It is shown that it is in good assemblage and its crude oil originates from lacustrine source rocks of Lucaogou formation of Upper Permian, dominated by low-mature oil.

• 牛圈湖油田沉积与储盖组合良好。原油主要来自于上二叠统芦草沟组湖相烃源岩，以低成熟油为主。