计简单、维护需求低,并且能够提供无油压缩。简而言之,这些压缩机可以将未经处理的天然气储存起来,以便日后使用,甚至可能实现商业化。

还有另一种方法,需要更大规模的努力。今年1月,伊拉克政府表示,通过扩大伴生气捕集,已将天然气燃烧量减少了70%以上。

此前估计,伊拉克每年燃烧掉6000亿至6350亿立方英尺的伴生气,同时从伊朗进口的天然气量约为其两倍。标普全球的一项分析估计,进口天然气使这个石油资源丰富的国家每年损失约8美元/百万英热单位,而如果伊拉克能够充分利用其自身的伴生气,潜在成本约为2美元/百万英热单位。这一差额每年造成超过10亿美元的价值损失。

伊拉克目前的目标是到2028年消除常规的天然气燃烧,主要途径是利用捕获的伴生气替代发电厂的燃油。这一目标是耗资数十亿美元的“天然气增长综合项目”(GGIP)的核心,该项目依靠包括道达尔能源和卡塔尔能源在内的外部合作伙伴来提供资金并建设新的基础设施。

GGIP项目一期工程旨在从伊拉克南部油田开采1.6亿立方英尺/天的天然气,并将其转化为1.5吉瓦的电力,足以满足约150万伊拉克家庭的用电需求。该项目一期工程预计将于今年投入运营。

这些例子表明,大幅减少火炬燃烧所需的技术和专业知识已经存在。它们也清楚地表明,管理选择和国家优先事项同样重要,否则,常规火炬燃烧将继续成为行业实现减排目标的障碍。

延伸阅读

SPE 225463 实现零常规燃烧:天然气回收的最佳实践和技术, 作者:HN Al Rashdi、HS Al Kasbi、AS Al Hinai 和 KH Al Hatmi,阿曼石油开发公司。

SPE 229088 从火炬到电力:经现场验证的移动式液化天然气技术在油田脱碳和离网能源使用案例中的应用, 作者:S. Hbaieb、H. Bizzo Sotomayor 和 G. Sotomayor,Macaw Energies。

SPE 222264 利用零火炬技术减少温室气体排放以增强可持续性, 作者:Z. Ahmad、MM Albadi、S. Chitre、EA Al Mheiri、A. Shaker、AA Al Hosani 和 MA Alzeyoudi(ADNOC Onshore);以及 G. Nastase(Bin Jabr Energy)。

SPE 227364 通过火炬气回收系统 (FGRS) 将火炬气转化为能源, 作者:AH Alghamdi,沙特阿美公司。

原文链接/JPT
HSE & Sustainability

Comments: Upstream Industry Must Embrace Bright Ideas To Curb Flaring

The tools to reduce flaring are well within reach, but the results will depend on a long-term commitment by operators and governments.

The top of a flare stack used to burn off excessive associated gas. Source: GettyImages.
The top of a flare stack used to burn off excessive associated gas.
Source: GettyImages.

Flaring volumes are rising globally even as ambitions and projects aimed at curbing the practice continue to grow.

The World Bank, which has called for a global effort to end routine flaring by 2030, reported last year that the needle is moving in the wrong direction. An estimated 162 Bcm of natural gas (more than 5.7 Tcf) was flared worldwide in 2024, up by nearly 3 Bcm (106 Bcf) from the previous year.

Updated estimates released this year show that just nine countries account for 83% of global flaring volumes. In descending order, they are Iran, Iraq, Russia, Venezuela, Algeria, Mexico, Libya, the US, and Nigeria.

With less than 4 years remaining until the 2030 target, and flared volumes still equivalent to all of Africa’s annual gas consumption, it is difficult to imagine enough of the world’s largest oil producers reaching the finish line on this issue.

Shell, which produces around 1.9 million BOE/D, said it eliminated routine gas flaring across its upstream-operated projects in 2025. The benchmark was achieved less than 4 years after the London-based supermajor announced its goal.

However, the company also noted in its 2024 sustainability report that almost half of its flaring came from projects in Nigeria, assets it has since divested. So, while a target was met, technology appears to have played a limited role.

But for operators with long-term commitment to their assets, technology and strategy remain very much on the table.

In the Delaware Basin, which spans parts of Texas and New Mexico, operators such as Devon Energy have worked to optimize operations to address both flaring and forced shut-ins.

The key step for Devon was installing automated chokes on its wells rather than relying on field operators to travel to wellsites and manually restrict flow. At the SPE Permian Basin Energy Conference last year, Devon engineers said the technology has mitigated sudden surges of oil or gas that can trigger flaring and emergency shutdowns at facilities handling as much as 20,000 B/D. As a result, the methane intensity of the company’s Delaware operations has dropped by more than 90%.

