鄂尔多斯盆地保德区块煤层气井可采储量与产气特征研究

doi:10.13809/j.cnki.cn32-1825/te.2025.02.010

Abstract

Abstract:

In order to clarify the gas production characteristics of medium and low rank coalbed methane wells in different regions of the Baode block of the Ordos Basin, and to guide strategy development, methods such as the Arps decline analysis, production accumulation method, and flowing material balance method were applied in conjunction with actual production data from the block to establish a calculation method for recoverable coalbed methane reserves applicable to different stages of development. Through the comprehensive application of data statistics, production dynamic analysis, and other methods, the recoverable reserves and gas production characteristics of three development units (Development Unit 1 to Unit 3) in the block were systematically studied. By comparing geological and development parameters, the influence of geological condition differences on gas production characteristics was clarified. The results showed that from north to south (Development Unit 1 to Unit 3) in the Baode block, the daily gas production during the stable production period decreased from 3 314 m³ to 864 m³, the gas recovery rate declined from 3.82% to 0.99%, the recoverable reserves reduced from 1 391×10⁴ m³ to 399×10⁴ m³, and the recovery factor dropped from 48.50% to 16.99%. Meanwhile, the gas breakthrough time extended from 99 days to 228 days, and the stable production duration increased from 981 days to 1 553 days. Correlation analysis showed that daily gas production during the stable production period was significantly correlated with the temporary storage ratio, critical desorption pressure, and the thickness of the 8+9 coal seam, while recoverable reserves were highly correlated with the thickness of the 8+9 coal seam and the gas content of the 4+5 coal seam. A comparison of geological parameters indicated that the main coal seam thickness, gas content, and temporary storage ratio in Development Unit 1 were superior to those in Development Unit 2 and Unit 3, and the preservation conditions were also better. The study concludes that the north-south differences in gas production characteristics of the Baode block are primarily influenced by geological conditions. The northern Development Unit 1 has superior resource conditions, with thicker coal seams, higher gas content, and a larger temporary storage ratio, resulting in higher stable gas production and higher recovery rates. The southern Development Unit 3 has poorer resource conditions, leading to lower stable gas production but longer stable production periods. The findings provide a scientific basis for the efficient development of medium and low rank coalbed methane fields and the optimization of different unit drainage systems in the Baode block.

Key words: Baode block, medium and low coal rank, coalbed methane, recoverable reserves, gas production characteristics

CLC Number:

TE328

ZHANG Wen,HUANG Hongxing,LIU Ying, et al. Research on recoverable reserves and gas production characteristics of coalbed methane wells in Baode block of Ordos Basin[J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 257-265.

