Characterization of Caprock Integrity in CCS Development Based on Shale Core Rock Elasticity of Well SA-001 in the Salaq Basin, Indonesia

インドネシア・サラク盆地SA-001坑の頁岩コア弾性に基づくCCS開発におけるキャップロック完全性の特性評価 (AI 翻訳)

Buntoro A, Lukmana AH, Putra TE, Ralanarko D

Research Squareプレプリント2026-05-28#CCUS対象セクター: energy

DOI: 10.21203/rs.3.rs-8893502/v1

原典: https://doi.org/10.21203/rs.3.rs-8893502/v1

🤖 gxceed AI 要約

日本語

インドネシア・サラク盆地の頁岩キャップロックの力学特性を実験的に評価し、CCSの長期安全性に重要な密封能力を確認した。圧縮強度や弾性率、モール・クーロン破壊基準から、CO2圧入による応力変化に対する十分な強度を持つことを示した。

English

This study characterizes shale caprock integrity for CCS in Indonesia's Salaq Basin through laboratory rock mechanics tests. Results show moderate to high stiffness and shear strength, supporting the caprock's effectiveness for safe CO2 storage under injection-induced stress changes.

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を重要な脱炭素策と位置づけており、アジアでのCCS実証・事業展開が進む中、本研究成果は日本企業が関与する海外CCSプロジェクトのリスク評価や技術選定に直接貢献する。

In the global GX context

As global CCS deployment accelerates, robust caprock integrity assessment is critical for safe CO2 storage. This study provides empirical data from an Indonesian basin, contributing to international best practices for CCS site characterization and risk management.

👥 読者別の含意

🔬研究者:Provides empirical geomechanical data for caprock integrity assessment in CCS, useful for modeling and site selection.

🏢実務担当者:Offers a methodology for evaluating caprock suitability in CCS projects, aiding in risk assessment and regulatory compliance.

🏛政策担当者:Highlights the importance of geomechanical characterization for ensuring safe CCS operations, informing regulatory frameworks.

📄 Abstract（原文）

<title>Abstract</title> <p>The integrity of caprock is a critical factor controlling the long-term safety of Carbon Capture and Storage (CCS) projects. This study presents a comprehensive geomechanical characterization of shale caprock based on laboratory rock mechanics and elastic property measurements from shale core samples of Well SA-001 in the Salaq Basin, Indonesia. Fifteen core plugs from depths between 3546 and 3744 ft MD were subjected to uniaxial and triaxial compressive strength tests, static elastic modulus measurements, and Mohr–Coulomb failure envelope analysis following ASTM D7012 standards. The results indicate ultimate compressive strengths ranging from 10.23 to 112.46 MPa under confining pressures of 0–9.32 MPa. Static Young’s modulus varies between 749 and 12,097 MPa, with Poisson’s ratios of 0.12–0.20. Mohr envelope analysis reveals cohesion values of 2.23–16.56 MPa and internal friction angles between 33.16° and 45.52°. These mechanical and elastic characteristics indicate that the shale interval possesses moderate to high stiffness and shear strength, supporting its effectiveness as a sealing formation for CCS operations. The integration of elastic properties and failure criteria provides a robust basis for assessing caprock integrity under CO₂ injection-induced stress changes.</p>

🔗 Provenance — このレコードを発見したソース

Research Square https://doi.org/10.21203/rs.3.rs-8893502/v1first seen 2026-06-04 04:26:49 · last seen 2026-06-11 04:37:19

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