カナダ西部の水力断裂による断層活性化
1Department of Geoscience, University of Calgary, Calgary, Alberta T1N 1N4, Canada.
まとめ
カナダ西部の水力破砕作業は 地震を誘発し,注入場所の近くで地震が発生します 地震はストレスの変化によって引き起こされ 破裂のイベントの後に数ヶ月間持続します
科学分野:
- 地理学
- 地震学
- 石油工学
背景:
- 水力断裂はカナダ西部で発生する地震の 主な原因です
- 米国中西部で発生する地震の主な原因は 塩水の廃棄です
- カナダのシェールプレーの地震活動には詳細な分析が必要です.
研究 の 目的:
- カナダのシェール鉱山における水力破砕と 誘発性地震との関係を調査する.
- 地震のパターンを分析し,その空間と時間の相関をインジェクションデータと分析する.
- 水力断裂による故障活性化のメカニズムと範囲を理解する.
主な方法:
- テンプレートベースの地震カタログを利用した.
- 4ヶ月の間での注射データを収集した.
- 水力断裂操作に関連した地震性のパターンを分析した.
主要な成果:
- 地震は水力断層の近くで 時間と空間で 密集していました
- 最大の誘導イベントは 3.9のマグニチュードでした.
- 震度が示したストレスの変化は 1km以上の断層の滑り方を活性化します.
- 断裂による断層圧縮により 地震が数ヶ月続きました
結論:
- 水力破砕はカナダ西部で 発生する地震の大きな原因です
- 誘発された地震性は,注入区域を超えて,より深い地質構造に影響を与える可能性があります.
- これらの地震パターンを理解することは,非従来の石油とガス採掘に関連するリスクを管理するために不可欠です.
関連する概念動画
Activation Energy
88.4K
Activation energy is the minimum amount of energy necessary for a chemical reaction to move forward. The higher the activation energy, the slower the rate of the reaction. However, adding heat to the reaction will increase the rate, since it causes molecules to move faster and increase the likelihood that molecules will collide. The collision and breaking of bonds represents the uphill phase of a reaction and generates the transition state. The transition state is an unstable high-energy state...
88.4K
Application of Pascal's Law
11.2K
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
11.2K
Hydraulic Jump
788
A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
788
Frost Action on Concrete
511
Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
This freeze-thaw cycle primarily causes surface scaling, where...
This freeze-thaw cycle primarily causes surface scaling, where...
511
Microcracking in Concrete
524
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
524
Mass Spectrometry: Branched Alkane Fragmentation
1.9K
This lesson delves into the mass spectrometry of branched alkane fragmentation. Branched alkanes possess secondary or tertiary carbon atoms, which generate relatively stable carbocations if the cleavage occurs at the branching point. The high stability of carbocations drives the instant fragmentation of branched alkanes. Accordingly, the branched alkane's molecular ion peak is very weak or invisible in the mass spectra, especially in comparison to a linear alkane.
1.9K


