页岩储层特征与控制因素研究

IF 0.6 4区 工程技术 Q4 ENERGY & FUELS
Pan Jie, Xu Leiming, Yang Rui, Li Tao, Gong Hujun
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引用次数: 0

摘要

本研究的重点是四川盆地东部龙马溪地层页岩气藏的特征及其控制因素。通过 X 射线衍射分析和氮吸附实验等多种方法,对该地区的页岩样本进行了详细的矿物学和储层表征。结果表明,页岩主要由粘土矿物(伊利石含量在 34.9% 至 55.7% 之间)、石英和方解石组成。在储层特征方面,页岩中孔形态主要为 "狭缝型",BET 比表面积为 7.12-25.63 m2/g,BJH 孔隙体积为 0.0095-0.0262 mL/g。这些储层特征与有机碳含量(1.82-3.87%)呈显著正相关。岩相分析进一步表明,脆性矿物含量对岩石的脆性、孔隙发育和压裂效果有显著影响。此外,成岩作用(包括压实、胶结、溶解和有机质的热演化)对页岩孔隙的形成和特征也有重要影响。这些发现为了解四川盆地龙马溪地层页岩气藏的地质特征和开发潜力提供了重要的科学依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Research on Shale Reservoir Characterization and Control Factors

Research on Shale Reservoir Characterization and Control Factors

This study focuses on the characterization of shale gas reservoirs in the Longmaxi Formation and their controlling factors in the east Sichuan Basin. Detailed mineralogical and reservoir characterization of shale samples in the region was carried out by various methods, including X-ray diffraction analysis and nitrogen adsorption experiments. The results show that the shale is mainly composed of clay minerals (illite content ranges from 34.9% to 55.7%), quartz and calcite. In terms of reservoir characteristics, the shale mesopore morphology is mainly “slit-type”, with BET specific surface area ranging from 7.12-25.63 m2/g and BJH pore volume from 0.0095-0.0262 mL/g. These reservoir characteristics show a significant positive correlation with the organic carbon content (1.82-3.87%). correlation. Petrographic analysis further reveals that the brittle mineral content has a significant effect on the brittleness, pore development and fracturing effectiveness of the rocks. In addition, diagenesis (including compaction, cementation, dissolution, and thermal evolution of organic matter) had a significant impact on the formation and characterization of shale pores. These findings provide a key scientific basis for understanding the geological characteristics and development potential of shale gas reservoirs in the Longmaxi Formation in the Sichuan Basin.

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来源期刊
Chemistry and Technology of Fuels and Oils
Chemistry and Technology of Fuels and Oils 工程技术-工程:化工
CiteScore
0.90
自引率
16.70%
发文量
119
审稿时长
1.0 months
期刊介绍: Chemistry and Technology of Fuels and Oils publishes reports on improvements in the processing of petroleum and natural gas and cracking and refining techniques for the production of high-quality fuels, oils, greases, specialty fluids, additives and synthetics. The journal includes timely articles on the demulsification, desalting, and desulfurizing of crude oil; new flow plans for refineries; platforming, isomerization, catalytic reforming, and alkylation processes for obtaining aromatic hydrocarbons and high-octane gasoline; methods of producing ethylene, acetylene, benzene, acids, alcohols, esters, and other compounds from petroleum, as well as hydrogen from natural gas and liquid products.
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