WJ Group offers extensive experience in both pump testing for groundwater investigations and thermal response tests to determine thermal properties for closed-loop ground source energy systems.
Groundwater pump testing is essential for assessing hydrogeological conditions in advance of excavations or structures which may be impacted by water. They will assist in the development of the dewatering, excavation and ground support strategy and help to eliminate the uncertainties that can lead to project delays. Assessing the impact of pumping on the aquifer for environmental protection or regulatory compliance, through monitoring the water table and taking water samples for chemical analysis may be required. Traditional pumping tests are undertaken using a single pumped well and appropriate piezometer and monitoring well array.
Test pumping and pilot trials may involve working on a small group of wells, ejector wells or wellpoint systems. Often, these can be incorporated into the final pumping scheme to reduce the cost of the test. For potential ground source energy (geothermal) applications, in addition to assessing long term impacts on aquifers, testing can determine the thermal properties of the ground and the effectiveness of abstraction and recharge schemes.
These tests are essential for assessing hydrogeological conditions and often required for obtaining abstraction licenses. Traditional pump testing are undertaken using a single pumped well and appropriate piezometer array. Test pumping and pilot trials may involve working on a small group of wells, ejector wells or wellpoint systems.
These tests are used to determine the thermal properties of the ground. They provide critical data for designing cost-effective closed-loop ground source systems. A small portable test rig injects heat energy into a closed loop test borehole, measuring incoming and outgoing temperatures of the heat transfer fluid, the flow rate of the fluid and the heat energy input.
With decades of experience undertaking tests globally for world class projects, ranging from gas projects on swamps in Nigeria, water supply projects in the desert in the UAE or nuclear facilities on the coast in the UK, WJ Group ensures that all tests are carried out to the highest possible standards, whether for groundwater investigations or thermal system feasibility. Our comprehensive service includes test design, installation, and data analysis, providing insights through advanced reporting methods such as AGS, Excel, or graphical dashboards.
