Influence of drag-reducing polymer on flow patterns, drag reduction and slip velocity ratio of oil–water flow in horizontal pipe

2015 ◽  
Vol 73 ◽  
pp. 1-10 ◽  
Author(s):  
A. Abubakar ◽  
T. Al-Wahaibi ◽  
A.R. Al-Hashmi ◽  
Y. Al-Wahaibi ◽  
A. Al-Ajmi ◽  
...  
Keyword(s):  
Drag Reduction ◽  
Water Flow ◽  
Slip Velocity ◽  
Velocity Ratio ◽  
Flow Patterns ◽  
Horizontal Pipe ◽  
Oil Water ◽  
Drag Reducing Polymer

Effect of Water-Soluble Drag-Reducing Polymer on Flow Patterns and Pressure Gradients of Oil/Water Flow in Horizontal and Upward-Inclined Pipes

SPE Journal ◽  
2016 ◽  
Vol 22 (01) ◽  
pp. 339-352 ◽  
Author(s):  
A.. Abubakar ◽  
Y.. Al-Wahaibi ◽  
T.. Al-Wahaibi ◽  
A.. Al-Hashmi ◽  
A.. Al-Ajmi ◽  
...  
Keyword(s):  
Water Flow ◽  
Flow Patterns ◽  
Major Effect ◽  
Water Soluble ◽  
Experimental Investigations ◽  
Pressure Gradients ◽  
Volume Fractions ◽  
Continuous Flows ◽  
Oil Water ◽  
Drag Reducing Polymer

Summary Experimental investigations of flow patterns and pressure gradients of oil/water flow with and without drag-reducing polymer (DRP) were carried out in horizontal and upward-inclined acrylic pipe of 30.6-mm inner diameter (ID). The oil/water flow conditions of 0.1- to 1.6-m/s mixture velocities and 0.05–0.9 input oil-volume fractions were used, and 2,000 ppm master solution of the water-soluble DRP was prepared and injected at controlled flow rates to provide 40 ppm of the DRP in the water phase at the test section. The flow patterns at the water-continuous flows were affected by the DRP, whereas there were no tangible effects of the DRP at the oil-continuous flow regions. The upward inclinations shifted the boundaries between stratified flows and dual continuous flows, and the boundaries between dual continuous flows and water-continuous flows to lower mixture velocities. This means that the inclinations increased the rate of dispersions. The frictional pressure gradients for both with and without DRP slightly decreased with inclinations especially at low mixture velocities, whereas the significant increases in the total pressure gradients with the inclinations were more pronounced at low mixture velocities. The inclinations did not have a major effect on the drag reductions by the DRP at the high mixture velocities and low-input oil-volume fractions where the highest drag reductions recorded were 64% at 0° inclination and 62% at both + 5° and +10° inclinations. However, the inclinations increased the drag reductions as the input oil-volume fractions were increased before phase-inversion points.

Prediction of oil-water flow patterns, radial distribution of volume fraction, pressure and velocity during separated flows in horizontal pipe

2016 ◽  
Vol 28 (4) ◽  
pp. 658-668 ◽  
Author(s):  
Anand B. Desamala ◽  
Vinayak Vijayan ◽  
Anjali Dasari ◽  
Ashok Kumar Dasmahapatra ◽  
Tapas K. Mandal
Keyword(s):  
Water Flow ◽  
Radial Distribution ◽  
Volume Fraction ◽  
Flow Patterns ◽  
Separated Flows ◽  
Horizontal Pipe ◽  
Oil Water

Modality transition-based network from multivariate time series for characterizing horizontal oil–water flow patterns

2015 ◽  
Vol 26 (03) ◽  
pp. 1550034 ◽  
Author(s):  
Mei-Shuang Ding ◽  
Ning-De Jin ◽  
Zhong-Ke Gao
Keyword(s):  
Water Flow ◽  
Flow Behavior ◽  
Multivariate Time Series ◽  
Flow Patterns ◽  
Industrial Processes ◽  
Flow Conditions ◽  
Dynamic Flow ◽  
Horizontal Pipe ◽  
Oil Water ◽  
Multivariate Signals

The simultaneous flow of oil and water through a horizontal pipe is a common occurrence during petroleum industrial processes. Characterizing the flow behavior underlying horizontal oil–water flows is a challenging problem of significant importance. In order to solve this problem, we carry out experiment to measure multivariate signals from different flow patterns and then propose a novel modality transition-based network to analyze the multivariate signals. The results suggest that the local betweenness centrality and weighted shortest path of the constructed network can characterize the transitions of flow conditions and further allow quantitatively distinguishing and uncovering the dynamic flow behavior underlying different horizontal oil–water flow patterns.

Energy analysis of oil-water flow with drag-reducing polymer in different pipe inclinations and diameters

2017 ◽  
Vol 149 ◽  
pp. 315-321 ◽  
Author(s):  
T. Al-Wahaibi ◽  
A. Abubakar ◽  
A.R. Al-Hashmi ◽  
Y. Al-Wahaibi ◽  
A. Al-Ajmi
Keyword(s):  
Water Flow ◽  
Energy Analysis ◽  
Oil Water ◽  
Drag Reducing Polymer
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