Water Well Drilling 101 for General Exam
Questions And Correct Answers (Verified Answers)
Plus Rationales 2025 Q&A | Instant Download Pdf
1. Well construction is comprised of the following componets?: drilling, instal-
lation of casing, placing well screens, grouting, DEVELOPMENT
2. Minimum grouting distance?: 10' is code
3. Artesian Well: Artesian pressure is the result of gravity and the confining Aquifer
4. Artesian Well Layers: CONFINING Layer (top)
CONFINED AQUIFER (middle)
IMPERMEABLE Layer (bottom)
5. Types of drilling techniques: Cable tool, Air rotary, Mud rotary, Reverse circu-
lation rotary, Jetting & Driving
mailto:https://www.stuvia.com/user/Wisdoms
, 6. GROUTING: IS THE ACT OF INJECTING CERTAIN SUBSTANCES INTO VOID
SPACE TO REDUCE OR ELIMINATE THEIR PERMEABILITY, CONSOLIDATE OR
INCREASE THEIR STRENGTH.
(Filling space between the casing and bore hole with cement or clay)
7. Methods of Grouting include: Tremie pipe outside casing,
Tremie pipe inside casing,
Casing method or Halliburton method
8. Neat Cement Ratio: Cement and Water, 5.5 to 6gal of h20 to 1 cubic foot of
Portland cement with 3% bentonite to prevent shrinkage
9. Tremie Pipe Outside Casing: Grout placed through small pipe outside casing,
Centering guides are placed along length of casing,
Lower end of casing has drillable plug,
Casing held down by rig so it doesn't float,
Shallow wells a positive displacement pump can be used.
10. Tremie Pipe Inside Casing: Grout Pipe installed temporarily inside casing,
Cement plug or float attached at the bottom of the casing,
Casing is filled with water and grout pumped through pipe,
Casing must be cleaned of all debris after grouting
11. Well Screens: Filtering device allowing water while holding back sand,
.006 TO .250
12. Important Screen Functions: EASILY DEVELOPED,
MINIMAL INCRUSTING TENDENCY,
LOW HEAD LOST THROUGH SCREEN,
CONTROLS SAND PUMPING IN MANY DIFFERENT AQUIFERS
mailto:https://www.stuvia.com/user/Wisdoms
Questions And Correct Answers (Verified Answers)
Plus Rationales 2025 Q&A | Instant Download Pdf
1. Well construction is comprised of the following componets?: drilling, instal-
lation of casing, placing well screens, grouting, DEVELOPMENT
2. Minimum grouting distance?: 10' is code
3. Artesian Well: Artesian pressure is the result of gravity and the confining Aquifer
4. Artesian Well Layers: CONFINING Layer (top)
CONFINED AQUIFER (middle)
IMPERMEABLE Layer (bottom)
5. Types of drilling techniques: Cable tool, Air rotary, Mud rotary, Reverse circu-
lation rotary, Jetting & Driving
mailto:https://www.stuvia.com/user/Wisdoms
, 6. GROUTING: IS THE ACT OF INJECTING CERTAIN SUBSTANCES INTO VOID
SPACE TO REDUCE OR ELIMINATE THEIR PERMEABILITY, CONSOLIDATE OR
INCREASE THEIR STRENGTH.
(Filling space between the casing and bore hole with cement or clay)
7. Methods of Grouting include: Tremie pipe outside casing,
Tremie pipe inside casing,
Casing method or Halliburton method
8. Neat Cement Ratio: Cement and Water, 5.5 to 6gal of h20 to 1 cubic foot of
Portland cement with 3% bentonite to prevent shrinkage
9. Tremie Pipe Outside Casing: Grout placed through small pipe outside casing,
Centering guides are placed along length of casing,
Lower end of casing has drillable plug,
Casing held down by rig so it doesn't float,
Shallow wells a positive displacement pump can be used.
10. Tremie Pipe Inside Casing: Grout Pipe installed temporarily inside casing,
Cement plug or float attached at the bottom of the casing,
Casing is filled with water and grout pumped through pipe,
Casing must be cleaned of all debris after grouting
11. Well Screens: Filtering device allowing water while holding back sand,
.006 TO .250
12. Important Screen Functions: EASILY DEVELOPED,
MINIMAL INCRUSTING TENDENCY,
LOW HEAD LOST THROUGH SCREEN,
CONTROLS SAND PUMPING IN MANY DIFFERENT AQUIFERS
mailto:https://www.stuvia.com/user/Wisdoms
