A study on the electrical characteristics of fractured gas hydrate reservoirs based on digital rock technology
The electrical characteristics of fractured gas hydrate reservoirs were investigated through the diffusion-limited aggregation model, digital rock technology, and the finite element method. The results show that the fracture and gas hydrate have a significant effect on the electrical characteristics...
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| Veröffentlicht in: | Lithosphere 2021, Vol.2021 (Special 4) |
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| container_issue | Special 4 |
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| container_title | Lithosphere |
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| creator | Yang Hu, Yang Hu Xue Xiaojun, Xue Xiaojun Chen Xianghui, Chen Xianghui Xie Junyu, Xie Junyu Zheng Qinglong, Zheng Qinglong |
| description | The electrical characteristics of fractured gas hydrate reservoirs were investigated through the diffusion-limited aggregation model, digital rock technology, and the finite element method. The results show that the fracture and gas hydrate have a significant effect on the electrical characteristics of rock partially saturated with gas hydrate, where the matrix pore and fracture mixed gas hydrate form a dual-porosity system. Due to the fracture and gas hydrate effect, the electrical characteristics of fractured gas hydrate reservoirs cannot be described well by traditional Archie equations. The resistivity index vs. water saturation curve of fractured gas hydrate reservoirs shows a nonlinear relationship for different gas hydrate pore habits (pore-filling, cementing, and grain-coating types), and this curve consists of two parts with different gas hydrate saturation exponents for pore-filling and cementing gas hydrate and presents a curve without a fixed water saturation exponent for grain-coating gas hydrate. Fractured gas hydrate reservoirs with different fracture apertures, different gas hydrate pore habits, and saturation features will lead to macroscopic electrical anisotropy. The results of theoretical analysis and numerical simulation show that the electrical anisotropy coefficient of fractured gas hydrate reservoirs is a function of gas hydrate saturation. The function curve consists of three segments with the turning point for pore-filling and cementing gas hydrate, and this curve can be divided into two parts through the turning point. The findings of this study can help for a better understanding of the electrical characteristics of fractured gas hydrate reservoirs, which have great significance for the exploration and development of gas hydrate resources. |
| doi_str_mv | 10.2113/2021/1365284 |
| format | Article |
| fullrecord | <record><control><sourceid>geoscienceworld_cross</sourceid><recordid>TN_cdi_crossref_primary_10_2113_2021_1365284</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2022_000833</sourcerecordid><originalsourceid>FETCH-LOGICAL-a332t-d492100e8578d47db98550691ba6252b4583a6217cfe84898f7c6cc81de7b5e23</originalsourceid><addsrcrecordid>eNotkMtOwzAQRS0EEqWw4wO8h1A_Y2dZVbykSmxgHTn2JHEJMbJdUP-ehHY1VzNHV6OD0C0lD4xSvmKE0RXlpWRanKEFrYQqBJP8_D_TQrNSXKKrlHaElKVSaoHGNU557w44jDj3gGEAm6O3ZsC2N9HYDNGn7G3CocXtvNhHcLgzCfcHF00GHCFB_Ak-JtyYNB2nLuc7n6eSGOwnzmD7MQyhO1yji9YMCW5Oc4k-nh7fNy_F9u35dbPeFoZzlgsnKkYJAS2VdkK5ptJSkrKijSmZZI2Qmk-JKtuCFrrSrbKltZo6UI0Expfo_thrY0gpQlt_R_9l4qGmpJ5d1bOr-uRqwu-OeAchWQ-jhd8QB1fvwj6O06MzzmpCiOac_wG5OWvp</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>A study on the electrical characteristics of fractured gas hydrate reservoirs based on digital rock technology</title><source>DOAJ Directory of Open Access Journals</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>Yang Hu, Yang Hu ; Xue Xiaojun, Xue Xiaojun ; Chen Xianghui, Chen Xianghui ; Xie Junyu, Xie Junyu ; Zheng Qinglong, Zheng Qinglong</creator><contributor>Liu, Hao</contributor><creatorcontrib>Yang Hu, Yang Hu ; Xue Xiaojun, Xue Xiaojun ; Chen Xianghui, Chen Xianghui ; Xie Junyu, Xie Junyu ; Zheng Qinglong, Zheng Qinglong ; Liu, Hao</creatorcontrib><description>The electrical characteristics of fractured gas hydrate reservoirs were investigated through the diffusion-limited aggregation model, digital rock technology, and the finite element method. The results show that the fracture and gas hydrate have a significant effect on the electrical characteristics of rock partially saturated with gas hydrate, where the matrix pore and fracture mixed gas hydrate form a dual-porosity system. Due to the fracture and gas hydrate effect, the electrical characteristics of fractured gas hydrate reservoirs cannot be described well by traditional Archie equations. The resistivity index vs. water saturation curve of fractured gas hydrate reservoirs shows a nonlinear relationship for different gas hydrate pore habits (pore-filling, cementing, and grain-coating types), and this curve consists of two parts with different gas hydrate saturation exponents for pore-filling and cementing gas hydrate and presents a curve