梁家楼油田沙二段油气成藏规律

梁家楼油田是以开发下第三系沙河街组沙三段为主要目的层的油田，在勘探开发过程中，发现了沙二段油层在不同区域零星分布。结合区域资料研究了梁家楼地区沙二段油气地质特征和油藏特征，指出本区沙二段为典型的小型隐蔽性油藏，主要油藏类型为反向屋脊断块遮挡油气藏和断层-岩性复合油藏，总结了油气成藏规律，提出“小构造，小断层控油”和油气分布“南多北少，南浅北深”的观点，对指导本区及相邻地区沙二段的油气勘探工作具有积极意义。

Hydrocarbon Accumulation of Section H of Shahejie Formation in Liangjialou Oilfield

The mai n target zone in Liangjialou oilfield is the third section of Shahejie formation. During the exploration and development,it is found that oil reservoir of the se cond section is scattered in different regions.This paper studies the oil-gas geology and reservoir characteris-tics of the second section,according to reg ional exploration data available in this area,and indicates that the second sec tion is typical mini-subtle reservoir with primary reverse ridge block screened type and fault-lithology compound one.It is concluded that the oil-gas accum ula-tion is characterized by small structures and faults that control oil-gas migration and petroleum distribution with the more and shallower in the south th an in the north.This understanding will be of positive significance for petrole um exploration of the second sections in this area and adjacent regions.