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Zhang, Fan
- Impact of a Microbial-Enhanced Oil Recovery Field Trial on Microbial Communities in a Low-Temperature Heavy Oil Reservoir
Abstract Views :207 |
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Authors
Affiliations
1 The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Mechanism, Ministry of Education, School of Energy Resources, University of Geosciences (Beijing), Beijing, CN
2 College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, Hubei 434023, CN
3 School of Biomedical Sciences, Faculty of Life and Health Sciences, University of Ulster, N. Ireland, GB
1 The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Mechanism, Ministry of Education, School of Energy Resources, University of Geosciences (Beijing), Beijing, CN
2 College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, Hubei 434023, CN
3 School of Biomedical Sciences, Faculty of Life and Health Sciences, University of Ulster, N. Ireland, GB
Source
Nature Environment and Pollution Technology, Vol 14, No 3 (2015), Pagination: 455-462Abstract
In this experiment, air and nutrients were injected into a low temperature heavy oil reservoir to initiate an indigenous microbial enhanced oil recovery (MEOR) process with a cumulative increment of 1872 t heavy oil. This study reveals the response of microbial communities in the field before and during MEOR based on culture-dependent enrichment and culture-independent 16S rRNA gene clone library methods. The results showed that it was easy to activate the biosurfactant-producing bacteria Pseudomonas in laboratory conditions, and the bacteria were also the dominant present group in the mixed oil-water samples after MEOR. Fermentative and hydrocarbon-oxidizing bacteria increased by 300-500%, and the acetate ion concentration also significantly increased. Microbial activity of Pseudomonas and the metabolic products including biosurfactants were proposed to be the primary mechanisms for improving heavy oil recovery. The results of this experiment can serve as a useful resource for monitoring MEOR-related microbial population, and for future related experiments.Keywords
Microbial Communities, 16S rDNA Clone Library, Microbial Enhanced Oil, Recovery.Full Text
- Experimental Analysis of the Ratio of Similar Materials by Similarity Model Test on Raw Coal
Abstract Views :279 |
PDF Views:104
Authors
Affiliations
1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, CN
2 Applied Technical College, China University of Mining and Technology, Xuzhou, Jiangsu 221008, CN
3 State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, CN
1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, CN
2 Applied Technical College, China University of Mining and Technology, Xuzhou, Jiangsu 221008, CN
3 State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, CN
Source
Current Science, Vol 113, No 11 (2017), Pagination: 2174-2179Abstract
Similarity model test is an effective approach to study the mechanism of hydraulic fracture propagation in coalbed methane reservoirs as well as theoretical analysis and numerical simulation. The efficiency of the similarity model test result is closely related to the selection and ratio of similar materials. Similar material ratio test was conducted to simulate the mechanical parameters of raw coal using orthogonal method and an appropriate similarity model for hydraulic fracturing experiment was developed in this study. Results show that it is suitable to select cement, gypsum as binder and apply pulverized coal as aggregate through the analysis of experimental data. The mechanical parameters of similar materials, including uniaxial compressive strength, elastic modulus, Poisson ratio and firmness coefficient are tested using laboratory tests. The impact of diverse ratios of similar materials on the mechanical parameters is analysed. A proper ratio is selected to make the mechanical parameters of raw coal close to the ones of similar material, in order to meet the demand of the similarity model test based on raw coal. The results can provide theoretical basis and technical support for the selection of similar materials to carry out hydraulic fracturing experiments.Keywords
Experimental Investigation, Hydraulic Fracturing, Raw Coal, Similar Materials, Mechanical Parameters.Full Text
References
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- Huiying, T., Winterfeld Philip, H., Yushu, W., Zhaoqin, H., Yuan, D., Zhengfu, P. and Juncheng, Z., Integrated simulation of multistage hydraulic fracturing in unconventional reservoirs. J. Nat. Gas Sci. Eng., 2016, 36, 875–892.
- Xiao, L., Haixiao, L. and Fan, Z., Study on ratio of similar materials based on coal mass strength. Comput. Modell. New Technol., 2014, 18(12), 336–340.
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- Analytical Model And Numerical Simulation On Pipeline Evacuation Of Offshore Oil Transportation System
Abstract Views :88 |
PDF Views:0
Authors
. Chang Chen
1,
Jikun Guo
1,
Shifu Zhang
1,
Qixin Zhang
1,
Fan Zhang
1,
Jianting Zhou
2,
Ligang Zou
3
Affiliations
1 Army Logistics University of PLA, Chong Qing, 401311., CN
2 Air Force Research Institute, Beijing 100076., CN
3 Weihai Yihe Specialty Equipment Mfg. Co. Ltd., Shandong., CN
1 Army Logistics University of PLA, Chong Qing, 401311., CN
2 Air Force Research Institute, Beijing 100076., CN
3 Weihai Yihe Specialty Equipment Mfg. Co. Ltd., Shandong., CN
Source
Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 64-68Abstract
This paper focus on the pipeline evacuation of offshore oil transportation system. The mathematical model for pipeline evacuation was established, and the total emptying time under different working pressure was calculated by using MATLAB software. Frictional resistance and velocity distribution of the pipe under different time intervals was analyzed. The numerical simulation for the pipeline evacuation was carried out by using ANSYS software. The pressure distribution, velocity distribution and distribution law of the fluid trajectory are calculated and discussed, which can provide references for the analysis and control of the variation of the pipeline during the evacuation operationKeywords
Offshore oil transportation system; pipeline evacuation; numerical simulation; nnalytical model.
References
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- Jiang Jun-Ze, Zhang Wei-Ming, Yong Qi-Wei, Ming, J. (2017). Analysis of the Influencing Factors and Mechanism of Gas Draining Rate of Mobile Pipeline. ACTA Armamentarii, 38(3): 585-592.
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- Characteristics of Hydraulic Fracture Surface Based on 3d Scanning Technology
Abstract Views :91 |
PDF Views:0
Authors
Affiliations
1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454 003., CN
2 State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400 044, CN
3 Applied Technical College, China University of Mining and Technology, Xuzhou, Jiangsu 221 008,, CN
1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454 003., CN
2 State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400 044, CN
3 Applied Technical College, China University of Mining and Technology, Xuzhou, Jiangsu 221 008,, CN
Source
Journal of Mines, Metals and Fuels, Vol 66, No 4 (2018), Pagination: 227-230Abstract
The surface characteristics of fractured specimens are important in hydraulic fracturing laboratory experiments. In this paper we present a three-dimensional (3D) scanning device assembled to study these surface characteristics. Cube-shaped coal rock specimens were produced in the laboratory and subjected to triaxial loading until the specimen split in two in a hydraulic fracturing experiment. Each fractured specimen was placed on a rotating platform and scanned to produce 3D surface coordinates of the surface of the fractured coal specimen. The scanned data was processed to produce high-precision digital images of the fractured model, a surface contour map, and accurate values of the surface area and specimen volume. The images produced by processing the 3D scanner data provided detailed information on the morphology of the fractured surface and the mechanism of fracture propagation. High-precision 3D mapping of the fractured surfaces is essential for quantitative analysis of fractured specimens. The 3D scanning technology presented here is an important tool for the study of fracture characteristics in hydraulic fracturing experiments.Keywords
Surface characteristic; hydraulic fracturing; 3D scanning; 3D coordinates; surface area.References
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