scholarly journals Evaluating the Effect of Oil-Displacing Agents Using Computer Graphics and Visualization Glass Plate Model Experiments

2021 ◽  
Vol 8 ◽  
Author(s):  
Xiangyu Sun ◽  
Jijiang Ge ◽  
Shang Ren ◽  
An Zhao
Keyword(s):  
Computer Graphics ◽  
Calculation Method ◽  
Glass Plate ◽  
Visual Image ◽  
Experimental Results ◽  
Recovery Factor ◽  
Oil Displacement ◽  
Injection Methods ◽  
Visualization Experiments ◽  
Displacement Processes

The results of visualization experiments primarily provide descriptions of local features or a general conclusion because, to obtain accurate numerical results, it is necessary to count each small point in the visual image and calculate the remaining oil based on the color. There is currently no method that can automatically and accurately calculate the recovery factor based on a visualized image. Computer graphics can be used to solve this problem, and Matlab software with its powerful image calculation functions was used to analyze and calculate images of visualization experiment processes. This article first summarizes the development and respective characteristics of the visual experiment evaluation of oil displacement agents. Then, the corresponding relationship between the actual oil displacement recovery parameters and the image parameters is introduced in detail, and a calculation formula for the visual image recovery factor is summarized. Finally, using the quantitative visual experimental results from different oil displacement agent injection methods as an example, we compared the different oil displacement processes and their recovery. The different characteristics of the two injection methods were evaluated, and the feasibility of the calculation method was verified. This method provides data support for interpreting visual experimental processes and a description of the experimental results. This provides a clear and unified calculation method for the recovery factors of oil displacement processes, which often involve many difficult-to-compare processes.

Optimization of a Specimen Size for the Determination of the Diffusible Hydrogen Content in Metals

2014 ◽  
Vol 698 ◽  
pp. 466-471
Author(s):  
Oleg V. Panchenko ◽  
Alexey M. Levchenko ◽  
Victor A. Karkhin
Keyword(s):  
Hydrogen Content ◽  
Calculation Method ◽  
Specimen Size ◽  
Experimental Results ◽  
Diffusible Hydrogen ◽  
Measuring Methods ◽  
Deposited Metal ◽  
Calculation Results

Specimens of various sizes are used to determine hydrogen content in deposited metals in such standards as ISO 3690, AWS A 4.3, and GOST 23338 while measuring methods are the same. It causes problems in comparison of experimental results and brings up the following question: what kind of specimen size is optimal to determine hydrogen content? An optimal specimen size was estimated using a calculation method. Experimental and calculation results obtained by using specimens with estimated dimensions were compared to the results obtained by using the specimen with dimensions of 100*25*8 mm to determine hydrogen content in a deposited metal.

scholarly journals The determination of the critical parameters of a gasoline petroleum fractionSB-180 Trinity-Anastasievskoe oil

2019 ◽  
Vol 135 ◽  
pp. 01106
Author(s):  
Mikhail Chebotarev ◽  
Pavel Kharchenko
Keyword(s):  
Critical Point ◽  
Calculation Method ◽  
The State ◽  
Experimental Results ◽  
Critical Parameters ◽  
Calculation Error ◽  
Thermodynamic Similarity ◽  
Density Calculation ◽  
Oil Fraction

The article determines the critical parameters of the oil fraction-temperature, pressure and density. The experimental results are compared with the calculated results, the calculation method closest to the experimental results is chosen, the calculation error is estimated. The main results and conclusions are presented. The use of the theory of thermodynamic similarity in the method of density calculation and DNP required first of all knowledge of the parameters of the state at the critical point. The accuracy of the calculation of critical parameters affects the reliability of the results.

Image Space Coordinates Extraction Algorithm Based on the Perspective Projection Transformation Matrix

2014 ◽  
Vol 644-650 ◽  
pp. 4368-4371
Author(s):  
Bao Long Zhang ◽  
Ji Chao Yang ◽  
Hong Rui Lee
Keyword(s):  
Computer Graphics ◽  
Calculation Method ◽  
Matrix Theory ◽  
Transformation Matrix ◽  
Image Space ◽  
Image Point ◽  
Perspective Projection ◽  
3D Graphics ◽  
Extraction Algorithm ◽  
Projection Transformation

The paper analyses the 3D graphics transformation in computer graphics and its displays process. The method of graphics transformation is introduced. The analysis focuses on the perspective projection transformation matrix theory and its derivation. The calculation method of image space coordinates in the image point coordinates systems is introduced.

The Effect of Following Water after Polymer Flooding on the Displacement Efficiency with Alternately Injecting Slug of Gel and Polymer/Surfactant

2013 ◽  
Vol 734-737 ◽  
pp. 1290-1293 ◽  
Author(s):  
Ji Hong Zhang ◽  
Yu Wang ◽  
Xi Ling Chen ◽  
Zi Wei Qu ◽  
Dong Ke Qin
Keyword(s):  
Polymer Flooding ◽  
Experimental Results ◽  
Compound System ◽  
Residual Oil ◽  
Displacement Efficiency ◽  
Flat Panel ◽  
Oil Displacement ◽  
Panel Model ◽  
Displacement Experiments ◽  
Polymer Surfactant

Aiming at the development of remaining oil after polymer flooding, the author develops an oil displacement technology, alternately injecting the slug of the gel and polymer/surfactant compound system, which can advanced improve the remained oil after polymer flooding. By using the artificial large flat-panel model, the oil displacement experiments are carried on to study the injection characteristics and the displacement efficiency of the alternately injecting the slug of gel and polymer/surfactant compound system, and whether the following water should be injected after polymer flooding has been discussed. The experimental results show that, the recovery of alternately injecting the gel and polymer/surfactant slug after polymer flooding could enhance recovery more than 10% on the basis of polymer flooding, the following water after polymer flooding has a little impact on the final recovery but increasing time and the difficulty of development. Therefore, these results provide the technology that alternately injecting the slug of the gel and polymer/surfactant could advance develop the residual oil and enhance the recovery after polymer flooding.

418 Practical use of fast calculation method of radiation using computer graphics technique

2005 ◽  
Vol 2005.15 (0) ◽  
pp. 390-393
Author(s):  
Takashi UENAKA ◽  
Kaoru IKEJIMA ◽  
Kenji SHIOTANI ◽  
Akikazu KAGA ◽  
Akira KONDO
Keyword(s):  
Computer Graphics ◽  
Calculation Method ◽  
Fast Calculation

Study on Influence of Injection Method on the Effect of Oil Displacement of Nanometer Microspheres

2013 ◽  
Vol 734-737 ◽  
pp. 1272-1275
Author(s):  
Ji Hong Zhang ◽  
Zhi Ming Zhang ◽  
Xi Ling Chen ◽  
Qing Bin He ◽  
Jin Feng Li
Keyword(s):  
Oil Recovery ◽  
Experimental Result ◽  
Displacement Efficiency ◽  
Oil Displacement ◽  
Profile Control ◽  
Oil Displacement Efficiency ◽  
Injection Methods ◽  
The One ◽  
Deep Profile ◽  
Enhance Oil Recovery

Nanometer microspheres injection is a new deep profile control technology. Nanometer microspheres could inflate with water, resulting in plugging step by step in reservoirs, which could improve the swept efficiency in the reservoir and enhance oil recovery. By using non-homogeneous rectangular core, oil displacement efficiency experiment was conducted for studying the influence of different injection methods on the effect of injection nanometer microspheres. The experimental result shows that, compared with development effect of single-slug injection or triple-slug injection, the one of double-slug injection is better. Nanometer microspheres can enhance oil recovery significantly in medium and low permeability reservoir.

A Fast Calculation Method for View-Dependent per-Pixel Lighting

2011 ◽  
Vol 403-408 ◽  
pp. 1631-1635
Author(s):  
Hua Rui Wu ◽  
Rong Hua Gao ◽  
Chun Jiang Zhao
Keyword(s):  
Light Source ◽  
Computational Efficiency ◽  
Calculation Method ◽  
Specular Reflection ◽  
Experimental Results ◽  
Fast Calculation ◽  
Pixel Brightness

Per-Pixel lighting can greatly improve the computational efficiency because of the model has been completed the hidden and visibility judge processing. However, each pixel brightness values need to recalculate when the viewpoint changes. And per-pixel lighting will still be constrained computational efficiency in the case of greater pixel number. In this paper, a fast calculation method for view-dependent per-pixel lighting under a fixed light source is proposed, and a symmetric relationship between pixel brightness value and specular reflection was given. Finally, the brightness under the current viewpoint can calculate fastly. Experimental results show that this method has an efficient lighting calculation than the method of per-pixel lighting and hardware-accelerated lighting calculation.

Simulation and Testing on Performance of the Woven Brush Seal in Vacuum Environment

2016 ◽  
Author(s):  
Farong Du ◽  
Zheng Xu ◽  
Fenzhu Ji ◽  
Yu Zhou
Keyword(s):  
Porous Medium ◽  
Boundary Conditions ◽  
Finite Volume ◽  
Calculation Method ◽  
Rotational Speed ◽  
Labyrinth Seal ◽  
Experimental Results ◽  
Actual Situation ◽  
Brush Seal

The liquid lubrication is one of the most common lubrication modes in long-term space equipment, the sealing for liquid lubricants is thus important. Woven brush seal is motived by contact, which is able to achieve zero gap and thus have better performance than others. In this paper, we propose a woven brush seal system based on the model of porous medium with deformation of woven brush wire in anisotropic. For estimating the leakage and verifying availability of our system, we build calculation models by employing finite volume k-epsilon model and SIMPSON calculation method. Additionally, we run both simulation and experiments to evaluate our system, the calculation and experimental results show that: the leakage is much lower than traditional labyrinth seal, the amount of leakage increases gradually with the increase of rotational speed. The calculation method and boundary conditions are consistent with the actual situation. Namely, woven brush is able to satisfy the requirements in vacuum environment and thus considered as the corresponding seal component.

scholarly journals The Effect of Inlet Air Vitiation on Combustion Efficiency

1985 ◽  
Author(s):  
Fan Zuomin ◽  
Jiang Yijun
Keyword(s):  
Test Data ◽  
Calculation Method ◽  
Combustion Efficiency ◽  
Empirical Correlation ◽  
Experimental Results ◽  
Ramjet Combustor ◽  
Stirred Reactor ◽  
Good Agreement

Experimental results of the effect of inlet air vitiation produced by a vitiating preheater on combustion efficiency of a turbojet combustor and a model ramjet combustor are presented in this paper. An empirical correlation and a calculation method based on stirred reactor theory are derived to correct the vitiation effect. Results obtained by means of these two methods are in good agreement with test data.

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