Free Texas General Well Driller practice test

10 questions from our verified General Well Driller bank. Pick an answer to see if you’re right, the correct answer, and the rule it comes from. No sign-up.

Real exam: 60 scored questions110 minutes70% to pass

Question 1 · Texas Law and Rule
For license renewals on or after March 1, 2024, how many total hours of continuing education must a driller complete each renewal period?
The answer is C. 8 hours
On or after March 1, 2024: 8 total hours — 1 hour on statutes/rules plus 7 industry hours. (Before that date it was 4 hours.)
Source: 16 TAC §76.25 (Continuing Education)
Question 2 · Texas Law and Rule
Which of the following is a responsibility of a licensee under Chapter 76?
The answer is C. Marking vehicles and equipment as required by rule
Licensees must display their license number on each side of every well rig or pump installer vehicle, at least 2 inches high, in a contrasting color, within 30 days of license issuance.
Source: 16 TAC §76.74 (Marking Vehicles and Equipment)
Question 3 · Texas Law and Rule
Within how many days of license issuance must a licensee mark their well rig or vehicle with the license number?
The answer is B. 30 days
A licensee has 30 days from license issuance to comply with the vehicle/equipment marking requirements of §76.74.
Source: 16 TAC §76.74 (Marking Vehicles and Equipment)
Question 4 · Groundwater Protection
The 100-ft and 150-ft pollution-source setbacks may generally be reduced to what distance if proper cementing techniques are used?
The answer is A. 50 feet
With proper cementing, those setbacks may be reduced to 50 feet; the property-line setback may be reduced to 5 feet with enhanced sealing.
Source: 16 TAC §76.100(b) (setback reductions with cementing)
Question 5 · Groundwater Protection
After a well is plugged, within how many days must the driller, pump installer, or owner submit a plugging report?
The answer is D. 30 days
A plugging report is due within 30 days to the groundwater conservation district (if any) and the executive director.
Source: Tex. Occ. Code §1901.255(d) (Plugging report)
Question 6 · Safety
Which OSHA standard governs the control of hazardous energy (lockout/tagout) when servicing equipment?
The answer is B. 29 CFR 1910.147
1910.147 is lockout/tagout. 1910.95 is noise, 1910.181 is derricks, 1926.501 is fall protection.
Source: OSHA 29 CFR 1910.147 — The control of hazardous energy (lockout/tagout)
Question 7 · Safety
When raising a drilling mast or derrick, which hazard is the most serious to check for overhead?
The answer is A. Overhead electrical power lines
Contact between a raised mast and overhead power lines is a leading electrocution hazard on drilling sites.
Source: OSHA 29 CFR 1910.333 (safe electrical work practices) — overhead line clearance
Question 8 · Hydrology and Geology
Transmissivity is best described as which of the following?
The answer is D. Hydraulic conductivity multiplied by the saturated thickness of the aquifer
Transmissivity (T) = hydraulic conductivity (K) × aquifer thickness; it describes the aquifer's overall ability to transmit water.
Source: Groundwater and Wells, 3rd Ed., Ch. 2 (transmissivity, p. 31)
Question 9 · Hydrology and Geology
Groundwater generally moves in which direction?
The answer is D. From areas of higher hydraulic head to areas of lower hydraulic head
Per Darcy's Law, groundwater flows from higher to lower hydraulic head; rate depends on conductivity, gradient, and area.
Source: Groundwater and Wells, 3rd Ed., Ch. 2 (groundwater flow / Darcy's Law, pp. 24-31)
Question 10 · Rigs
Maintaining adequate uphole (annular) velocity during rotary drilling is critical for which purpose?
The answer is B. Proper borehole cleaning — lifting cuttings out of the hole
If uphole velocity is too low, cuttings settle instead of being carried out. They accumulate in the annulus, grind up, and can pack off the hole or stick the string.
Source: Groundwater and Wells, 3rd Ed., Ch. 8 (borehole cleaning)

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