Impact of Silty Sand Layer Fluidity on Water Well Drills and Countermeasures

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  1. Risks Caused by Fluidity
    When silty sand layers have high water content, their fluidity increases, triggering quicksand and sand gushing. Quicksand can cause rapid wellbore collapse, burying bits and pipes, while sand gushing deteriorates mud performance, hindering drilling.water well drilling rig
  2. Pre-Drilling Grouting Measures
    Adopt advanced grouting by injecting cement-sodium silicate double-fluid grout into silty sand layers before drilling. This improves layer compactness and stability to reduce fluidity risks.water well drilling rig
  3. Drilling Process and Mud Optimization

  • Use slow drilling and multiple hole cleaning to minimize disturbance to silty sand layers.
  • Increase mud specific gravity and viscosity to enhance pressure on the layer, suppressing quicksand and sand gushing. These steps effectively reduce the adverse impact of silty sand fluidity on drilling operations.