Provide Gas Recovery Factor to calculate estimated ultimate recovery (EUR) volume.The value varies depending on the fluid and the temperature and pressure of the reservoir and the surface. This parameter converts the volume of gas in the reservoir into the volume at the surface. Provide Gas Formation Volume Factor, to calculate original gas in place (OGIP/GIIP).Provide Oil Recovery Factor to calculate estimated ultimate recovery (EUR) volume.This parameter converts the volume of oil at reservoir conditions to the volume at the surface. Provide Oil Formation Volume Factor (also called shrinkage factor), to calculate stock tank oil originally/initially in place (STOOIP/STOIIP).Provide Water Saturation to calculate hydrocarbon volume.Provide Porosity to calculate pore volume.Provide Net/Gross Ratio to calculate net volume.A polygon must be selected if constants are used for the structure and contact(s).If a polygon is not selected, the area is defined by the entire horizon. Polygon: Constrain the area of calculation with a map polygon.Units: Choose the units to use for the output, including oil and/or gas volumes if Oil and/or Gas ratios are provided.Multiple Constants: one or more depth values (separated by commas) AND/OR a sequence (as min-max format).Horizon: a horizon with optional depth offset.Contact(s): Choose Horizon, Constant, or Multiple Constants to define the contact.Base Structure: ('Dual' case only): Choose a horizon or specify a constant to define the base of the structure.The horizon must be in depth or convertible to depth (see How it Works (Time-Depth Conversion)).If a horizon is chosen, an offset distance above or below (TVD) can be added.Top Structure: Choose a horizon or specify a constant to define the top of the structure.This will calculate area-depth-GRV at specific intervals throughout a structure. Adjust these parameters to define the top and base of the structure and specify a range of contacts and an interval to output results.

Oil formation volume factor