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varlet    
n. 恶棍

恶棍

varlet
n 1: a deceitful and unreliable scoundrel [synonym: {rogue},
{knave}, {rascal}, {rapscallion}, {scalawag}, {scallywag},
{varlet}]
2: in medieval times a youth acting as a knight's attendant as
the first stage in training for knighthood [synonym: {page},
{varlet}]


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  • Porosity - SEG Wiki
    A porous rock consists of a solid skeleton and a continuously connected fluid phase There are various types of porositiy Intergranular porosity is common in sandstone
  • Porosity of Rocks - Table - Matmake
    Porosity refers to the volume percentage of void spaces (pores) within a rock or sediment These pores can be filled with air, water, or other fluids The following table provides a curated list of porosity values for different rocks
  • How can we tell whether rocks are porous and or permeable?
    Rocks that have few connected pore spaces to allow fluid or gas to pass through are called “tight” It is the layers of “tight” rocks that keep oil, gas, water and brine trapped underground We can also look at the rocks directly to view what type of porosity they have
  • 11. 12: Reading- Porosity and Permeability - Geosciences LibreTexts
    Porosity is an intrinsic property of every material It refers to the amount of empty space within a given material In a soil or rock the porosity (empty space) exists between the grains of minerals In a material like gravel the grains are large and there is lots of empty space between them since they don’t fit together very well
  • 1. Introduction to Rock Properties - Imperial College London
    The most important fact about reservoir rocks is that, by definition, they are not completely solid, but rather are porous to one degree or another The degree to which they are porous is quantified by a parameter known as the porosity The fact that the rocks are porous allows them to hold fluid
  • 12 Types of Porous Rocks (With Examples of Porous Rocks)
    To be considered a porous rock, the rock must be able to hold and retain fluids This means that the pores or voids in the rock must be interconnected, so that fluid can flow freely through them There are two main types of porosity: primary porosity and secondary porosity
  • Porosity and Permeability - Louisiana
    More specifically, porosity of a rock is a measure of its ability to hold a fluid Mathematically, it is the open space in a rock divided by the total rock volume (solid and space) Permeability is a measure of the ease of flow of a fluid through a porous solid
  • Porosity and Permeability: Definition and Types - GeologyHub. com
    Porosity is the percentage of the bulk volume of a rock or soil that is occupied by interstices, whether isolated or connected Effective porosity is the percent of the total volume of a given mass of soil or rock that consists of interconnected interstices
  • Porosity | Fundamentals of Fluid Flow in Porous Media - PERM Inc.
    From the reservoir engineering standpoint, porosity is one of the most important rock properties, a measure of space available for storage of hydrocarbons Quantitatively, porosity is the ratio of the pore volume to the total volume (bulk volume)
  • Porosity - Energy Education
    A porous rock contains a large number of tiny spaces, which allows it to hold oil, natural gas or even underground water! If an object is porous, it has a great ability to hold fluid within itself Sponges, wood, rubber, and some rocks are porous materials





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