水力断裂の量は,デュヴェルネの演劇で誘発された地震の生産性と関連しています
R Schultz1, G Atkinson2, D W Eaton3
1Alberta Geological Survey, 4999 98 Avenue, Edmonton, Alberta, Canada. ryan.schultz@aer.ca.
まとめ
アルバータ州フォックス・クリークでの水力断層は,特に大きな注入量で,より多くの地震を引き起こしました. 地質学的要因も地震活動に大きく影響し,潜在的な出来事を予測するのに役立ちます.
科学分野:
- 地震学
- 石油工学
- 地理学
背景:
- アルバータ州フォックス・クリーク近くの地震の頻度は2013年12月に顕著に増加した.
- この地震活動の急増は 液圧破砕プロセスと直接関連しています
研究 の 目的:
- 水力断裂の注入パラメータとその結果発生する地震性の相関を調査する.
- フォックス・クリーク地域における地震発生率に寄与する重要な要因を特定する.
主な方法:
- 噴射パラメータを分析するために 総合的な水力破砕データベースを使用しました
- 地質学的要因の影響を評価するために空間的相関分析を行った.
- 予測のために地震発生指数修正周波数-大きさの分布を適用した.
主要な成果:
- 誘発された地震は,大きな注入量 (10^4〜10^5立方メートル) を含む完成と強く関連していました.
- 地震の生産性は,注入量との線形的なスケール関係を示した.
- 噴射圧と速度は地震反応とほとんど関係なく,地質学的な要因が重要な役割を果たした.
結論:
- 注入量と地質学的要因は,誘発地震率の変動の約96%を説明します.
- 開発されたフレームワークは,地震発生指数を組み込み,フォックス・クリーク近くの誘発性地震を予測するための方法を提供します.
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