Pumping Test with Flow meter for Dewatering Services in DubaiA pumping test constitutes pumping from a test well at a controlled rate and monitoring the flow rate from the well and the drawdown in an array of observation wells at varying radial distances from the test well. Analysis of data from a correctly executed pumping test can be one of the most reliable methods of determining the mass permeability of water-bearing soils. Harco World Conducts Pumping Tests to ascertain the below parameters.A pumping test constitutes pumping from a test well at a controlled rate and monitoring the flow rate from the well and the drawdown in an array of observation wells at varying radial distances from the test well. Analysis of data from a correctly executed pumping test can be one of the most reliable methods of determining the mass permeability of water-bearing soils. Harco World Conducts Pumping Tests to ascertain the below parameters.

1. To investigate water quality on potentially contaminated sites and as part of groundwater remediation schemes
2. To assess the performance of new water supply wells
3. To assess the need for, and results of water well rehabilitation 
4. To investigate the potential for open loop geothermal systems
5. To obtain permeability values for groundwater control.

Control of the pumping rate during the test is important as it allows for reliable drawdown data to be collected to determine the yield of the well and aquifer properties. Harco World controls the pumping rate by adjusting the pump speed and or use a gate valve to adjust the pumping rate to keep it constant. The discharge pipe and the valve should be sized so that the valve will be from ½ to ¾ open when pumping at the desired rate. The valve should be installed at a sufficient distance from the flow measurement device to avoid any impacts from turbulence. Measuring the discharge of pumped water accurately is also important and common methods of measuring discharge include the use of an orifice plate and manometer , an inline flow meter, an inline calibrated pitot tube, a calibrated weir or flume, or observing the length of time taken for the pumped water to fill a container of known volume. The flow measurement device should be compatible with the expected pumping rate. Calibrated in-line flow meters and orifice weirs are used to measure pumping rates for high production wells. If an orifice weir is used, the discharge pipe should be straight and level for a distance of at least six feet (1.8 meters) before the water reaches the orifice plate. We generate reports based on the outputs of automated electromagnetic flow meter and we also manually measure the same data as additional confirmation.

As part of pre planning and strategy of a pumping test HARCO considers several factors when determining the type of pump to use and the depth at which it should be set, including:
1) Well diameter
2) Desired pumping rate;
3) Total dynamic head including the pumping water level, the above ground head (if applicable) and all friction losses in the casing, pipes, fittings, etc.
4) Reliability of power source; and
5) Horsepower requirements
Among our core activities, we also provide Pumping Testing Services In Dubai, UAE, Qatar, Saudi Arabia and Oman.

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