Fellow Permian Basin operator Occidental Petroleum (Oxy) said in its 2025 climate report that it has maintained zero routine flaring in the Permian since 2022. The company, which was the first US oil and gas producer to sign the World Bank’s Zero Routine Flaring initiative, said it adopted new operating procedures and installed vapor recovery units to minimize both venting and flaring.

Oxy has also secured permits in the US to use more than 65 wells for gas storage as part of its flaring-reduction strategy. In addition, the company said it has reduced flaring at its operations in Oman by 80% by adding gas compressors and through rich-gas injection.

Another option is emerging for onshore producers. Presented last year in SPE 229088, a trailer-mounted system was designed to convert flared gas into low-carbon liquefied natural gas (LNG). During field trials conducted in Texas in 2024, the technology processed between 0.5 and 1.1 MMscf/D of associated gas, producing 12 to 15 tons of LNG per day with zero flaring or venting.

The company behind the system, Houston-based Macaw Energies, reported that a single mobile unit can either support 1,300 horsepower of gas-engine capacity, fuel up to 40 LNG trucks per day, or provide enough energy to charge approximately 110 electric trucks daily. More on this technology can be found in a JPT feature article from February.

The Abu Dhabi National Oil Company (ADNOC) has recently shared results of its own mobile solution that is designed to compress associated gas rather than turn it into LNG. In SPE 222264, a 2024 paper synopsized by JPT here, authors from ADNOC explained that the mobile wellhead compressor unit was deployed during a 14-day well test, capturing 3.5 MMscf/D of gas and routing it to a central processing facility.

The gas, which would otherwise have been flared, represented a value of approximately $800,000 over the deployment period.

A 2025 paper, SPE 225463 by Petroleum Development Oman (PDO), details how a technology called a rotary vane compressor helped eliminate flaring and gas emissions from six of its processing facilities. PDO said the project reduced operating costs while removing 45,000 tons of CO2 emissions.

Saudi Aramco has also evaluated flare-gas recovery technologies, including liquid ring compressors, which are reportedly ideal for wet- or corrosive-gas streams that can shorten the lifespan of elastomer seals.

In SPE 227364, Aramco authors said the technology should be considered for “continuous recovery” in both brownfield and greenfield applications, citing its simple design, low maintenance requirements, and ability to provide oil-free compression. In a nutshell, the compressors allow unprocessed gas to be stored and used later—or possibly monetized.

There is another approach that involves a much larger-scale effort. In January, the Iraqi government said it had reduced flaring by more than 70% through the expanded capture of associated gas.

Previously, Iraq was estimated to flare between 600 and 635 Bcf of associated gas each year while importing roughly twice that volume from Iran. An S&P Global analysis estimated that the imported gas was costing the oil-rich nation about $8/MMBtu, compared with a potential cost of roughly $2/MMBtu if it were able to fully use its own associated gas. That gap translates into more than $1 billion in lost value each year.

Iraq is now targeting the elimination of routine flaring by 2028, largely by using captured associated gas to replace fuel oil in its power plants. That goal is at the center of a multibillion-dollar Gas Growth Integrated Project (GGIP), which relies on external partners including TotalEnergies and QatarEnergy to help finance and build new infrastructure.

One phase of the GGIP seeks to capture 160 MMscf/D of gas from Iraq’s southern oil fields and convert it into 1.5 GW of electricity, enough to supply power to roughly 1.5 million Iraqi households. This phase of the project is expected to come online this year.

These examples show that the technology and expertise needed to significantly reduce flaring already exist. They also make clear that management choices and national priorities are just as important, and without them routine flaring will continue to be an obstacle to the industry’s emissions goals.

For Further Reading

SPE 225463 Achieving Zero-Routine Flaring: Best Practices and Technologies for Gas Recovery by H.N. Al Rashdi, H.S. Al Kasbi, A.S. Al Hinai, and K.H. Al Hatmi, Petroleum Development Oman.

SPE 229088 From Flare to Power: Field-Proven Mobile LNG Technology for Decarbonizing Oilfield and Off-Grid Energy Use Cases by S. Hbaieb, H. Bizzo Sotomayor, and G. Sotomayor, Macaw Energies.

SPE 222264 Reducing GHG (Greenhouse Gas) Emissions by Using Zero Flare Technology to Enhance the Sustainability by Z. Ahmad, M.M. Albadi, S. Chitre, E.A. Al Mheiri, A. Shaker, A.A. Al Hosani, and M.A. Alzeyoudi, ADNOC Onshore; and G. Nastase, Bin Jabr Energy.

SPE 227364 Turning Flared Gas Into Energy via Flared-Gas Recovery System (FGRS) by A.H. Alghamdi, Saudi Aramco.