Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin
The production of deep coalbed methane (CBM) wells in the Shenfu block of Ordos Basin varies greatly, with a lack of understanding of the main controlling factors. To further reveal the production patterns in deep CBM wells, identify key factors affecting well production capacity, and guide the effi...
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Editorial Office of Petroleum Geology and Experiment
2025-01-01
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| Series: | Shiyou shiyan dizhi |
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| Online Access: | https://www.sysydz.net/cn/article/doi/10.11781/sysydz2025010043 |
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| author | Lichun SUN Jia LIU Na LI Xinze LI Heng WEN |
| author_facet | Lichun SUN Jia LIU Na LI Xinze LI Heng WEN |
| author_sort | Lichun SUN |
| collection | DOAJ |
| description | The production of deep coalbed methane (CBM) wells in the Shenfu block of Ordos Basin varies greatly, with a lack of understanding of the main controlling factors. To further reveal the production patterns in deep CBM wells, identify key factors affecting well production capacity, and guide the efficient development of deep CBM resources in the Shenfu block, this study analyzed the production dynamic characteristics of typical CBM wells in the area based on basic geological data, production data, and previous research results. Through individual well comparisons and overall trend analysis, the main controlling factors influencing CBM well production in the Shenfu block were identified. The results showed that the gas content and fracturing scale have the greatest impact on production. Pearson's multivariate correlation regression analysis was used to quantitatively evaluate the impact of various factors on production capacity. The factors affecting post-fracturing production capacity of deep CBM wells, ranked by correlation, are as follows: gas content > fracturing sand amount > construction flow rate > fracturing fluid volume > structural depth > thickness. Under certain geological conditions, a reasonable fracturing scale is key to the efficient development of deep CBM wells. An integrated "geological reservoir, fracturing, and economic evaluation" approach was adopted, with economic benefits as the objective. Numerical simulation was conducted to study the coupled optimization of well spacing and fracturing scale. The results determined that the optimal well spacing for the Shenfu block was 300 m, the optimal cluster spacing was 20 m, and the optimal fracture half-length was 120 m. These findings provide technical support for the efficient development of deep CBM resources in the Shenfu block. |
| format | Article |
| id | doaj-art-c16bd67753d34529834fef05729e19c3 |
| institution | Kabale University |
| issn | 1001-6112 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Petroleum Geology and Experiment |
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| series | Shiyou shiyan dizhi |
| spelling | doaj-art-c16bd67753d34529834fef05729e19c32025-02-09T07:48:48ZzhoEditorial Office of Petroleum Geology and ExperimentShiyou shiyan dizhi1001-61122025-01-01471435310.11781/sysydz2025010043sysydz-47-1-43Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos BasinLichun SUN0Jia LIU1Na LI2Xinze LI3Heng WEN4Beijing Research Center of CNOOC, Beijing 100028, ChinaBeijing Research Center of CNOOC, Beijing 100028, ChinaBeijing Research Center of CNOOC, Beijing 100028, ChinaBeijing Research Center of CNOOC, Beijing 100028, ChinaBeijing Research Center of CNOOC, Beijing 100028, ChinaThe production of deep coalbed methane (CBM) wells in the Shenfu block of Ordos Basin varies greatly, with a lack of understanding of the main controlling factors. To further reveal the production patterns in deep CBM wells, identify key factors affecting well production capacity, and guide the efficient development of deep CBM resources in the Shenfu block, this study analyzed the production dynamic characteristics of typical CBM wells in the area based on basic geological data, production data, and previous research results. Through individual well comparisons and overall trend analysis, the main controlling factors influencing CBM well production in the Shenfu block were identified. The results showed that the gas content and fracturing scale have the greatest impact on production. Pearson's multivariate correlation regression analysis was used to quantitatively evaluate the impact of various factors on production capacity. The factors affecting post-fracturing production capacity of deep CBM wells, ranked by correlation, are as follows: gas content > fracturing sand amount > construction flow rate > fracturing fluid volume > structural depth > thickness. Under certain geological conditions, a reasonable fracturing scale is key to the efficient development of deep CBM wells. An integrated "geological reservoir, fracturing, and economic evaluation" approach was adopted, with economic benefits as the objective. Numerical simulation was conducted to study the coupled optimization of well spacing and fracturing scale. The results determined that the optimal well spacing for the Shenfu block was 300 m, the optimal cluster spacing was 20 m, and the optimal fracture half-length was 120 m. These findings provide technical support for the efficient development of deep CBM resources in the Shenfu block.https://www.sysydz.net/cn/article/doi/10.11781/sysydz2025010043well spacingfracturing scalemain controlling factors of productionproduction prediction modeldeep coalbed methaneshenfu blockordos basin |
| spellingShingle | Lichun SUN Jia LIU Na LI Xinze LI Heng WEN Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin Shiyou shiyan dizhi well spacing fracturing scale main controlling factors of production production prediction model deep coalbed methane shenfu block ordos basin |
| title | Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin |
| title_full | Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin |
| title_fullStr | Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin |
| title_full_unstemmed | Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin |
| title_short | Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin |
| title_sort | main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in shenfu block ordos basin |
| topic | well spacing fracturing scale main controlling factors of production production prediction model deep coalbed methane shenfu block ordos basin |
| url | https://www.sysydz.net/cn/article/doi/10.11781/sysydz2025010043 |
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