Tarek Ahmed's Working Guide to Reservoir Rock Properties and Fluid Flow PDF
By Tarek Ahmed
Reservoir Rock houses and Fluid stream covers houses of usual rocks and fluids which are vital in Petroleum and common gasoline Engineering. during this ebook significant emphasis is put on fluid garage in reservoir rocks and in move of fluids in the course of the rock's pore constitution. those phenomena dominate calculations which are universal within the parts of reservoir and construction engineering. This booklet is designed for technical execs and introduces readers to the basic in addition to the complex elements of reservoir engineering. Theoretical thoughts coupled with a number of functional case histories are provided to aid reservoir and exploitation engineers of their basic functions-the choice of oil and fuel reserves and the maximization of hydrocarbon restoration below basic, secondary, and tertiary schemes.Critical homes of reservoir rocks Fluid (oil, water, and fuel) PVT relationships how you can calculate hydrocarbons firstly in position Dynamic ideas to evaluate reservoir functionality Parameters that effect well/reservoir functionality through the years
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Extra info for Working Guide to Reservoir Rock Properties and Fluid Flow
This is the defining equation for capillary pressure in a porous medium. 44 2. FUNDAMENTALS OF ROCK PROPERTIES There are three types of capillary pressure: • Water-oil capillary pressure (denoted Pcwo). • Gas-oil capillary pressure (denoted Pcgo). • Gas-water capillary pressure (denoted Pcgw). Applying the mathematical definition of the capillary pressure as expressed by Equation 2-24, the three types of capillary pressure can be written as pcwo ¼ po À pw pcgo ¼ pg À po pcgw ¼ pg À pw where pg, po, and pw represent the pressure of gas, oil, and water, respectively.
The authors proposed a set of tabulated properties that were generated by analyzing the physical properties of 26 condensates and crude oil systems. These generalized properties are given in Table 1-2. 06540 C45 Permission to publish by the Society of Petroleum Engineers of AIME. Copyright SPE-AIME. Ahmed (1985) correlated Katz-Firoozabadi–tabulated physical properties with the number of carbon atoms of the fraction by using a regression model. The generalized equation has the following form: y ¼ a1 þ a2 n þ a3 n2 þ a4 n3 þ ða5 =nÞ where (1-1) y ¼ any physical property n ¼ number of carbon atoms, that is, 6, 7, .
This displacing process is termed the imbibition process and the resulting curve is termed the capillary pressure imbibition curve. The process of saturating and desaturating a core with the nonwetting phase is called capillary hysteresis. Figure 2-7 shows typical drainage and imbibition capillary pressure curves. The two capillary pressure-saturation curves are not the same. This difference in the saturating and desaturating of the capillarypressure curves is closely related to the fact that the advancing and receding contact angles of fluid interfaces on solids are different.
Working Guide to Reservoir Rock Properties and Fluid Flow by Tarek Ahmed