断裂不同时期输导油气能力配置有利部位预测方法

为了研究含油气盆地下生上储式断裂附近不同部位油气分布规律,在断裂不同时期输导油气能力及其配置有利部位研究的基础上,通过确定断裂伴生裂缝发育部位和评价其输导油气能力,确定断裂伴生裂缝发育部位输导油气能力较强部位;通过确定断裂凸面脊和评价其输导油气能力,确定断裂凸面脊输导油气能力较强部位,二者叠合建立了一套断裂不同时期输导...

A prediction method of favorable positions of transporting oil and gas capacity configuration in different periods of faults

In order to study the distribution of oil and gas in different positions near the lower generation and upper reservoir faults in the petroliferous basin,on the basis of the study on the transporting oil and gas ability and the disposing favorable positions in different periods of the faults,the positions with strong oil and gas transporting ability of the associated fractures are determined through the determination of the development positions and the oil and gas transporting ability evaluation of the associated fractures;the positions with stronger oil and gas transporting ability of the convex ridges of the faults are determined through the determination of the development positions and the transporting oil and gas ability evaluation of convex ridges of the faults. Through the superposition of the two evaluations,a set of prediction methods for favorable positions of oil and gas transporting ability configuration in different periods of fault is established,which is applied to predict favorable positions of oil and gas transporting ability configuration in different periods of F3 fault in Daliuquan area,Langgu Sag,Jizhong Depression,Bohai Bay Basin. The results show that the development position of associated fractures of F3 fault with strong oil and gas transporting ability are mainly distributed in the middle part,while the parts with stronger oil and gas transporting ability of convex ridge are mainly distributed in the western,middle and eastern F3 fault. The favorable position of transporting oil and gas ability configuration of F3 fault in different periods are mainly distributed in the eastern F3 fault which is favorable for the oil and gas generated by the source rock of Es4 to migrate and accumulate to the middle and lower parts of Es3 through the developmental position of associated fractures and convex ridges. It is consistent with the discovery that oil and gas are mainly distributed in the eastern of the middle and lower parts of Es3 near the F3 fault,which indicates that this method is feasible to predict the favorable position of oil and gas transportation capacity configuration in different periods of the fault.