midterm Flashcards
1
Q
what is the equation for formation volume factor where the unit of formation volume factor is ft 3/scf.
A
2
Q
Pressure equations for choke flow are derived based on __________process
A
3
Q
how are horizontal separtors used
A
4
Q
what is deliverability
A
5
Q
what is Guo’s equation for calculating friction factor for turbulent flow in pipes
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6
Q
Once a ________equation is established using either a theoretical or an empirical equation, it can be used to construct well IPR curve.
A
Once a deliverability equation is established using either a theoretical or an empirical equation, it can be used to construct well IPR curve.
7
Q
fluid seperation mainly occurs because of
A
8
Q
what is stage separation
A
9
Q
what is the equation for sonic flow through a choke
A
10
Q
what is gas expansion factor
A
11
Q
what is the Hall and Yarborough’ z-factor Correlation:
A
12
Q
what is the gas material balance equation without water production, injection, water influx, or compressibility
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13
Q
mist flow in gas wells consists of what
A
14
Q
waht is the equation to determine stage pressure
A
15
Q
A
16
Q
what is the equation for psuedotemp and pressure
A
17
Q
Pressure drop through a choke is due to ___________, NOT friction
A
18
Q
what is real gas normalized pressure
A
19
Q
describe pressure
A
20
Q
vertical separators are used to treat what type of well stream
A
21
Q
describe p/z material balance chart types
A
22
Q
the equation for vapor density is
A
23
Q
what is real gas normalized pressure
A
24
Q
According to Standing, the equalibrium ratio can be caluclated by
A
25
WHat are two methods by Katz and Lee to calculate friction factor in pipe
26
describe a hydrocarbon phase diagram
27
what is the combined equations-analytical solution for wellhead nodal analysis
28
what two equations does the bottom hole nodal analysis combine
29
what is sonic flow
30
what is the primary method of separation for a vertical separator
31
what are the compenetns of raw gas and the products after processing
32
waht is the Carr-Kobayashi-Burrows Correlation
33
Once a deliverability equation is established using either a theoretical or an empirical equation, it can be used to construct well ______ curve.
Once a deliverability equation is established using either a theoretical or an empirical equation, it can be used to construct well IPR curve.
34
nV + nL = ?
35
36
what are the well GOR classifications
37
what is the equation for gas capacity of a separator
38
what is the heating value of nat gas
39
what does a typical well IPR curve look like
40
what is the MBE for gas reservoirs
41
what is the equation for gas capacity of a separator
42
43
44
describe tubing head
45
how is psuedopressure and temperature calculated
46
for abnormally pressured reservoirs, exercise caution if \_\_\_\_\_\_\_, and adjust GIS by \_\_\_\_\_\_\_\_\_\_
47
what is IPR
48
how does transient versus stabalized deliverability affect C and n
49
the apparent molecular weights of the liquid and vapor phase is calculated by
50
A separator is normally constructed in such a way that it has the following features
It is equipped with a mist extractor or eliminator near the gas outlet to coalesce small particles of liquid that do not settle out by gravity.
It allows adequate controls consisting of level control, liquid dump valve, gas backpressure valve, safety relief valve, pressure gauge, gauge glass, instrument gas regulator, and piping.
51
what is the isochronal test sequence
52
what's the chemical equation for gas hydrates
53
what is reservoir deliverability
54
what equation is this
55
what is the flow after flow test sequence
56
how can the equilibrium ratio k be calculated (Standing)
57
what does the graphical solution of IPR and TRP curves look like
58
what is a general solution to psuedo steady state flow in a radial reservoir
59
The accuracy of Sachdeva’s choke model can be improved by \_\_\_\_\_\_\_\_\_\_
60
what is a reservoir
61
what is edge water
62
what is the pressure squared approach
a simplified mdoel for the Forchheimer and back pressure models
63
how does low temp separation work
64
what is gas viscosity and its units
65
what is choke performance relationship
66
what is the equilibrium ratio
67
how do the retention times for different well streams differ
68
what is well deliverability
69
what is the The Wichert-Aziz (1972) correlation for correlations for Impurities
70
waht is the equation for critical pressure If the gas composition is not known but gas specific gravity is given for a sweet gas,
71
how is psuedoreduced temp and pressure calcualted
72
what are teh equations for A and B in the Forchheimer model
73
(1) Volumetric gas reservoirs (2) Gas reservoirs with water barriers
Have different what?
