Effects of Microbial Degradation over Heavy Oil and Oilfield Test

Abstract:

Heavy oils are abundant in resins and asphaltenes, and they have the characters of high freezing point, low flowing ability, difficult oil recovery and high recovery cost. Microbial degradation can effectively improve the properties of heavy oils and enhance oil recovery ratio. According to distinctive properties of heavy oils from different oilfields, identical microbial assemblies are sifted and incubated. Then the assemblies are used to degrade the heavy oils in oilfield. The results indicated that microbes selected could degrade resins and asphaltenes in heavy oils. Oilfield tests in Qinghai and Xinjiang Oilfield proved that microbial degradation is evident in enhancing recovery ration and is feasible and economical in heavy oil exploitation.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 49-55
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.49
• Online since: May 2012
• Authors: Zhao Yong Jiang, Ting Shan Zhang, Xiao Hui Chen, Guang Zhi Lan
• Keywords: Field Test, Heavy Oil, Microbial Assembly, Microbial Degradation

References

[1] Beckman J W. Action of bacteria on mineral oil[J]. Ind. Eng. Chem. News (Ed.4), 1926, 10(3): 3-10.

[2] Cui Bo, Shi Wenping, Dai Shugao, et al. Present Situation and Research Progress of Exploiting Methods for Highly Viscous Oil. Techno-economics In Petrochemicals, 2000, 16(6): 5-10.

[3] Ren Mingzhong, Zhang Tingshan, Lang Guangzhi, et al. Application of Microbial Method for Improving Oil Production to Qinghai Oil Field. Journal of Southwest Petroleum Institute, 2002, 24(3): 39-42.

[4] Zhang Tingshan, Lan Guangzhi, Deng LI, et al. Experiments On Heavy Oil Degradation and Enhancing Oil Recovery by Microbial Treatments. Acta Petrolei Sinica, 2001, 22(1): 54-57.

[5] Zhang Tingshan, Ren Mingzhong, Lan Guangzhi, et al. Microbial Degradation Influences on Heavy Oil Characters. Journal of Southwest Petroleum Institute, 2003,25(5):1-4.

[6] Lei Guang-lun, 2001. The Research And Application Of Microbial Enhanced Oil Recovery [J]. ACTA PETROLEI SINICA, 22(3):56~61 (in Chinese with English abstract).

[7] Peng Yusheng, Ji Huasheng, Liang Chunxiu, et al., 1997. Field Research of Microbial Enhanced Oil Recovery [M]. Beijing: Petroleum Industry Press, 1997: 32~33.

[8] Zhang Ting-shan, Lan Guangzhi, Deng Li, Deng Xiaogao, et al., 2001. Experiments on heavy oil degradation and enhancing oil recovery by microbial treatments[J]. ACTA PETROLEI SINICA, 22(1):54-57 (in Chinese with English abstract). 4~57.

[9] Guo Shun-ling, Li Jin-chao, Shang Hui-yun, 1990. The Technologies of Organic Geochemistry and Fluorescence Microscope [M]. Beijing: Petroleum Industry Press, 1990: 106~109.

[10] Cheng Zhong-di, 1997. The Standards for the Oil and Gas Industry in the People's Republic of China—Gas Chromatography Analytic Method for Chloroform Extractives of Rocks and Aromatics of Oil (SY/T6196—1996) [M]. Beijing: Petroleum Industry Press, 1997.

[11] Johnson, F. H , Lewin, I.. The Influence of Pressure, Temperature, and Quinine on the Rates of Grouth and Disinfection of E.Ldi in the Logarithmic Growth Phase[J]. Journal of Cellular and Comparative Physiology,1978,28：77~97.

DOI: 10.1002/jcp.1030280105

[12] Heinritz, B. .M. Gehrhardt, Baumann, F., Rogge ,G. , etc. Biomass Production By The Rmophilic Microorganisms Simultaneously Using Reaction Heat [J]. J. Chem. Tech. Biotechnol, 1990, 49：285~295.

DOI: 10.1002/jctb.280490310

[13] Trebbau, G. L , Nunez, G.J., etc. Microbial Stimulation of Lake Maracaibo Oil Wells[C]. SPE56503: 267~277.