What is difference between TOV , GOV and NOV ?

Total Observed Volume  (T.O.V.): –

The total measured volume of all petroleum liquids, Sea Water, and free water at observed temperature and pressure.

Gross Observed Volume (G.O.V.): –

The total volume of all petroleum liquids and S&W, excluding free water, at observed temperature and pressure.

Net Observed Volume (N.O.V.):-

The total volume of all petroleum liquids excluding S&W, and free water at observed temperature and pressure.

RAVI PRAKASH