74
what does the pressure profile for nodal analysis look like
75
what does data analysis for C and n look like during a flow test
76
77
what is kinematic viscosity
78
79
what is the definition of a field and a pool
80
what are double tubed horiztonal separators used for
81
what is CD
82
what is the empiracal factor of a separator
83
describe a casing head (pic)
84
what are the applications of gas wellhead choke performance
85
the equation for the volume of the liquid and vapor phases
86
for partial water drive reservoirs, exercise caution if \_\_\_\_\_\_\_
87
what is formation volume factor
88
Gas viscosity at elevated pressure can be readily calculated using the following relation:
89
name the 8 properties of natural gas
90
what is nodal analysis
91
what is the definition of natural gas
92
what is the material balance equation for natural gas reservoirs
93
94
95
what does the CD vs. reynolds number for orifice chokes look like
96
what is the Carr-Kobayashi-Burrows correlation
97
what is this equation
For a given amount of gas, if temperature is kept constant and volume is measured at 14.7 psia and an elevated pressure p1 , z-factor can then be determined with the following formula:
98
describe a wellhead (pic)
99
a? b? c?
a) depletion
b) indicates water influx
c) Indicates abnormal pressure
100
what GOR ratio classifies oil, condensate, and gas wells
101
what are these equations
correlation equations
102
what is the Cullender and Smith Method and what is it used to solve for
A vertical well in Louisiana produces 2 MMscf/d of 0.71 gas-specific gravity gas through a 2 7/8-in tubing set to the top of a gas reservoir at a depth of 10,000 ft. At tubing head, the pressure is 800 psia and the temperature is 150 oF; the bottom hole emperature is 200 oF. The relative roughness of tubing is about 0.0006. Calculate the pressure profile along the tubing length and plot the results.
103
what is Sachdeva's model and what is it used for
two phase sonic flow through a choke
104
how do you estimate upstream pressure for a choke
105
xi nL + yi nV = ?
106
what is the combined equation-analytical solution for bottom hole nodal analysis
107
how does a vertical separator eliminate mist
108
what factors affect separation
109
what are two empiracle models for gas deliverability
110
what two equations does the wellhead nodal analysis combine
111
how is two phase flow through a choke calcualted
112
what does q vs p2/p1 graph for sonic and subsonic flow look like
113
what is real gas psuedopressure
114
what is wellhead performance relationship
115
what is the equation for liquid capacity in a separator
116
what is the equation for formation volume factor If expressed in rb/scf, it takes the form of
117
what are horizontal three phase separators used for
118
what is the critical pressure ratio through a choke
119
what are the equations for n and C in the back pressure model
120
what equation is this used for
121
where is the critical point
122
well stream conditions are characterized by
123
what is the difference in the equations for sonic and subsonic flow for dry gas
124
what is the compressibility factor
125
what is the Dempsy equation for viscocity
126
Well deliverability depends on _______ and \_\_\_\_\_\_\_\_.
127
what is Guo's method and what is it used to solve for
A vertical well in Louisiana produces 2 MMscf/d of 0.71 gas-specific gravity gas through a 2 7/8-in tubing set to the top of a gas reservoir at a depth of 10,000 ft. At tubing head, the pressure is 800 psia and the temperature is 150 oF; the bottom hole emperature is 200 oF. The relative roughness of tubing is about 0.0006. Calculate the pressure profile along the tubing length and plot the results. (extra data given to us to solve not included)
128
what is the liquid capacity of a separator
129
what is this equation
130
what does the graphical solution for wellhead performance relationship and choke performance relationship look like
131
describe the christmas tree (pic)
132
when does mist flow in gas wells occur
133
what are the three well deliverability tests
134
what equation is this
135
what are spherical separators used for
136
hydrocarbons versus non hydrocarbons
combustibles versus non combustibles
137
what is the flow equation for a separator
138
waht ist he mixing rule for viscocity
139
what is the Brill and Beggs’ z-factor Correlation:
140
conditions that have great impact on material balance calculations in gas reservoirs are ....
141
what is the flow equation for subsonic flow through a choke
142
what coniditons have great impact on MBE calcualtions
143
what is the modified isochronal test sequence
144
what equation is this
An approximation to a general solution to pseudosteady state flow in a radial-flow gas reservoir is expressed as (Economides 1994):
145
Well deliverability is predicted by \_\_\_\_\_\_\_.
146
what does the CD vs. reynolds number for nozzle chokes look like