without a fixed water saturation exponent for grain-coating gas hydrate. Fractured gas hydrate reservoirs with different fracture apertures, different gas hydrate pore habits, and saturation features will lead to macroscopic electrical anisotropy. The results of theoretical analysis and numerical simulation show that the electrical anisotropy coefficient of fractured gas hydrate reservoirs is a function of gas hydrate saturation. The function curve consists of three segments with the turning point for pore-filling and cementing gas hydrate, and this curve can be divided into two parts through the turning point. The findings of this study can help for a better understanding of the electrical characteristics of fractured gas hydrate reservoirs, which have great significance for the exploration and development of gas hydrate resources.</description><identifier>ISSN: 1941-8264</identifier><identifier>EISSN: 1947-4253</identifier><identifier>DOI: 10.2113/2021/1365284</identifier><language>eng</language><publisher>GeoScienceWorld</publisher><subject>data processing ; Economic geology ; electrical methods ; energy sources ; experimental studies ; fractured materials ; gas hydrates ; geophysical methods ; image analysis ; numerical models ; petroleum engineering ; porosity ; reservoir rocks ; resistivity ; saturation ; simulation ; technology ; two-dimensional models</subject><ispartof>Lithosphere, 2021, Vol.2021 (Special 4)</ispartof><rights>GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld @Alexandria, VA @USA @United States. Reference includes data supplied by the Geological Society of America @Boulder, CO @USA @United States</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a332t-d492100e8578d47db98550691ba6252b4583a6217cfe84898f7c6cc81de7b5e23</citedby><cites>FETCH-LOGICAL-a332t-d492100e8578d47db98550691ba6252b4583a6217cfe84898f7c6cc81de7b5e23</cites><orcidid>0000-0002-5981-7141</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,864,4024,27923,27924,27925</link.rule.ids></links><search><contributor>Liu, Hao</contributor><creatorcontrib>Yang Hu, Yang Hu</creatorcontrib><creatorcontrib>Xue Xiaojun, Xue Xiaojun</creatorcontrib><creatorcontrib>Chen Xianghui, Chen Xianghui</creatorcontrib><creatorcontrib>Xie Junyu, Xie Junyu</creatorcontrib><creatorcontrib>Zheng Qinglong, Zheng Qinglong</creatorcontrib><title>A study on the electrical characteristics of fractured gas hydrate reservoirs based on digital rock technology</title><title>Lithosphere</title><description>The electrical characteristics of fractured gas hydrate reservoirs were investigated through the diffusion-limited aggregation model, digital rock technology, and the finite element method. The results show that the fracture and gas hydrate have a significant effect on the electrical characteristics of rock partially saturated with gas hydrate, where the matrix pore and fracture mixed gas hydrate form a dual-porosity system. Due to the fracture and gas hydrate effect, the electrical characteristics of fractured gas hydrate reservoirs cannot be described well by traditional Archie equations. The resistivity index vs. water saturation curve of fractured gas hydrate reservoirs shows a nonlinear relationship for different gas hydrate pore habits (pore-filling, cementing, and grain-coating types), and this curve consists of two parts with different gas hydrate saturation exponents for pore-filling and cementing gas hydrate and presents a curve without a fixed water saturation exponent for grain-coating gas hydrate. Fractured gas hydrate reservoirs with different fracture apertures, different gas hydrate pore habits, and saturation features will lead to macroscopic electrical anisotropy. The results of theoretical analysis and numerical simulation show that the electrical anisotropy coefficient of fractured gas hydrate reservoirs is a function of gas hydrate saturation. The function curve consists of three segments with the turning point for pore-filling and cementing gas hydrate, and this curve can be divided into two parts through the turning point. The findings of this study can help for a better understanding of the electrical characteristics of fractured gas hydrate reservoirs, which have great significance for the exploration and development of gas hydrate resources.</description><subject>data processing</subject><subject>Economic geology</subject><subject>electrical methods</subject><subject>energy sources</subject><subject>experimental studies</subject><subject>fractured materials</subject><subject>gas hydrates</subject><subject>geophysical methods</subject><subject>image analysis</subject><subject>numerical models</subject><subject>petroleum engineering</subject><subject>porosity</subject><subject>reservoir rocks</subject><subject>resistivity</subject><subject>saturation</subject><subject>simulation</subject><subject>technology</subject><subject>two-dimensional