Qijia-Gulong depression is master source area of oil and gas in Songliao Basin, a part of oil and gas from the source is held up in the depression, the other migrates to west clinoform zone.

摘要齐家-古龙凹陷是松主要源区，其心线以西生排出一部分存留在凹陷内，另一部分向西部斜坡运移。