Correct

钻井

/ zuānjǐng / 
Strokes

Definition

to drill (e.g. for oil)/a borehole

Example

As a Verb

drill a well

1
Hǎiyáng
海洋
zuānjǐng
钻井

offshore drilling

2
Gòuzào
构造
zuānjǐng
钻井

core drilling

3
Zuānjǐng
钻井
jìlù
记录

drill log

4
Zuānjǐngchuán
钻井船

oil rig