1、The basis of decline curve analysis is that future production continues to follow the past trend, we can use these models to estimate ( ).
A、original gas in place
B、ultimate gas reserves
C、remaining productive life
D、formation permeability
E、skin factor
2、Depend on the value of the decline exponent has different forms, these forms of decline are ( ).
A、exponential
B、harmonic
C、hyperbolic
D、Aprs
3、The Arps’ decline equation is based on important and widely violated assumptions including ( ).
A、constant BHP
B、unchanging drainage area
C、constant k and s
D、boundary dominated flow
4、For exponential decline, there are some straight lines of ( ).
A、lgq VS t
B、lgq VS Gp
C、q VS Gp
D、q VS t
5、（ ）called constant percentage decline, is characterized by a decrease in production rate per unit of time .
A、exponential
B、harmonic
C、hyperbolic
D、Aprs
6、The Fetkovich decline type curves are based on ( ) to the flow equations for production at constant BHP.
A、empirical solution
B、analytical solution
C、actual solution
D、practical solution
7、Application of the Fetkovich type curves, we can estimate ( ).
A、gas reserves
B、permeability
C、reservoir pore volume
D、skin factor
E、productive life
8、Carter offered improved accuracy by plotting functions that include the changes of parameters ( )in gas properties with pressure.
A、FVF
B、Viscosity
C、Compressibility
D、density
9、For the harmonic Decline, the decline exponent is ( ).
A、equal to 1
B、less than 1
C、larger than 0
D、equal to 0
10、To solve the arps’ equation, we need to calculate three parameters of ( ).
A、initial flow rate
B、initial decline rate
C、decline exponent
D、time
