塔里木盆地塔中、塔北地区志留系古油藏的油气运移

运用含氮化合物咔唑类探讨塔中、塔北地区在第一期成藏时志留系油气藏的烃类的运移方向，为建立古油藏成藏模式，预测原生油气藏分布提供依据．研究表明，塔中志留系古油藏的油气主要来源于满加尔凹陷的中、下寒武统烃源岩，向西南南的方向首先进入塔中志留系，然后沿不整合面或顺储层从北西向南东和从北东向南西2个方向向志留系在塔中地区的尖灭线附近运移．塔北志留系古油藏的油气也主要来自满加尔凹陷的中、下寒武统烃源岩，首先向北西方向进入塔北隆起的志留系，然后在志留系储层内或不整合面沿上倾方向继续向北西方向运移进入圈闭．

Hydrocarbon Migration of Silurian Paleo-pools in Tazhong and Tabei Areas of Tarim Basin

In order to establish the formation models of the Silurian paleo-pools and predict the distribution of the original hydrocarbon pools, hydrocarbon migration directions during the first Silurian pools filling stage in Tazhong and Tabei areas of the Tarim basin have been studied based on analysis of carbazole compounds. The results indicate that hydrocarbons in the Silurian paleo-pools of the Tazhong uplift mainly originated from the Lower and Middle Cambrian source rocks in the Manjiaer sag. These hydrocarbons flowed firstly southwest-southward into the Silurian reservoir beds in the Tazhong area. Then, they further migrated southeastward and southwestward, respectively, to the Silurian pinchouting zone in the Tazhong through unconformable surfaces or the reservoir beds. Hydrocarbons in Silurian pools in the Tabei uplift were also from the Lower and Middle Cambrian source rocks in the Manjiaer sag. They migrated northwestward firstly into the Silurian reservoir beds in the Tabei uplift, and then continued to flow into the traps in high positions in the same direction through the Silurian reservoirs or unconformable surfaces.