The Studies Of Enrichment Regular Pattern And Geologic Featuer On Lithologic Reservoirs In The Southwest Area Of Qaidam Basin

Abundant remaining petroleum had been explored in the southwestern Qaidam basin. In the past, more attention was paid to find structural reservoir than lithologic reservoir. In recent years, under the guidance of exploration methods of lithological reservoirs, that is hydrocarbon enriched in depresson, accumulated in slope zones, petroleum-bearing new layer searched, and superposition continuity explored, the breakthrough of petroleum exploration in Hongliuquan slope and Wunan slope of southwestern Qaidam basin was gotten. The discovery of large scale special lithologic reservoir in Yuejin slope was done. Since the low degree of exploration and limited know about lithological reservoir, the exploration of lithologic reservoirs in the southwestern Qaidam basin is still on exploratory stage, and a set of mature and effective methods are not formed yet. In this paper some basic geologic feature had been researched, main include source rock, reservoir and tectonic characteristics, all of those will well benefit to the studies of lithological reservoirs...