RESEARCH TRENDS

• A major transformation from coalbed methane to coal-rock gas leading the "coal-rock gas revolution"
• Jiao Fangzheng, Zhao Qun, Xiao Yuhang, Liu Dan
• 2025, 46 (12): 2211-2225. DOI: 10.7623/syxb202512001
• Abstract ( ) PDF (20958KB) ( )

PETROLEUM EXPLORATION

• “Six-map-and-one-table” characterization method of the Whole Petroleum System based on the element-evolution-distribution integrated concept:a case study of the Whole Petroleum System of Q ingshankou Formation in Q ijia-Gulong sag of Songliao Basin
• Song Yan, Jia Chengzao, Jiang Lin, Ma Xingzhi, Shao Xindi
• 2025, 46 (12): 2226-2244. DOI: 10.7623/syxb202512002
• Abstract ( ) PDF (11993KB) ( )

• Major discovery in Well QB1 and exploration prospects of the lower assemblage in Dongwan structural belt,southern margin of Junggar Basin
• Pang Zhichao, Li Jing, Wang Jun, Gao Yao, Wei Lingyun, Zhang Daiyan
• 2025, 46 (12): 2245-2258. DOI: 10.7623/syxb202512003
• Abstract ( ) PDF (24542KB) ( )

• Prediction of high-quality tight sandstone reservoirs based on the coupling of sedimentary microfacies,lithofacies,and diagenetic facies:a case study of the Oligocene Huagang Formation in Xihu sag,East China Sea shelf basin
• Zhou Xuesong, Zhao Xiaoming, Ge Jiawang, Zhao Yong, Zhen Yan, Yin Guofeng, Fan Yucheng, Wang Jianwei, Zhang Lei
• 2025, 46 (12): 2259-2272. DOI: 10.7623/syxb202512004
• Abstract ( ) PDF (14724KB) ( )

• Silica diagenetic evolution and its control on pore development in shale reservoirs: a case study of the Ordovician Wufeng Formation and Silurian Longmaxi Formation in Sichuan Basin
• Zhao Jianhua, Yu Mengxiang, Chen Yang, Liu Keyu, Liu Guoheng, Wu Wei, Li Junqian, Luo Chao, You Zuhui
• 2025, 46 (12): 2273-2285. DOI: 10.7623/syxb202512005
• Abstract ( ) PDF (25422KB) ( )

• Genetic responses of coalbed methane in different types of coal-bearing basins and their geological implications
• Bao Yuan, Chen Xueru, Ju Yiwen, Xu Fengyin, Hou Enke
• 2025, 46 (12): 2286-2300. DOI: 10.7623/syxb202512006
• Abstract ( ) PDF (7188KB) ( )

• Formation mechanism and occurrence of lacustrine microbialites:a case study of the Paleogene outcrops in Xichagou area of Q aidam Basin
• Xia Zhiyuan, Long Guohui, Liu Zhanguo, Zhang Changhao, Zhu Chao, Tang Pengcheng, Tian Minzhi
• 2025, 46 (12): 2301-2317. DOI: 10.7623/syxb202512007
• Abstract ( ) PDF (44271KB) ( )

• Differential hydrocarbon generation and evolution of Sinian-Cambrian shales as well as shale gas accumulation processes in western Hubei area
• Yu Taiyan, Feng Qianqian, Qiu Nansheng, Borjigin Tenger, Li Xuan, Zeng Shuai, Song Jialin
• 2025, 46 (12): 2318-2331. DOI: 10.7623/syxb202512008
• Abstract ( ) PDF (14334KB) ( )

OIL FIELD DEVELOPMENT

• Experimental study on influence of non-condensable gas on steam quality
• Guo Erpeng, Mao Xiaopeng, He Jitao, Jiang Xu, Zhang Kanyi, Liu Zongjian, Ren Shuowen, Wang Xinwei
• 2025, 46 (12): 2332-2342,2426. DOI: 10.7623/syxb202512009
• Abstract ( ) PDF (11382KB) ( )

• Response of enhancing coalbed methane recovery by N₂-CO₂ mixed gas injection and optimization of injection ratio under the regulation of adsorption-diffusion heterogeneity for different coal lithotypes
• Zhang Hewei, Shen Jian, Wu Caifang, Cai Ying, Zhang Zheng, Wang Qian
• 2025, 46 (12): 2343-2357. DOI: 10.7623/syxb202512010
• Abstract ( ) PDF (8017KB) ( )

PETROLEUM ENGINEERING

• Preparation of hydrothermal carbon microspheres and their mechanism in enhancing the high-temperature stability of water-based drilling fluids
• Zhong Hanyi, Chen Changzhi, Li Shusen, Li Daqi, Gao Zeming, Qiu Zhengsong, Mou Tingbo
• 2025, 46 (12): 2358-2373. DOI: 10.7623/syxb202512011
• Abstract ( ) PDF (18931KB) ( )

• Mechanism and practical significance of velocity sensitivity effects in propped fractures of deep coal seams
• Yan Xia, Xiong Xianyue, Wang Feng, Ma Ruishuai, Yuan Pu, Ji Liang, Sun Junyi, Zhang Jiyuan, Yang Hongtao, Li Chunhu, Zhang Tong, Yin Zesong
• 2025, 46 (12): 2374-2388. DOI: 10.7623/syxb202512012
• Abstract ( ) PDF (10513KB) ( )

REVIEW

• Evolution and development trends of oil and gas drilling bit technology
• Liu Qingyou, Yang Yingxin, Ye Daohui, Guan Yang
• 2025, 46 (12): 2389-2409. DOI: 10.7623/syxb202512013
• Abstract ( ) PDF (26643KB) ( )

• Progress and prospect of layered water injection wellbore communication technique
• Jia Deli, Wang Zhi, Sun Fuchao, Wang Quanbin, Yang Qinghai
• 2025, 46 (12): 2410-2426. DOI: 10.7623/syxb202512014
• Abstract ( ) PDF (6211KB) ( )