scholarly journals Dvelopment of Measurement Method of Residual oil-Film on Steel Surface after Degreasing Process by Laser Induced Fluorescence

2011 ◽  
Vol 31 (6) ◽  
pp. 15
Author(s):  
Yoshihiko OISHI ◽  
Kenji FUKUI ◽  
Yoshimi KIZAKI ◽  
Kazuhiro AKIHAMA
Keyword(s):  
Measurement Method ◽  
Steel Surface ◽  
Laser Induced Fluorescence ◽  
Residual Oil ◽  
Oil Film

Detection of Residual Oil Film on Polished KDP Crystal by Atomic Force Microscope

2018 ◽  
Vol 61 (4) ◽  
pp. 618-625
Author(s):  
Lichao Guan ◽  
Jiexiong Ding ◽  
Yunpeng Zhang ◽  
Haining Li ◽  
Chao Wang ◽  
...  
Keyword(s):  
Atomic Force Microscope ◽  
Residual Oil ◽  
Kdp Crystal ◽  
Oil Film ◽  
Atomic Force

The Research of the Dynamic Model of Oil Film in Pores

2013 ◽  
Vol 448-453 ◽  
pp. 3046-3049
Author(s):  
Run Tong Wu ◽  
Kao Ping Song ◽  
Er Long Yang
Keyword(s):  
Film Thickness ◽  
Oil Recovery ◽  
Polymer Flooding ◽  
Total Output ◽  
Residual Oil ◽  
Dynamics Model ◽  
Oil Film ◽  
Macroeconomic Conditions ◽  
Theoretical Significance ◽  
Tertiary Oil Recovery

As a mature tertiary oil recovery technology, polymer flooding has been widely used in domestic oilfields, especially in Daqing oilfield, its polymer flooding production has reached more than 25% of total output. Therefore, there are important theoretical significance and application value to do further research of polymer flooding mechanism and use to guide the production. In order to understand the mechanism of polymer flooding, polymer flooding oil film based on the decrease of residual oil range is the biggest, established the dynamics model of polymer solution displacement of rock wall oil film under the condition of tensile and shear flow. In addition, this paper discussed the effect of the oil film thickness, tensile index, dimensionless tensile coefficient as well as the power-law coefficient on oil film start, and pointed out macroeconomic conditions which is the oil film start required.

An ultrasonic measurement method for full range of oil film thickness

2018 ◽  
Vol 233 (3) ◽  
pp. 481-489 ◽  
Author(s):  
Kai Zhang ◽  
Pan Dou ◽  
Tonghai Wu ◽  
Kai Feng ◽  
Youquan Zhu
Keyword(s):  
Reflection Coefficient ◽  
Film Thickness ◽  
Measurement Method ◽  
Ultrasonic Method ◽  
Dead Zone ◽  
Full Range ◽  
Thickness Measurement ◽  
Ultrasonic Measurement ◽  
Center Frequency ◽  
Oil Film

Ultrasonic method is quite promising for oil film thickness measurement in industry, while there is normally a dead zone for one ultrasonic sensor with a special center frequency when measuring the oil film thickness by the traditional reflection coefficient amplitude. In this paper, an ultrasonic measurement method for full range of oil film thickness was investigated. The theoretical relationship between the oil film thickness and the reflection coefficient phase was firstly built up and the reflection coefficient phase was found to be able to measure the oil film thickness in the dead zone. Then the reflection coefficient amplitude and phase were combined to measure the oil film thickness in the full range. A high-precision calibrated rig, which could form a series of known film thicknesses oil layers, was set up and the performance of this method was shown to work well. This method is significant for online oil film thickness monitoring in industry.

Microscopic Mechanism of Salt-Bearing Polymer Flooding

2014 ◽  
Vol 556-562 ◽  
pp. 416-420
Author(s):  
Ling Hui Sun ◽  
Ji Hong Li ◽  
Chun Liu Sun ◽  
Yun Long Zhang ◽  
Zhi Qing Li
Keyword(s):  
Experimental Study ◽  
Normal Stress ◽  
Polymer Flooding ◽  
Residual Oil ◽  
Microscopic Mechanism ◽  
Oil Migration ◽  
Oil Film ◽  
Microscopic Models ◽  
Micro Flow

In order to study the mechanism of salt-bearing polymer flooding, using micro-flow technology, experimental study of salt-bearing polymer flooding residual oil process was carried outin two microscopic models of hydrophilic and lipophilic formation.Its microscopic percolation mechanism wasinspected. In hydrophilic model, after injecting salt-bearing polymer residual oil is capturedand migrated, and there is residual oil drawinganddeformation phenomena which is consistent with common polymer; while flooding process due to larger viscoelasticity of salt-bearing polymer, normal stress is generated in the flow, so the cutting action of the residual oil is obvious. In lipophilic model, after injecting salt-bearing polymer, residual oil migration, the film gathering,interface transport, a bridge and drawing phenomenon happened which is consistent with common polymer; polymer difference between salt-bearing polymer andcommon polymeris that from the ordinary and the residual oil film formed by common polymer is flexible and easier to form "emulsion.

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