CO Well Driller case studies
CO Well Driller · Put your knowledge to work in context.
The Colorado well driller credential covered on this page is the state's water well construction contractor licensing pathway, administered in Colorado by the Division of Water Resources together with the Board of Examiners of Water Well and Ground Heat Exchanger. The Board's rulemaking covers licensing administration, financial responsibility, continuing education, and remedial action for well construction, ground heat exchanger, and pump installation contractors, so the credential is aimed at contractors and operators who build water wells, install ground heat exchanger systems, and install pumps in Colorado. The CO Well Driller case studies are 5 cases and about 2,531 words.
1Flowing Annulus on a Fractured-Rock Domestic Well
A driller completes a 6-inch PVC-cased domestic well to 340 ft in fractured crystalline rock. At 215 ft the bit enters a water-bearing fracture, and the water level rises to 8 ft below land surface.
475 words, about 2 min2Lost Circulation in a Vertical Ground-Loop Borehole
A driller is constructing a vertical closed-loop ground heat exchanger for a new school. The design calls for eight boreholes, each 280 ft deep, on 15-ft centers.
573 words, about 3 min3Submersible Pump Overload After Fifteen Minutes
A 5-inch PVC well is 300 ft deep with a static water level of 90 ft. The well permit lists a yield of 12 gpm.
500 words, about 3 min4Unlicensed Drilling While the Licensee Is on Vacation
A licensed well driller leaves his company for a two-week vacation. During that time, his employee-who holds a pump installation license but not a well driller license-uses the company rig to drill a replacement domestic well for a neighbor.
433 words, about 2 min5Gravel-Plug Abandonment and Continuing Education Deficiency
A driller with 22 years of experience receives a notice of violation for abandoning a well by filling it with 15 ft of gravel and a steel plate, without grout, in an area where the well penetrated a confined aquifer. He has 45 days to submit a corrective action plan.
550 words, about 3 min