midterm Flashcards
what is the equation for formation volume factor where the unit of formation volume factor is ft 3/scf.
Pressure equations for choke flow are derived based on __________process
how are horizontal separtors used
what is deliverability
what is Guo’s equation for calculating friction factor for turbulent flow in pipes
Once a ________equation is established using either a theoretical or an empirical equation, it can be used to construct well IPR curve.
Once a deliverability equation is established using either a theoretical or an empirical equation, it can be used to construct well IPR curve.
fluid seperation mainly occurs because of
what is stage separation
what is the equation for sonic flow through a choke
what is gas expansion factor
what is the Hall and Yarborough’ z-factor Correlation:
what is the gas material balance equation without water production, injection, water influx, or compressibility
mist flow in gas wells consists of what
waht is the equation to determine stage pressure
what is the equation for psuedotemp and pressure
Pressure drop through a choke is due to ___________, NOT friction
what is real gas normalized pressure
describe pressure
vertical separators are used to treat what type of well stream
describe p/z material balance chart types
the equation for vapor density is
what is real gas normalized pressure
According to Standing, the equalibrium ratio can be caluclated by
WHat are two methods by Katz and Lee to calculate friction factor in pipe
describe a hydrocarbon phase diagram
what is the combined equations-analytical solution for wellhead nodal analysis
what two equations does the bottom hole nodal analysis combine
what is sonic flow
what is the primary method of separation for a vertical separator
what are the compenetns of raw gas and the products after processing
waht is the Carr-Kobayashi-Burrows Correlation
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.
nV + nL = ?
what are the well GOR classifications
what is the equation for gas capacity of a separator
what is the heating value of nat gas
what does a typical well IPR curve look like
what is the MBE for gas reservoirs
what is the equation for gas capacity of a separator
describe tubing head
how is psuedopressure and temperature calculated
for abnormally pressured reservoirs, exercise caution if _______, and adjust GIS by __________
what is IPR
how does transient versus stabalized deliverability affect C and n
the apparent molecular weights of the liquid and vapor phase is calculated by
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.
what is the isochronal test sequence
what’s the chemical equation for gas hydrates
what is reservoir deliverability
what equation is this
what is the flow after flow test sequence
how can the equilibrium ratio k be calculated (Standing)
what does the graphical solution of IPR and TRP curves look like
what is a general solution to psuedo steady state flow in a radial reservoir
The accuracy of Sachdeva’s choke model can be improved by __________
what is a reservoir
what is edge water
what is the pressure squared approach
a simplified mdoel for the Forchheimer and back pressure models
how does low temp separation work
what is gas viscosity and its units
what is choke performance relationship
what is the equilibrium ratio
how do the retention times for different well streams differ
what is well deliverability
what is the The Wichert-Aziz (1972) correlation for correlations for Impurities
waht is the equation for critical pressure If the gas composition is not known but gas specific gravity is given for a sweet gas,
how is psuedoreduced temp and pressure calcualted
what are teh equations for A and B in the Forchheimer model
(1) Volumetric gas reservoirs (2) Gas reservoirs with water barriers
Have different what?
what does the pressure profile for nodal analysis look like
what does data analysis for C and n look like during a flow test
what is kinematic viscosity
what is the definition of a field and a pool
what are double tubed horiztonal separators used for
what is CD
what is the empiracal factor of a separator
describe a casing head (pic)
what are the applications of gas wellhead choke performance
the equation for the volume of the liquid and vapor phases
for partial water drive reservoirs, exercise caution if _______
what is formation volume factor
Gas viscosity at elevated pressure can be readily calculated using the following relation:
name the 8 properties of natural gas
what is nodal analysis
what is the definition of natural gas
what is the material balance equation for natural gas reservoirs
what does the CD vs. reynolds number for orifice chokes look like
what is the Carr-Kobayashi-Burrows correlation
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:
describe a wellhead (pic)
a? b? c?
a) depletion
b) indicates water influx
c) Indicates abnormal pressure
what GOR ratio classifies oil, condensate, and gas wells
what are these equations
correlation equations
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.
what is Sachdeva’s model and what is it used for
two phase sonic flow through a choke
how do you estimate upstream pressure for a choke
xi nL + yi nV = ?
what is the combined equation-analytical solution for bottom hole nodal analysis
how does a vertical separator eliminate mist
what factors affect separation
what are two empiracle models for gas deliverability
what two equations does the wellhead nodal analysis combine
how is two phase flow through a choke calcualted
what does q vs p2/p1 graph for sonic and subsonic flow look like
what is real gas psuedopressure
what is wellhead performance relationship
what is the equation for liquid capacity in a separator
what is the equation for formation volume factor If expressed in rb/scf, it takes the form of
what are horizontal three phase separators used for
what is the critical pressure ratio through a choke
what are the equations for n and C in the back pressure model
what equation is this used for
where is the critical point
well stream conditions are characterized by
what is the difference in the equations for sonic and subsonic flow for dry gas
what is the compressibility factor
what is the Dempsy equation for viscocity
Well deliverability depends on _______ and ________.
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)
what is the liquid capacity of a separator
what is this equation
what does the graphical solution for wellhead performance relationship and choke performance relationship look like
describe the christmas tree (pic)
when does mist flow in gas wells occur
what are the three well deliverability tests
what equation is this
what are spherical separators used for
hydrocarbons versus non hydrocarbons
combustibles versus non combustibles
what is the flow equation for a separator
waht ist he mixing rule for viscocity
what is the Brill and Beggs’ z-factor Correlation:
conditions that have great impact on material balance calculations in gas reservoirs are ….
what is the flow equation for subsonic flow through a choke
what coniditons have great impact on MBE calcualtions
what is the modified isochronal test sequence
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):
Well deliverability is predicted by _______.
what does the CD vs. reynolds number for nozzle chokes look like
