Reservoir Characteristics

8/9/2019 Reservoir Characteristics

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ING. JOHN HARRY RAMIREZ SANCHEZ

ENGLISH TEACHER



` Certain fundamental conditions must be present in the

reservoirs as, the porosity of the rock that indicates the

percentage of capacity of storage of the total volume of

the rock; the total volume of the reservoir that

considerate the average thickness and extension; thepresence of hydrocarbons at the place, given by the

percentage of saturation, that is to say the percentage of

the volume that form the pores and the space occupied

for the hydrocarbons. These basic factors serve toestimate the volumetric aspect of the location.



` The r eser ir r essur e is ver i rt t ecause thisi uces the movement of thepetr oleum fr om the r eser voir confines towar the wells andfr om the bottom to the

surf ace. f the magnitude thepr essur e depends if thepetr oleum flows natur all withf or ce until the surf ace or if, onthe contr ar , the pr essur e isnot enough so that thepetr oleum arrives until certain

level in the well.



In the practice we must take measures of

temperature in the wells to have an idea of the

temperature gradient that generally you

expressed in 1 °C by the way constant interval of depth. The knowledge of the gradient of

temperature it is important and applicable in tasks

as design and casing selection and production

strings, perforation fluids and fluids for wellsworkovers, cementations and production studies.



` The oil viscosity represents their characteristic of

fluency. The extra heavy oils are more viscous

than the heavy oils. The heavy oils more viscous

than the medium. The medium more viscous thanthe light. The light and condensed are the most

fluids. Another index of appreciation of the oil

fluency, is the °API gravity that indicates the

fluency.



The hydrostatic pressure is the total pressure created by the weight of acolumn of fluid, acting in any point in a well. Hydro it means water, or fluid that exercises pressure as water, and static means withoutmovement. This way hydrostatic pressure is the pressure originated bythe density and the height of a stationary column

(without movement) of fluid.

We already know how to calculate a gradient of pressure of the weight of a fluid. The pressure hydrostatics can be calculated of a gradient of pressure to a certain point:

Hydrostatic pressure = Gradient of Pressure x TVD

Or, it can be calculated for:

Hydrostatic pressure = Density of the flowing x Factor of conversion x Profundidad

Reservoir Characteristics

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