(poço aberto)1. [Petróleo] open hole Significado É a parte perfurada de um poço sem revestimento. Meaning 1. any wellbore in which casing has not been set. 2. open or cased hole in which no drill pipe or tubing is suspended. 3. the portion of the wellbore that has no casing. (www.osha.gov/SLTC/etool...)