Figures/Tables 14

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Table 1

Fig. 9

Fig. 10

Table 2

Table 3

Table 4

References 27

[1]	田炜, 王会涛. 沁水盆地高阶煤煤层气开发再认识[J]. 天然气工业, 2015, 35(6): 117-123.
	TIAN Wei, WANG Huitao. Latest understandings of the CBM development from high-rank coals in the Qinshui Basin[J]. Natural Gas Industry, 2015, 35(6): 117-123.
[2]	郑永旺, 崔轶男, 李鑫, 等. 深层高阶煤层CO₂-ECBM技术研究与应用启示: 以沁水盆地晋中地区为例[J]. 石油实验地质, 2025, 47(1): 143-152.
	ZHENG Yongwang, CUI Yinan, LI Xin, XIAO Cui, et al. Research and insights for application of CO₂-ECBM technology in deep high-rank coal seams: a case study of Jinzhong block, Qinshui Basin[J]. Petroleum Geology & Experiment, 2025, 47(1): 143-152.
[3]	张嘉琪, 刘曾勤, 申宝剑, 等. 国内外深层煤层气勘探开发进展与启示[J]. 石油实验地质, 2025, 47(1): 1-8.
	ZHANG Jiaqi, LIU Zengqin, SHEN Baojian, et al. Progress and insights from worldwide deep coalbed methane exploration and development[J]. Petroleum Geology & Experiment, 2025, 47(1): 1-8.
[4]	温声明, 文桂华, 李星涛, 等. 地质工程一体化在保德煤层气田勘探开发中的实践与成效[J]. 中国石油勘探, 2018, 23(2): 69-75.
	WEN Shengming, WEN Guihua, LI Xingtao, et al. Application and effect of geology-engineering integration in the exploration and development of Baode CBM field[J]. China Petroleum Exploration, 2018, 23(2): 69-75.
[5]	陈博, 汤达祯, 林文姬, 等. 基于地质建模的保德Ⅰ单元煤层气井产能响应特征[J]. 煤田地质与勘探, 2020, 48(5): 53-63.
	CHEN Bo, TANG Dazhen, LIN Wenji, et al. Geological modeling-based productivity response characteristics of the CBM well in Baode unit Ⅰ[J]. Coal Geology & Exploration, 2020, 48(5): 53-63.
[6]	胡秋嘉, 李梦溪, 王立龙, 等. 樊庄区块煤层气直井产气曲线特征分析[J]. 中国煤层气, 2012, 9(6): 3-7.
	HU Qiujia, LI Mengxi, WANG Lilong, et al. Analysis on coalbed methane straight well gas yield curve characteristic of Fanzhuang Block[J]. China Coalbed Methane, 2012, 9(6): 3-7.
[7]	贾慧敏, 胡秋嘉, 樊彬, 等. 沁水盆地郑庄区块北部煤层气直井低产原因及高效开发技术[J]. 煤田地质与勘探, 2021, 49(2): 34-42.
	JIA Huimin, HU Qiujia, FAN Bin, et al. Causes for low CBM production of vertical wells and efficient development technology in northern Zhengzhuang Block in Qinshui Basin[J]. Coal Geology & Exploration, 2021, 49(2): 34-42.
[8]	刘世奇, 方辉煌, 桑树勋, 等. 沁水盆地南部煤层气直井合层排采产气效果数值模拟[J]. 煤田地质与勘探, 2022, 50(6): 20-31.
	LIU Shiqi, FANG Huihuang, SANG Shuxun, et al. Numerical simulation of gas production for multilayer drainage coalbed methane vertical wells in southern Qinshui Basin[J]. Coal Geology & Exploration, 2022, 50(6): 20-31.
[9]	刘升贵, 袁文峰, 张新亮, 等. 潘庄区块煤层气井产气曲线特征及采收率的研究[J]. 煤炭学报, 2013, 38(增刊1): 164-167.
	LIU Shenggui, YUAN Wenfeng, ZHANG Xinliang, et al. The production curve and recovery rate of coalbed methane well in Panzhuang block[J]. Journal of China Coal Society, 2013, 38(Suppl. 1): 164-167.
[10]	周叡, 鲁秀芹, 张俊杰, 等. 沁水盆地樊庄区块煤层气开发生产规律分析[J]. 煤炭科学技术, 2018, 46(6): 69-73.
	ZHOU Rui, LU Xiuqin, ZHANG Junjie, et al. Analysis on development and production law of CBM in Fanzhuang Block of Qinshui Basin[J]. Coal Science and Technology, 2018, 46(6): 69-73.
[11]	苗耀, 牛绪海, 左银卿. 沁水盆地樊庄区块煤层气高产井递减特征及采收率预测[J]. 煤炭技术, 2014, 33(9): 318-320.
	MIAO Yao, NIU Xuhai, ZUO Yinqing. Production decline characteristics and recovery rate forcasting for coalbed methane well of high production in Fanzhuang Block Qinshui Basin[J]. Coal Technology, 2014, 33(9): 318-320.
[12]	苗耀, 左银卿, 周叡, 等. 沁水煤层气田开发直井全生命周期产量预测方法[J]. 中国煤层气, 2015, 12(6): 19-22.
	MIAO Yao, ZUO Yinqing, ZHOU Rui, et al. A prediction method on CBM production of vertical wells of whole cycle in Qinshui CBM Field[J]. China Coalbed Methane, 2015, 12(6): 19-22.
[13]	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]. 石油实验地质, 2025, 47(1): 17-26.
	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, 2025, 47(1): 17-26.
[14]	闫霞, 温声明, 聂志宏, 等. 影响煤层气开发效果的地质因素再认识[J]. 断块油气田, 2020, 27(3): 375-380.
