Ad
related to: total porosity formula physics calculator freeamazon.com has been visited by 1M+ users in the past month
Search results
Results From The WOW.Com Content Network
Connected porosity is more easily measured through the volume of gas or liquid that can flow into the rock, whereas fluids cannot access unconnected pores. Porosity is the ratio of pore volume to its total volume. Porosity is controlled by: rock type, pore distribution, cementation, diagenetic history and composition. Porosity is not controlled ...
The porosity is a measure of the total pore space in the soil. This is defined as a fraction of volume often given in percent. The amount of porosity in a soil depends on the minerals that make up the soil and on the amount of sorting occurring within the soil structure.
Porosimetry is an analytical technique used to determine various quantifiable aspects of a material's porous structure, such as pore diameter, total pore volume, surface area, and bulk and absolute densities. The technique involves the intrusion of a non-wetting liquid (often mercury) at high pressure into a material through the use of a ...
Φ T = Total porosity (PHIT), which includes the connected and not connected pore throats. Φ e = Effective porosity which includes only the inter-connected pore throats. V b = bulk volume of the rock. Key equations: V ma + V cl + V fw + V hyd = 1 Rock matrix volume + wet clay volume + water free volume + hydrocarbon volume = bulk rock volume [20]
The concept of permeability is of importance in determining the flow characteristics of hydrocarbons in oil and gas reservoirs, [4] and of groundwater in aquifers. [5]For a rock to be considered as an exploitable hydrocarbon reservoir without stimulation, its permeability must be greater than approximately 100 md (depending on the nature of the hydrocarbon – gas reservoirs with lower ...
Darcy's law is an equation that describes the flow of a fluid flow trough a porous medium and through a Hele-Shaw cell.The law was formulated by Henry Darcy based on results of experiments [1] on the flow of water through beds of sand, forming the basis of hydrogeology, a branch of earth sciences.
In the vast majority of cases, this core analysis and Petroleum Engineering definition of effective porosity equates to total porosity. Effective porosity ϕ e 2 {\displaystyle \phi _{e2}} Effective porosity measured on core samples which are dried in a humidity oven so that clays retain one or two molecular layers of bound water—however ...
The samples' total volume and pore space volume were measured in order to calculate the porosities. Measuring pore space volume. A helium pyrometer was used to calculate the volume of the pores and relied on Boyle's law. (P 1 V 1 =P 2 V 2) and helium gas, which easily passes through tiny holes and is inert, to identify the solid fraction of a ...