Specs_Description_Image of Typical Pumping Test Equipment.pdf
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- Solicitation number
- PANPOD26P0000026634
About this file
This document describes equipment specifications for a well testing contract. The contractor must use a submersible pump, specifically a Wilo SPI 10.1200-1S.300 with a 3-phase 460-volt 30 hp motor, or a similar approved pump meeting precise criteria. Required pump specifications include being designed for well testing applications, capable of delivering a minimum 350 GPM flow rate, having a maximum 10-inch outer diameter, and being fitted with flow meters and a sand tester.
Additional required equipment includes a water level data logger, water level tape, electronic flow meter, flat-bottom sounding device, measuring tape, and a Rossum Sand Tester. The document notes that while most relief wells with initial step flow rates over 300 gpm will use a submersible pump, some lower-capacity wells might require an above-ground pump. The contractor must provide the pump's manufacturer specifications and pump curve to the Contracting Officer's Representative (COR) for review and approval prior to use, with the goal of maintaining equipment consistency for future maintenance.
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Equipment
The Contractor must use a submersible pump, motor, VFD (Variable Frequency Drive), associated pipe, and pump assembly accessories to meet the following specifications for the use of this contract work. A Wilo SPI 10.1200-1S.300 with a 3-phase 460 volt 30 hp motor is the preferred pump, a ‘similar’ pump may be substituted with prior approval from the COR. To be considered ‘similar,’ the pump must meet the following criteria:
Type: Submersible pump designed for well testing applications.
Voltage & Phase: 3-phase, 460-volt electrical supply.
Minimum Flow Rate: Capable of consistently delivering a minimum flow rate of 350 GPM at a head equivalent to the anticipated drawdown in the wells (as indicated in GFI- 4). The Contractor must provide a pump curve demonstrating this capability.
Diameter: A maximum outer diameter of 10 inches to ensure compatibility with the well casings.
Fitted with Flow Meter(s) and a Sand Tester.
The Contractor must provide the pump’s manufacturer’s specifications and pump curve to the COR for review and approval prior to use. Utilizing a similar pump to the one owned by the government will help in future maintenance to maintain consistency throughout tests.
The bulk of the relief wells with an initial step flow rate “Q” greater than 300 gpm must be performed with a similar submersible pump. However, some of the relief wells have a relatively low capacity and would be difficult to achieve pumping rates through all steps. For these lower capacity relief wells, it may be necessary to perform the Step-drawdown pumping test with an above ground pump. The development within this contract may allow these wells to perform at higher capacities.
A water level data logger and water level tape will be necessary to track and monitor water levels during pumping tests. The water level in all wells is typically four to 15 feet below the ground surface (BGS). An electronic flow meter is required to measure the flow rate. A flat-bottom sounding device and a measuring tape are required to determine the amount of sand infiltration deposited in the bottom of the well. A Rossum Sand Tester must be used to determine the amount of sand in the effluent. Pressure transducers and a data logger suitable for determining the depth to the top of the water must be used to find the exact drawdown in the well.
Figure 1. Typical pumping test equipment
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