Tiny Camera Adds to Wide Range of Services of
ETTL Engineers & Consultants Inc. for Ground-Water Monitoring and Recovery
Do you own and/or operate ground-water (G-W) monitoring and/or recovery wells? As readers located in
Well Inspection inside the Well Itself!
The photos below were taken during an evaluation of three recovery wells, made for an ETTL client. Averaging 25' bgs, the wells had been in service for some time and had become inefficient. From the information ETTL gathered, an appropriate rehabilitation scheme was developed. With the help of ETTL's Geo-VISION camera and video system, it was discovered that the bottom cap of one well was defective; and the well was replaced. The structure of the other two wells passed muster, but each required a new pump. ETTL pulled the old ones and installed a Grundfos Redi-Flow 3 Submersible Pump – a "smart" pump with built-in safeguards and controls – in each well, as well as in the new (replacement) well.
How the Camera and Monitor Are Used With a Pipe String
The Geo-VISION camera has its own light. It first is attached to narrow PVC pipe. The centralizer is used to keep the camera centered in the well to be inspected. It then is lowered into the well so inspection can be carried out. More sections of PVC pipe are added until the camera reaches the bottom of the well. The well's condition is continuously displayed on the monitor and is recorded audio-visually. ETTL uses the Geo-VISION to help identify the integrity and operating efficiency of wells from 1¼" to 24" diameter. The camera housing can operate in pressures to 200 psi (equal to 426 ft underwater).