APPLICATION OF MASS BALANCE IN PUMPING WELL ANALYSIS. Academic Article

abstract

• This study demonstrates that improper application of the mass balance equation (MBE) may lead to serious errors in estimating the annular gas rate and the flowing BHP. The inaccuracy stems from lack of knowledge of the true annular gas rate when the MBE is applies to the total gas in the system (tubing and annulus). Because only a fraction of the total gas is produced through the annulus, and actual annular gas rate is not known beforehand unless measured at the surface. The method suggested in this work develops the MBE for the gas phase in the annulus only, thereby avoiding the problem. The flowing BHP can be estimated by conducting a short buildup test and extrapolating the buildup data to zero time.

authors

• Hasan, Abu Rashid

published proceedings

• JPT, Journal of Petroleum Technology

author list (cited authors)

• Kabir, C. S., & Hasan, A. R.

complete list of authors

• Kabir, CS||Hasan, AR

publication date

• January 1982

published in

• JPT, Journal of Petroleum Technology  Journal

start page

• 1002

end page

• 1010

volume

• 34

issue

• 5