Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool
In order to avoid the construction risk caused by chemical sources in the radioactive logging of highly deviated wells, long horizontal wells and complex operating conditions, to obtain the formation data safely and efficiently, the controllable-source neutron porosity logging while drilling (LWD) t...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Well Logging Technology
2023-06-01
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| Series: | Cejing jishu |
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| Online Access: | https://www.cnpcwlt.com/#/digest?ArticleID=5490 |
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| author | CHEN Hui LUO Qingfeng AN Lyuxing YANG Ting LIU Wei ZHANG Jie |
| author_facet | CHEN Hui LUO Qingfeng AN Lyuxing YANG Ting LIU Wei ZHANG Jie |
| author_sort | CHEN Hui |
| collection | DOAJ |
| description | In order to avoid the construction risk caused by chemical sources in the radioactive logging of highly deviated wells, long horizontal wells and complex operating conditions, to obtain the formation data safely and efficiently, the controllable-source neutron porosity logging while drilling (LWD) tool can be used. The neutron generator is based on a single chip processor, and the target pressure feedback circuit is introduced to form an autonomous closed-loop control to improve the stability of neutron yield. The integrated array arrangement of multiple He-3 tubes is adopted to increase thermal neutron count and reduce statistical fluctuation. The tool structure is rationally arranged, the neutron generator drill collar water hole is placed in the center, and the He-3 tube is symmetrical distributed 180° to reduce the influence of tool eccentricity and hole clearance. Optimize neutron counting ratio parameters to improve tool sensitivity. The field test of the LWD tool in Daqing oilfield shows that the neutron porosity logging curve is consistent with the wireline logging and meets the requirements of the evaluation. |
| format | Article |
| id | doaj-art-c8c9a98eb6004bc9a04f92964b417f6a |
| institution | OA Journals |
| issn | 1004-1338 |
| language | zho |
| publishDate | 2023-06-01 |
| publisher | Editorial Office of Well Logging Technology |
| record_format | Article |
| series | Cejing jishu |
| spelling | doaj-art-c8c9a98eb6004bc9a04f92964b417f6a2025-08-20T01:55:22ZzhoEditorial Office of Well Logging TechnologyCejing jishu1004-13382023-06-0147329830210.16489/j.issn.1004-1338.2023.03.0071004-1338(2023)03-0298-05Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling ToolCHEN Hui0LUO Qingfeng1AN Lyuxing2YANG Ting3LIU Wei4ZHANG Jie5Logging Technology Research Institute, China National Logging Corporation, Xi’an, Shaanxi 710077, ChinaLogging Technology Research Institute, China National Logging Corporation, Xi’an, Shaanxi 710077, ChinaLogging Technology Research Institute, China National Logging Corporation, Xi’an, Shaanxi 710077, ChinaLogging Technology Research Institute, China National Logging Corporation, Xi’an, Shaanxi 710077, ChinaMaterial and Equipment Company, China National Logging Corporation, Xi’an, Shaanxi 710065, ChinaLogging Technology Research Institute, China National Logging Corporation, Xi’an, Shaanxi 710077, ChinaIn order to avoid the construction risk caused by chemical sources in the radioactive logging of highly deviated wells, long horizontal wells and complex operating conditions, to obtain the formation data safely and efficiently, the controllable-source neutron porosity logging while drilling (LWD) tool can be used. The neutron generator is based on a single chip processor, and the target pressure feedback circuit is introduced to form an autonomous closed-loop control to improve the stability of neutron yield. The integrated array arrangement of multiple He-3 tubes is adopted to increase thermal neutron count and reduce statistical fluctuation. The tool structure is rationally arranged, the neutron generator drill collar water hole is placed in the center, and the He-3 tube is symmetrical distributed 180° to reduce the influence of tool eccentricity and hole clearance. Optimize neutron counting ratio parameters to improve tool sensitivity. The field test of the LWD tool in Daqing oilfield shows that the neutron porosity logging curve is consistent with the wireline logging and meets the requirements of the evaluation.https://www.cnpcwlt.com/#/digest?ArticleID=5490logging while drillingneutron generatorporosityneutron detector |
| spellingShingle | CHEN Hui LUO Qingfeng AN Lyuxing YANG Ting LIU Wei ZHANG Jie Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool Cejing jishu logging while drilling neutron generator porosity neutron detector |
| title | Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool |
| title_full | Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool |
| title_fullStr | Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool |
| title_full_unstemmed | Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool |
| title_short | Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool |
| title_sort | design and implementation of the controllable source neutron porosity logging while drilling tool |
| topic | logging while drilling neutron generator porosity neutron detector |
| url | https://www.cnpcwlt.com/#/digest?ArticleID=5490 |
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