	YAN Xia, WEN Shengming, NIE Zhihong, et al. Re-recognition of geological factors affecting coalbed methane development effect[J]. Fault-Block Oil & Gas Field, 2020, 27(3): 375-380.
[15]	孙立春, 刘佳, 李娜, 等. 鄂尔多斯盆地神府区块深部煤层气井产量主控因素及合理压裂规模优化[J]. 石油实验地质, 2025, 47(1): 43-53.
	SUN Lichun, LIU Jia, LI Na, et al. 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.
[16]	王渊, 王辰龙, 王凤清. 煤层气井压降规律与排采参数关系分析: 以保德区块为例[J]. 石油钻采工艺, 2019, 41(4): 502-508.
	WANG Yuan, WANG Chenlong, WANG Fengqing. Analysis on the relationship between pressure drop laws and production parameters of CBM well: A case study on the Baode Block[J]. Oil Drilling & Production Technology, 2019, 41(4): 502-508.
[17]	张雷, 郝帅, 张伟, 等. 中低煤阶煤层气储量复算及认识: 以鄂尔多斯盆地东缘保德煤层气田为例[J]. 石油实验地质, 2020, 42(1): 147-155.
	ZHANG Lei, HAO Shuai, ZHANG Wei, et al. Recalculation and understanding of middle and low rank coalbed methane reserves: A case study of Baode Coalbed Methane Field on the eastern edge of Ordos Basin[J]. Petroleum Geology & Experiment, 2020, 42(1): 147-155.
[18]	杨秀春, 毛建设, 林文姬, 等. 保德区块煤层气勘探历程与启示[J]. 新疆石油地质, 2021, 42(3): 381-388.
	YANG Xiuchun, MAO Jianshe, LIN Wenji, et al. Exploration history and enlightenment of coalbed methane in Baode Block[J]. Xinjiang Petroleum Geology, 2021, 42(3): 381-388.
[19]	张庆丰, 李子玲, 张继坤, 等. 鄂尔多斯盆地保德区块二叠系太原组—山西组主采煤层脆性评价: 基于卷积神经网络方法[J]. 石油实验地质, 2025, 47(1): 204-212.
	ZHANG Qingfeng, LI Ziling, ZHANG Jikun, et al. Brittleness evaluation of main coal seams in Permian Taiyuan-Shanxi formations, Baode block, Ordos Basin: Based on a convolutional neural network method[J]. Petroleum Geology & Experiment, 2025, 47(1): 204-212.
[20]	周亚彤. 延川南煤层气田动态特征和SEC动态储量评估方法研究[J]. 油气藏评价与开发, 2020, 10(4): 53-58.
	ZHOU Yatong. Dynamic characteristics and SEC dynamic reserve assessment of CBM gas field in South Yanchuan[J]. Reservoir Evaluation and Development, 2020, 10(4): 53-58.
[21]	陈浩, 李建明, 孙斌. 煤岩等温吸附曲线特征在煤层气研究中的应用[J]. 重庆科技学院学报(自然科学版), 2011, 13(2): 24-26.
	CHEN Hao, LI Jianming, SUN Bin. Application of characteristics of the coal isothermal adsorption curve in coalbed methane research[J]. Journal of Chongqing University of Science and Technology (Natural Sciences Edition), 2011, 13(2): 24-26.
[22]	曹毅民, 丁蓉, 赵启阳, 等. 煤层气可采储量计算方法的评价与应用[J]. 天然气工业, 2018, 38(增刊1): 50-56.
	CAO Yimin, DING Rong, ZHAO Qiyang, et al. Evaluation and application for calculation method of recoverable reserves of coalbed methane[J]. Natural Gas Industry, 2018, 38(Suppl. 1): 50-56.
[23]	胡秋嘉, 贾慧敏, 张聪, 等. 高阶煤煤层气井稳产时间预测方法及应用: 以沁水盆地南部樊庄-郑庄为例[J]. 煤田地质与勘探, 2022, 50(9): 137-144.
	HU Qiujia, JIA Huimin, ZHANG Cong, et al. Stable-production period prediction method and application in high-rank coalbed methane wells: A case study of Fanzhuang-Zhengzhuang Block in southern Qinshui Basin[J]. Coal Geology & Exploration, 2022, 50(9): 137-144.
[24]	张万茂. 苏东区块地层压力与动储量评价[D]. 成都: 成都理工大学, 2018.
	ZHANG Wanmao. Evaluation of formation pressure and dynamic reserves in Eastern-Sulige gas field[D]. Chengdu: Chengdu University of Technology, 2018.
[25]	SHI J T, CHANG Y C, WU S G, et al. Development of material balance equations for coalbed methane reservoirs considering dewatering process, gas solubility, pore compressibility and matrix shrinkage[J]. International Journal of Coal Geology, 2018, 195: 200-216.
[26]	周尚忠, 张文忠. 当前我国煤层气采收率估算方法及存在问题[J]. 中国煤层气, 2011, 8(4): 9-12.
	ZHOU Shangzhong, ZHANG Wenzhong. The current methods for estimating recovery rate of CBM and the existing problems in China[J]. China Coalbed Methane, 2011, 8(4): 9-12.
[27]	接敬涛, 邵先杰, 乔雨朋, 等. 煤层气采收率预测方法研究及应用: 以韩城矿区为例[J]. 重庆科技学院学报(自然科学版), 2015, 17(5): 59-63.
	Jingtao JIE, SHAO Xianjie, QIAO Yupeng, et al. Research on the predictive method of CBM recovery efficiency: A case study of Hancheng Mining Area[J]. Journal of Chongqing University of Science and Technology (Natural Sciences Edition), 2015, 17(5): 59-63.

