油田 ゆでん掘削 くっさく施設 しせつでしょう
yudenkussakushisetsudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 油田掘削施設

1. Oil drilling facility, likely.; Probably an oil drilling facility.

Polite
Presumptive
Conjecture