Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin

SUN Lichun; LIU Jia; LI Na; LI Xinze; WEN Heng

doi:10.11781/sysydz2025010043

Volume 47 Issue 1

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SUN Lichun, LIU Jia, LI Na, LI Xinze, WEN Heng. Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2025, 47(1): 43-53. doi: 10.11781/sysydz2025010043

Citation:

SUN Lichun, LIU Jia, LI Na, LI Xinze, WEN Heng. Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2025, 47(1): 43-53. doi: 10.11781/sysydz2025010043

Citation:

SUN Lichun, LIU Jia, LI Na, LI Xinze, WEN Heng. Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2025, 47(1): 43-53. doi: 10.11781/sysydz2025010043

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Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin

doi: 10.11781/sysydz2025010043

SUN Lichun^{1, 2
,},
LIU Jia^{1, 2
,
,},
LI Na¹,
LI Xinze¹,
WEN Heng¹

1.
Beijing Research Center of CNOOC, Beijing 100028, China
2.
China United Coalbed Methane Co., Ltd., Beijing 100016, China

Received Date: 2024-10-08
Rev Recd Date: 2024-11-26
Publish Date: 2025-01-28

Abstract

Abstract

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.
- well spacing,
- fracturing scale,
- main controlling factors of production,
- production prediction model,
- deep coalbed methane,
- Shenfu block,
- Ordos Basin

All authors declare no relevant conflict of interests.
The study was designed by SUN Lichun and LI Na. The dynamic analysis was completed by LI Xinze and WEN Heng. The manuscript was drafted and revised by LIU Jia and LI Xinze. All authors have read the final version of the paper and consented to its submission.

