Image processing techniques in foam characterization

Ozbayoglu, E. M.
Akın, Serhat
Eren, T.
Foam is one of the most widely used energized fluids in petroleum industry at fracturing and drilling operations. The influence of bubble size and texture on foam rheology has been observed for years. However, no mathematical description has been introduced yet. This study aims to consider the effects of bubble size and texture in determining the rheological parameters. Rheological analysis using digital image processing techniques and conventiona lmethods are compared using information acquired from a developed set-up.I t has been observed that by using digital image processing techniques, the rheological parameters of foam could be determined accurately.


Predicting Frictional Pressure Loss During Horizontal Drilling for Non-Newtonian Fluids
SORGUN, MEHMET; Ozbayoglu, M. E. (Informa UK Limited, 2011-01-01)
Accurate estimation of the frictional pressure losses for non-Newtonian drilling fluids inside annulus is quite important to determine pump rates and select mud pump systems during drilling operations. The purpose of this study is to estimate frictional pressure loss and velocity profile of non-Newtonian drilling fluids in both concentric and eccentric annuli using an Eulerian-Eulerian computational fluid dynamics (CFD) model. An extensive experimental program was performed in METU-PETE Flow Loop using two ...
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Pressure Loss at the Bit While Drilling with Foam
Ozbayoglu, E. M. (Informa UK Limited, 2009-01-01)
Foam is one of the most frequently used drilling fluids at underbalanced drilling operations. As foam flows, due to the pressure drop, a volumetric expansion is observed, which causes the foam quality to increase in the same direction with flow. Flow of foams through circular pipes and annular geometries are well studied. Interestingly, although one of the major sources of pressure drop is at the bit, there have been few studies of this subject for foams. Many drilling parameters including hole cleaning cap...
Computational Fluid Dynamics Modeling of Pipe Eccentricity Effect on Flow Characteristics of Newtonian and Non-Newtonian Fluids
SORGUN, MEHMET (Informa UK Limited, 2011-01-01)
The prediction of accurate drilling fluids behavior inside an annulus is especially important in drilling engineering during hydraulic program design. The flow characteristics of Newtonian and non-Newtonian fluids drastically change in the annuli when the inner pipe is eccentric. In this study, the fluid flow inside concentric, partially eccentric, and fully eccentric annuli are modeled using computational fluid dynamics. Computational fluid dynamics simulations are performed to investigate the effect of pi...
Citation Formats
E. M. Ozbayoglu, S. Akın, and T. Eren, “Image processing techniques in foam characterization,” ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, pp. 1175–1185, 2007, Accessed: 00, 2020. [Online]. Available: