CWD Well Drilling Techniques & Equipment

Question 1

What is the primary purpose of using a mud rotary drilling method?

Accepted Answer

To stabilize the borehole and remove cuttings efficiently

Answer

To drill through solid rock formations.

Answer

To improve groundwater recharge.

Answer

To install casing during drilling.

Question 2

Which component is responsible for rotating the drill bit in a cable tool drilling rig?

Accepted Answer

Walking beam

Answer

Kelly bar

Answer

Swivel

Answer

Drill collar

Question 3

Why is it important to use drilling mud during rotary drilling?

Accepted Answer

To cool the bit and stabilize the borehole

Answer

To provide lubrication only.

Answer

To prevent the rig from overheating.

Answer

To improve bit speed.

Question 4

What is the purpose of a casing in well drilling?

Accepted Answer

To line the borehole and prevent collapse

Answer

To increase water pressure.

Answer

To reduce drilling time.

Answer

To filter the water before pumping.

Question 5

Which drill bit is most suitable for drilling through hard rock formations?

Accepted Answer

Tricone roller bit

Answer

Drag bit

Answer

PDC bit

Answer

Diamond coring bit

Question 6

What is the function of a drilling rig’s mud pump?

Accepted Answer

To circulate drilling fluid through the system

Answer

To power the drill bit.

Answer

To control rig speed.

Answer

To supply air to the compressor.

Question 7

Why is it necessary to develop a well after drilling?

Accepted Answer

To improve well efficiency and water quality

Answer

To test the water temperature.

Answer

To install the pump.

Answer

To deepen the borehole.

Question 8

Which safety measure is essential when operating drilling equipment?

Accepted Answer

Wearing appropriate personal protective equipment (PPE)

Answer

Avoiding protective gear for flexibility.

Answer

Using equipment without manuals.

Answer

Working alone for faster results.

Question 9

What is the role of a well screen in a drilled well?

Accepted Answer

To allow water entry while filtering out sediments

Answer

To cap the well permanently.

Answer

To pump water into the aquifer.

Answer

To block all external fluids.