石油实验地质

2025, 47(2): .

Abstract(129) PDF-CN(23)

Abstract:

Innovative exploration and post-drilling insights from H3X well in Haizhong Sag of Beibuwan Basin

JIANG Donghui, YANG Pengcheng, CHENG Xuetong, CAO Qian, YU Yongqi, NIU Huawei

2025, 47(2): 223-234. doi: 10.11781/sysydz2025020223

Abstract(457) HTML (139) PDF-CN(85)

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The Haizhong Sag of the Beibuwan Basin has undergone decades of oil and gas exploration, but no commercial achievements have been made. Previous analysis suggested that this is primarily constrained by three key issues: indefiniteness of high-quality source rocks, unclear large-scale reservoir devel...

Research progress, exploration process, and challenges in marine sandy hydrates

FAN Qi, FU Qiang, GUO Gang, ZHU Zhenyu, PANG Weixin, LI Qingping, ZHUO Haiteng

2025, 47(2): 235-247. doi: 10.11781/sysydz2025020235

Abstract(357) HTML (164) PDF-CN(44)

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Natural gas hydrates are a key area of development in marine energy resources. However, the technical and economic barriers for muddy silt gas hydrate exploration in the South China Sea are high, and their resource potential remains controversial. This paper reviews the significant advancements achi...

Fault-cavity bodies: probable spaces for large-scale hydrocarbon migration and accumulation in non-carbonate rock areas

LUO Qun, WANG Qianjun, GUI Shiqi, HE Xiaobiao, HU Wanjing, ZHANG Yuejing, WANG Liang, CAO Xuming

2025, 47(2): 248-260. doi: 10.11781/sysydz2025020248

Abstract(315) HTML (141) PDF-CN(46)

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In carbonate rocks, it is easy to understand that fault-cavity bodies form because they dissolve easily when fluids flow along faults, creating caves. However, non-carbonate rocks are not as easily dissolved by fluids. This raises the question of whether caves still develop along faults in such area...

Morphological characteristics of framboidal pyrite and their paleo-environmental significance in Longmaxi Formation of Weirong area, southern Sichuan Basin

ZHAO Guowei, DENG Mo, WANG Yuanzheng, JIANG Xiaoqiong, ZENG Huasheng, ZHANG Changjiang

2025, 47(2): 261-272. doi: 10.11781/sysydz2025020261

Abstract(245) HTML (119) PDF-CN(66)

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The morphological characteristics of framboidal pyrite have important indicative significance for the shale sedimentary environments and shale gas enrichment. Taking the shale in the first member of the Longmaxi Formation from well WY1 in the Weirong area of southern Sichuan Basin as the study subje...

Fluid pressure gradient characteristics and petroleum geological significance in Shahejie Formation of Bonan Sag in Jiyang Depression

LIU Peng, MENG Tao, YAN Fatang, LI Zhongxin, SHAN Chengcheng

2025, 47(2): 273-283. doi: 10.11781/sysydz2025020273

Abstract(232) HTML (127) PDF-CN(32)

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Fluid pressure gradient is the rate at which residual fluid pressure changes both spatially and temporally. It serves as an important parameter for indicating oil and gas migration pathways and accumulation zones, holding great geological significance. This paper focuses on the Shahejie Formation in...

Source-to-sink pattern and sand body distribution in the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

FANG Xulei, WANG Linlin, QI Rong, GAO Hui, YANG Fei, LIU Lu, SU Juan

2025, 47(2): 284-295. doi: 10.11781/sysydz2025020284

Abstract(187) HTML (116) PDF-CN(32)

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The Fuxian area in the southeastern Ordos Basin is a crucial area for natural gas exploration in the Upper Paleozoic. The primary exploration target, the first member of the Permian Shihezi Formation (He 1 Member), is significantly influenced by complex tectonic and sedimentary processes, resulting ...

Simulation and zoning evaluation of in-situ stress field within ultra-deep tight sandstone reservoirs in thrust-nappe structures of Bozi-Dabei area, Tarim Basin

XING Zimeng, LI Ruixue, DENG Hucheng, SU Hang, ZHANG Jiawei, HE Jianhua, ZHANG Hui, HU Xiaofei, MA Shunting

2025, 47(2): 296-310. doi: 10.11781/sysydz2025020296

Abstract(264) HTML (100) PDF-CN(43)

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The Cretaceous tight sandstone reservoirs in the Bozi-Dabei area of the Tarim Basin are key targets for ultra-deep tight sandstone gas exploration and development in China. Influenced by thrust-nappe structures and salt structures, the region has formed imbricate folding structures and a series of f...

