砂岩铸体酸溶样品扫描电镜研究及地质应用  

Study on sandstone acid-soluble casting-samples by dint of SEM and its application

作　　者：沈光政[1] 王成[1] 王殿滨[1] 张民志[1] 于笠[1] 刘彤彦[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2005年第3期35-37,i003,共4页Petroleum Geology & Oilfield Development in Daqing

摘　　要：研究孔隙类型通常采用铸体薄片方法,研究孔隙结构则较多地应用压汞资料。根据扫描电镜具有放大倍率高、景深大,可以获得十分清晰的高分辨率立体图象的特点,探讨了利用扫描电镜研究较低孔渗砂岩铸体酸溶样品的方法。结果表明,该方法不但可以直接定量测量孔隙直径大小、喉道长度和宽度,并可以直观观察孔隙全貌,研究孔隙和喉道的立体形态及配置关系。同时,对孔隙类型也可以做到比较可靠的区分。Study on the pore type usually adopts the method of casting slice, while study on pore structure mostly adopts the mercury intrusion method. According to the characteristics of SEM (scanning electronic microscope), for instance, high magnification, large depth of field and high resolution stereoscopic pictures of SEM are very clear, this paper discusses the method for study on sandstone acid-soluble casting-samples by dint of SEM. The result shows that pore diameter, throat length and width can be measured quantitatively by this method, and meanwhile, pore panorama can be observed directly to study the stereo shape and configuration of the pores and throats and to distinguish pore types reliably.

关 键 词：扫描电镜 铸体 酸溶 孔隙 喉道 配位数 

分 类 号：TE135.1[石油与天然气工程—油气勘探]