Case sharing of well-drilling in clay layers

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  1. Construction Halted: Stuck Due to Lack of Expertise​
In a remote village, residents, plagued by water shortages, decided to drill a well. Initial surveys showed clay layers underground. Without professional guidance, they used simple equipment and regular bits, drilling too fast. Ignorant of clay’s stickiness, the bits got stuck repeatedly, halting the project.​
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  1. Strategy Adjustment: Breaking Through with Expert Help​
Realizing the issue, villagers consulted experts and learned key drilling points. They switched to auger drills, slowed down, and prepared drilling fluid. Drilling went smoothly until the borehole collapsed at a certain depth. Experts found the fluid’s viscosity and density too low. After adjusting the formula, they completed drilling successfully.​
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  1. Project Success: Triumph with the Right Approach​
After drilling, villagers installed well pipes and filled gravel properly. Following well flushing and a pumping test, the well produced water, meeting daily needs. This case proves understanding clay and using correct methods are crucial for drilling success, offering valuable lessons for similar projects.