Characteristics and genesis of carbonate micropores in the first member of Lower Cambrian Canglangpu Formation in north and central Sichuan Basin

ZHOU Chunyu, HE Yuan, LI Zongze, ZHOU Gang, YANG Dailin, SUN Yiting, ZHANG Ya, WEN Huaguo, LIU Sibing

2025, 47(2): 311-322. doi: 10.11781/sysydz2025020311

Abstract(223) HTML (106) PDF-CN(31)

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Micropores with diameters under 10 μm are a current research focus in deeply buried tight reservoirs. The Lower Cambrian Canglangpu Formation in the Sichuan Basin shows considerable potential for natural gas exploration. The abundant micropores in the dolomite of the first member of Canglangpu Forma...

Pore structure and fractal characteristics of shale reservoirs in Jurassic Lianggaoshan Formation, northeastern Sichuan Basin

LI Qi, CHEN Ruiqian, SHANG Fei, LI Ling, BAI Xin

2025, 47(2): 323-335. doi: 10.11781/sysydz2025020323

Abstract(238) HTML (101) PDF-CN(40)

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The Jurassic Lianggaoshan Formation in the northeastern Sichuan Basin is a key exploration target for shale oil. However, due to limited exploration in this area, the shale reservoir characteristics remain unclear. Experiments such as X-ray diffraction mineral analysis, scanning electron microscopy ...

Hydrocarbon accumulation characteristics and main controlling factors of major salt-bearing basins in Central Asia

LIU Li, ZHANG Kaixun, YU Gang, YU Linjun, QIU Haihua, ZHOU Yan, GE Beiqi, NURTAEV Bakhtier, SHUKUROV Shukhrat

2025, 47(2): 336-346. doi: 10.11781/sysydz2025020336

Abstract(240) HTML (107) PDF-CN(45)

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The Amu Darya Basin and the Pre-Caspian Basin in Central Asia hold enormous hydrocarbon resource potential and are the most representative salt-bearing basins in the region. Based on the latest petroleum geological data, this study systematically compares the structural and sedimentary evolution, pe...

Physical simulation of hydrocarbon migration and accumulation in transport systems of allochthonous salt sheet development zone: a case study of Perdido Fold Belt in Burgos Basin, Gulf of Mexico

FAN Yan, XIANG Caifu, YANG Songling, PANG Lin'an, CHEN Jingtan, LI Aishan, CHEN Liang, JIANG Shanbin, SI Yongkang, YANG Minghui

2025, 47(2): 347-361. doi: 10.11781/sysydz2025020347

Abstract(218) HTML (148) PDF-CN(36)

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The Burgos Basin is a typical salt passive continental margin basin in the western Gulf of Mexico, rich in oil and gas resources. The allochthonous salt sheet development zone in the Perdido Fold Belt of the Burgos Basin has formed an oil and gas transport system comprising the underlying structures...

Reservoir prediction of conglomerate bodies in the fourth member of Xujiahe Formation of Nanjiang area, northeastern Sichuan Basin: a probabilistic body lithofacies modeling-based reservoir prediction method combining forward and inverse modeling

LONG Tao, LIU Ming, ZHANG Yuxi, SUN Jun

2025, 47(2): 362-371. doi: 10.11781/sysydz2025020362

Abstract(181) HTML (101) PDF-CN(25)

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The Upper Triassic Xujiahe Formation in the Nanjiang area of the piedmont belt in the northeast Sichuan Basin hosts large-scale, typical conglomerate gas-bearing reservoirs. These reservoirs remain underexplored and hold significant potential. Among them, the fourth member of the Xujiahe Formation i...

Geochemical oil and source correlation between crude oil of well Fusha 8 and source rocks of Permian Pusige Formation in southern margin, piedmont of southwestern Tarim Basin

WANG Xiang, GE Zhushi, ZHANG Huifang, SUN Di, WANG Zhanghu, XIE Xiaomin, MENG Qiang, CHEN Guo, XIAO Qilin

2025, 47(2): 372-383. doi: 10.11781/sysydz2025020372

Abstract(202) HTML (106) PDF-CN(32)

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To further expand the oil and gas exploration in the southern margin of the piedmont of the southwestern Tarim Basin, this study focuses on the newly discovered oil from well Fusha 8 and source rocks from wells Fusha 2 and Yang 1 in the Permian Pusige Formation of the Fusha-Keliyang structural belt....

