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

Abstract

The development and evaluation of the transport capacity of oil and gas determine the location of the associated fractures based on the analysis of its ability to transport oil and gas and finding favorable locations in different periods of the faults. This paper also explored the distribution of oil and gas in different positions near the lower generation and upper reservoir faults in the petroliferous basin, while locations of the faults’ convex ridges with stronger oil and gas transporting ability are also determined and evaluated. A set of prediction methods in determining favorable locations for oil and gas transport capacity configured in different periods of fault are established and applied in different periods of the F3 fault in the Daliuquan area, Langgu Sag, Jizhong Depression, Bohai Bay Basin. The results of these two evaluations indicate that the development position of associated fractures of the F3 fault with strong oil and gas transport capacity was distributed primarily in the eastern part of the area. Sections of the convex ridge with stronger oil and gas transport capacity, on the other hand, are mainly distributed in the western, middle, and eastern faults. The favorable location of transporting oil and gas ability configuration of the F3 fault in different periods is distributed mainly in the east of the F3 fault, where oil and gas generated by the source rock of the Sha 4 Member (Es4) migrate and accumulate to the middle and lower sections of the Sha 3 Member (Es31−2) through the developmental position of associated fractures and convex ridges.