"盲目开掘油井" can be translated into English as "blindly drilling oil wells" or "drilling oil wells indiscriminately".
"Blindly" emphasizes the lack of planning, research, or proper assessment before undertaking the action.
"Indiscriminately" conveys the idea of doing so without careful selection or consideration of consequences.
Both expressions capture the essence of acting without due regard for the potential risks or negative outcomes.