CAJ | 학술논문

正确认识页岩微观孔隙结构特征是研究页岩气赋存状态、渗流机制和资源评价等问题的基础。运用原子力显微镜观察川东南地区志留系龙马溪组黑色页岩表面的微观孔隙形态，分析了页岩原子力显微镜成像的影响因素，确定了最佳实验条件，最终实现了页岩5种类型的表面形态图像。在此基础上，重构了页岩表面的三维图像，并定量分析了孔隙的大小和深度。与扫描电镜图像相比，原子力显微镜不受样品导电性的影响，图像呈现页岩有机质内部的结构信息更清晰。因此，原子力显微成像可作为扫描电镜成像的有力补充，在进行扫描电镜测试之前，先进行原子力显微成像能够获得更多的样品表面信息，使得研究页岩微观孔隙结构的手段更为丰富。
정학인식혈암미관공극결구특정시연구혈암기부존상태、삼류궤제화자원평개등문제적기출。운용원자력현미경관찰천동남지구지류계룡마계조흑색혈암표면적미관공극형태，분석료혈암원자력현미경성상적영향인소，학정료최가실험조건，최종실현료혈암5충류형적표면형태도상。재차기출상，중구료혈암표면적삼유도상，병정량분석료공극적대소화심도。여소묘전경도상상비，원자력현미경불수양품도전성적영향，도상정현혈암유궤질내부적결구신식경청석。인차，원자력현미성상가작위소묘전경성상적유력보충，재진행소묘전경측시지전，선진행원자력현미성상능구획득경다적양품표면신식，사득연구혈암미관공극결구적수단경위봉부。
Correct understanding of shale microscopic pore structure is important for the understanding of shale gas ’ occurrence, percolation mechanism and resource assessment. The surface morphology of microscopic pores of black shale which is in the Silurian Longmaxi formation of the Sichuan Southeastern was observed by using an atomic force microscope ( AFM) . Based on the analysis of the influencing factors of shale AFM imaging, the optimal experimental conditions were determined and five types of shale’ s image were got. The three?dimensional image of shale surface was reconstructed and the pore size and depth was quantitatively analyzed. Compared with scanning electron microscopy ( SEM) , AFM is not influenced by electrical conductivity of the sample, and it can provide a clearer image of organic matter. So AFM can be used as a strong complement of SEM. We can use AFM to get more information of sample surface before using SEM, which increases the research method for shale microscopicpore structure.