By Ekwere J. Peters PhD PE

The college of Texas method Board of Regents licensed Dr. Ekwere J. Peters as a professor emeritus. within the 85-year heritage of UT PGE simply 5 different professors have bought the celebrated identify: Folkert Brons, Sylvain Pirson, Harry H. energy, Ben H. Caudle and Robert (Bob) Schechter. Peters retired in 2011 after 30 years of engaging in leading edge examine and ideal instructing at UT PGE, leaving his mark on generations of engineers.

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Petrophysics

The collage of Texas procedure Board of Regents authorized Dr. Ekwere J. Peters as a professor emeritus. within the 85-year background of UT PGE merely 5 different professors have obtained the distinguished name: Folkert Brons, Sylvain Pirson, Harry H. energy, Ben H. Caudle and Robert (Bob) Schechter. Peters retired in 2011 after 30 years of carrying out leading edge learn and perfect educating at UT PGE, leaving his mark on generations of engineers.

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Fluid saturation may also be expressed in %. There are two methods of determining the in-situ fluid saturations in a petroleum reservoir rock. The direct approach is to measure the fluid saturations from a core cut from the reservoir. The indirect approach is to measure some other physical property of the rock that can be related to fluid saturation. The direct approach is discussed here. The indirect approach such as using electric logs or capillary pressure measurements to estimate water saturation will be discussed later.

Although fracture porosity is generally small, often 1-2%, the fractures are very useful in allowing fluids to flow more easily through the rock. Therefore, they greatly enhance the flow capacity of the rock. 4. Idealized fractured rock with low fracture porosity. Solution is a chemical reaction in which water with dissolved carbon dioxide reacts with calcium carbonate to form calcium bicarbonate which is soluble. This reaction increases the porosity of the limestone. 3) Chemical Replacement is a chemical reaction in which one type of ion replaces another with a resulting shrinkage in the size of the new compound.

2 in which the small grains fit into the pores created by the large grains, thereby reducing the porosity. 1. Effect of packing on porosity of uniform spheres. 2. Effect of sorting on porosity. (A) Irregular grains, (B) Idealized spherical grains (from Tiab and Donaldson, 2004). 1 shows experimentally measured porosities of various artificial sandpacks. Note the general decrease of porosity with poor sorting for all grain sizes and the approximately constant porosity of the extremely well sorted sands for all grain sizes.

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