中国・楡林における低孔隙率塩水帯水層のCO2貯留候補地の資源分析とスクリーニング
Resource Analysis and Screening for Potential CO2 Storage Targets in Low-Porosity Saline Aquifers, Yulin, China (原題)
Haofan Wang, Jinfeng Ma, Lin Li, Zhe Wang, Lu Xue, Yi Bo Du, Xuejun Lai, Yu Mou
🤖 gxceed AI 要約
日本語
中国オルドス盆地楡林地区の192坑井データを用い、低孔隙率・超低浸透率の塩水帯水層を対象にCO2地中貯留（CCS）の適地選定を実施。砂岩比・層厚・孔隙率・浸透率・泥岩比・社会環境制約など10指標以上を統合した評価指標体系「LOWEIS」を新たに構築し、14,000km2を階層評価した結果、8つの有望貯留候補地を特定した。高孔隙率の国際的成功事例に依存してきた従来の選定基準を補完する、低品質貯留層向けの枠組みを提示する。
English
Using well-logging and geological data from 192 wells in the Yulin area of China's Ordos Basin, this study screens CO2 storage targets in low-porosity, ultralow-permeability saline aquifers. The authors identify two candidate aquifers and build LOWEIS, a framework integrating over ten indicators (sand ratio, thickness, porosity, permeability, shale ratio, social-environmental constraints), then apply it across 14,000 km2 to pinpoint 8 favorable storage targets. It complements conventional site-selection criteria derived from high-porosity international projects.
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
日本はCCS法整備とJOGMEC主導の適地調査を進めており、低孔隙率・低浸透率層という日本国内の貯留層条件に近い地質での選定手法は、国内CCS事業化検討に直接参考になる。
In the global GX context
As ISSB/TCFD disclosure pushes firms to substantiate decarbonization pathways, credible CCS site-selection methodology underpins transition-plan credibility; this work extends global CCS siting practice beyond high-porosity reservoirs common in North Sea and North American projects.
👥 読者別の含意
🔬研究者:低品質貯留層向けの多指標スクリーニング手法LOWEISの設計と適用例として、CCS適地評価研究の参照枠になる。
🏢実務担当者:CCS事業検討企業が、孔隙率・浸透率の低い帯水層での候補地絞り込み指標として活用できる。
🏛政策担当者:CCS適地選定における社会環境制約の組み込み方針を、国内貯留層調査制度の設計に参照できる。
📄 Abstract（原文）
Abstract The Ordos Basin, a crucial energy base in China, leads the nation in oil, gas, and coal production, consequently leading to high carbon emissions. This establishes it as a key prospective region for implementing CO2 geological storage (CCS) to facilitate regional emissions reductions. However, the basin is predominantly characterized by low-porosity and ultralow-permeability reservoirs, which limit the applicability of current site selection criteria, largely derived from successful international projects involving high-porosity and high-permeability reservoirs. There is a lack of systematic site selection research tailored to such low-quality reservoirs. Therefore, this study focuses on screening target areas for the CO2 storage. On the basis of well-logging and geological data from 192 wells in the Yulin area of the Ordos Basin, we systematically conducted lithostratigraphic correlation, reservoir property interpretation, and deep saline aquifer identification. This resulted in the identification of two saline aquifers: the Chang 10-3 Submember of the Yanchang Formation (with an average porosity of 8.3% and a maximum permeability of 12.3 mD) and the Qian 5 Member of the Shiqianfeng Formation (with an average porosity of 8.5% and a maximum permeability of 8.3 mD). We then developed the low-porosity and low-permeability evaluation index system (LOWEIS), a dedicated framework integrating and quantifying more than ten key indicators, including the sand-to-formation ratio, single-layer thickness, porosity, permeability, shale-to-formation ratio, and social environmental constraints. Applying the LOWEIS for hierarchical evaluation and spatial overlay analysis across the 14,000 km2 area of Yulin, China, we preliminarily identified 8 favorable storage targets with the highest implementation potential. This work complements existing site selection techniques for CO2 geological storage and provides a targeted evaluation framework for low-porosity and low-permeability saline aquifers.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.1021/acsomega.6c08102first seen 2026-10-24 17:24:14
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