Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media
In this paper, the flowing mechanism and function on the macroscopic and microscopic scale in the porous media of a widely used weak gel of an acrylamide based polymer crosslinked with chromium(III) were studied. Innovative microscopic plane visualization model was designed for microscopic scale exp...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2016/2379362 |
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| _version_ | 1832550586222903296 |
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| author | Jian Wang Bo Kang Liehui Zhang Beata Joanna Darowska Peng Xu |
| author_facet | Jian Wang Bo Kang Liehui Zhang Beata Joanna Darowska Peng Xu |
| author_sort | Jian Wang |
| collection | DOAJ |
| description | In this paper, the flowing mechanism and function on the macroscopic and microscopic scale in the porous media of a widely used weak gel of an acrylamide based polymer crosslinked with chromium(III) were studied. Innovative microscopic plane visualization model was designed for microscopic scale experiment and sand pack physical model for macroscopic scale. The microscopic displacing experiments indicate that weak gel mainly intrudes into big pores rather than small ones, which can improve the conformance horizontally and increase the sweep efficiency benefiting from fluid diversion. Additionally, due to good viscoelasticity of weak gel, the negative pressure effect was formed enhancing oil recovery flow from small pore throats. Results of macroscopic physical sand pack flow experiment indicate positive influence of weak gel on vertical conformance control. Although the high permeable layer was not completely blocked, the oil recovery improved as a result of weak gel movement by continuous water flooding. Experiments results lead to conclusion, the primary function of weak gel is oil displacement, profile modification is secondary, and its effect is temporary. |
| format | Article |
| id | doaj-art-b464497c7dba44f089b5c7c460d62470 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-b464497c7dba44f089b5c7c460d624702025-02-03T06:06:24ZengWileyJournal of Chemistry2090-90632090-90712016-01-01201610.1155/2016/23793622379362Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous MediaJian Wang0Bo Kang1Liehui Zhang2Beata Joanna Darowska3Peng Xu4State Key Laboratory of Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaState Key Laboratory of Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaState Key Laboratory of Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaChengdu North Petroleum Exploration and Development Technology Company Ltd., Chengdu, Sichuan 610051, ChinaState Key Laboratory of Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, ChinaIn this paper, the flowing mechanism and function on the macroscopic and microscopic scale in the porous media of a widely used weak gel of an acrylamide based polymer crosslinked with chromium(III) were studied. Innovative microscopic plane visualization model was designed for microscopic scale experiment and sand pack physical model for macroscopic scale. The microscopic displacing experiments indicate that weak gel mainly intrudes into big pores rather than small ones, which can improve the conformance horizontally and increase the sweep efficiency benefiting from fluid diversion. Additionally, due to good viscoelasticity of weak gel, the negative pressure effect was formed enhancing oil recovery flow from small pore throats. Results of macroscopic physical sand pack flow experiment indicate positive influence of weak gel on vertical conformance control. Although the high permeable layer was not completely blocked, the oil recovery improved as a result of weak gel movement by continuous water flooding. Experiments results lead to conclusion, the primary function of weak gel is oil displacement, profile modification is secondary, and its effect is temporary.http://dx.doi.org/10.1155/2016/2379362 |
| spellingShingle | Jian Wang Bo Kang Liehui Zhang Beata Joanna Darowska Peng Xu Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media Journal of Chemistry |
| title | Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media |
| title_full | Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media |
| title_fullStr | Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media |
| title_full_unstemmed | Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media |
| title_short | Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media |
| title_sort | macroscopic profile modification and microscopic displacement mechanism of weak gel flowing in porous media |
| url | http://dx.doi.org/10.1155/2016/2379362 |
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