conventional hydrocarbon reserves Flashcards
1
Q
reservoir rocks
A
rocks that are sufficiently porous to store hydrocarbons and permeable enough to allow water/oil/gas through it relatively easily.
2
Q
Porosity
A
the proportion of the rock that is void space
3
Q
Permeability
A
the ability of a rock, sediment or soil to permit fluids to flow through it. In the oil industry it is usually measured in Darcys (D) or milliDarcys (mD). (0.987 x 10-12 m2 = 1 D)
4
Q
Porosity eq
A
((total volume – solid volume) × 100) /
total volume
5
Q
Primary porosity
A
develops at the time the rock was first formed. For example, gaps between grains of sand on a beach, that become pores when that sand is lithified.
6
Q
Secondary porosity
A
gaps in the rock. after it has formed.
7
Q
are permeability and porosity directly related?
A
vaguely but not directly.
8
Q
A
9
Q
A
