研究表明，国内生产的天然气平均比进口液化天然气天然气清洁四倍。这是因为气体转移的方式以及在某些情况下的提取方法。挪威的碳强度是所有液化天然气进口中最低的，为 33 kgCO2/boe，秘鲁最高，为 90，平均达到 79，而英国天然气的碳强度仅为 21 kgCO2/boe。

碳强度是指生产每桶油当量产生的二氧化碳排放量。

造成排放量明显差异的主要原因是液化过程——将气体转化为液体进行运输，然后通过海运进行运输，最后再气化，将液体变回气体以便可以使用。

报告显示，英国约 63% 的天然气供应是进口到该国的，其中 187mmboe 通过液化天然气，156mmboe 通过液化天然气。英国生产了其天然气供应的 38%（2022 年），总计 206mmboe。然而，这 38% 的排放量仅占与天然气供应相关的总排放量的 24%，而来自美国的液化天然气尽管只占供应量的 14%，但却占排放量的 35%。

目前，石油和天然气约占国内能源需求的四分之三，官方预测表明，即使需求减少，它们在向净零过渡的过程中仍将继续发挥重要作用。

帮助实现英国能源安全和实现净零排放是齐头并进的。分析显示，国内生产的天然气产生的排放量明显低于进口平均水平，而继续在英国尽可能清洁地生产天然气将有助于推动减排。

NSTA 目前正在评估第 33 轮石油和天然气许可轮中收到的 115 个许可证投标，以期在今年晚些时候颁发许可证。这些新许可证将有助于确保能源安全，并通过减少对肮脏、碳密集型天然气进口的依赖来支持减排运动。

然而，在国内解决排放问题也至关重要，因此 NSTA 已经从英国首轮碳储存许可中提供了 21 个碳储存许可证，这些地点可储存高达英国年度排放总量的 10% 。

该机构与工业界合作，在过去五年中帮助其将火炬和放空造成的排放量减少了 50%，并发布了指导意见，明确表示到 2030 年将禁止所有人进行常规放空和火炬燃烧。

此外，NSTA 正在与政府和行业合作支持平台电气化，向行业阐明我们现在需要进行投资的期望。

NSTA 对能源转型的承诺体现在，干预措施已减少了 390 万吨二氧化碳当量的终生排放，相当于一年减少了 190 万辆汽车上路。

NSTA 战略总监 Hedvig Ljungerud 表示：“这一分析强调了只要我们消费天然气，就继续尽可能清洁地生产我们自己的天然气，以支持国内能源安全和推动净零排放的好处。” “NSTA 将继续与工业界合作，推动减排，同时支持能源转型。”

在线阅读文章：https://www.oilfieldtechnology.com/drilling-and-products/31072023/north-sea-gas-is-almost-four-times-cleaner-than-imports/

The research shows that domestically produced gas is on average almost four times cleaner than importing gas in LNG form. This is because of both the way the gas is transferred and, in some cases, the methods of extraction. Norway has the lowest carbon intensity of all LNG imports at 33 kgCO2/boe, and Peru the highest at 90, with the average coming to 79, while UK gas has a carbon intensity of only 21 kgCO2/boe.

Carbon intensity is the amount of CO2 emissions created per boe produced.

The primary causes for the stark difference in emissions are the process of liquefaction – turning the gas into liquid for transport - then transportation via shipping, and finally regasification, turning the liquid back into gas so it can be used.

The report shows that around 63% of UK gas supply is imported into the country, 187mmboe via and 156mmboe from LNG. The UK produced 38% of its gas supply (in 2022), a total of 206mmboe. Yet that 38% was responsible for only 24% of total emissions associated with gas supply, whereas LNG from the US was responsible for 35% of the emissions, despite being only 14% of the supply.

Oil and gas currently contribute around three quarters of domestic energy needs and official forecasts show that, even as demand is reduced, they will continue to play an important role while transitioning to net zero.

Helping to deliver UK energy security and the drive to reach net zero go hand-in-hand. The analysis shows that domestically-produced gas creates significantly fewer emissions than average imports, and that continuing to produce gas in the UK as cleanly as possible will assist in the drive to cut emissions.

The NSTA is currently assessing the 115 bids received for licences in the 33rd Oil and Gas Licensing Round, with a view to awarding licences later in the year. These new licences will help to ensure energy security and support the drive to cut emissions by reducing reliance on dirtier more carbon intensive gas imports.

However, it is vital that emissions are tackled at home as well, so the NSTA has already offered 21 carbon storage licences from the UK’s first-ever Carbon Storage Licensing Round, sites which could store up to 10% of total annual UK emissions.

The authority has worked with industry to help it cut emissions from flaring and venting by 50% in the past five years, and published guidance that makes it clear that routine venting and flaring will be banned for all by 2030.

In addition, the NSTA is working with government and industry to support platform electrification, setting out to industry our expectation that investments need to happen now.

The NSTA’s commitment to the energy transition is demonstrated by the fact that interventions have prevented the lifetime emission of 3.9 million t of CO2e - equivalent to taking 1.9 million cars off the road for a year.

Hedvig Ljungerud, NSTA Director of Strategy, said: “This analysis highlights the benefits of continuing to produce our own gas, as cleanly as possible, for as long as we consume it, to support domestic energy security and the drive to net zero. “The NSTA will continue to work with industry to drive reductions in emissions while also supporting the energy transition.”

Read the article online at: https://www.oilfieldtechnology.com/drilling-and-production/31072023/north-sea-gas-is-almost-four-times-cleaner-than-imports/