Wellbore and formation temperature equation and its solution.
Calculation of bottom hole pressure after temperature change
caused by thermal production: When steam is injected, temperature affects pressure. Since
the temperature influences the viscosity of the liquid in formation seepage, but temperature
has no effect on flow velocity (or has little effect), therefore, the seepage equation of
formation remains unchanged, but wellbore pressure needs to be modified.
Shut-in pressure drop well testing interpretation
Consider the effect of temperature on
shut-in pressure: Because the steam parameters vary greatly with temperature during shut in,
the viscosity, compression coefficient and volume coefficient of steam and so on vary with
temperature should be considered.
The multi-region composite model is used
to represent the approximate range of temperature spread.
fracture well and so on can be analyzed.Dual medium reservoir can be considered.Various boundary effects can be