Analysis of gas holdup in bubble columns with non-Newtonian fluid using electrical resistance tomography and dynamic gas disengagement technique

2005 ◽  
Vol 60 (22) ◽  
pp. 6118-6123 ◽  
Author(s):  
E. Fransolet ◽  
M. Crine ◽  
P. Marchot ◽  
D. Toye
Keyword(s):  
Newtonian Fluid ◽  
Electrical Resistance ◽  
Gas Holdup ◽  
Bubble Columns ◽  
Electrical Resistance Tomography

Investigation of Flowzan as Non-Newtonian Cutting Transport Fluid in Directional Drilling Applications via Electrical Resistance Tomography Method

2021 ◽  
Author(s):  
Muhammad Saad Khan ◽  
Abinash Barooh ◽  
Mohammad Azizur Rahman ◽  
Ibrahim Hassan ◽  
Rashid Hasan
Keyword(s):  
Newtonian Fluid ◽  
Electrical Resistance ◽  
Volume Fraction ◽  
Drill Pipe ◽  
Measurement Technology ◽  
Outer Diameter ◽  
Directional Drilling ◽  
Electrical Resistance Tomography ◽  
Vertical Orientation

Abstract In-situ cutting transport measurement is essential to understand the hydrodynamics and operational parameters required for efficient annulus cleaning. Electrical resistance tomography (ERT) has been a promising method in many industrial applications. This study aimed to provide comprehensive information on the use of a non-invasive ERT method to examine the volume fraction of solids in the presence of non-Newtonian fluid (0.5 wt percent of Flowzan) in a directional drilling annulus (80–90° from vertical orientation). The experiments were performed in a horizontal flow loop system where the annulus segment was 240 (6.16 m) inch long with an inner and outer diameter of 2.5 inches (6.4 cm) and 4.5 inches (11.4 cm), respectively. The results obtained indicated that the ERT device could effectively detect the volume fraction of the solids in the presence of non-Newtonian fluid (Flowzan) under different drilling conditions. Results also showed that the annulus’ successful cleaning was observed with an increase in fluid mass flow rates indicated the relative increase in cuttings volumes (AVF = 7 to 9%). Besides, the rotation of the drill pipe often had a beneficial effect on cutting transport. Furthermore, it was observed that both (30%) eccentricity and inclination (80–85 °) cause a reduction in cutting volume fraction. Therefore, this study will provide an avenue for the industrial implementation of in situ ERT measurement technology in directional drilling operations, particularly in the case of non-Newtonian drilling fluids.

Measuring solid cuttings transport in Newtonian fluid across horizontal annulus using electrical resistance tomography (ERT)

2021 ◽  
Vol 77 ◽  
pp. 101841
Author(s):  
M. Fahed Qureshi ◽  
Moustafa H. Ali ◽  
Hicham Ferroudji ◽  
Golam Rasul ◽  
Muhammad Saad Khan ◽  
...  
Keyword(s):  
Newtonian Fluid ◽  
Electrical Resistance ◽  
Cuttings Transport ◽  
Electrical Resistance Tomography
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