WJ designs and installs deepwell dewatering systems that deliver reliable groundwater control for deeper excavations, including shafts, basements, canals, underpasses and tunnels. Each deepwell is equipped with an electric submersible pump, providing an efficient solution for a wide range of medium- to high-permeability soils and rocks. Our deepwells have been successfully used in excavations over 90m deep.
A deepwell system typically involves a series of drilled wells installed around or within an excavation. Each well contains a submersible pump that lowers the groundwater level by drawing water directly from below the water table. The system can be designed to deliver significant drawdown, with the number, spacing, and depth of wells adjusted to suit the ground conditions and excavation requirements.
WJ uses high-quality materials for each installation, including machine-cut slotted PVC well screens and carefully selected filter media. We install deepwells using our own fleet of rotary and piling drilling rigs, which are also available for rental where needed.
Whether you’re dealing with fractured limestone or granular sands, our deepwell systems are tailored to your site’s conditions, helping you achieve stable ground and meet programme timelines.
We equip our systems with central control cabins that manage multiple pumps from a single location. These offer options such as automatic mains failure (ATS) switchover to standby generators, GSM text alarms, and remote data logging to monitor flows and groundwater levels in real time.
In sites with high flow rates or permeable formations like coralline limestone, we can design larger-diameter deepwells or sump wells with high-capacity sump pumps. Additional technique, including progressive trenching and French drains, can also be used to direct groundwater towards the wells
With over 40 years of global experience, and extensive local knowledge across Saudi, WJ delivers expertly designed deepwell systems that perform in even the most challenging conditions. Our design-led approach ensures every project benefits from:
