Four centuries of geological travel： The search for knowledge on foot, bicycle, sledge and camel

The greater ease of travel in the twentieth century led Raymond Priestley, geologist to Ernest Shackleton＇s 1907-1909 Antarctic expedition, in discussing a University of Melbourne geology excursion to the gold mining area of Daylesford in September 1937, to record： ＂the new method of doing geology with a motor bus while very efficient is not as energetic as the old. It is true we see as much in a day as we used to see in the old days in a week,     

基于成岩储集相定量分类模式确定特低渗透相对优质储层——以AS油田长61特低渗透储层成岩储集相定量评价为例

针对陕北斜坡中部特低渗透储层受沉积环境、成岩作用及构造等因素影响,成岩过程压实和胶结作用强烈,储层储集性能和渗流结构差异大的特点.利用AS油田长61特低渗透储层成岩储集相定量分类模式圈定相对优质储层,分别进行了区块长61砂岩的成岩作用和孔隙演化分析,建立了不同类别成岩储集相定量分类模式与综合评价指标体系.不同类型成岩储...