Hydrocarbon sources and accumulation processes in intra-platform of the fourth member of Dengying Formation in northern Sichuan Basin

YANG Yi, ZHU Xiang, ZHANG Lei, XU Zuxin, DAI Lincheng

2025, 47(2): 384-394. doi: 10.11781/sysydz2025020384

Abstract(175) HTML (82) PDF-CN(31)

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The intra-platform of the fourth member of the Dengying Formation in the Upper Sinian of the Sichuan Basin is an important area for gas exploration. To clarify the hydrocarbon accumulation and enrichment patterns and distribution characteristics in this region, a study was conducted on the hydrocarb...

Field tests of CO₂ huff-n-puff technology in Nanchuan normal-pressure shale gas field

GAO Yuqiao, ZHENG Yongwang, ZHANG Lina, REN Jianhua, ZHANG Yaozu, FANG Dazhi

2025, 47(2): 395-405. doi: 10.11781/sysydz2025020395

Abstract(311) HTML (142) PDF-CN(48)

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Due to the high proportion of adsorbed methane and weak formation energy, the recovery rate of normal-pressure shale gas reservoirs is generally less than 30%. SINOPEC took the lead in conducting CO₂ huff-n-puff field tests in the Nanchuan normal-pressure shale gas field in the Sichuan Basin, verify...

Optimization design of geothermal field development schemes based on hydraulic, thermal and chemical coupled numerical simulation: a case study of karst thermal reservoir in Xiong'an New Area, Hebei Province

LIU Jian, CAO Qiang, REN Xiaoqing, LU Xingchen, LIU Yiming, YANG Baolin

2025, 47(2): 406-416. doi: 10.11781/sysydz2025020406

Abstract(158) HTML (54) PDF-CN(22)

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For the optimization design of geothermal resource development schemes in karst thermal reservoirs of the Xiong'an New Area, Hebei Province, a hydraulic, thermal and chemical multi-field coupled numerical simulation was conducted on the geothermal field's extraction status based on a three-dimension...

Quantitative study on contribution of dynamic imbibition to oil production during fracturing and huff-n-puff in tight reservoirs

LIU Hongxian, BAI Lei, LUO Qiang, LIU Tongjing, SUN Jiangfei, LIU Jiaxing

2025, 47(2): 417-425. doi: 10.11781/sysydz2025020417

Abstract(123) HTML (61) PDF-CN(25)

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Fracturing and huff-n-puff in tight reservoirs is a dynamic imbibition process, where crude oil recovery is enhanced mainly through two mechanisms: differential pressure displacement and spontaneous imbibition. However, the contribution rate of these two mechanisms to the quantification of overall o...

Application and discussion of multi-factor sensitivity analysis in value assessment of areas with low exploration level

FENG Yongtai, ZHAO Linjie, WANG Baohua, LI Longlong, DUAN Tiejun

2025, 47(2): 426-432. doi: 10.11781/sysydz2025020426

Abstract(110) HTML (40) PDF-CN(16)

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With the full implementation of competitive mining rights policies in China, the oil and gas exploration and production market has been fully open, but most of the exploration blocks currently being offered are located in areas with low exploration level. Due to the lack of data and limited understa...

Issues in shale oil core porosity measurement

ZHANG Jinqing, TAO Guoliang, HUANG Dai, LUO Cuijuan, LIU Lingbo, YANG Yunfeng

2025, 47(2): 433-440. doi: 10.11781/sysydz2025020433

Abstract(113) HTML (82) PDF-CN(32)

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The primary methods for shale porosity measurement are the fluid invasion method and the electron/X-ray radiation methods. Among them, radiation methods, due to certain limitations, are currently not widely applied. Since shale pore structures have nanometer-scale characteristics, helium gas, with i...

Main controlling factors on oblique extensional deformations in multiphase rift basins: insights from analogue experiments

WANG Qi, SUN Yonghe, GONG Lei, WANG Yougong, CHANG Deshuang, ZHANG Wanfu

2025, 47(2): 441-450. doi: 10.11781/sysydz2025020441

Abstract(136) HTML (66) PDF-CN(28)

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In order to investigate the influence of pre-existing faults and their angle (α) with different extension directions on oblique extension deformation and sag structure in multiphase rift basins, three sets of analogue experiments were designed based on the similarity theory, including oblique extens...

2025 Vol. 47, No. 2

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