Black Oil Properties (4.2)

Question 1

Oil Formation Volume Factor

Answer 1

(Bo) Black Oil Model

Question 2

Solution Gas
to Oil Ratio

Answer 2

Rs

Question 3

Solution Gas
to Oil Ratio

Answer 3

Rs

Question 4

It is the ratio of the density of liquid to density
of water. Both taken at standard conditions.

Answer 4

Liquid specific gravity

Question 5

the petroleum industry uses another gravity called

Answer 5

API
gravity

Question 6

is defined as the volume of the r

Answer 6

Bo

Question 7

The change in the oil volume is due to:

Answer 7

•The evolution of gas from the oil as the pressure drops
•Oil expanding due to pressure drop
•Temperature reduction

Question 8

The change in the oil volume is due to:

Answer 8

•The evolution of gas from the oil as the pressure drops
•Oil expanding due to pressure drop
•Temperature reduction

Question 9

Above bubble point as pressure
reduces ___ due to
compressibility.

Answer 9

oil expands

Question 10

Below bubble point ___ as a result of gas
coming out of solution.

Answer 10

oil shrinks

Question 11

•is the amount of gas that evolves from the oil as the oil is
transported from reservoir to surface conditions.
•can also be defined as the number of cubic feet of gas measured at standard conditions which
was dissolved in one barrel of stock tank oil when subjected to reservoir temperature and
pressure.

Answer 11

Rs

Question 12

The surface volumes of both gas and liquid are referred to standard conditions so that
the units are standard cubic feet per stock-tank barrel

Answer 12

Scf/STB

Question 13

Solution gas-oil ratio is also called

Answer 13

dissolved gas-oil ratio and occasionally
gas solubility

Question 14

•Above bubble point pressure
•Oil is undersaturated
•Solution GOR is constant

Answer 14

Gas solubility, Rs