How do you calculate Stoiip?
Both estimates rely on the volumetric equation for calculating stock tank oil originally in-place (STOOIP), in barrels, is as follows: STOOIP = 7758 (bbls/acre-ft) x Oil Reservoir Area (acres) x Average Net Pay Thickness (ft) x Porosity (fraction) x Oil Saturation (fraction) x Oil Shrinkage (1/Bo)
What is Stoiip stand for?
stock tank original oil-in-place
Oil-in-place is also known as stock tank original oil-in-place (STOOIP) or stock tank oil-initially-in-place (STOIIP), referring to the oil in place before the commencement of production.
What is gas place?
Original oil in place (OOIPoriginal oil in place) and original gas in place (OGIPoriginal gas in place) refer to the total volume of hydrocarbon stored in a reservoir prior to production.
How are oil estimates calculated?
The estimating of original oil-in-place is based on calculations using the volumetric method or the material balance method when sufficient factual data are available concerning reservoir rock, fluid properties, reservoir limits, and production performance.
What is Sophih?
Hydrocar Ft (SOPHIH) – Hydrocarbon Feet is the summation of each sample interval multiplied by each Porosity/(Condition 1) times 1.0 – Water Sat/(Condition 2) passing all cutoff criteria. Requires porosity and water saturation curves.
How do you calculate gas in place?
5.2: Estimation of Original Gas In-Place, OGIP, Using the Volumetric Method
- Equation 5.01a. or, equivalently (after applying the Saturation Constant): G=Vgrv(¯hn/¯hg)ˉϕ(1−¯Swι)¯Bgι
- Equation 5.01b. Where: G is the original-gas-in-place of the reservoir, SCF.
- Equation 5.02. Where: Vgrv is the gross rock volume, ft.
What is Giip in oil and gas?
an estimated measure of the total amount of gas contained in a reservoir and, as such, a higher figure than Recoverable Gas. May also be termed Gas initially in place (GIIP) to describe the volume of gas that exists at initial discovery.