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Boreholes and Drilling

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Questions and Answers

What is the primary purpose of drilling boreholes?

To obtain geologic information and explore mineral resources (correct)

To extract groundwater

To create underground tunnels for construction

To monitor seismic activity

What is a common problem encountered during borehole drilling?

Drilling at an angle

Insufficient drilling equipment

Rock hardness

The sag of the rods (correct)

What is the function of hydrofluoric acid in borehole survey methods?

To produce a mark showing the dip (correct)

To clean the borehole

To strengthen the drill rods

To detect mineral deposits

What type of boreholes are used in underground mines?

Small diameter Signup and view all the answers

What is an application of boreholes in coal companies?

To draw contour maps of the coal bed Signup and view all the answers

What is a characteristic of directional drilling?

Drilling at an angle to create curved holes Signup and view all the answers

What is used to measure the dip in the Oriented Drill Rods and Hydrofluoric Acid Method?

Clinometer Signup and view all the answers

What is the current development area in borehole surveys?

Development of MEMS gyros Signup and view all the answers

What are extracted with the drilling fluid?

Cuttings Signup and view all the answers

What is a function of boreholes besides research?

Production wells for hydrocarbons Signup and view all the answers

What is used to test the surrounding rock in the borehole?

Sensor Signup and view all the answers