井号	井型	生产层位	累积产气量/10⁴ m³	地质储量/10⁴ m³	可采储量/10⁴ m³	采出程度/%	采收率/%	可采储量计算方法
平均			1 843.26	3 954.06	2 683	46.62	67.87
B1	直井	4+5号/8+9号	3 024.99	4 674.33	3 813	64.71	81.57	产量累积法
B1X1	定向井	4+5号/8+9号	1 592.11	3 793.58	2 165	41.97	57.07	产量累积法
B1X2	定向井	4+5号/8+9号	2 141.03	4 459.19	2 879	48.01	64.56	Arps递减分析法
B1X3	定向井	4+5号/8+9号	2 180.31	4 019.72	2 727	54.24	67.84	Arps递减分析法
B1X4	定向井	4+5号/8+9号	2 868.19	4 419.27	3 936	64.90	89.06	Arps递减分析法
B1-1X1	定向井	4+5号/8+9号	1 759.60	4 460.97	2 610	39.44	58.51	产量累积法
B1-1X2	定向井	4+5号/8+9号	1 242.62	4 138.23	1 991	30.03	48.11	产量累积法
B1-1X3	定向井	4+5号/8+9号	1 589.40	3 895.95	2 445	40.80	62.76	Arps递减分析法
B1-1X4	定向井	4+5号/8+9号	1 691.83	3 943.04	2 718	42.91	68.93	Arps递减分析法
B1-1X5	定向井	4+5号/8+9号	1 282.69	4 142.27	2 104	30.97	50.79	Arps递减分析法
B1-2X1	定向井	4+5号/8+9号	1 438.37	3 231.38	2 488	44.51	76.99	流动物质平衡法
B1-2X2	定向井	4+5号/8+9号	1 434.26	3 205.76	2 290	44.74	71.43	产量累积法
B1-2X3	定向井	8+9号	715.74	1 948.96	1 195	36.72	61.31	流动物质平衡法
B1-2X4	定向井	4+5号/8+9号	1 323.60	3 558.29	2 331	37.20	65.51	Arps递减分析法
B1-3	直井	4+5号/8+9号	1 352.27	4 125.96	2 370	32.77	57.44	产量累积法
B1-3X1	定向井	4+5号/8+9号	2 313.30	4 567.25	3 563	50.65	78.01	产量累积法
B1-3X2	定向井	4+5号/8+9号	3 486.90	4 778.46	4 126	72.97	86.35	产量累积法
B1-3X3	定向井	4+5号/8+9号	1 741.55	3 810.53	2 518	45.70	66.08	Arps递减分析法

