共和盆地——一个值得研究的新盆地

位于青海省 西部的共和盆地,在诸多的石油地质条件方面与柴达木盆地东部地区相似,应是寻找生物气的一个新领域。在共和盆地钻探的共参1井,古-新近系厚达5km以上。对共和盆地的地层、沉积、构造、生烃、油气显示等进行分析,并与柴达木盆地东部三湖地区进行了比较后指出,两盆地在沉积环境、气源岩特征、储集层特征诸方面颇为相似。共和盆地也是一个寻找生物气的理想地区,应加强对盆地的勘探和研究。

Gonghe Basin:A New and Worth-Researching Basin

Gonghe basin is located in western Qinghai province of China. It is found that its petroleum geologic conditions are similar to eastern Qaidam basin, and it could be a novel domain for exploring biogenetic gas. Well GC-1 drilled in this basin shows that it has Tertiary system with thickness of over 5 000m. Through analysis an comparison of formation, deposition, structure, hydrocarbon generation and indicator with those from Sanhu area in eastern Qaidam basin, it is believed that the similarities occur in depositional environment, gas source rock feature and reservoir characteristic, etc., in the two basins. It is suggested that Gonghe basin is also an ideal area for biogenetic gas, the related exploration and studies should be focused on.