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References

[1]	张懿, 朱光辉, 郑求根, 等. 中国煤层气资源分布特征及勘探研究建议[J]. 非常规油气, 2022, 9(4): 1-8. ZHANG Yi, ZHU Guanghui, ZHENG Qiugen, et al. Distribution characteristics of coalbed methane resources in China and recommendations for exploration research[J]. Unconventional Oil & Gas, 2022, 9(4): 1-8.
[2]	秦勇. 中国深部煤层气地质研究进展[J]. 石油学报, 2023, 44(11): 1791-1811. doi: 10.7623/syxb202311004 QIN Yong. Progress on geological research of deep coalbed methane in China[J]. Acta Petrolei Sinica, 2023, 44(11): 1791-1811. doi: 10.7623/syxb202311004
[3]	徐长贵, 朱光辉, 季洪泉, 等. 中国海油陆上天然气勘探进展及增储发展战略[J]. 中国石油勘探, 2024, 29(1): 32-46. XU Changgui, ZHU Guanghui, JI Hongquan, et al. Exploration progress and reserve increase strategy of onshore natural gas of CNOOC[J]. China Petroleum Exploration, 2024, 29(1): 32-46.
[4]	程建, 周小进, 刘超英, 等. 中西部大盆地重点勘探领域战略选区研究[J]. 石油实验地质, 2023, 45(2): 229-237. doi: 10.11781/sysydz202302229 CHENG Jian, ZHOU Xiaojin, LIU Chaoying, et al. Strategic area selection and key exploration fields in central and western large basins[J]. Petroleum Geology & Experiment, 2023, 45(2): 229-237. doi: 10.11781/sysydz202302229
[5]	戴小河, 雷肖霄. 我国发现千亿方深煤层气田, 储量或超1100亿立方米[N]. 新华每日电讯, 2023-10-24(003). DAI Xiaohe, LEI Xiaoxiao. China has discovered a 100 billion cubic meter deep coalbed methane field with reserves potentially exceeding 110 billion cubic meters[N]. Xinhua daily telegraph, 2023-10-24(003).
[6]	朱光辉, 季洪泉, 米洪刚, 等. 神府深部煤层气大气田的发现与启示[J]. 煤田地质与勘探, 2024, 52(8): 12-21. ZHU Guanghui, JI Hongquan, MI Honggang, et al. Discovery of a large gas field of deep coalbed methane in the Shenfu block and its implications[J]. Coal Geology & Exploration, 2024, 52(8): 12-21.
[7]	徐长贵, 季洪泉, 王存武, 等. 鄂尔多斯盆地东缘临兴—神府区块深部煤层气富集规律与勘探对策[J]. 煤田地质与勘探, 2024, 52(8): 1-11. XU Changgui, JI Hongquan, WANG Cunwu, et al. Enrichment patterns and exploration countermeasures of deep coalbed methane in the Linxing-Shenfu block on the eastern margin of the Ordos Basin[J]. Coal Geology & Exploration, 2024, 52(8): 1-11.
[8]	刘建忠, 朱光辉, 刘彦成, 等. 鄂尔多斯盆地东缘深部煤层气勘探突破及未来面临的挑战与对策: 以临兴—神府区块为例[J]. 石油学报, 2023, 44(11): 1827-1839. doi: 10.7623/syxb202311006 LIU Jianzhong, ZHU Guanghui, LIU Yancheng, et al. Breakthrough, future challenges and countermeasures of deep coalbed methane in the eastern margin of Ordos Basin: a case study of Linxing-Shenfu block[J]. Acta Petrolei Sinica, 2023, 44(11): 1827-1839. doi: 10.7623/syxb202311006
[9]	郭晓娇, 王雷, 姚仙洲, 等. 深部煤岩地质特征及煤层气富集主控地质因素: 以鄂尔多斯盆地东部M区为例[J/OL]. 石油实验地质, 1-11[2024-09-01]. http://kns.cnki.net/kcms/detail/32.1151.TE.20240823.1625.002.html. GUO Xiaojiao, WANG Lei, YAO Xianzhou, et al. Geological characteristics of deep coal rock and main geological factors controlling coalbed methane enrichment: a case study of the M area in the eastern Ordos Basin[J]. Petroleum Geology & Experiment, 1-11[2024-09-01]. http://kns.cnki.net/kcms/detail/32.1151.TE.20240823.1625.002.html.
[10]	杨帆, 李斌, 王昆剑, 等. 深部煤层气水平井大规模极限体积压裂技术: 以鄂尔多斯盆地东缘临兴区块为例[J]. 石油勘探与开发, 2024, 51(2): 389-398. YANG Fan, LI Bin, WANG Kunjian, et al. Extreme massive hydraulic fracturing in deep coalbed methane horizontal wells: a case study of the Linxing block, eastern Ordos Basin, NW China[J]. Petroleum Exploration and Development, 2024, 51(2): 389-398.
