NGWA General Drilling Exam: Study Questions and
Review Guide With Complete Solution
Prior to setting the rig, you should... - ANSWER -1. Make sure there are no
overhead power lines within at least 20' of the mast.
2. Locate all buried materials.
3. Verify you are on the right property and meet the correct setback requirements.
Confined space entry rules require... - ANSWER -1. Shoring of trench walls over
4' deep.
2. Establishment of buddy system.
3. Have driller's assistant check jacks as operator levels rig.
In setting up and leveling the rig, the right procedure is to... - ANSWER -1. Use
suitable jack pads for stabilization.
2. Position rig for minimum leveling.
3. Have driller's assistant check jacks as operator levels rig.
(T/F) A well may be used as sewage disposal site only if it is cased to the bottom
of the borehole. - ANSWER -False.
When considering the well site, the more important thing to consider is the... -
ANSWER -... place where it is least likely to be contaminated.
Air forced down the drill pipe... - ANSWER -... clears drill cuttings.
The best method to drill a domestic water supply well in cavernous hard rock
would be... - ANSWER -... cable tool.
The advantage(s) of reverse circulation drilling include(s)... - ANSWER -...
porosity and permeability are relatively undisturbed.
The following drill rig is the least acceptable to drill through a consolidated shale
in sandstone formation... - ANSWER -... a bucket rig.
, (T/F) Cable tool rigs are advantageous for the following reasons:
1. Straightness of well.
2. Minimum maintenance.
3. Economical Use. - ANSWER -True.
(T/F) Drilling mud viscosity can be accurately estimated by visual inspection. -
ANSWER -False.
Chain and drive shaft guards... - ANSWER -... should be kept in place.
In performing adjusts to components that are driven by clutches and/or drive
shafts, you must... - ANSWER -... shut unit down and lock out before adjustments
are made.
(T/F) A drilling fluid should do all of the following:
1. Cool the bit.
2. Promote longevity.
3. Remove cuttings from the bit surface.
4. Transport cuttings to the surface.
5. Plug lost circulation zones.
6. Promote hole stability. - ANSWER -True.
A good preventative maintenance program will create... - ANSWER -... operators
who have a thorough understanding of equipment.
Drilling rigs should be fueled... - ANSWER -... in the morning before starting the
drill.
Drill rig or pump hoist engines should not be started unless... - ANSWER -...
clutches are disengaged and gears are in neutral.
Drilling mud should... - ANSWER -... be specially designed to meet the specific
conditions for each well.
Review Guide With Complete Solution
Prior to setting the rig, you should... - ANSWER -1. Make sure there are no
overhead power lines within at least 20' of the mast.
2. Locate all buried materials.
3. Verify you are on the right property and meet the correct setback requirements.
Confined space entry rules require... - ANSWER -1. Shoring of trench walls over
4' deep.
2. Establishment of buddy system.
3. Have driller's assistant check jacks as operator levels rig.
In setting up and leveling the rig, the right procedure is to... - ANSWER -1. Use
suitable jack pads for stabilization.
2. Position rig for minimum leveling.
3. Have driller's assistant check jacks as operator levels rig.
(T/F) A well may be used as sewage disposal site only if it is cased to the bottom
of the borehole. - ANSWER -False.
When considering the well site, the more important thing to consider is the... -
ANSWER -... place where it is least likely to be contaminated.
Air forced down the drill pipe... - ANSWER -... clears drill cuttings.
The best method to drill a domestic water supply well in cavernous hard rock
would be... - ANSWER -... cable tool.
The advantage(s) of reverse circulation drilling include(s)... - ANSWER -...
porosity and permeability are relatively undisturbed.
The following drill rig is the least acceptable to drill through a consolidated shale
in sandstone formation... - ANSWER -... a bucket rig.
, (T/F) Cable tool rigs are advantageous for the following reasons:
1. Straightness of well.
2. Minimum maintenance.
3. Economical Use. - ANSWER -True.
(T/F) Drilling mud viscosity can be accurately estimated by visual inspection. -
ANSWER -False.
Chain and drive shaft guards... - ANSWER -... should be kept in place.
In performing adjusts to components that are driven by clutches and/or drive
shafts, you must... - ANSWER -... shut unit down and lock out before adjustments
are made.
(T/F) A drilling fluid should do all of the following:
1. Cool the bit.
2. Promote longevity.
3. Remove cuttings from the bit surface.
4. Transport cuttings to the surface.
5. Plug lost circulation zones.
6. Promote hole stability. - ANSWER -True.
A good preventative maintenance program will create... - ANSWER -... operators
who have a thorough understanding of equipment.
Drilling rigs should be fueled... - ANSWER -... in the morning before starting the
drill.
Drill rig or pump hoist engines should not be started unless... - ANSWER -...
clutches are disengaged and gears are in neutral.
Drilling mud should... - ANSWER -... be specially designed to meet the specific
conditions for each well.
