| No |
QUESTIONS |
SELECT CORRECT ANSWER |
PUT CORRECT NUMBER HERE |
1 |
By method of impact on rocks drilling can be classified as... |
1. Horizontal drilling and vertical drilling.
2. Mechanical and non-mechanical.
3. Percussive drilling and cable drilling.
4. Rotary drilling and mechanical drilling. |
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2 |
The most common type of percussive drilling is... |
1. Non-mechanical drilling.
2. Rotary drilling.
3. Cable drilling.
4. Mechanical drilling. |
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3 |
During rotation drilling rock crushing occurs as a result of... |
1. High reservoir fluid pressure.
2. Drilling bit falling on the well bottom and crushing the rock.
3. Simultaneous impact of load and torque on the bit.
4. All of the above. |
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4 |
What is "turbodrill"? |
1. Downhole engine used to rotate drilling bit in the process of well drilling.
2. The main drilling rig engine providing power to all mechanisms.
3. Engine used to drive screws into pipe string for its suspension.
4. Engine used for drilling string rotation. |
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5 |
What is "electric drill"? |
1. Downhole engine used to rotate drilling bit in the process of well drilling.
2. The main drilling rig engine providing power to all mechanisms.
3. Engine used to drive screws into pipe string for its suspension.
4. Engine used for drilling string rotation. |
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6 |
What is "screw engine"? |
1. Downhole engine used to rotate drilling bit in the process of well drilling.
2. The main drilling rig engine providing power to all mechanisms.
3. Engine used to drive screws into pipe string for its suspension.
4. Engine used for drilling string rotation. |
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7 |
What is "drilling string"? |
1. Pipeline for drilling mud injection into the well.
2. Drill line to suspend drilling equipment.
3. An assembly of drill pipes in the well made up together.
4. Drilling crew normally consisting of 4 persons. |
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8 |
What is drawworks used for? |
1. Mixing of drilling mud.
2. Winding of drill line.
3. Identification of geological structures.
4. None of the above. |
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9 |
What are "drilling cuttings"? |
1. Sharp edges of drilling bit.
2. Pieces of drilled out rock.
3. Cuts made on the rock with drilling bit.
4. Solids added into drilling mud to increase drilling efficiency. |
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10 |
What is "drilling mud"? |
1. Mixture of clay, water and various chemicals used for drilling.
2. Mud generated at drilling site in the process of drilling.
3. Mud contained in the formation and released in the process of drilling.
4. Normal road mud used for well drilling. |
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11 |
How are drilling cuttings removed from the well? |
1. Cuttings remain on the well bottom.
2. Cuttings are retrieved from the well with special tools.
3. Cuttings are carried over to the surface with drilling mud.
4. Cuttings are squeezed into formation with drilling mud. |
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12 |
What is core taking used for? |
1. Studying properties of drilled rock.
2. Studying composition and structure of rock.
3. Studying composition and properties of fluid saturating the rock.
4. All of the above. |
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