The volume expansion effect of amine during CO2 adsorption process: An experimental study combined with theoretical calculations

2020 ◽  
Vol 572 ◽  
pp. 190-197 ◽  
Author(s):  
Yi Chen ◽  
Huili Yuan ◽  
Haian Xia ◽  
Wei Jiang ◽  
Can Yang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Volume Expansion ◽  
Adsorption Process ◽  
Co2 Adsorption ◽  
Theoretical Calculations ◽  
Expansion Effect

scholarly journals Experimental Study on the Local Drag of Completion String with Packers in Horizontal Wells

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 657 ◽  
Author(s):  
Qimin Liang ◽  
Bairu Xia ◽  
Baolin Liu ◽  
Zhen Nie ◽  
Baokui Gao
Keyword(s):  
Experimental Study ◽  
Oil And Gas ◽  
Theoretical Calculations ◽  
Horizontal Wells ◽  
Experimental Results ◽  
Economic Losses ◽  
Horizontal Section ◽  
Friction Coefficients ◽  
Oil And Gas Fields ◽  
Gas Fields

The multistage stimulation technology of horizontal wells has brought huge benefits to the development of oil and gas fields. However, the completion string with packers often encounters stuck due to the large drag in the horizontal section, causing huge economic losses. The local drag of the completion string with packers in the horizontal section is very complicated, and it has not been fully understood by theoretical calculations. A local drag experiment is designed to simulate the influence of microsteps and cuttings on the local drag of the completion string with packers in the inclined and horizontal sections. An obvious increase of the local drag of the packer is found at microsteps of the horizontal section, and the local drag is greatly affected by the amount of sand. In addition, the string with packers will vibrate during the tripping process in the deviated section, and the local drag is different when different amounts of sand are in the hole, but the change law is similar. The experimental results show that the friction coefficients of the packers with different materials in the horizontal section vary greatly, resulting in different local drags. It indicates that the local drag of the completion string not only depends on the microsteps and sand quantity in the wellbore, but also on the material difference of the packers. Only if microsteps and cuttings are removed can the completion string be tripped into horizontal wells smoothly.

scholarly journals Hemodynamics changes induced by volume expansion measured by PiCCO® system: the post-expansion effect

Critical Care ◽  
2001 ◽  
Vol 5 (Suppl 1) ◽  
pp. P154
Author(s):  
P Cougot ◽  
O Puyoo ◽  
O Anglès ◽  
B Georges ◽  
JF Decun ◽  
...  
Keyword(s):  
Volume Expansion ◽  
Expansion Effect

Adsorption of anti-inflammatory nimesulide by graphene materials: a combined theoretical and experimental study

2017 ◽  
Vol 19 (33) ◽  
pp. 22099-22110 ◽  
Author(s):  
I. M. Jauris ◽  
C. F. Matos ◽  
A. J. G. Zarbin ◽  
C. S. Umpierres ◽  
C. Saucier ◽  
...  
Keyword(s):  
Experimental Study ◽  
Ab Initio ◽  
Adsorption Process ◽  
Batch Adsorption ◽  
Anti Inflammatory ◽  
Graphene Material

Interactions of anti-inflammatory nimesulide with different graphene material species were explored employing both ab initio calculations and a batch adsorption process.

scholarly journals Период капельного квазибесселева пучка, генерируемого аксиконом со скругленной вершиной

2021 ◽  
Vol 47 (20) ◽  
pp. 48
Author(s):  
В.Ю. Мыльников ◽  
Д.В. Чистяков ◽  
С.Х. Абдулразак ◽  
Н.Г. Дерягин ◽  
Ю.М. Задиранов ◽  
...  
Keyword(s):  
Experimental Study ◽  
Intensity Distribution ◽  
Theoretical Calculations ◽  
Bessel Beam ◽  
3D Scanning ◽  
Central Core

We demonstrate the experimental study of the axial intensity distribution of a quasi-Bessel beam with a droplet structure of the central core, formed by an axicon with the round-tip, and the results of the theoretical calculations. We show that the period of ‘droplet’ quasi-Bessel beam is determined by the shape of the surface rounding and the angle at the top of the axicon lens and depends on the distance to it. The analysis of this dependence makes it possible to restore the shape of the round-tip of the axicon without 3D scanning.

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