项目	开发一单元	开发二单元	开发三单元
生产井数/口	390	262	217
稳产期平均日产气量/m³	3 314	1 242	864
原始地层压力/MPa	6.63	7.14	7.05
临界解吸压力/MPa	5.57	4.57	3.38
地解压差/MPa	1.06	2.57	3.67
临储比	0.84	0.64	0.48
见气时间/d	99	196	228
达产时间/d	1 000	755	872
稳产时间/d	981	1 134	1 553
稳产期末累积产量/10⁴ m³	607.7	255.6	175.6
稳产期末累积产量占比/%	43.68	45.48	44.01
稳产期末采出程度/%	21.2	10.8	7.4
采气速度/%	3.82	1.79	0.99
自然递减率/%	8.58	7.15	6.06
递减期累积产量/10⁴ m³	783.3	306.4	223.4
递减期产量占比/%	56.32	54.52	55.99
可采储量/10⁴ m³	1 391	562	399
采收率/%	48.50	23.86	16.99

主要因素	地质条件		开发一单元	开发二单元	开发三单元
构造条件	构造形态		南西倾斜的单斜构造	向西倾斜的单斜构造	南西倾斜的单斜构造
构造条件	断层		无断层	无断层	少量断层发育
储层条件	埋深/m		400~1 100（666）	600~1 100（884）	650~1 150（925）
	煤层厚度/m	4+5号煤	6.0~9.0（6.7）	5.0~8.0（6.1）	4.0~8.0（5.3）
	煤层厚度/m	8+9号煤	12.0~18.0（13.1）	8.0~12.0（10.5）	6.0~10.0（9.1）
	含气量/(m³/t)	4+5号煤	4.0~9.0（7.3）	5.0~10.0（7.6）	7.0~10.0（7.8）
	含气量/(m³/t)	8+9号煤	4.0~10.0（8.6）	4.0~9.0（7.5）	4.0~8.0（6.5）
	孔隙度/%	4+5号煤	4.0~5.5（4.5）	3.0~5.5（3.2）	2.0~5.0（3.2）
	孔隙度/%	8+9号煤	2.0~4.0（3.2）	2.0~4.0（3.2）	2.0~5.0（3.4）
	渗透率/10^-3 μm²	4+5号煤	4.0~9.0（5.4）	3.0~7.0（4.3）	2.0~5.0（3.2）
	渗透率/10^-3 μm²	8+9号煤	4.5~5.5（4.9）	4.5~5.5（5.0）	4.5~5.5（4.7）
	煤体结构		原生结构煤	原生结构煤	原生结构煤
保存条件	顶板岩性	4+5号煤	泥岩、泥质砂岩	泥岩、泥质砂岩	泥岩、砂岩
	顶板岩性	8+9号煤	泥岩、炭质泥岩	泥岩、砂质泥岩	泥岩、炭质泥岩
	顶板厚度/m	4+5号煤	3.0~10.0（4.0）	2.0~6.0（2.7）	1.0~5.0（2.2）
	顶板厚度/m	8+9号煤	2.0~8.0（3.7）	2.0~12.0（3.2）	2.0~12.0（4.3）
	矿化度/(mg/L)		2 000~4 500（3 656）	1 700~3 000（2 406）	1 000~2 400（1 842）
	水文地质		弱径流区—滞留区	径流区—弱径流区	径流区—弱径流区

	4+5号煤埋深	8+9号煤埋深	4+5号煤厚度	8+9号煤厚度	4+5号煤含气量	8+9号煤含气量	4+5号煤孔隙度	8+9号煤孔隙度	地层压力	临界解吸压力	临储比	见气时间	稳定日产气量	可采储量
4+5号煤埋深	1	0.999	-0.307	-0.099	0.309	-0.302	0.155	-0.163	0.864	-0.154	-0.798	0.730	-0.502	0.135
8+9号煤埋深	0.999	1	-0.318	-0.074	0.327	-0.290	0.146	-0.169	0.865	-0.130	-0.784	0.716	-0.479	0.160
4+5号煤厚度	-0.307	-0.318	1	0.200	-0.209	0.053	-0.203	-0.446	-0.163	-0.090	0.003	0.104	0.141	0.141
8+9号煤厚度	-0.099	-0.074	0.200	1	0.286	0.237	-0.323	-0.285	-0.074	0.526	0.329	-0.300	0.613	0.826
4+5号煤含气量	0.309	0.327	-0.209	0.286	1	0.426	0.046	-0.120	0.328	0.431	-0.061	0.191	0.129	0.602
8+9号煤含气量	-0.302	-0.290	0.053	0.237	0.426	1	0.030	0.235	-0.238	0.594	0.538	-0.427	0.538	0.224
4+5号煤孔隙度	0.155	0.146	-0.203	-0.323	0.046	0.030	1	0.277	0.172	-0.064	-0.211	0.305	-0.220	-0.180
8+9号煤孔隙度	-0.163	-0.169	-0.446	-0.285	-0.120	0.235	0.277	1	-0.112	0.131	0.200	-0.301	-0.106	-0.403
地层压力	0.864	0.865	-0.163	-0.074	0.328	-0.238	0.172	-0.112	1	0.059	-0.817	0.762	-0.415	0.160
临界解吸压力	-0.154	-0.130	-0.090	0.526	0.431	0.594	-0.064	0.131	0.059	1	0.500	-0.430	0.693	0.526
临储比	-0.798	-0.784	0.003	0.329	-0.061	0.538	-0.211	0.200	-0.817	0.500	1	-0.912	0.735	0.121
见气时间	0.730	0.716	0.104	-0.300	0.191	-0.427	0.305	-0.301	0.762	-0.430	-0.912	1	-0.695	-0.041
稳定日产气量	-0.502	-0.479	0.141	0.613	0.129	0.538	-0.220	-0.106	-0.415	0.693	0.735	-0.695	1	0.466
可采储量	0.135	0.160	0.141	0.826	0.602	0.224	-0.180	-0.403	0.160	0.526	0.121	-0.041	0.466	1

