多層注入法を用いた深部塩水帯水層への洋上CCUSの数値調査：中国恩平15-1油田CO2貯留プロジェクトの事例研究
Numerical Investigation of Offshore CCUS in Deep Saline Aquifers Using Multi-Layer Injection Method: A Case Study of the Enping 15-1 Oilfield CO2 Storage Project, China (原題)
Jiayi Shen, Futao Mo, Zhongyi Tao, Yi Hong, Bo Gao, Tao Xuan
🤖 gxceed AI 要約
日本語
中国初の洋上CCUS実証である恩平15-1油田プロジェクトを対象に、多層CO2注入法の力学健全性と貯留効率を評価。TOUGH-FLACを用いた連成H-Mモデルで10年間の注入をシミュレーションし、14の地質・力学パラメータの感度分析を実施。結果、30kg/sの注入率で10年間安全に貯留可能であり、貯留層の浸透率と摩擦角が最重要因子であることを示した。
English
This study evaluates the mechanical integrity and storage efficiency of multi-layer CO2 injection in the Enping 15-1 oilfield, China's first offshore CCUS demonstration. Using a coupled hydro-mechanical model (TOUGH-FLAC), it simulates a 10-year injection scenario and performs sensitivity analysis on 14 parameters. Results show that a total injection rate of 30 kg/s is sustainable without mechanical failure, with reservoir permeability and friction angle being the most critical factors.
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
日本では洋上CCUSの実証が進むが、多層注入の力学評価は設計に重要。本研究成果は、日本の洋上貯留サイト選定やモニタリング計画に示唆を与える。
In the global GX context
As offshore CCUS scales globally, this case study provides critical insights into multi-layer injection strategies and geomechanical risks, informing best practices for storage site selection and operational safety under the ISSB and transition finance frameworks.
👥 読者別の含意
🔬研究者:Provides a validated modeling approach and sensitivity analysis for offshore CO2 storage, useful for similar geological settings.
🏢実務担当者:Offers operational parameters (injection rates, target layers) and key risk factors for planning offshore CCUS projects.
🏛政策担当者:Demonstrates technical feasibility of offshore CCUS, supporting policy development for carbon storage incentives.
📄 Abstract（原文）
Geological storage of CO2 in offshore deep saline aquifers is widely recognized as an effective strategy for large-scale carbon emission reduction. This study aims to assess the mechanical integrity and storage efficiency of reservoirs using a multi-layer CO2 injection method in the Enping 15-1 Oilfield CO2 storage project which is the China’s first offshore carbon capture, utilization, and storage (CCUS) demonstration. A coupled Hydro–Mechanical (H–M) model is constructed using the TOUGH-FLAC simulator to simulate a 10-year CO2 injection scenario, incorporating six vertically distributed reservoir layers. A sensitivity analysis of 14 key geological and geomechanical parameters is performed to identify the dominant factors influencing injection safety and storage capacity. The results show that a total injection rate of 30 kg/s can be sustained over a 10-year period without exceeding mechanical failure thresholds. Reservoirs 3 and 4 exhibit the greatest lateral CO2 migration distances over the 10-year injection period, indicating that they are the most suitable target layers for CO2 storage. The sensitivity analysis further reveals that the permeability of the reservoirs and the friction angle of the reservoirs and caprocks are the most critical parameters governing injection performance and mechanical stability.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.3390/jmse13071247first seen 2026-08-30 03:57:03
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