The Kulongshan and Liugouzhuang Oil Reservoirs: A kind of the source rock fractured reservoir of the Qingxi Sag in Jiuxi Depression

Key words: 
• petroleum generation sag

Abstract: The geological background of finding the Qingxi oil field in the Qingxi petroleum generation sag of Jiuxi Depression are analyzed, the formation and distribution regularity of the Kulongshan and Liugouzhuang oil reservoirs and it's control factor are researched. On the basis of this study, the thesis raised a new viewpoint that the Kulongshan and Liugouzhuang oil reservoirs of the Qingxi oil field should be the source rock fractured reservoir. At the same time, the specially geological condition of the source rock fractured reservoir's formation and it's research value are demonstrated. The specific significance of the source rock fractured reservoir is that the oil reservoir may be found in the source rock, it's finding and an exhaustive research will extend the oilgas exploring area and enrich the petroleum geology theory. It is a new research task which has great scientific significance and practical value.