Research on recoverable reserves and gas production characteristics of coalbed methane wells in Baode block of Ordos Basin

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 14

References 27

Related Articles 15

Metrics

Comments

Recommended 0

[1]	WU Xi. Technology and practice for efficient development of coalbed methane horizontal wells in high-rank coal of Qinshui Basin [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 167-174.
[2]	WANG Liangjun, WANG Yong, ZHANG Xinwen, JIN Yunyun, ZHU Yan, ZHANG Gaoyuan, LI Hui, LI Wangju. Coal accumulation control on gas and coalbed methane exploration potential in southern Ordos Basin: A case study of Carboniferous Taiyuan Formation in Xunyi exploration area [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 175-184.
[3]	ZHU Suyang, LIU Wei, WANG Yunfeng, JIA Chunsheng, CHEN Chaogang, PENG Xiaolong. Current situation and prospects of coalbed methane exploration and development in Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 185-193.
[4]	YANG Xue, TIAN Chong, YANG Yuran, ZHANG Jingyuan, WANG Qing, WU Wei, LUO Chao. Accumulation characteristics and exploration potential of deep coalbed methane in Changning area of Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 194-204.
[5]	WANG Pengxiang, ZHANG Zhou, YU Wanying, ZOU Qiang, YANG Zhengtao. Characteristics of pore-fracture structure and three-dimensional spatial distribution differences in deep and shallow coal reservoirs: A case study of Junggar Basin [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 227-236.
[6]	YU Yang, DONG Yintao, LI Yunbo, BAO Yu, ZHANG Lixia, SUN Hao. Research on prediction of bottom hole flowing pressure for vertical coalbed methane wells based on improved SSA-BPNN [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 250-256.
[7]	HU Qiujia, LIU Chunchun, ZHANG Jianguo, CUI Xinrui, WANG Qian, WANG Qi, LI Jun, HE Shan. Machine learning-based coalbed methane well production prediction and fracturing parameter optimization [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 266-273.
[8]	ZHAO Chongsheng, WANG Bo, GOU Bo, LUO Pengfei, CHEN Guojun, WU Guoquan. Equipment configuration and process technology of hybrid oil-electric fracturing for deep coalbed methane [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 292-299.
[9]	LIN Weiqiang, CONG Peng, WANG Hong, WEI Zichen, YANG Yuntian, YAO Zhiqiang, QU Lili, MA Limin, WANG Fanglu. Application and discussion of geological guidance technology for deep coalbed methane horizontal wells: A case study of block X in Shenmu gas field, Ordos Basin [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 300-309.
[10]	ZHAO Haifeng, WANG Chengwang, XI Yue, WANG Chaowei. Study on dynamic stress field of fracturing in horizontal wells of deep coal seams: A case study of Daning-Jixian block in Ordos Basin [J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 310-323.
[11]	KONG Xiangwei, XIE Xin, WANG Cunwu. Optimization of segmented fracturing parameters for coalbed methane horizontal wells based on comprehensive fracability index [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 925-932.
[12]	ZHANG Bing, DU Fengfeng, ZHANG Haifeng, WEI Chao. Selection of favorable areas for coalbed methane development based on economic benefit evaluation: A case study of Yangjiapo block in eastern margin of Ordos Basin [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 933-941.
[13]	QIU Wenci, SANG Shuxun, GUO Zhijun, HAN Sijie, ZHOU Xiaozhi, ZHOU Peiming, WU Zhangli, SANG Guoyun, ZHANG Binbin, GAO Wei. Characteristics of stratified coal reservoirs in Liupanshui coalfield of Guizhou Province and exploration and development direction of coalbed methane [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 959-966.
[14]	WANG Zhijian. Mechanism study on effect of CO₂ phase transition fracturing on methane adsorption in coal [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 967-974.
[15]	HUANG Li, XIONG Xianyue, WANG Feng, SUN Xiongwei, ZHANG Yixin, ZHAO Longmei, SHI Shi, ZHANG Wen, ZHAO Haoyang, JI Liang, DENG Lin. A new method for determining factors Influencing productivity of deep coalbed methane vertical cluster wells [J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 990-996.