Impact of Charge Type Used in Perforation on the Outcome of Matrix Acid Treatment in Carbonate Formations: Comparative Study

2013 ◽  
Author(s):  
Ahmed I. Rabie ◽  
Hisham A. Nasr El-Din ◽  
John T. Hardesty ◽  
Nathan G. Clark ◽  
Matthew R. G. Bell
Keyword(s):  
Comparative Study ◽  
Acid Treatment ◽  
Carbonate Formations

Comparative study of the ball milling and acid treatment of functionalized nanodiamond composites

2018 ◽  
Vol 73 ◽  
pp. 46-52 ◽  
Author(s):  
Muhammad Khan ◽  
Li Tiehu ◽  
Ting Kai Zhao ◽  
A.A. Khurram ◽  
Imran Khan ◽  
...  
Keyword(s):  
Comparative Study ◽  
Ball Milling ◽  
Acid Treatment

scholarly journals A Comparative Study of Recycling of Used Engine Oil Using Extraction by Composite Solvent, Single Solvent, and Acid Treatment Methods

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Rashid Abro ◽  
Xiaochun Chen ◽  
Khanji Harijan ◽  
Zulifqar A. Dhakan ◽  
Muhammad Ammar
Keyword(s):  
Specific Gravity ◽  
Comparative Study ◽  
Pour Point ◽  
Acid Treatment ◽  
Research Effort ◽  
Flash Point ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Treatment Methods ◽  
Engine Oils

Engine oils are made from crude oil and its derivatives by mixing of certain other chemicals (additives) for improving their certain properties. Lubricating oil is used to lubricate moving parts of engine, reducing friction, protecting against wear, and removing contaminants from the engine, act as a cleaning agent, and act as an anticorrosion and cooling agent. This research effort focuses on comparative study of re-refined engine oils by extraction of composite solvent, single solvent, and acid treatment methods. Composite solvent was made up of butanol-propane and butanone; propane was used as single solvent. Different properties of refined oil and waste oil were analyzed, such as cloud and pour point, flash point, specific gravity, ash content, viscosity, moisture ratio and acid value. On the basis of experimental work, it was found that the iron contamination decreased from 50 ppm to 13 ppm for composite solvent; for propane solvent it decreased up to 30 ppm and 15 ppm for acid treatment. Results from the flash point, pour point, viscosity, specific gravity, and ash percentage were improved at different degrees, but the best results were seen by using the composite solvent with having drawback of expensiveness.

A comparative study of surface modification in carbonized rice husk by acid treatment

2012 ◽  
Vol 45 (1-3) ◽  
pp. 170-176 ◽  
Author(s):  
Mathilakhath Sindhu ◽  
Kadhar Mohamed Meera Sheriffa Begum ◽  
Sivaraju Sugashini
Keyword(s):  
Surface Modification ◽  
Comparative Study ◽  
Rice Husk ◽  
Acid Treatment

scholarly journals Effectiveness of acidizing geothermal wells in the South German Molasse Basin

2013 ◽  
Vol 1 (1) ◽  
pp. 1-11 ◽  
Author(s):  
S. Schumacher ◽  
R. Schulz
Keyword(s):  
Geothermal Energy ◽  
Acid Treatment ◽  
Molasse Basin ◽  
The South ◽  
Well Yield ◽  
Geothermal Wells ◽  
Carbonate Formations ◽  
Acid Treatments

<p><strong>Abstract.</strong> In Germany, many hydro-geothermal plants have been constructed in recent years, primarily in the region of Munich. As the host formation here mainly consists of carbonates, nearly all recently drilled wells have been acidized in order to improve the well yield. In this study, the effectiveness of these acid treatments is analyzed with respect to the amount of acid used and the number of acid treatments carried out per well. The results show that the first acid treatment has the largest effect, while subsequent acidizing improves the well only marginally. Data also indicate that continued acidizing can lead to degradation of the well. These findings may not only be important for geothermal installations in Germany but also for projects, for example, in Austria, France or China where geothermal energy is produced from carbonate formations as well.</p>

Author response for "Laminar distribution of cortical projection neurons to the pulvinar: A comparative study in cats and mice"

2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire
Keyword(s):  
Comparative Study ◽  
Author Response ◽  
Projection Neurons ◽  
Cortical Projection ◽  
Laminar Distribution
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