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  2. Drilling formula sheets - Wikipedia

    en.wikipedia.org/wiki/Drilling_formula_sheets

    Drilling Formula Sheets is a set of Drilling Formulas used commonly by drilling engineers in the onshore and offshore oil drilling industry. They are used as part of a key piece of engineering work called Well Control .

  3. Buckley–Leverett equation - Wikipedia

    en.wikipedia.org/wiki/Buckley–Leverett_equation

    In fluid dynamics, the Buckley–Leverett equation is a conservation equation used to model two-phase flow in porous media. [1] The Buckley–Leverett equation or the Buckley–Leverett displacement describes an immiscible displacement process, such as the displacement of oil by water, in a one-dimensional or quasi-one-dimensional reservoir.

  4. Black-oil equations - Wikipedia

    en.wikipedia.org/wiki/Black-oil_equations

    The black-oil equations are a set of partial differential equations that describe fluid flow in a petroleum reservoir, constituting the mathematical framework for a black-oil reservoir simulator. [1] The term black-oil refers to the fluid model, in which water is modeled explicitly together with two hydrocarbon components, one (pseudo) oil ...

  5. Oil in place - Wikipedia

    en.wikipedia.org/wiki/Oil_in_place

    Lastly the volume at reservoir conditions (high pressures and temperatures) is converted to the associated volume at surface conditions. [3] Oil in place must not be confused with oil reserves, that are the technically and economically recoverable portion of oil volume in the reservoir. Current recovery factors for oil fields around the world ...

  6. Oil and gas reserves and resource quantification - Wikipedia

    en.wikipedia.org/wiki/Oil_and_gas_reserves_and...

    The materials balance method for an oil or gas field uses an equation that relates the volume of oil, water and gas that has been produced from a reservoir and the change in reservoir pressure to calculate the remaining oil & gas. It assumes that, as fluids from the reservoir are produced, there will be a change in the reservoir pressure that ...

  7. Specific storage - Wikipedia

    en.wikipedia.org/wiki/Specific_storage

    These equations relate a change in total or water volume (or ) per change in applied stress (effective stress — or pore pressure — ) per unit volume. The compressibilities (and therefore also S s ) can be estimated from laboratory consolidation tests (in an apparatus called a consolidometer), using the consolidation theory of soil mechanics ...

  8. Reservoir simulation - Wikipedia

    en.wikipedia.org/wiki/Reservoir_simulation

    A simulated Top of Structure, depth map from geological data in a full field model. (GSI MERLIN simulator) Reservoir simulation is an area of reservoir engineering in which computer models are used to predict the flow of fluids (typically, oil, water, and gas) through porous media.

  9. Runoff model (reservoir) - Wikipedia

    en.wikipedia.org/wiki/Runoff_model_(reservoir)

    Contrary to the linear reservoir, the non linear reservoir has a reaction factor A that is not a constant, [3] but it is a function of S or Q (figure 2, 3). Normally A increases with Q and S because the higher the water level is the higher the discharge capacity becomes.