Two oil layers are mainly fault and lithologic deposit 兩套油層主要為斷層巖性油藏。
4 . it is concluded that the es3 is a main member to accommodate the oil expelled from the source rock of the es3 member , that two assignment units of the type i are prospective areas where faulted reservoirs , fracture reservoirs , lithologic deposits may well be founded . the depth of threshold is among 2600 - 2800 meter and that of expulsion is around 3100 - 3400 meter , so the source rock of sha er member is totally immature and that of sha san member is partly mature 4 、從歷史演化角度和二次運(yùn)移理論出發(fā),研究了德南洼陷下第三系低熟油灶的油氣運(yùn)移作用和分配,提出初次分配主要指向是沙三下段;內(nèi)部成藏系統(tǒng)是有效的成藏系統(tǒng),其內(nèi)部油氣的再次分配主要指向德3井南和德1井南是兩個(gè)類油氣分配單元;德南洼陷生烴深度2600 - 2800米間,排烴起始深度在3100 - 3400米間,按目前下第三系地層埋深深度,則沙一段生油巖基本上處于未成熟狀態(tài),沙三中、下生油巖處于低熟狀態(tài),僅在洼陷深部分布成熟生油巖。