Answer Happy

8. For sweep through purging method, of volumes of purge gas is required to almost completely displace the original mixture for ensuring a complete mixture. 9. Flammable gas-oxidant mixture might be controlled by or by 10. Power to the pumping units should be and to eliminate potential hazards during well servicing operations. 11. Marine pollution includes those that arise from offshore 12. Offshore activities contribute about of the overall pollution in ocean environment. 13. Base oil of drilling fluid in use today is formulated with or 14. Produced water during drilling operation contains and 15. undergoes various stages in which each stage pollutes the marine environment significantly. 16. The first step in the removal of hydrocarbons from water is normally