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Gas Well Performance - Coggle Diagram
Gas Well Performance
Flow performance of production string
Geometries production string
Properties of fluid being produced
BHFP
Separator Pressure
Single Phase Gas Flow
1st Law of thermodynamic (conservation of energy)
Govern gas flow in tubing
Ignore of kinetic energy (variation of diameter is negligible)
No shart work installed. Hence, w=0
Ordinary differential equation
Temp is linear function of L through geothermal gradient
z is function of P & T
P at L not strong function of T &Z
Ability to deliver quantity of gas
IPR
BHFP
Importance to know about static (aka shut-in) /flowing Pressure
to predict productivity/ AOF of gas wells
What method to use?
Bottom-hole Pressure gauge
How to estimate FBHP & SBHP?
Wellhead Data
SG
Pressure
Temp
Formation temp
well depth
Importance of static calculation
evaluate the Pdiff equal to weight of column gas
Static BHP for slanted
basic energy balance
g=gc, dp
density of gas
total length and z are related
Pressure Losses due to friction
function of
gas properties
gas flow rate
internal pipe roughness
type of flow regime