models</subject><issn>1941-8264</issn><issn>1947-4253</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNotkMtOwzAQRS0EEqWw4wO8h1A_Y2dZVbykSmxgHTn2JHEJMbJdUP-ehHY1VzNHV6OD0C0lD4xSvmKE0RXlpWRanKEFrYQqBJP8_D_TQrNSXKKrlHaElKVSaoHGNU557w44jDj3gGEAm6O3ZsC2N9HYDNGn7G3CocXtvNhHcLgzCfcHF00GHCFB_Ak-JtyYNB2nLuc7n6eSGOwnzmD7MQyhO1yji9YMCW5Oc4k-nh7fNy_F9u35dbPeFoZzlgsnKkYJAS2VdkK5ptJSkrKijSmZZI2Qmk-JKtuCFrrSrbKltZo6UI0Expfo_thrY0gpQlt_R_9l4qGmpJ5d1bOr-uRqwu-OeAchWQ-jhd8QB1fvwj6O06MzzmpCiOac_wG5OWvp</recordid><startdate>2021</startdate><enddate>2021</enddate><creator>Yang Hu, Yang Hu</creator><creator>Xue Xiaojun, Xue Xiaojun</creator><creator>Chen Xianghui, Chen Xianghui</creator><creator>Xie Junyu, Xie Junyu</creator><creator>Zheng Qinglong, Zheng Qinglong</creator><general>GeoScienceWorld</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-5981-7141</orcidid></search><sort><creationdate>2021</creationdate><title>A study on the electrical characteristics of fractured gas hydrate reservoirs based on digital rock technology</title><author>Yang Hu, Yang Hu ; Xue Xiaojun, Xue Xiaojun ; Chen Xianghui, Chen Xianghui ; Xie Junyu, Xie Junyu ; Zheng Qinglong, Zheng Qinglong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a332t-d492100e8578d47db98550691ba6252b4583a6217cfe84898f7c6cc81de7b5e23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>data processing</topic><topic>Economic geology</topic><topic>electrical methods</topic><topic>energy sources</topic><topic>experimental studies</topic><topic>fractured materials</topic><topic>gas hydrates</topic><topic>geophysical methods</topic><topic>image analysis</topic><topic>numerical models</topic><topic>petroleum engineering</topic><topic>porosity</topic><topic>reservoir rocks</topic><topic>resistivity</topic><topic>saturation</topic><topic>simulation</topic><topic>technology</topic><topic>two-dimensional models</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang Hu, Yang Hu</creatorcontrib><creatorcontrib>Xue Xiaojun, Xue Xiaojun</creatorcontrib><creatorcontrib>Chen Xianghui, Chen Xianghui</creatorcontrib><creatorcontrib>Xie Junyu, Xie Junyu</creatorcontrib><creatorcontrib>Zheng Qinglong, Zheng Qinglong</creatorcontrib><collection>CrossRef</collection><jtitle>Lithosphere</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang Hu, Yang Hu</au><au>Xue Xiaojun, Xue Xiaojun</au><au>Chen Xianghui, Chen Xianghui</au><au>Xie Junyu, Xie Junyu</au><au>Zheng Qinglong, Zheng Qinglong</au><au>Liu, Hao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A study on the electrical characteristics of fractured gas hydrate reservoirs based on digital rock technology</atitle><jtitle>Lithosphere</jtitle><date>2021</date><risdate>2021</risdate><volume>2021</volume><issue>Special 4</issue><issn>1941-8264</issn><eissn>1947-4253</eissn><abstract>The electrical characteristics of fractured gas hydrate reservoirs were investigated through the diffusion-limited aggregation model, digital rock technology, and the finite element method. The results show that the fracture and gas hydrate have a significant effect on the electrical characteristics of rock partially saturated with gas hydrate, where the matrix pore and fracture mixed gas hydrate form a dual-porosity system. Due to the fracture and gas hydrate effect, the electrical characteristics of fractured gas hydrate reservoirs cannot be described well by traditional Archie equations. The resistivity index vs. water saturation curve of fractured gas hydrate reservoirs shows a nonlinear relationship for different gas hydrate pore habits (pore-filling, cementing, and grain-coating types), and this curve consists of two parts with different gas hydrate saturation exponents for pore-filling and cementing gas hydrate and presents a curve without a fixed water saturation exponent for grain-coating gas hydrate. Fractured gas hydrate reservoirs with different fracture apertures, different gas hydrate pore habits, and saturation features will lead to macroscopic electrical anisotropy. The results of theoretical analysis and numerical simulation show that the electrical anisotropy coefficient of fractured gas hydrate reservoirs is a function of gas hydrate saturation. The function curve consists of three segments with the turning point for pore-filling and cementing gas hydrate, and this curve can be divided into two parts through the turning point. The findings of this study can help for a better understanding of the electrical characteristics of fractured gas hydrate reservoirs, which have great significance for the exploration and development of gas hydrate resources.</abstract><pub>GeoScienceWorld</pub><doi>10.2113/2021/1365284</doi><orcidid>https://orcid.org/0000-0002-5981-7141</orcidid><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | data processing Economic geology electrical methods energy sources experimental studies fractured materials gas hydrates geophysical methods image analysis numerical models petroleum engineering porosity reservoir rocks resistivity saturation simulation technology two-dimensional models |
| title | A study on the electrical characteristics of fractured gas hydrate reservoirs based on digital rock technology |
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