Fluid flow in a skewed annulus
Journal Article
·
· Journal of Energy Resources Technology
- Institut Francais du Petrole, Rueil-Malmaison (France)
A novel, realistic treatment of annular flow in an oil well is developed. The fluid flow in an annulus with an inclined or S-shaped inner pipe is considered. The model covers laminar and turbulent flow regimes and the results are experimentally verified. The study predicts axial and angular velocities and frictional pressure losses. The frictional pressure losses are shown to be higher than in the corresponding concentric annulus when the inner pipe is severely S-shaped. However, for typical drilling well geometries, the frictional pressure losses are found to approach the eccentric annular predictions asymptotically. Thus, the study finds the average eccentricity of a vertical or near vertical well, which is a difficult parameter for the engineer to estimate. The results of the study are of practical importance where high annular frictional pressure losses are encountered, such as in slim holes and coiled tubing operations. The frictional pressure losses in complex annular geometries are presented in an easily usable form.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 253688
- Journal Information:
- Journal of Energy Resources Technology, Journal Name: Journal of Energy Resources Technology Journal Issue: 2 Vol. 118; ISSN 0195-0738; ISSN JERTD2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fluid flow in a skewed annulus
Non-Newtonian flow in eccentric annuli
Laminar flow of non-newtonian fluids in an eccentric annulus
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:93035
Non-Newtonian flow in eccentric annuli
Journal Article
·
Sat Sep 01 00:00:00 EDT 1990
· Journal of Energy Resources Technology; (USA)
·
OSTI ID:5888484
Laminar flow of non-newtonian fluids in an eccentric annulus
Journal Article
·
Thu May 01 00:00:00 EDT 1975
· J. Eng. Ind.; (United States)
·
OSTI ID:6776096