Reservoir Characteristics
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Transcript of Reservoir Characteristics
8/9/2019 Reservoir Characteristics
http://slidepdf.com/reader/full/reservoir-characteristics 1/8
ING. JOHN HARRY RAMIREZ SANCHEZ
ENGLISH TEACHER
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` 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.
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` 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.
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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.
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` 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.
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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