[11]	安琦, 杨帆, 杨睿月, 等. 鄂尔多斯盆地神府区块深部煤层气体积压裂实践与认识[J]. 煤炭学报, 2024, 49(5): 2376-2393. AN Qi, YANG Fan, YANG Ruiyue, et al. Practice and understanding of deep coalbed methane massive hydraulic fracturing in Shenfu block, Ordos Basin[J]. Journal of China Coal Society, 2024, 49(5): 2376-2393.
[12]	徐凤银, 聂志宏, 孙伟, 等. 鄂尔多斯盆地东缘深部煤层气高效开发理论技术体系[J]. 煤炭学报, 2024, 49(1): 528-544. XU Fengyin, NIE Zhihong, SUN Wei, et al. Theoretical and technological system for highly efficient development of deep coalbed methane in the eastern edge of Erdos Basin[J]. Journal of China Coal Society, 2024, 49(1): 528-544.
[13]	赵志刚, 朱学申, 王存武, 等. 基于资源性与可压性的深部煤层气"甜点"预测[J]. 煤田地质与勘探, 2024, 52(8): 22-31. ZHAO Zhigang, ZHU Xueshen, WANG Cunwu, et al. Predicting the "sweet spot" of deep coalbed methane based on resource conditions and fracability[J]. Coal Geology & Exploration, 2024, 52(8): 22-31.
[14]	赵欣, 段士川, 王梓良, 等. 煤层气井位精细部署的地质工程一体化影响因素分析与科学优化[J]. 煤炭科学技术, 2023, 51(12): 42-51. doi: 10.12438/cst.2023-1001 ZHAO Xin, DUANG Shichuan, WANG Ziliang, et al. Analysis and scientific optimization of geological engineering integration influencing factors for precise deployment of coalbed methane well locations[J]. Coal Science and Technology, 2023, 51(12): 42-51. doi: 10.12438/cst.2023-1001
[15]	王成旺, 刘新伟, 李曙光, 等. 大宁—吉县区块深部煤层气富集主控因素分析及地质工程甜点区评价[J]. 西安石油大学学报(自然科学版), 2024, 39(4): 1-9. WANG Chengwang, LIU Xinwei, LI Shuguang, et al. Analysis of main controlling factors of deep coalbed methane enrichment and evaluation of geological and engineering sweet areas in Daning-Jixian block[J]. Journal of Xi'an Shiyou University (Natural Science Edition), 2024, 39(4): 1-9.
[16]	诸立凯. 基于深度学习的煤层气产能预测及排采制度优化研究[D]. 北京: 中国石油大学(北京), 2022. ZHU Likai. Research on coal-bed methane productivity prediction and drainage system optimization based on deep learning[D]. Beijing: China University of Petroleum (Beijing), 2022.
[17]	闫涛滔, 邓志宇, 吴鹏, 等. 鄂尔多斯盆地东缘临兴东区杨家坡区块煤层气井产能特征及主控因素[J]. 现代地质, 2024, 38(6): 1545-1556. YAN Taotao, DENG Zhiyu, WU Peng, et al. Characteristics and main control factors of coalbed methane well productivity in Yangjiapo block of eastern Linxing District, Eastern Ordos Basin[J]. Geoscience, 2024, 38(6): 1545-1556.
[18]	郭广山, 王海侨, 刘松楠, 等. 沁水盆地古交区块煤层气水平井产能影响因素分析[J]. 中国海上油气, 2024, 36(2): 110-118. GUO Guangshan, WANG Haiqiao, LIU Songnan, et al. Analysis of factors influencing the productivity of horizontal wells in Gujiao coalbed methane block of Qinshui Basin[J]. China Offshore Oil and Gas, 2024, 36(2): 110-118.
[19]	吕玉民, 柳迎红, 陈桂华, 等. 沁水盆地南部煤层气水平井产能影响因素分析[J]. 煤炭科学技术, 2020, 48(10): 225-232. LV Yumin, LIU Yinghong, CHEN Guihua, et al. Analysis of factors affecting productivity of CBM in horizontal wells in southern Qinshui Basin[J]. Coal Science and Technology, 2020, 48(10): 225-232.
[20]	李倩, 李童, 蔡益栋, 等. 煤层气储层水力裂缝扩展特征与控因研究进展[J]. 煤炭学报, 2023, 48(12): 4443-4460. LI Qian, LI Tong, CAI Yidong, et al. Research progress on hydraulic fracture characteristics and controlling factors of coalbed methane reservoirs[J]. Journal of China Coal Society, 2023, 48(12): 4443-4460.
