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Xie J, Hu X, Liang HZ, Wang MQ, Guo FJ, Zhang SJ, Cai WC, Wang R. Cold damage from wax deposition in a shallow, low-temperature, and high-wax reservoir in Changchunling Oilfield. Sci Rep 2020; 10:14223. [PMID: 32848177 PMCID: PMC7450075 DOI: 10.1038/s41598-020-71065-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 08/10/2020] [Indexed: 11/23/2022] Open
Abstract
Wax deposition is an important factor that influences oil production for high-wax crude oilfield. There are few studies on the formation damage by wax deposition, especially cold damage to the shallow low-temperature reservoir. With laboratory tests conducted on reservoir oil and cores of Changchunling Oilfield, this study aims to experimentally investigate the influence of temperature variations on characteristics of oil–water percolation and cold damage mechanisms, as well as the relative permeability of high-wax reservoirs. Experimental results show that seepage flow of high-wax crude is significantly sensitive to temperature-wax deposition evidently increases, whereas the cold damage such as the pore-throat radius and relative permeability sharply decrease with the decline in formation temperature. The research results can be applied to enhance oil recovery of high-viscosity or high-wax oilfields.
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Affiliation(s)
- Jun Xie
- College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Xiao Hu
- College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Hui-Zhen Liang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China.
| | - Meng-Qi Wang
- School of Environment and Planning, Liaocheng University, Liaocheng, 252000, Shandong, China
| | - Fa-Jun Guo
- Research Institute of Exploration and Development of Huabei Oilfield Company, CNPC, Renqiu, 062552, Hebei, China
| | - Shu-Juan Zhang
- Research Institute of Exploration and Development of Huabei Oilfield Company, CNPC, Renqiu, 062552, Hebei, China
| | - Wu-Chao Cai
- College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Rui Wang
- College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
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Üçtuğ FG, Nijem J. Effect of polymer sulfonation on the proton conductivity and fuel cell performance of polyvinylalcohol-mordenite direct methanol fuel cell membranes. ASIA-PAC J CHEM ENG 2017. [DOI: 10.1002/apj.2105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fehmi Görkem Üçtuğ
- Faculty of Engineering and Computer Science; Izmir University of Economics; 35330 Balçova Izmir Turkey
| | - Jinan Nijem
- Department of Energy Systems Engineering; Bahcesehir University; 34353, Besiktas Istanbul Turkey
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Yaakob Z, Kamarudin SK, Daud WRW, Yosfiah MR, Lim KL, Kazemian H. Hydrogen production by methanol-steam reforming using NiMoCu/γ-alumina trimetallic catalysts. ASIA-PAC J CHEM ENG 2009. [DOI: 10.1002/apj.411] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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