Many achievements! A groundbreaking method that completely revitalizes the structure of old wells as if they were brand new. It allows for the use of existing land and facilities, contributing to cost reduction!
Using a donut drill machine developed independently, we excavate the outer circumference of old wells in a donut shape down to the bottom of the well, extracting all structural components from the screen and casing pipes to the filling gravel, thereby regenerating the well structure. Our method, utilizing the latest technology in materials and finishing techniques, offers excellent water lifting efficiency and provides high-quality wells that do not produce sand. 【Benefits】 1. Unlike conventional double casing construction or renovation work, we fundamentally resolve various troubles. 2. The well is reborn as a high-quality well that does not produce sand. * We conduct sand discharge measurement, with a delivery condition of 5 mg/L or less, but the actual sand discharge is below 1 mg/L. 3. There is no need to acquire new land. 4. Existing water supply pipes and electrical equipment can be reused, reducing overall construction costs. The "Donut Drill Method" is widely adopted in public facilities and private factories across the country.
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basic information
【Construction Conditions】 - Well diameter: 200A to 500A - Double and triple casing wells can also be constructed. - A preliminary survey is required to determine the feasibility of the donut drill method. 【Unique Technology】 - The super screen daisy for water intake uses a special support rod designed for optimal finishing efficiency. - The filling gravel conforming to the Sankyo standard is a custom blend tailored to the aquifer. - Surface casing ensures a supply route for the filling gravel. - Casing work using fully automatic welding machines achieves unparalleled high quality and ultra-fast operation. - The bottom device is a screen type that enables reliable gravel filling. - The partial surging method is the final evolution of conventional surging methods. - The amount of sand lifted is accurately measured using a liquid cyclone. For catalog requests and more details, please feel free to contact the Donut Drill Center. (Donut Drill Center Free Call) 0120-411-737
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Company information
Sankyo Kogyo Co., Ltd. is a company engaged in well drilling and water source facility projects, water supply and sewage facility projects, and deodorization and exhaust gas treatment facility projects. Additionally, we handle products such as super screens that incorporate many years of rich well drilling experience both domestically and internationally, as well as high-performance liquid cyclones. We will continue to uphold our corporate philosophy of "Trust and Correct Technology" and contribute to society as a true environmental engineering company.