UNE-EN ISO 10414-1:2008 Petroleum and natural gas industries - Field testing of drilling fluids - Part 1: Water-based fluids (ISO 10414-1:2008) (Endorsed by AENOR in January of 2009.)
2009UNE-EN ISO 10414-1:2008 Petroleum and natural gas industries - Field testing of drilling fluids - Part 1: Water-based fluids (ISO 10414-1:2008) (Endorsed by AENOR in January of 2009.)