炭化水素井の地熱利用に向けた数値評価：メキシコにおける再生可能エネルギー転換と環境持続可能性のモデル
Numerical evaluation of hydrocarbon wells for geothermal utilization: a model for renewable energy transition and environmental sustainability in Mexico (原題)
Eduardo Teófilo-Salvador, R. Camacho–Velázquez, A. Paulina Gómora‐Figueroa, J.A. Montemayor-Aldrete, M. Vásquez-Cruz
🤖 gxceed AI 要約
日本語
メキシコの炭化水素井と地熱有望域を重ね合わせ、地形・地質・稼働状況から候補を抽出した。4,244m×5,655m×4,500mの制御体積に84,150ノード・70坑井を配置しFortran90で熱伝導を数値解析、360m・430m間隔の井戸ペアで平均160℃・150℃（最高166℃）を確認した。熱伝導率10%変動は初期温度に±3%の影響にとどまり、地層別の熱伝導・保熱特性も示された。直接利用による地熱活用が可能で、petrothermal化には地質力学・水圧破砕・坑井健全性の検討が必要と結論づける。
English
This study overlays Mexican hydrocarbon wells with geothermal zones and selects prospects by topography, geology and inactivity. A Fortran90 thermal model of a 4,244×5,655×4,500 m control volume (84,150 nodes, 70 wells) finds well pairs 360 m and 430 m apart reaching mean temperatures of 160°C and 150°C (max 166°C) at 4,000–4,500 m depth. A 10% thermal-conductivity change shifts initial temperature by only ±3%, and formation-specific conductivity/heat retention is mapped. Direct-use geothermal is feasible; petrothermal conversion needs geomechanics, fracturing and integrity analysis.
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
日本でも油井・ガス井の地熱転用や坑井リユースはコスト低減策として議論されており、坑井資産の再評価や地域分散型再エネの事業化検討に参考となる手法を提示する。ただし日本のSSBJ・有報開示や制度設計への直接的示唆は限定的。
In the global GX context
Repurposing existing hydrocarbon wells for geothermal is a globally relevant transition pathway that lowers drilling capex and supports regional decarbonization. It adds empirical well-scale thermal modeling to the literature on fossil-asset repurposing, though it does not engage TCFD/ISSB disclosure or transition-finance frameworks.
👥 読者別の含意
🔬研究者:坑井リユース型地熱の熱伝導モデリング手法と、感度分析・地層別特性の評価手順を参考にできる。
🏢実務担当者:既存坑井資産の地熱転用可能性をスクリーニングする際の評価軸（深度・温度・坑井間距離）として活用できる。
🏛政策担当者:化石資産の再活用による地域分散型再エネ政策や、地熱転用に伴う水圧破砕・坑井健全性規制の検討材料になる。
📄 Abstract（原文）
Decarbonization requires integrating new technologies and advanced systems to harness energy sources, such as those found in geothermal reservoirs. Due to drilling costs, the reuse of hydrocarbon wells is being promoted. The objective was to numerically model the interaction between hydrocarbon wells with high geothermal potential. Hydrocarbon wells and geothermal zones in Mexico were overlaid, and prospects were identified based on topography, geothermal, geological, and inactivity criteria. A stratigraphic profile was constructed within a control volume (4,244 m × 5,655 m × 4,500 m) containing 84,150 nodes and 70 wells. Only well pairs (X-1, X-2) and (X-4, X-3)—separated by 360 m and 430 m, respectively—exhibited relevant thermal characteristics. In Fortran90 simulations, average temperatures were 160°C and 150°C, with a maximum of 166°C, at depths of 4500 m, 4000 m, and 4500 m, respectively. A 10% variation in thermal conductivity affected the initial temperature by ±3%, a figure lower than the expected ±20°C. Isotherms plotted at 25°C intervals revealed thermal non-linearity. The Recklaw and Weches formations were better thermal conductors, while the Queen City formation retained heat more effectively. Geothermal energy can be harnessed through direct-use applications, even for neighboring wells lacking specific data. Conversion to petrothermal systems requires analysis of geomechanics, hydraulic fracturing, and mechanical integrity. This research presents the first numerical model in Mexico for the assessment of hydrocarbon wells for geothermal potential—a sustainable energy transition alternative aimed at decarbonization and the decentralization of renewable energy, initially at a regional scale and subsequently at a national one.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.ref.2026.100969first seen 2026-11-05 04:50:48 · last seen 2026-11-06 04:34:18
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