Difference between revisions of "Liquid loading"
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| − | The minimum gas velocity to remove the liquid | + | The minimum gas velocity to remove the liquid empirical correlation: |
:<math> v_g = 1.593\ \sigma^{1/4}\ \frac{({\rho_L-\rho_g})^{1/4}}{\rho_g^{1/2}}</math> | :<math> v_g = 1.593\ \sigma^{1/4}\ \frac{({\rho_L-\rho_g})^{1/4}}{\rho_g^{1/2}}</math> | ||
Revision as of 20:31, 15 March 2017
Brief
Liquid loading is a phenomenon when the gas phase does't provide sufficient transport energy to lift the liquids out of the well.
To avoid the Liquid loading the gas rate needs to be maximized.
To maximize the gas rate the wellhead flowing pressure needs to be minimized.
Math & Physics
The minimum gas velocity to remove the liquid empirical correlation:
The minimum gas rate to remove the liquid equation:
Nomenclature
= flow area, ft^2
= flowing wellhead pressure, psia
= gas rate, MMscf/d
= gas density, lbm/ft3
= liquid density, lbm/ft3
= surface tension, dyne/cm
= flowing temperature, °R
= gas velocity, ft/sec
= gas compressibility factor at flowing P & T, dimensionless
References
Turner, R. G., Hubbard, M. G., and Dukler, A. E. (1969) “Analysis and Prediction of Minimum Flow Rate for the Continuous Removal of Liquids from Gas Wells,” Journal of Petroleum Technology, Nov. 1969. pp. 1475–1482.
