古龙页岩油的地质资源量大151亿吨，是近期大庆油田勘探的热点。文章采用岩心观察、薄片鉴定、电子背散射、二次成像及能谱分析等发现了页岩油储层中发育大量溶蚀微米孔。溶蚀微米孔直径多在0.50~500 μm，多在1~2 μm，少数介形虫铸模孔直径可达0.5~1.0 mm；呈近圆形、扁圆形、多角形、不规则。溶蚀孔可以发育在介形虫中、方解石或白云石中和黏土、长英质矿物之中。介形虫中的溶蚀孔和铸模孔系成岩早期的脱羧形成的；而方解石和白云石的溶蚀孔大部分被充填，多被有机黏土、沥青和自生矿物充填，系成岩后期形成的；此外，长英质矿物也被溶蚀形成了大量溶蚀孔，能谱分析表明，古龙页岩的渗出油或沥青中富集了挥发性和腐蚀性极强的卤族元素F、Br和Cl，揭示了其溶蚀孔发育的另一个重要原因可能叠加了富含挥发性和腐蚀性极强的卤族元素的岩浆热液。这些溶蚀微米孔多半与其它裂缝相连，构成了一个很好的空间联通网络系统，为古龙页岩油的有效和高效开发叠定了很好的物质基础。

The geological resource of the Gu Long shale oil is estimated at 15.1 billion tons, making it a recent exploration hotspot in the Daqing Oilfield. Core observation, thin section identification, electron backscatter, secondary imaging and energy spectrum analysis show that a large number of dissolution micropores are developed in the shale oil reservoir. The diameters of the dissolution micropores are mostly between 0.50 micrometers and 500 micrometers with most being 1-2 micrometers, and a few ostracod mold pores can reach 0.5-1.0 mm; they are nearly round, flat round, polygonal, and irregular. The dissolution pores can occur in ostracods, calcite or dolomite, and in clay and feldspar minerals. The dissolution pores and mold pores in ostracods were formed by decarboxylation in the early stage of diagenesis; while most of the dissolution pores in calcite and dolomite are filled,

mostly by organic clay, asphalt and authigenic minerals, and were formed in the later stage of diagenesis. In addition, feldspar minerals are also dissolved to form a large number of dissolution pores. Energy spectrum analysis reveals that the expelled oil or asphalt in the Gu Long shale is enriched in highly volatile and corrosive halogen elements such as F, Br and Cl, indicating that dissolution pores could be a result of the superimposition of magmatic hydrothermal fluids rich in highly volatile and corrosive halogen elements. Most of these dissolution micropores are connected to other fractures, forming a good spatially connected network system and facilitating the development of Gu Long shale oil.