Bored tube wells in rocky consolidated formations as are encountered i – McqOptions

MCQOPTIONS

1.	Bored tube wells in rocky consolidated formations as are encountered in the South Indian States of our country are usually drilled by _____________
A.	rotary drilling rigs
B.	percussion drilling rigs
C.	down the hole hammer (DTH) rigs
D.	cable method of drilling
Answer» D. cable method of drilling

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