Legacy wells supporting net zero by screening carbon storage and geothermal potential in the United States
米国におけるネットゼロ達成に向けた廃坑井の炭素貯留・地熱発電ポテンシャル評価 (AI 翻訳)
Nikhil S. Rajput, Yukun Zhang, Binjian Nie, Aidong Yang
🤖 gxceed AI 要約
日本語
米国の枯渇油ガス井を炭素貯留や地熱発電に再利用する可能性をスクリーニング。公共データを用いて、高ポテンシャル地域で年間0.024～1.17ギガトンのCO2貯留と1～35ギガワット熱の地熱ポテンシャルを推定。課題は坑井の完全性と注入時の冷却で、ダウンホールチョークの評価も実施。サイト固有の評価が必要。
English
This study screens underperforming oil and gas wells in the US for carbon storage and geothermal heat potential, using public datasets. Estimates show 0.024–1.17 Gt CO₂/year storage and 1–35 GWth geothermal potential in high-potential regions. Constraints include well integrity and cooling, with a downhole choke evaluated for startup. Site-specific assessment is required.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では老朽井の数が限られるが、CCSや地熱促進策に参考となるスクリーニング手法を提示。ただし米国データに基づくため、日本の地質・規制に合わせた適用には調整が必要。
In the global GX context
This paper provides a large-scale screening methodology for repurposing legacy wells, relevant to global CCUS and geothermal deployment. It highlights cost benefits from avoided drilling and deferred abandonment, but emphasizes site-specific constraints. Useful for countries with depleted oil and gas fields considering net zero strategies.
👥 読者別の含意
🔬研究者:Provides a methodology for estimating carbon storage and geothermal potential from legacy wells using public datasets, with constraints analysis.
🏢実務担当者:Can inform screening of repurposing opportunities for underperforming wells in oil and gas portfolios.
🏛政策担当者:Indicates potential for legacy wells to contribute to net zero, but underscores need for site-specific assessment and well integrity management.
📄 Abstract（原文）
Abstract Depleted oil and gas reservoirs provide an opportunity to repurpose underperforming wells and reuse existing subsurface infrastructure to support Net Zero transitions. Here we present a United States wide screening analysis of underperforming wells to estimate upper bound technical potential for carbon storage and geothermal heat. Using public well inventories, county level carbon removal cost datasets, national scale storage resource maps, and geothermal resource data, and accounting for well integrity attrition and field scale constraints, we estimate carbon storage potential of approximately 0.024–1.17 gigatonnes per year and geothermal heat potential of approximately 1–35 gigawatts thermal across high potential regions. Avoided drilling and deferred abandonment may indicate upper bound cost benefits, although repurposing costs remain site-specific. Key constraints include well integrity and cooling during injection; a retrofittable downhole choke is evaluated to mitigate this during startup. These results highlight conditional potential and the need for site-specific assessment.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1038/s43247-026-03667-wfirst seen 2026-05-29 06:16:50 · last seen 2026-06-03 05:53:45
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