[21]	孟庆春, 左银卿, 魏强, 等. 沁水煤层气田樊庄区块产能影响因素分析[J]. 中国煤层气, 2010, 7(6): 10-14. doi: 10.3969/j.issn.1672-3074.2010.06.003 MENG Qingchun ZUO Yinqing, WEI Qiang, et al. Analysis of factors influencing production capacity of Fanzhuang block in Qingshui CBM field[J]. China Coalbed Methane, 2010, 7(6): 10-14. doi: 10.3969/j.issn.1672-3074.2010.06.003
[22]	倪小明, 苏现波, 王庆伟, 等. 恩村井田煤层气垂直井产能地质主控因素分析[J]. 煤矿安全, 2009, 40(7): 79-82. NI Xiaoming, SU Xianbo, WANG Qingwen, et al. Analysis of geological main control factors for coalbed methane vertical well productivity in Encun Mining Field[J]. Safety in Coal Mines, 2009, 40(7): 79-82.
[23]	潘建旭, 王延斌, 倪小明, 等. 资源条件与煤层气垂直井产能关系: 以沁水盆地南部樊庄与潘庄区块为例[J]. 煤田地质与勘探, 2011, 39(4): 24-27. doi: 10.3969/j.issn.1001-1986.2011.04.007 PAN Jianxu, WANG Yanbin, NI Xiaoming, et al. The relationship between resource conditions and CBM productivity of vertical wells: case of Fanzhuang and Panzhuang blocks in southern Qinshui Basin[J]. Coal Geology & Exploration, 2011, 39(4): 24-27. doi: 10.3969/j.issn.1001-1986.2011.04.007
[24]	吕玉民, 汤达祯, 许浩, 等. 沁南盆地樊庄煤层气田早期生产特征及主控因素[J]. 煤炭学报, 2012, 37(S2): 401-406. LV Yumin, TANG Dazhen, XU Hao, et al. Initial production characteristic and its controls in Fanzhuang coalbed methane field, southern Qinshui Basin[J]. Journal of China Coal Society, 2012, 37(S2): 401-406.
[25]	彭龙仕, 乔兰, 龚敏, 等. 煤层气井多层合采产能影响因素[J]. 煤炭学报, 2014, 39(10): 2060-2067. PENG Longshi, QIAO Lan, GONG Min, et al. Factors affecting the production performance of coalbed methane wells with multiple- zone[J]. Journal of China Coal Society, 2014, 39(10): 2060-2067.
[26]	林文姬. 韩城地区煤层气藏开发动态及产能响应[D]. 北京: 中国地质大学(北京), 2014. LIN Wenji. Development dynamics and productivity responses of coalbed methane reservoirs in Hancheng area[D]. Beijing: China University of Geosciences (Beijing), 2014.
[27]	曹海霄. 沁水盆地樊庄区块煤层气藏产能评价[D]. 青岛: 中国石油大学(华东), 2017. CAO Haixiao. Evaluation of productivity for CBM reservoir in Fanzhuang block, Qinshui Basin[D]. Qingdao: China University of Petroleum (East China), 2017.
[28]	孔祥伟, 谢昕, 王存武, 等. 基于灰色关联方法的深层煤层气井压后产能影响地质工程因素评价[J]. 油气藏评价与开发, 2023, 13(4): 433-440. KONG Xiangwei, XIE Xin, WANG Cunwu, et al. Evaluation of geological engineering factors for productivity of deep CBM well after fracturing based on grey correlation method[J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 433-440.
[29]	李亚林. 基于机器学习方法研究煤层气单井产量主控因素及产量预测[D]. 北京: 中国石油大学(北京), 2017. LI Yalin. Study on main control factors and production prediction of single well production of coalbed methane based on machine learning[D]. Beijing: China University of Petroleum (Beijing), 2017.
[30]	闵超, 代博仁, 石咏衡, 等. 基于聚类匹配的煤层气压裂效果主控因素识别[J]. 特种油气藏, 2022, 29(4): 135-141. doi: 10.3969/j.issn.1006-6535.2022.04.019 MIN Chao, DAI Boren, SHI Yongheng, et al. Identification of main controlling factors of coalbed methane fracturing effect based on cluster matching[J]. Special Oil & Gas Reservoirs, 2022, 29(4): 135-141. doi: 10.3969/j.issn.1006-6535.2022.04.019

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Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin

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Main controlling factors of production and reasonable fracturing scale optimization of deep coalbed methane wells in Shenfu block, Ordos Basin

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