1、The constituents and their ( )in the natural gas is called the composition of natural gas.
A、mole fraction
B、proportions
C、mass fraction
D、volume fraction
2、The z factor depends on ( ), can be measured in the laboratory or obtained from correlations.
A、gas composition
B、pressure
C、temperature
D、specific gravity
3、Several gas properties have the same values for similar gases at identical values of ( ).
A、reduced pressure
B、critical pressure
C、reduced temperature
D、critical temperature
4、Under standard conditions, we can express the specific gravity of a gas mixture as ratio of apparent molecular weight of the gas to ( ).
A、30
B、29
C、28
D、16
5、If a significant fraction of heavy components is present in the natural gas mixture, laboratory measurements of ( ) of the C7+ fraction are required to use mixing rules.
A、the molecular weight
B、mole fraction
C、gravity
D、critical temperature
E、critical pressure
6、The FVF of a gas is defined as the ratio of gas volume at reservoir temperature and pressure to the volume at ( ).
A、stock tank condition
B、surface condition
C、standard condition
D、reservoir condition
7、For an ideal gas, the isothermal coefficient of compressibility is the reciprocal of ( ).
A、z factor
B、temperature
C、molecular weight
D、pressure
8、Under the condition that reservoir pressure is greater than the original bubblepoint pressure, the solution gas oil ratio is ( ) the solution gas oil ratio at bubblepoint.
A、greater than
B、equal to
C、less than
D、less or equal to
9、The concentration of dissolved solids in water can be measured with several different units, including( ).
A、 parts per million
B、 weight percent
C、 grams of salt per liter
D、 grams Nacl per liter
10、The effect of non-Darcy flow usually is incorporated into fluid flow equations as an additional ( )that is rate dependent.
A、skin factor
B、pressure drop
C、rate change
D、pressure change
