scholarly journals Microfluidic tools for studying coalescence of crude oil droplets in produced water

2018 ◽  
Vol 191 ◽  
pp. 448-458 ◽  
Author(s):  
Marcin Dudek ◽  
Are Bertheussen ◽  
Thomas Dumaire ◽  
Gisle Øye
Keyword(s):  
Crude Oil ◽  
Produced Water ◽  
Oil Droplets

scholarly journals Induction and Coverage Times for Crude Oil Droplets Spreading on Air Bubbles

2013 ◽  
Vol 47 (24) ◽  
pp. 14154-14160 ◽  
Author(s):  
Mona Eftekhardadkhah ◽  
Gisle Øye
Keyword(s):  
Crude Oil ◽  
Air Bubbles ◽  
Oil Droplets

scholarly journals Occurrence of naphthenate deposition in crude oil production field offshore Niger Delta

2020 ◽  
Author(s):  
Opeyemi Lawal ◽  
Solomon A. Adekola ◽  
Akinsehinwa Akinlua
Keyword(s):  
Crude Oil ◽  
Metal Ions ◽  
Water Samples ◽  
Niger Delta ◽  
Produced Water ◽  
Oil Production ◽  
Acid Number ◽  
Total Acid ◽  
Offshore Field ◽  
High Possibility

AbstractCrude oil and produced water samples obtained from ten wells in an offshore field, Niger Delta, were analyzed, in order to determine the occurrence of naphthenates deposition in the field. Total acid number (TAN) and °API of the crude oil samples, pH and metal ions concentrations of the produced water samples were determined. The results revealed that TAN values ranged from 0.47 to 1.01 mgKOH/g with pH of 6.9–8.9, which were above established threshold. The metal ions concentrations especially for Ca++ and Na+ were relatively high. These imply a high possibility of metal-naphthenate precipitation in the oil production facilities in this field.

A network model for capture of emulsion droplets in porous media

2008 ◽  
Vol 48 (1) ◽  
pp. 21
Author(s):  
Changhong Gao
Keyword(s):  
Porous Media ◽  
Enhanced Oil Recovery ◽  
Network Model ◽  
Oil Recovery ◽  
Produced Water ◽  
Permeability Reduction ◽  
Oil Droplets ◽  
New Approach ◽  
Reservoir Rocks ◽  
Emulsion Droplets

Capture of emulsion droplets in porous media can be costly or beneficial. When produced water is injected into reservoir for pressure maintenance, the oil droplets in produced water can plug reservoir rocks and cause the well to lose injectivity. Enhanced oil recovery (EOR) technology takes advantage of this feature and plugs high-injectivity zones with emulsions. Previous studies reveal that interception and straining are the mechanisms of permeability decline. Established models rely on filtration data to determine key parameters. In this work, a network model is proposed to simulate capture of oil droplets in reservoir rocks and resultant permeability reduction. The model is validated with test data and reasonably good results are obtained. The simulation also reveals that the wettability of the tested porous media was altered by injection of emulsions. The new approach considers the characteristics of the porous media and incorporates the damage mechanisms, thus providing more scientific insights into the flow and capture of droplets in porous media.

A pulsed photoacoustic instrument for the detection of crude oil concentrations in produced water

1998 ◽  
Vol 69 (11) ◽  
pp. 3948-3952 ◽  
Author(s):  
S. S. Freeborn ◽  
J. Hannigan ◽  
F. Greig ◽  
R. A. Suttie ◽  
H. A. MacKenzie
Keyword(s):  
Crude Oil ◽  
Produced Water

The enhanced stability and biodegradation of dispersed crude oil droplets by Xanthan Gum as an additive of chemical dispersant

2017 ◽  
Vol 118 (1-2) ◽  
pp. 275-280 ◽  
Author(s):  
Aiqin Wang ◽  
Yiming Li ◽  
Xiaolong Yang ◽  
Mutai Bao ◽  
Hua Cheng
Keyword(s):  
Crude Oil ◽  
Xanthan Gum ◽  
Oil Droplets ◽  
Chemical Dispersant ◽  
Enhanced Stability

Pilot Study on Ultrafiltration of Produced Water from Polymer Flooding for Reuse

2010 ◽  
Vol 113-116 ◽  
pp. 1266-1269 ◽  
Author(s):  
Jun Xu ◽  
Wen Xin Shi ◽  
Shui Li Yu ◽  
Wen Ming Qu
Keyword(s):  
Crude Oil ◽  
Polyvinylidene Fluoride ◽  
Produced Water ◽  
Reduction Factor ◽  
Polymer Flooding ◽  
Transmembrane Pressure ◽  
Operation Conditions ◽  
Membrane Flux ◽  
Crossflow Velocity ◽  
Hydrolyzed Polyacrylamide

Produced water from polymer flooding (PWfPF) in oilfield is high contents of crude oil, total suspension substance (TSS), hydrolyzed polyacrylamide and salinity. Most existing traditional processes in China are incapable to treat PWfPF to meet the reinjection water quality for low and ultra-low permeability reservoirs. In the present paper, a hydrophilized tubular polyvinylidene fluoride (PVDF) membrane with a total active area of 110 m2 manufactured by our laboratory was used for ultrafiltration of the PWfPF. The temperature and volume reduction factor (VRF) of the PWfPF were fixed at 37 °C and 4, respectively. The influences of transmembrane pressure (TMP) and crossflow velocity on the membrane flux were investigated. The experimental results showed that a TMP of 0.20 MPa and crossflow velocity of 4.5 m/s were the optimum operation conditions. Under the above conditions, long-term filtration experiments were conducted for 12 months to evaluate the effectiveness of the membrane. The obtained results revealed that the membrane average flux could reach 75 L/(m2•h) and the flux recovery was more than 95%. In the permeate, the content of crude oil and turbidity were respectively lower than 1 mg/L and 1 NTU, while the TSS was consistently below detection limits (2.5 mg/L), all of which reached the highest reinjection criteria for oilfield in China and demonstrated that the membrane has a good anti-fouling characteristics to PWfPF.

Microwave-assisted ultraviolet digestion: an efficient method for the digestion of produced water from crude oil extraction and further metal determination

2017 ◽  
Vol 32 (12) ◽  
pp. 2439-2446 ◽  
Author(s):  
J. P. Souza ◽  
P. S. Barela ◽  
K. Kellermann ◽  
M. F. P. Santos ◽  
D. P. Moraes ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Crude Oil ◽  
Efficient Method ◽  
Produced Water ◽  
Oil Extraction ◽  
Icp Oes ◽  
Metal Determination ◽  
Microwave Assisted ◽  
First Time

Microwave coupled to ultraviolet radiation is proposed for the first time for produced water digestion allowing metal determination by ICP-OES.

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