摘要
对取自塔里木地区轮南1井的5个碳酸盐岩岩心样盐酸处理前后的微细结构进行了扫描电镜观测。每一灰岩和灰质白云岩样品的同一部位依次用10％、15％和20％盐酸在室温处理10秒;白云岩用沸腾的20％盐酸处理10秒。发表了7组共24幅扫描电镜照片,展示并分析了灰岩中晶间隙、微裂缝、灰质白云岩中晶间隙随盐酸浓度增大而增大的现象,包括碳酸盐岩中充填的泥晶和泥质粘土胶结物以及微细灰岩晶粒的溶出。
The microstructures of rarious samples of five carbonatestone cores from Lunnan district, Talimu Basin, South Xinjiang are observed and investigated under scanning electronic microscope before and after treating the same samples for 10 sec with 10%, 15%, 20% hydrochloric acid successively at ambient temperature(for limestone and calcaceous dolomite) or with boiling 20% hydrochloric acid(for dolomite, which reacts with HCl acid very slowly). 24 SEM photos in 7 series arc published. The formation and gradually broadening of intergranular gaps and microfissures in these samples by acid etching of pore wall surfaces, tiny carbonate granules, calc admixtures in calcaceous dolomite, mudstonc and argillaceous clay fillings in carbonatestone are clearly dipicted and characterized by changes in the size of pores, fissures and granules.
出处
《油田化学》
CAS
CSCD
北大核心
1993年第1期23-27,共5页
Oilfield Chemistry
关键词
碳酸盐岩
盐酸
扫描
电子显微镜
Carbonatestone
Limestone
Dolomite
Acid Treatment by Hydrochloric Acid
Microstructures
SEM Observations
