Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin
After several years of exploration practices in the Changning-Weiyuan national shale gas pilot zone, the industrial production has been achieved in a number of vertical and horizontal wells completed by SRV fracturing, and a series of independent shale gas reservoir stimulation technologies have com...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2015-03-01
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| Series: | Natural Gas Industry B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352854015000364 |
| _version_ | 1797282271122685952 |
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| author | Bin Qian Juncheng Zhang Juhui Zhu Zeben Fang Shuangfeng Kou Rui Chen |
| author_facet | Bin Qian Juncheng Zhang Juhui Zhu Zeben Fang Shuangfeng Kou Rui Chen |
| author_sort | Bin Qian |
| collection | DOAJ |
| description | After several years of exploration practices in the Changning-Weiyuan national shale gas pilot zone, the industrial production has been achieved in a number of vertical and horizontal wells completed by SRV fracturing, and a series of independent shale gas reservoir stimulation technologies have come into being. Next, it is necessary to consider how to enhance the efficiency of fracturing by a factory-mode operation. This paper presents the deployment of Changning Well Pad A, the first cluster horizontal shale gas well group, and proposes the optimal design for the factory operation mode of this Pad according to the requirements of wellpad fracturing stimulation technologies and the mountainous landform in the Sichuan Basin. Accordingly, a zipper-fracturing mode was firstly adopted in the factory fracturing on wellpad. With the application of standardized field process, zipper operation, assembly line work, staggered placement of downhole fractures, and microseismic monitoring in real time, the speed of fracturing reached 3.16 stages a day on average, and the stimulated reservoir volume was maximized, which has fully revealed how the factory operation mode contributes to the large-scale SRV fracturing of horizontal shale gas cluster wells on wellpads in the aspect of speed and efficiency. Moreover, the fracturing process, operation mode, surface facilities and post-fracturing preliminary evaluation of the zipper-fracturing in the well group were examined comprehensively. It is concluded from the practice that the zipper-fracturing in the two wells enhanced the efficiency by 78% and stimulated reservoir volume by 50% compared with the single-well fracturing at the preliminary stage in this area. |
| first_indexed | 2024-03-07T17:10:26Z |
| format | Article |
| id | doaj.art-1965f1a3614546fd98b97abafbb9a712 |
| institution | Directory Open Access Journal |
| issn | 2352-8540 |
| language | English |
| last_indexed | 2024-03-07T17:10:26Z |
| publishDate | 2015-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Natural Gas Industry B |
| spelling | doaj.art-1965f1a3614546fd98b97abafbb9a7122024-03-03T01:17:04ZengKeAi Communications Co., Ltd.Natural Gas Industry B2352-85402015-03-012218118410.1016/j.ngib.2015.07.008Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan BasinBin QianJuncheng ZhangJuhui ZhuZeben FangShuangfeng KouRui ChenAfter several years of exploration practices in the Changning-Weiyuan national shale gas pilot zone, the industrial production has been achieved in a number of vertical and horizontal wells completed by SRV fracturing, and a series of independent shale gas reservoir stimulation technologies have come into being. Next, it is necessary to consider how to enhance the efficiency of fracturing by a factory-mode operation. This paper presents the deployment of Changning Well Pad A, the first cluster horizontal shale gas well group, and proposes the optimal design for the factory operation mode of this Pad according to the requirements of wellpad fracturing stimulation technologies and the mountainous landform in the Sichuan Basin. Accordingly, a zipper-fracturing mode was firstly adopted in the factory fracturing on wellpad. With the application of standardized field process, zipper operation, assembly line work, staggered placement of downhole fractures, and microseismic monitoring in real time, the speed of fracturing reached 3.16 stages a day on average, and the stimulated reservoir volume was maximized, which has fully revealed how the factory operation mode contributes to the large-scale SRV fracturing of horizontal shale gas cluster wells on wellpads in the aspect of speed and efficiency. Moreover, the fracturing process, operation mode, surface facilities and post-fracturing preliminary evaluation of the zipper-fracturing in the well group were examined comprehensively. It is concluded from the practice that the zipper-fracturing in the two wells enhanced the efficiency by 78% and stimulated reservoir volume by 50% compared with the single-well fracturing at the preliminary stage in this area.http://www.sciencedirect.com/science/article/pii/S2352854015000364Sichuan BasinChangning blockShale gasHorizontal wellWell clusterFactoryStimulationZipper-fracturing |
| spellingShingle | Bin Qian Juncheng Zhang Juhui Zhu Zeben Fang Shuangfeng Kou Rui Chen Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin Natural Gas Industry B Sichuan Basin Changning block Shale gas Horizontal well Well cluster Factory Stimulation Zipper-fracturing |
| title | Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin |
| title_full | Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin |
| title_fullStr | Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin |
| title_full_unstemmed | Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin |
| title_short | Application of zipper-fracturing of horizontal cluster wells in the Changning shale gas pilot zone, Sichuan Basin |
| title_sort | application of zipper fracturing of horizontal cluster wells in the changning shale gas pilot zone sichuan basin |
| topic | Sichuan Basin Changning block Shale gas Horizontal well Well cluster Factory Stimulation Zipper-fracturing |
| url | http://www.sciencedirect.com/science/article/pii/S2352854015000364 |
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